Spring MVC hello world annotation example(中英文对照).docx

Spring MVC hello world annotation example（中英文对照）大白菜翻译BLOG：/xiaolincc26/homeIn thistutorial, it shows how to create a Spring MVC annotation-based hello world example.在这篇文中，展示的是如何创建一个Spring MVC基于注解的hello world例子。Note（注意）This annotation-based example is converted from the last Spring MVC hello world XML-based example. So, please compare and spots the different.这个基于注解的例子是基于Spring MVC hello world XML-based进行修改。因此，请比较和发现它们的不同地方。1.Spring DependencySpring依赖To use the Springs annotation, just include the core Spring libraries.使用Spring的注解功能，只要包含一个Spring核心库文件。org.springframeworkspring2.5.6org.springframeworkspring-webmvc2.5.62.Controller & Handler Mapping控制和处理的映射With Spring MVC annotation,基于Spring MVC注解1.Controller The controller class is no longer need to extends base controller likeAbstractController orSimpleFormController, just simply annotate the class with aController annotation.控制控制类无需再扩展基础控制像抽象控制或者SimpleFormController，只需要通过一个简单的注解Controller注释。2.Handler Mapping No more declaration for the handler mapping likeBeanNameUrlHandlerMapping,ControllerClassNameHandlerMapping orSimpleUrlHandlerMapping,all are replaced with a standardRequestMappingannotation.处理映射不再为处理映射做定义像BeanNameUrlHandlerMapping,ControllerClassNameHandlerMapping或者SimpleUrlHandlerMapping，取代它们全部的是一个标准的RequestMapping注解。HelloWorldCmon.controller;importorg.springframework.stereotype.Controller;importorg.springframework.web.bind.annotation.RequestMapping;importorg.springframework.web.bind.annotation.RequestMethod;importorg.springframework.web.servlet.ModelAndView;ControllerRequestMapping(/helloworld)publicclass HelloWorldControllerRequestMapping(method = RequestMethod.GET)public ModelAndView helloWorld()ModelAndView model =new ModelAndView(HelloWorldPage);model.addObject(msg, hello world);return model;If theRequestMappingis applied at class level (canapply at method level for multi-actions controller), it required to put aRequestMethodto indicate which method to handle the mapping request.如果 RequestMapping是应用于类一级（可以使用方法一级适用于multi-actions controller），它要求放置一个RequestMethod来表示处理方法的请求映射关系。In this case, if an URL “/helloworld”is requested, it will map to thisHelloWorldController, and handle the request withhelloWorld()method.既然这样，如果一个URL“/helloworld”发送请求，它将会映射到HelloWorldController，并且通过helloWorld()方法处理请求。3. View ResolverSadly, you are still required to configure the view resolver.令人遗憾的是，你依然需要配置veiwResolver。/WEB-INF/pages/.jsp4. ViewA simple JSP for demonstration.一个简单的JSP示例。Spring MVC Hello World Annotation Example$msg5. Components Auto Scanning自动扫描主件To make the annotation work, you have to enable theSprings auto component scanning feature through the element.为了使注释工作起来，你必须通过元素提供spring自动扫描主件功能。NoteYou may interest at this Spring auto scanning components article.你可能对Spring auto scanning components这篇文章感兴趣。6. Spring ConfigurationSee a complete Springconfiguration file.看一个完整的spring配置文件。mvc-dispatcher-servlet.xml/WEB-INF/pages/.jsp7. web.xmlNo exception, you are still required to configure the web.xml to enable the Spring MVC features.毫无疑问，你依然被要求配置web.xml才能使spring MVC发挥作用。web.xml.mvc-dispatcherorg.springframework.web.servlet.DispatcherServlet1mvc-dispatcher*.htmcontextConfigLocation/WEB-INF/mvc-dispatcher-servlet.xmlorg.springframework.web.context.ContextLoaderListener.8. DemoAccess it, URL :http:/localhost:8080/SpringMVC/helloworld.htm输入并运行URL：http:/localhost:8080/SpringMVC/helloworld.htmNoteIf you compare this Spring MVC annotation-based hello world example with thisXML-based example, you can see the annotation approach is more easier and flexible in wiring the controller class and URL handler mapping, be