我正在使用Spring Boot 1.2有FrontEnd Web应用程序和Backend Web应用程序 . FrontEnd Web应用程序使用Angular和Spring Boot 1.2构建 . FrontEnd Web应用程序使用Spring Boot 1.2构建 .

FrontEnd Web应用程序使用RestTemplate调用BackEnd Web应用程序 . 从FrontEnd Web应用程序到BackEnd Web应用程序使用RestTemplate的所有GET请求始终正常 .

POST请求一直使用RestTemplate are not . 在10个POST请求中,1个POST请求导致 400 BAD REQUEST .

POST请求始终发布JSON . RestTemplate已配置为设置“Accept”(“application / json”)和“Content-Type”(“application / json”)标头 .

RestTemplate抛出的错误是

{
    "timestamp": "2015-04-04 18:35:50",
    "errorCode": "BAD_REQUEST", 
    "message": "400 Bad Request",
    "data": "<html><body><h1>400 Bad request</h1> Your browser sent an invalid request. </body></html>"
}

任何见解将不胜感激 . 是Spring抛出此异常还是Tomcat抛出此异常?

FrontEnd应用程序有以下终点:

@RequestMapping(value = "/manage/user", method =RequestMethod.POST, 
      consumes = { "application/json" }, produces = { "application/json" }) 
@ResponseBody public UserResponse manageUser(@RequestBody User user) { 
   ...
   RestTemplate restTemplate = new RestTemplate();
   HttpHeaders httpHeaders = new HttpHeaders();
   httpHeaders.setAccept(Arrays.asList(MediaType.APPLICATION_XML,
            MediaType.APPLICATION_JSON, MediaType.TEXT_PLAIN));
   httpHeaders.setContentType(MediaType.APPLICATION_JSON);
   HttpEntity<User> entity = new HttpEntity<>(user, httpHeaders);
   // Call back-end application
   UserResponse userResponse = 
       restTemplate.postForObject(userServiceURL, user, UserResponse.class);
   // Random 400 occurs here, thrown by RestTemplate.postForObject()
   ...
   return userResponse;
}

BackEnd应用程序有以下终点:

@RequestMapping(value = "/user", method =RequestMethod.POST, 
     consumes = { "application/json" }, produces = { "application/json" }) 
@ResponseBody public UserResponse create(@RequestBody User user) { 
  ...
  // save update user 
  ...
}