json - 客户端发送的请求在语法上不正确()。+ Spring，RESTClient

Question

我正在使用JSON对象使用Spring MVC。当我尝试从RESTClient发送JSON对象时，

HTTP Status 400 - The request sent by the client was syntactically incorrect ().

这是我的 Controller

ObjectMapper mapper=new ObjectMapper();
@RequestMapping(value = "/addTask", method = RequestMethod.GET)
       public ModelAndView addTask(@RequestParam("json") String json) throws JsonParseException, JsonMappingException, IOException 
       {
          System.out.println("Json object from REST : "+json);
          Task task=(Task) mapper.readValue(json, Task);
          service.addService(task);
          return new ModelAndView("Result");
       }

我的要求网址: http://localhost:8080/Prime/addTask
我的Json对象:

{"taskName":"nothing","taskId":1234,"taskDesc":"nothing doing"}

我也尝试在RESTClient中指定“Content-Type:application/json”，但仍然收到相同的错误

Answer 1

试试这个

改变

@RequestParam("json") String json

至

 @RequestBody Task task

如果您对POST方法不感兴趣，可以尝试一下

从更改您的Controller方法

@RequestMapping(value = "/addTask", method = RequestMethod.GET)
   public ModelAndView addTask(@RequestParam("json") String json)

至

@RequestMapping(value = "/addTask/{taskName}/{taskId}/{taskDesc}", method = RequestMethod.GET)
   public ModelAndView addTask(@RequestParam("taskName") String taskName,
@RequestParam("taskId") String taskId,@RequestParam("taskDesc") String taskDesc)

并将您的URL更改为

http://localhost:8080/Prime/addTask/mytask/233/testDesc