web 后台返回json格式数据的方式（status 406）

1.在类上使用注解 

@RestController
public class HttpComentInterface {}

2.在方法是使用注解  @ResponseBody

 　　@RequestMapping(path = "/interface/queryRemote", method = RequestMethod.POST) //可以指定请求方式@ResponseBody public RemoteCommentResultData queryCommentPage(@RequestBody QueryCommentParamDTO queryCommentParamDTO, HttpServletRequest request) {
}

3.使用 out

　　@RequestMapping(value ="/GetSomeInfos" ,produces = "application/json;charset=UTF-8")public ModelAndView getNearestAirport(HttpServletRequest request, HttpServletResponse response)throws Exception {logger.info("NearestAirportController.getNearestAirport begin");RemoteAirportsData data = nearestAirportService.getNearestAirports();response.setContentType("text/html;charset=UTF-8");response.setCharacterEncoding("UTF-8");String result = JSONObject.fromObject(data).toString();response.getWriter().print(result);logger.info("NearestAirportController.getNearestAirport end");return null;}

4.如果出现了 status 406 则是项目中缺少  jackson-core-asl-1.9.12.jar，jackson-mapper-asl-1.9.12.jar 这两个包

引起的原因：
由于设置了@ResponseBody,要把对象转换成json格式，缺少转换依赖的jar包，故此错。

 

也可以用response返回结果，就不用手动去加这两个jar包了