An MVC application based on annotation configuration

1. requestmapping Annotation Application

@RequestMapping can be used on class definitions and method definitions

@RequestMapping indicate which customer request this class or method corresponds to

Turn on the @requestmapping annotation map, Need to define the requestmappinghandlermapping (before class definition) and Requestmappinghandleradapter (before the method definition) two bean components in the spring XML configuration file

Tips:

Defaultannotationhandlermapping and Annotationmethodhandleradapter two components need to be defined before Spring3.1 version

Requestmappinghandlermapping and requestmappinghandleradapter Two bean component definition examples

 <!-- requestmappinghandlermapping  -->  bean  class  = " Org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping "  />  <!--  -->   bean  class  = "Org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"  />  

Starting with the Spring3.2 version, you can use the following XML configuration to simplify the requestmappinghandlermapping and Requestmappinghandleradapter definitions

</>

2. Controller annotation Application

It is recommended to declare the controller component using the @controller annotation, which makes the controller definition more flexible, without implementing the Controller interface, and the method of request processing can be flexibly defined

@Controller

For the @controller annotation to take effect, the component scan definition needs to be turned on in the spring XML configuration file, and the package containing the controller component is specified

<!-- opening @controller Annotations  - <  base-package= "Com.tarena.controller"/>

MVC apps based on annotation configuration