spring mvc 起用的注解功能和自动转换功能的实现

<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">

StringHttpMessageConverter： that can read and write Strings from the HTTP request and response.

FormHttpMessageConverter：that can read and write form data from the HTTP request and response.

ByteArrayMessageConverter：that can read and write byte arrays from the HTTP request and response.

MarshallingHttpMessageConverter：XML的转换需要使用Spring的 Marshaller 和 Unmarshaller.

MappingJacksonHttpMessageConverter：JSON的转换.

SourceHttpMessageConverter：能够读/写来自HTTP的请求与响应的javax.xml.transform.Source ,支持DOMSource, SAXSource, 和 StreamSource 的XML格式

BufferedImageHttpMessageConverter：that can read and write java.awt.image.BufferedImage from the HTTP request and response

起用JSON转换功能

xml

<!--<br /> <br /> Code highlighting produced by Actipro CodeHighlighter (freeware)<br /> http://www.CodeHighlighter.com/<br /> <br /> --> 1     <!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射 -->
 2     <bean
 3         class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
 4         <property name="messageConverters">
 5             <util:list id="beanList">
 6                 <ref bean="stringHttpMessageConverter" />
 7                 <ref bean="jsonHttpMessageConverter" />
 8                 <ref bean="marshallingHttpMessageConverter" />
 9             </util:list>
10         </property>
11     </bean>
12 
13     <bean id="stringHttpMessageConverter"
14         class="org.springframework.http.converter.StringHttpMessageConverter" />
15     <bean id="jsonHttpMessageConverter"
16         class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />
17     <bean id="marshallingHttpMessageConverter"
18         class="org.springframework.http.converter.xml.MarshallingHttpMessageConverter">
19         <property name="marshaller" ref="castorMarshaller" />
20         <property name="unmarshaller" ref="castorMarshaller" />
21     </bean>
22 
23     <bean id="castorMarshaller" class="org.springframework.oxm.castor.CastorMarshaller" />
24 

MappingJacksonHttpMessageConverter能够将POJO对象自动转换为JSON对象

<!--<br /> <br /> Code highlighting produced by Actipro CodeHighlighter (freeware)<br /> http://www.CodeHighlighter.com/<br /> <br /> -->    @RequestMapping(value = "/getPojoJson" , method=RequestMethod.GET)
    public @ResponseBody Pojo getPojoJson() {
      Pojo pojo=new Pojo();
      pojo.setA("test");
      pojo.setB(1);
      pojo.setD(new Date());
      return pojo;
    }

需要依赖JSON对象的处理JAR包
jackson-core-lgpl.jar
jackson-mapper-lgpl.jar
下载地址:
http://jackson.codehaus.org/

转自 http://www.blogjava.net/wmcoo/articles/333472.html

 

我自己的工作用到的配置代码：

 

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:beans="http://www.springframework.org/schema/beans"
 xmlns:context="http://www.springframework.org/schema/context"
 xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
  http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
  http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">

 <!-- DispatcherServlet Context: defines this servlet's request-processing
  infrastructure -->

 <!-- Enables the Spring MVC @Controller programming model -->

 <beans:bean
  class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
  <beans:property name="messageConverters">
   <beans:list>
   <!-- 解决spring mvc 返回乱码问题 -->
    <beans:bean
     class="org.springframework.http.converter.StringHttpMessageConverter">
     <beans:property name="supportedMediaTypes">
      <beans:list>
       <beans:value>text/plain;charset=UTF-8</beans:value>
      </beans:list>
     </beans:property>
    </beans:bean>
    <!-- json转换器，bean可以自动转换json -->
    <beans:bean id="jacksonMessageConverter"
     class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />
   </beans:list>
  </beans:property>
 </beans:bean>
 
 <annotation-driven />

 <!-- Handles HTTP GET requests for /resources/** by efficiently serving
  up static resources in the ${webappRoot}/resources directory -->
 <resources mapping="/**" location="/resources/" />

 <!-- Resolves views selected for rendering by @Controllers to .jsp resources
  in the /WEB-INF/views directory -->
 <beans:bean
  class="org.springframework.web.servlet.view.InternalResourceViewResolver">
  <beans:property name="prefix" value="/WEB-INF/views/" />
  <beans:property name="suffix" value=".jsp" />
 </beans:bean>
 <!-- <beans:bean id="viewResolver" -->
 <!-- class="org.springframework.web.servlet.view.UrlBasedViewResolver"> -->
 <!-- <beans:property name="viewClass"> -->
 <!-- <beans:value>org.springframework.web.servlet.view.tiles2.TilesView -->
 <!-- </beans:value> -->
 <!-- </beans:property> -->
 <!-- </beans:bean> -->

 <!-- tiles配置器 -->
 <!-- <beans:bean id="tilesConfigurer" -->
 <!-- class="org.springframework.web.servlet.view.tiles2.TilesConfigurer"> -->
 <!-- <beans:property name="definitions"> -->
 <!-- <beans:list> -->
 <!-- <beans:value>/WEB-INF/layouts/layouts.xml</beans:value> -->
 <!-- <beans:value>/WEB-INF/views/**/views.xml</beans:value> -->
 <!-- </beans:list> -->
 <!-- </beans:property> -->
 <!-- </beans:bean> -->

 <context:component-scan base-package="com.ailong.web" />

</beans:beans>

 

评论

1 楼 cyheye 2012-10-24  

谢谢！
对AnnotationMethodHandlerAdapter，有个大概的了解~~~~~~~~~