spring-framework-reference4.1.4 Not Using Commons

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详细说明： Not Using Commons Logging ................................................................... 12 Using SLF4J ............................................................................................ 13 Using Log4J ............................................................................................. 14 II. What’s New in Spring Framework 4.x .................................................................................... 16 3. New Features and Enhancements in Spring Framework 4.0 .................................... ........ 17 3.1. Improved Getting Started Experience .................................................................. 17 3.2. Removed Deprecated Packages and Methods .................................................... 17 3.3. Java 8 (as well as 6 and 7) ............................................................................... 17 3.4. Java EE 6 and 7 ............................................................................................... 18 3.5. Groovy Bean Definition DSL .............................................................................. 18 3.6. Core Container Improvements ............................................................................ 19 3.7. General Web Improvements ............................................................................... 19 3.8. WebSocket, SockJS, and STOMP Messaging ..................................................... 19 3.9. Testing Improvements ........................................................................................ 20 III. Core Technologies .............................................................................................................. 21 4. The IoC container ........................................................................................................ 22 4.1. Introduction to the Spring IoC container and beans .............................................. 22 4.2. Container overview ............................................................................................ 22 Configuration metadata ..................................................................................... 23 Instantiating a container .................................................................................... 24 Composing XML-based configuration metadata .......................................... 25 Using the container .......................................................................................... 26 4.3. Bean overview ................................................................................................... 27 Naming beans .................................................................................................. 28 Aliasing a bean outside the bean definition ................................................ 28 Instantiating beans ........................................................................................... 29 Instantiation with a constructor .................................................................. 29 Instantiation with a static factory method .................................................... 30 Spring Framework 4.0.0.RELEASE Spring Framework Reference Documentation iii Instantiation using an instance factory method ........................................... 30 4.4. Dependencies ................................................................................................... 32 Dependency injection ....................................................................................... 32 Constructor-based dependency injection .................................................... 32 Setter-based dependency injection ............................................................ 34 Dependency resolution process ................................................................. 35 Examples of dependency injection ............................................................. 36 Dependencies and configuration in detail ........................................................... 38 Straight values (primitives, Strings, and so on) ........................................... 38 References to other beans (collaborators) .................................................. 40 Inner beans .............................................................................................. 41 Collections ............................................................................................... 41 Null and empty string values ..................................................................... 44 XML shortcut with the p-namespace .......................................................... 44 XML shortcut with the c-namespace .......................................................... 46 Compound property names ....................................................................... 46 Using depends-on ............................................................................................ 47 Lazy-initialized beans ....................................................................................... 47 Autowiring collaborators .................................................................................... 48 Limitations and disadvantages of autowiring ............................................... 49 Excluding a bean from autowiring .............................................................. 50 Method injection ............................................................................................... 50 Lookup method injection ........................................................................... 51 Arbitrary method replacement ................................................................... 53 4.5. Bean scopes ..................................................................................................... 54 The singleton scope ......................................................................................... 55 The prototype scope ......................................................................................... 55 Singleton beans with prototype-bean dependencies ............................................ 56 Request, session, and global session scopes .................................................... 56 Initial web configuration ............................................................................ 57 Request scope ......................................................................................... 58 Session scope .......................................................................................... 58 Global session scope ............................................................................... 58 Scoped beans as dependencies ................................................................ 58 Custom scopes ................................................................................................ 60 Creating a custom scope .......................................................................... 60 Using a custom scope .............................................................................. 61 4.6. Customizing the nature of a bean ....................................................................... 62 Lifecycle callbacks ............................................................................................ 62 Initialization callbacks ............................................................................... 63 Destruction callbacks ................................................................................ 64 Default initialization and destroy methods .................................................. 64 Combining lifecycle mechanisms ............................................................... 66 Startup and shutdown callbacks ................................................................ 66 Shutting down the Spring IoC container gracefully in non-web applications ................................................................................................................. 68 ApplicationContextAware and BeanNameAware ................................................. 68 Other Aware interfaces ..................................................................................... 69 4.7. Bean definition inheritance ................................................................................. 71 4.8. Container Extension Points ................................................................................ 72 Spring Framework 4.0.0.RELEASE Spring Framework Reference Documentation iv Customizing beans using a BeanPostProcessor ................................................. 72 Example: Hello World, BeanPostProcessor-style ........................................ 74 Example: The RequiredAnnotationBeanPostProcessor ............................... 75 Customizing configuration metadata with a BeanFactoryPostProcessor ................ 75 Example: the Class name substitution PropertyPlaceholderConfigurer .......... 76 Example: the PropertyOverrideConfigurer .................................................. 77 Customizing instantiation logic with a FactoryBean ............................................. 78 4.9. Annotation-based container configuration ............................................................ 79 @Required ....................................................................................................... 80 @Autowired ..................................................................................................... 80 Fine-tuning annotation-based autowiring with qualifiers ....................................... 83 Using generics as autowiring qualifiers .............................................................. 89 CustomAutowireConfigurer ................................................................................ 90 @Resource ...................................................................................................... 90 @PostConstruct and @PreDestroy .................................................................... 92 4.10. Classpath scanning and managed components ................................................. 92 @Component and further stereotype annotations ............................................... 93 Meta-annotations .............................................................................................. 93 Automatically detecting classes and registering bean definitions .......................... 94 Using filters to customize scanning ................................................................... 95 Defining bean metadata within components ....................................................... 96 Naming autodetected components ..................................................................... 97 Providing a scope for autodetected components ................................................ 98 Providing qualifier metadata with annotations ..................................................... 99 4.11. Using JSR 330 Standard Annotations ............................................................... 99 Dependency Injection with @Inject and @Named ............................................. 100 @Named: a standard equivalent to the @Component annotation ....................... 100 Limitations of the standard approach ............................................................... 101 4.12. Java-based container configuration ................................................................. 102 Basic concepts: @Bean and @Configuration ................................................... 102 Instantiating the Spring container using AnnotationConfigApplicationContext ....... 103 Simple construction ................................................................................ 103 Building the container programmatically using register(Class…) ........... 104 Enabling component scanning with scan(String…) .................................... 104 Support for web applications with AnnotationConfigWebApplicationContext ............................................................................................................... 105 Using the @Bean annotation .......................................................................... 106 Declaring a bean .................................................................................... 107 Receiving lifecycle callbacks ................................................................... 107 Specifying bean scope ............................................................................ 108 Customizing bean naming ....................................................................... 109 Bean aliasing ......................................................................................... 109 Bean description ..................................................................................... 110 Using the @Configuration annotation ............................................................... 110 Injecting inter-bean dependencies ............................................................ 110 Lookup method injection ......................................................................... 111 Further information about how Java-based configuration works internally .... 111 Composing Java-based configurations ............................................................. 112 Using the @Import annotation ................................................................. 112 Conditionally including @Configuration classes or @Beans ....................... 116 Spring Framework 4.0.0.RELEASE Spring Framework Reference Documentation v Combining Java and XML configuration ................................................... 117 4.13. Bean definition profiles and environment abstraction ........................................ 120 4.14. PropertySource Abstraction ............................................................................ 120 4.15. Registering a LoadTimeWeaver ...................................................................... 120 4.16. Additional Capabilities of the ApplicationContext .............................................. 120 Internationalization using MessageSource ........................................................ 121 Standard and Custom Events .......................................................................... 124 Convenient access to low-level resources ........................................................ 127 Convenient ApplicationContext instantiation for web applications ....................... 128 Deploying a Spring ApplicationContext as a J2EE RAR file ............................... 128 4.17. The BeanFactory ........................................................................................... 129 BeanFactory or ApplicationContext? ................................................................ 129 Glue code and the evil singleton ..................................................................... 131 5. Resources .................................................................................................................. 132 5.1. Introduction ..................................................................................................... 132 5.2. The Resource interface .................................................................................... 132 5.3. Built-in Resource implementations .................................................................... 133 UrlResource ................................................................................................... 133 ClassPathResource ........................................................................................ 133 FileSystemResource ....................................................................................... 134 ServletContextResource .................................................................................. 134 InputStreamResource ..................................................................................... 134 ByteArrayResource ......................................................................................... 134 5.4. The ResourceLoader ....................................................................................... 134 5.5. The ResourceLoaderAware interface ................................................................ 135 5.6. Resources as dependencies ............................................................................. 136 5.7. Application contexts and Resource paths .......................................................... 137 Constructing application contexts ..................................................................... 137 Constructing ClassPathXmlApplicationContext instances - shortcuts .......... 137 Wildcards in application context constructor resource paths ............................... 138 Ant-style Patterns ................................................................................... 138 The Classpath*: portability classpath*: prefix ............................................ 139 Other notes relating to wildcards ............................................................. 139 FileSystemResource caveats .......................................................................... 140 6. Validation, Data Binding, and Type Conversion ............................................................ 141 6.1. Introduction ..................................................................................................... 141 6.2. Validation using Spring’s Validator interface ...................................................... 141 6.3. Resolving codes to error messages .................................................................. 143 6.4. Bean manipulation and the BeanWrapper ......................................................... 144 Setting and getting basic and nested properties ............................................... 144 Built-in PropertyEditor implementations ............................................................ 146 Registering additional custom PropertyEditors .......................................... 149 6.5. Spring Type Conversion ................................................................................... 151 Converter SPI ................................................................................................ 151 ConverterFactory ............................................................................................ 152 GenericConverter ........................................................................................... 153 ConditionalGenericConverter ................................................................... 154 ConversionService API ................................................................................... 154 Configuring a ConversionService ..................................................................... 154 Using a ConversionService programmatically ................................................... 155 Spring Framework 4.0.0.RELEASE Spring Framework Reference Documentation vi 6.6. Spring Field Formatting .................................................................................... 155 Formatter SPI ................................................................................................. 156 Annotation-driven Formatting ........................................................................... 157 Format Annotation API ............................................................................ 158 FormatterRegistry SPI ..................................................................................... 159 FormatterRegistrar SPI ................................................................................... 159 Configuring Formatting in Spring MVC ............................................................. 159 6.7. Configuring a global date & time format ............................................................ 161 6.8. Spring Validation ............................................................................................. 163 Overview of the JSR-303 Bean Validation API ................................................. 163 Configuring a Bean Validation Provider ............................................................ 164 Injecting a Validator ................................................................................ 164 Configuring Custom Constraints .............................................................. 164 Additional Configuration Options .............................................................. 165 Configuring a DataBinder ................................................................................ 165 Spring MVC 3 Validation ................................................................................. 166 Triggering @Controller Input Validation .................................................... 166 Configuring a Validator for use by Spring MVC ......................................... 166 Configuring a JSR-303/JSR-349 Validator for use by Spring MVC .............. 167 7. Spring Expression Language (SpEL) ........................................................................... 168 7.1. Introduction ..................................................................................................... 168 7.2. Feature Overview ............................................................................................ 168 7.3. Expression Evaluation using Spring’s Expression Interface ................................. 169 The EvaluationContext interface ...................................................................... 171 Type Conversion .................................................................................... 171 7.4. Expression support for defining bean definitions ................................................ 172 XML based configuration ................................................................................ 172 Annotation-based configuration ........................................................................ 173 7.5. Language Reference ........................................................................................ 174 Literal expressions .......................................................................................... 174 Properties, Arrays, Lists, Maps, Indexers ......................................................... 174 Inline lists ....................................................................................................... 175 Array construction ........................................................................................... 175 Methods ......................................................................................................... 176 Operators ....................................................................................................... 176 Relational operators ................................................................................ 176 Logical operators .................................................................................... 177 Mathematical operators ........................................................................... 177 Assignment .................................................................................................... 178 Types ............................................................................................................. 178 Constructors ................................................................................................... 179 Variables ........................................................................................................ 179 The #this and #root variables .................................................................. 179 Functions ....................................................................................................... 180 Bean references ............................................................................................. 180 Ternary Operator (If-Then-Else) ....................................................................... 180 The Elvis Operator ......................................................................................... 181 Safe Navigation operator ................................................................................ 181 Collection Selection ........................................................................................ 182 Collection Projection ....................................................................................... 182 Spring Framework 4.0.0.RELEASE Spring Framework Reference Documentation vii Expression templating ..................................................................................... 183 7.6. Classes used in the examples .......................................................................... 183 8. Aspect Oriented Programming with Spring ................................................................... 187 8.1. Introduction ..................................................................................................... 187 AOP concepts ................................................................................................ 187 Spring AOP capabilities and goals ................................................................... 189 AOP Proxies .................................................................................................. 190 8.2. @AspectJ support ........................................................................................... 190 Enabling @AspectJ Support ............................................................................ 190 Enabling @AspectJ Support with Java configuration ................................. 190 Enabling @AspectJ Support with XML configuration ................................. 191 Declaring an aspect ........................................................................................ 191 Declaring a pointcut ........................................................................................ 192 Supported Pointcut Designators .............................................................. 192 Combining pointcut expressions .............................................................. 194 Sharing common pointcut definitions ........................................................ 194 Examples ............................................................................................... 196 Writing good pointcuts ............................................................................ 198 Declaring advice ............................................................................................. 199 Before advice ......................................................................................... 199 After returning advice .............................................................................. 200 After throwing advice .............................................................................. 200 After (finally) advice ................................................................................ 201 Around advice ........................................................................................ 202 Advice parameters .................................................................................. 203 Advice ordering ...................................................................................... 206 Introductions ................................................................................................... 206 Aspect instantiation models ............................................................................. 207 Example ......................................................................................................... 208 8.3. Schema-based AOP support ............................................................................ 209 Declaring an aspect ........................................................................................ 210 Declaring a pointcut ........................................................................................ 210 Declaring advice ............................................................................................. 212 Before advice ......................................................................................... 212 After returning advice .............................................................................. 212 After throwing advice .............................................................................. 213 After (finally) advice ................................................................................ 214 Around advice ........................................................................................ 214 Advice parameters .................................................................................. 215 Advice ordering ...................................................................................... 216 Introductions ................................................................................................... 217 Aspect instantiation models ............................................................................. 217 Advisors ......................................................................................................... 217 Example ......................................................................................................... 218 8.4. Choosing which AOP declaration style to use .................................................... 220 Spring AOP or full AspectJ? ........................................................................... 220 @AspectJ or XML for Spring AOP? ................................................................. 221 8.5. Mixing aspect types ......................................................................................... 222 8.6. Proxying mechanisms ...................................................................................... 222 Understanding AOP proxies ............................................................................ 223 Spring Framework 4.0.0.RELEASE Spring Framework Reference Documentation viii 8.7. Programmatic creation of @AspectJ Proxies ..................................................... 225 8.8. Using AspectJ with Spring applications ............................................................. 225 Using AspectJ to dependency inject domain objects with Spring ........................ 226 Unit testing @Configurable objects .......................................................... 228 Working with multiple application contexts ................................................ 228 Other Spring aspects for AspectJ .................................................................... 229 Configuring AspectJ aspects using Spring IoC ................................................. 229 Load-time weaving with AspectJ in the Spring Framework ................................. 230 A first example ....................................................................................... 231 Aspects .................................................................................................. 234 ' META-INF/aop.xml' ............................................................................... 234 Required libraries (JARS) ........................................................................ 234 Spring configuration ................................................................................ 235 Environment-specific configuration ........................................................... 237 8.9. Further Resources ........................................................................................... 239 9. Spring AOP APIs ....................................................................................................... 240 9.1. Introduction ..................................................................................................... 240 9.2. Pointcut API in Spring ...................................................................................... 240 Concepts ........................................................................................................ 240 Operations on pointcuts .................................................................................. 241 AspectJ expression pointcuts .......................................................................... 241 Convenience pointcut implementations ............................................................ 241 Static pointcuts ....................................................................................... 241 Dynamic pointcuts .................................................................................. 242 Pointcut superclasses ..................................................................................... 243 Custom pointcuts ............................................................................................ 243 9.3. Advice API in Spring ........................................................................................ 243 Advice lifecycles ............................................................................................. 243 Advice types in Spring .................................................................................... 244 Interception around advice ...................................................................... 244 Before advice ......................................................................................... 244 Throws advice ........................................................................................ 245 After Returning advice ............................................................................ 246 Introduction advice .................................................................................. 247 9.4. Advisor API in Spring ....................................................................................... 249 9.5. Using the ProxyFactoryBean to create AOP proxies ........................................... 250 Basics ............................................................................................................ 250 JavaBean properties ....................................................................................... 250 JDK- and CGLIB-based proxies ...................................................................... 251 Proxying interfaces ......................................................................................... 252 Proxying classes ............................................................................................ 254 Using global advisors ...................................................................................... 255 9.6. Concise proxy definitions ................................................................................. 255 9.7. Creating AOP proxies programmatically with the ProxyFactory ............................ 256 9.8. Manipulating advised objects ............................................................................ 257 9.9. Using the "auto-proxy" facility ........................................................................... 258 Autoproxy bean definitions .............................................................................. 258 BeanNameAutoProxyCreator ................................................................... 259 DefaultAdvisorAutoProxyCreator .............................................................. 259 AbstractAdvisorAutoProxyCreator ............................................................ 260 Spring Framework 4.0.0.RELEASE Spring Framework Reference Documentation ix Using metadata-driven auto-proxying ............................................................... 260 9.10. Using TargetSources ...................................................................................... 262 Hot swappable target sources ......................................................................... 263 Pooling target sources .................................................................................... 263 Prototype target sources ................................................................................. 265 ThreadLocal target sources ............................................................................. 265 9.11. Defining new Advice types ............................................................................. 265 9.12. Further resources ........................................................................................... 266 10. Testing ..................................................................................................................... 267 10.1. Introduction to Spring Testing ......................................................................... 267 10.2. Unit Testing ................................................................................................... 267 Mock Objects ................................................................................................. 267 Environment ........................................................................................... 267 JNDI ...................................................................................................... 267 Servlet API ............................................................................................. 267 Portlet API ............................................................................................. 268 Unit Testing support Classes .......................................................................... 268 General utilities ...................................................................................... 268 Spring MVC ........................................................................................... 268 10.3. Integration Testing ......................................................................................... 268 Overview ........................................................................................................ 268 Goals of Integration Testing ............................................................................ 269 Context management and caching ........................................................... 269 Dependency Injection of test fixtures ....................................................... 269 Transaction management ........................................................................ 270 Support classes for integration testing ..................................................... 270 JDBC Testing Support .................................................................................... 271 Annotations .................................................................................................... 271 Spring Testing Annotations ..................................................................... 271 Standard Annotation Support .................................................................. 276 Spring JUnit Testing Annotations ............................................................. 277 Meta-Annotation Support for Testing ........................................................ 278 Spring TestContext Framework ....................................................................... 279 Key abstractions ..................................................................................... 280 Context management .............................................................................. 281 Dependency injection of test fixtures ........................................................ 297 Testing request and session scoped beans .............................................. 299 Transaction management ........................................................................ 301 TestContext Framework support classes .................................................. 304 Spring MVC Test Framework .......................................................................... 306 Server-Side Tests ................................................................................... 306 Client-Side REST Tests .......................................................................... 312 PetClinic Example .......................................................................................... 313 10.4. Further Resources ......................................................................................... 314 IV. Data Access ..................................................................................................................... 316 11. Transaction Management .......................................................................................... 317 11.1. Introduction to Spring Framework transaction management .............................. 317 11.2. Advantages of the Spring Framework’s transaction support model ..................... 317 Global transactions ......................................................................................... 317 Local transactions ........................................................................................... 318 Spring Framework 4.0.0.RELEASE Spring Framework Reference Documentation x Spring Framework’s consistent programming model ......................................... 318 11.3. Understanding the Spring Framework transaction abstraction ............................ 319 11.4. Synchronizing resources with transactions ....................................................... 323 High-level synchronization approach ................................................................ 323 Low-level synchronization approach ................................................................. 323 TransactionAwareDataSourceProxy ................................................................. 324 11.5. Declarative transaction management ............................................................... 324 Understanding the Spring Framework’s declarative transaction implementation ... 325 Example of declarative transaction implementation ........................................... 326 Rolling back a declarative transaction .............................................................. 330 Configuring different transactional semantics for different beans ........................ 331 settings ....................................................................................... 333 Using @Transactional ..................................................................................... 335 @Transactional settings .......................................................................... 339 Multiple Transaction Managers with @Transactional ................................. 340 Custom shortcut annotations ................................................................... 341 Transaction propagation .................................................................................. 341 Required ................................................................................................ 342 RequiresNew .......................................................................................... 342 Nested ................................................................................................... 343 Advising transactional operations ..................................................................... 343 Using @Transactional with AspectJ ................................................................. 346 11.6. Programmatic transaction management ........................................................... 347 Using the TransactionTemplate ....................................................................... 347 Specifying transaction settings ................................................................ 349 Using the PlatformTransactionManager ............................................................ 349 11.7. Choosing between programmatic and declarative transaction management ........ 350 11.8. Application server-specific integration .............................................................. 350 IBM WebSphere ............................................................................................. 351 Oracle WebLogic Server ................................................................................. 351 11.9. Solutions to common problems ....................................................................... 351 Use of the wrong transaction manager for a specific DataSource ....................... 351 11.10. Further Resources ....................................................................................... 351 12. DAO support ............................................................................................................ 352 12.1. Introduction .................................................................................................... 352 12.2. Consistent exception hierarchy ....................................................................... 352 12.3. Annotations used for configuring DAO or Repository classes ............................ 353 13. Data access with JDBC ............................................................................................ 355 13.1. Introduction to Spring Framework JDBC .......................................................... 355 Choosing an approach for JDBC database access ........................................... 355 Package hierarchy .......................................................................................... 356 13.2. Using the JDBC core classes to control basic JDBC processing and error handling ................................................................................................................. 357 JdbcTemplate ................................................................................................. 357 Examples of JdbcTemplate class usage ................................................... 357 JdbcTemplate best practices ................................................................... 359 NamedParameterJdbcTemplate ....................................................................... 361 SQLExceptionTranslator .................................................................................. 363 Executing statements ...................................................................................... 365 Running queries ............................................................................................. 365 Spring Framework 4.0.0.RELEASE Spring Framework Reference Documentation xi Updating the database .................................................................................... 366 Retrieving auto-generated keys ....................................................................... 367 13.3. Controlling database connections .................................................................... 367 DataSource .................................................................................................... 367 DataSourceUtils .............................................................................................. 369 SmartDataSource ........................................................................................... 369 AbstractDataSource ........................................................................................ 369 SingleConnectionDataSource .......................................................................... 369 DriverManagerDataSource .............................................................................. 369 TransactionAwareDataSourceProxy ................................................................. 370 DataSourceTransactionManager ...................................................................... 370 NativeJdbcExtractor ........................................................................................ 370 13.4. JDBC batch operations .................................................................................. 371 Basic batch operations with the JdbcTemplate ................................................. 371 Batch operations with a List of objects ............................................................. 372 Batch operations with multiple batches ............................................................ 373 13.5. Simplifying JDBC operations with the SimpleJdbc classes ................................ 374 Inserting data using SimpleJdbcInsert .............................................................. 374 Retrieving auto-generated keys using SimpleJdbcInsert .................................... 375 Specifying columns for a SimpleJdbcInsert ...................................................... 376 Using SqlParameterSource to provide parameter values ................................... 376 Calling a stored procedure with SimpleJdbcCall ............................................... 377 Explicitly declaring parameters to use for a SimpleJdbcCall ............................... 379 How to define SqlParameters .......................................................................... 380 Calling a stored function using SimpleJdbcCall ................................................. 381 Returning ResultSet/REF Cursor from a SimpleJdbcCall ................................... 381 13.6. Modeling JDBC operations as Java objects ..................................................... 382 SqlQuery ........................................................................................................ 383 MappingSqlQuery ........................................................................................... 383 SqlUpdate ...................................................................................................... 384 StoredProcedure ............................................................................................. 385 13.7. Common problems with parameter and data value handling .............................. 388 Providing SQL type information for parameters ................................................. 389 Handling BLOB and CLOB objects .................................................................. 389 Passing in lists of values for IN clause ............................................................ 390 Handling complex types for stored procedure calls ........................................... 391 13.8. Embedded database support .......................................................................... 392 Why use an embedded database? .................................................................. 392 Creating an embedded database instance using Spring XML ............................ 392 Creating an embedded database instance programmatically .............................. 392 Extending the embedded database support ...................................................... 393 Using HSQL ................................................................................................... 393 Using H2 ........................................................................................................ 393 Using Derby ................................................................................................... 393 Testing data access logic with an embedded database ..................................... 393 13.9. Initializing a DataSource ................................................................................. 394 Initializing a database instance using Spring XML ............................................. 394 Initialization of Other Components that Depend on the Database ............... 395 14. Object Relational Mapping (ORM) Data Access .......................................................... 397 14.1. Introduction to ORM with Spring ..................................................................... 397 Spring Framework 4.0.0.RELEASE Spring Framework Reference Documentation xii 14.2. General ORM integration considerations ......................................................... 398 Resource and transaction management ........................................................... 398 Exception translation ....................................................................................... 399 14.3. Hibernate ....................................................................................................... 399 SessionFactory setup in a Spring container ...................................................... 400 Implementing DAOs based on plain Hibernate 3 API ........................................ 400 Declarative transaction demarcation ................................................................ 402 Programmatic transaction demarcation ............................................................ 404 Transaction management strategies ................................................................ 405 Comparing container-managed and locally defined resources ............................ 407 Spurious application server warnings with Hibernate ......................................... 408 14.4. JDO .............................................................................................................. 409 PersistenceManagerFactory setup ................................................................... 409 Implementing DAOs based on the plain JDO API ............................................. 410 Transaction management ................................................................................ 412 JdoDialect ...................................................................................................... 413 14.5. JPA ............................................................................................................... 414 Three options for JPA setup in a Spring environment ........................................ 414 LocalEntityManagerFactoryBean .............................................................. 414 Obtaining an EntityManagerFactory from JNDI ......................................... 415 LocalContainerEntityManagerFactoryBean ............................................... 415 Dealing with multiple persistence units ..................................................... 417 Implementing DAOs based on plain JPA .......................................................... 418 Transaction Management ................................................................................ 420 JpaDialect ...................................................................................................... 421 15. Marshalling XML using O/X Mappers ......................................................................... 423 15.1. Introduction .................................................................................................... 423 Ease of configuration ...................................................................................... 423 Consistent Interfaces ...................................................................................... 423 Consistent Exception Hierarchy ....................................................................... 423 15.2. Marshaller and Unmarshaller .......................................................................... 423 Marshaller ...................................................................................................... 423 Unmarshaller .................................................................................................. 424 XmlMappingException ..................................................................................... 425 15.3. Using Marshaller and Unmarshaller ................................................................. 425 15.4. XML Schema-based Configuration .................................................................. 427 15.5. JAXB ............................................................................................................. 427 Jaxb2Marshaller ............................................................................................. 428 XML Schema-based Configuration ........................................................... 428 15.6. Castor ........................................................................................................... 429 CastorMarshaller ............................................................................................ 429 Mapping ......................................................................................................... 429 XML Schema-based Configuration ........................................................... 429 15.7. XMLBeans ..................................................................................................... 430 XmlBeansMarshaller ....................................................................................... 430 XML Schema-based Configuration ........................................................... 430 15.8. JiBX .............................................................................................................. 431 JibxMarshaller ................................................................................................ 431 XML Schema-based Configuration ........................................................... 431 15.9. XStream ........................................................................................................ 432 Spring Framework 4.0.0.RELEASE Spring Framework Reference Documentation xiii XStreamMarshaller ......................................................................................... 432 V. The Web ........................................................................................................................... 434 16. Web MVC framework ................................................................................................ 435 16.1. Introduction to Spring Web MVC framework .................................................... 435 Features of Spring Web MVC ......................................................................... 436 Pluggability of other MVC implementations ...................................................... 437 16.2. The DispatcherServlet .................................................................................... 437 Special Bean Types In the WebApplicationContext ........................................... 440 Default DispatcherServlet Configuration ........................................................... 441 DispatcherServlet Processing Sequence .......................................................... 441 16.3. Implementing Controllers ................................................................................ 443 Defining a controller with @Controller .............................................................. 443 Mapping Requests With Using @RequestMapping ........................................... 444 New Support Classes for @RequestMapping methods in Spring MVC 3.1 .. 446 URI Template Patterns ........................................................................... 447 URI Template Patterns with Regular Expressions ..................................... 448 Path Patterns ......................................................................................... 449 Patterns with Placeholders ...................................................................... 449 Matrix Variables ...................................................................................... 449 Consumable Media Types ....................................................................... 450 Producible Media Types .......................................................................... 451 Request Parameters and Header Values ................................................. 451 Defining @RequestMapping handler methods .................................................. 452 Supported method argument types .......................................................... 452 Supported method return types ............................................................... 454 Binding request parameters to method parameters with @RequestParam ... 455 Mapping the request body with the @RequestBody annotation .................. 456 Mapping the response body with the @ResponseBody annotation ............. 457 Creating REST Controllers with the @RestController annotation ................ 457 Using HttpEntity ...................................................................................... 457 Using @ModelAttribute on a method ....................................................... 458 Using @ModelAttribute on a method argument ......................................... 459 Using @SessionAttributes to store model attributes in the HTTP session between requests ................................................................................... 461 Specifying redirect and flash attributes ..................................................... 461 Working with "application/x-www-form-urlencoded" data ............................ 462 Mapping cookie values with the @CookieValue annotation ........................ 462 Mapping request header attributes with the @RequestHeader annotation ... 463 Method Parameters And Type Conversion ............................................... 463 Customizing WebDataBinder initialization ................................................. 464 Support for the Last-Modified Response Header To Facilitate Content Caching ................................................................................................. 465 Assisting Controllers with the @ControllerAdvice annotation ...................... 465 Asynchronous Request Processing .................................................................. 466 Exception Handling for Async Requests ................................................... 467 Intercepting Async Requests ................................................................... 467 Configuration for Async Request Processing ............................................ 468 Testing Controllers ......................................................................................... 469 16.4. Handler mappings .......................................................................................... 469 Intercepting requests with a HandlerInterceptor ................................................ 469 Spring Framework 4.0.0.RELEASE Spring Framework Reference Documentation xiv 16.5. Resolving views ............................................................................................. 471 Resolving views with the ViewResolver interface .............................................. 471 Chaining ViewResolvers ................................................................................. 473 Redirecting to views ....................................................................................... 474 RedirectView .......................................................................................... 474 The redirect: prefix ................................................................................. 475 The forward: prefix ................................................................................. 475 ContentNegotiatingViewResolver ..................................................................... 475 16.6. Using flash attributes ..................................................................................... 478 16.7. Building URIs ................................................................................................. 479 16.8. Building URIs to Controllers and methods ....................................................... 480 16.9. Using locales ................................................................................................. 480 Obtaining Time Zone Information .................................................................... 481 AcceptHeaderLocaleResolver .......................................................................... 481 CookieLocaleResolver ..................................................................................... 481 SessionLocaleResolver ................................................................................... 481 LocaleChangeInterceptor ................................................................................ 482 16.10. Using themes ............................................................................................... 482 Overview of themes ........................................................................................ 482 Defining themes ............................................................................................. 482 Theme resolvers ............................................................................................. 483 16.11. Spring’s multipart (file upload) support ........................................................... 483 Introduction .................................................................................................... 483 Using a MultipartResolver with Commons FileUpload ........................................ 484 Using a MultipartResolver with Servlet 3.0 ....................................................... 484 Handling a file upload in a form ...................................................................... 484 Handling a file upload request from programmatic clients .................................. 486 16.12. Handling exceptions ..................................................................................... 486 HandlerExceptionResolver ............ ...展开收缩

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