Spring mvc 返回json格式

一、使用maven管理jar。[html] view plaincopyprint?<dependency><groupId>org.codehaus.jackson</groupId><artifactId>jackson-core-lgpl</artifactId><version>1.9.6</version></dependency><dependency><groupId>org.codehaus.jackson</groupId><artifactId>jackson-core-asl</artifactId><version>1.9.4</version></dependency><dependency><groupId>org.codehaus.jackson</groupId><artifactId>jackson-mapper-asl</artifactId><version>1.9.5</version></dependency><dependency><groupId>org.codehaus.jackson</groupId><artifactId>jackson-mapper-lgpl</artifactId><version>1.9.6</version></dependency>二、配置spring-servlet.xml:[html] view plaincopyprint?<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"><property name="messageConverters"><list ><ref bean="mappingJacksonHttpMessageConverter" /></list></property></bean>mappingJacksonHttpMessageConverter ： 用来处理json格式转换[html] view plaincopyprint?<bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"><property name="supportedMediaTypes"><list><value>application/json;charset=UTF-8</value></list></property></bean>1、如果 mappingJacksonHttpMessageConverter 可以 直接写成如下：[html] view plaincopyprint?<bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />这样默认应该是 ：ISO-88859-12、supportedMediaTypes 的 list 里面 可以写多个value<list><value>apolication/json; charset=UTF-8</value><value>text/html;charset=UTF-8</value></list>三、controller 配置@ResponseBody[java] view plaincopyprint?@Controllerpublic class LoginController {@RequestMapping(value="/validataUser.json")@ResponseBodypublic Map<String,Object> validataUser(@RequestParam String userName){logger.info(" validata user : {}",userName);Map<String,Object> map = new HashMap<String,Object>();map.put("code", true);return map;}

}四：页面上仍然按照原来的ajax区json的格式一样、题外话：关于 @ResponseBody：将内容或对象作为 HTTP 响应正文返回，使用@ResponseBody将会跳过视图处理部分，而是调用适合HttpMessageConverter，将返回值写入输出流。