SrpingMVC 返回JSON

springmvc配置文件需加入

<beanclass="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"/>
<beanclass="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<propertyname="messageConverters">
<list>
<refbean="mappingJacksonHttpMessageConverter"/>
</list>
</property>
</bean>
<beanid="mappingJacksonHttpMessageConverter"
class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
<propertyname="supportedMediaTypes">
<list>
<value>text/html;charset=UTF-8</value>
</list>
</property>
</bean>
<context:annotation-config/>

注入springmvc配置文件中不要加入

<!--使用注解解析也就是DefaultAnnotationHandlerMapping-->
<mvc:annotation-driven/>

需要2个Jar包

<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.8.4</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.8.4</version>
</dependency>

使用如下：

@RequestMapping(value="/create!save.do")
@ResponseBody
publicObjectcreate(@ModelAttributeUseruser)throwsException{
userService.insert(user);
returnuser;
}