java - 使用 Spring MVC 请求后接收 HTTP 状态

Question

我正在向服务器发送数据，我想接收 HTTP 响应状态以检查此状态并提供适当的 View

   @RequestMapping(method = RequestMethod.POST)
     public String Login(@ModelAttribute("Attribute") Login login, Model model,HttpServletRequest request) {

          // Prepare acceptable media type
          ArrayList<MediaType> acceptableMediaTypes = new ArrayList<MediaType>();
          acceptableMediaTypes.add(MediaType.APPLICATION_XML);

          // Prepare header
          HttpHeaders headers = new HttpHeaders();
          headers.setAccept(acceptableMediaTypes);

          HttpEntity<Login> entity = new HttpEntity<Login>(login, headers);

          // Send the request as POST
          try {
           ResponseEntity<Login> result = restTemplate.exchange("http://www.../user/login/", 
                   HttpMethod.POST, entity, Login.class);
          } catch (Exception e) {
          }
      //here i want to check the received status
      if(status=="OK"){
         return "login"
      }
      else          
      return "redirect:/home";
     }

Answer 1

有什么问题:

HttpStatus status = result.getStatusCode();
if(status == HttpStatus.OK)

参见:ResponseEntity Java文档。

顺便说一句，你不应该像这里那样使用 == 运算符比较字符串:

status=="OK"

改为使用以下成语:

"OK".equals(status)

Java 中的方法名称也倾向于以小写字母开头。