SpringMVC——数据乱码问题

 @RequestMapping(value = "/secondRequest*",produces="text/json;charset=utf-8",method = RequestMethod.GET)//这里method用来指定请求方式
    @ResponseBody
    public String secondRequest(HttpServletRequest request,HttpServletResponse response,ModelMap model) throws IOException {

        model.addAttribute("user","李四");
        return "姓名：李四，年龄：16";
    }

<filter>
    <filter-name>characterEncodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <!--初始化参数-->
    <init-param>
      <param-name>encoding</param-name>
      <param-value>UTF-8</param-value>
    </init-param>
    <!--强制使用UTF-8编码-->
    <init-param>
      <param-name>forceEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>characterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>