下面是官方文檔對於@ResponseBody註解的解釋：
Mapping the response body with the @ResponseBody annotation The @ResponseBody annotation is similar to @RequestBody. This annotation can be put on a method and indicates that the return type should be written straight to the HTTP response body (and not placed in a Model, or interpreted as a view name). For example: @RequestMapping(path = "/something", method = RequestMethod.PUT) @ResponseBody public String helloWorld() { return "Hello World"; } The above example will result in the text Hello World being written to the HTTP response stream. As with @RequestBody, Spring converts the returned object to a response body by using an HttpMessageConverter. For more information on these converters, see the previous section and Message Converters.@ResopnseBody註解能夠直接把控制器返回變量（String）直接返回給瀏覽器,也可以通過配置後，把對象序列化成Json數據返回給瀏覽器！如果為null 就會返回空白。
怎麼配置呢？需要配置MessageConverter:
<bean > <property name="messageConverters"> <list> <ref bean="mappingJackson2HttpMessageConverter" /> </list> </property> </bean> <bean id="mappingJackson2HttpMessageConverter" > <property name="supportedMediaTypes"> <list> <value>text/html;charset=UTF-8</value> <value>text/json;charset=UTF-8</value> <value>application/json;charset=UTF-8</value> </list> </property> </bean>
下面貼出在官方文檔中的位置：
這個需要jackson jar包支持，需要jackson-annotations,jackson-core,jackson-databind三個包，：
控制器代碼：
@RequestMapping("House/ClassManager/addByAjax") @ResponseBody public HanBlog_Class ClassManager_addByAjax(HttpServletRequest request){ if(request.getSession().getAttribute("hanblog_uid")==null) return null; HanBlog_Class objClass=new HanBlog_Class(); return objClass; }jquery代碼：
//|增加$("#hanblog_add_btn").click(function(){ var classname=$("#add_input_name").val(); var classintroduction=$("#add_input_introduction").val(); alert("分類名稱:"+classname+"分類介紹:"+classintroduction); $.get("<c:url value="/House/ClassManager/addByAjax.do" />",function(result){ alert(result); }); });運行返回例子：
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。