@ExceptionHandler不使用@EnableWebMvc，为ResponseEntity返回HttpMediaTypeNotAcceptableException（406）

3 回答

• 0

  使用@RestController，

  无需使用@ResponseBody，您可以查看文档以获取更多详细信息 .

  • 确保您的请求映射工作并记录某些内容 .

  • 使用@RestControllerAdvice for @RestController

  回复于 2024-04-19T00:54:36+08:00
• 0

  1.  
                  @RestController
                  @RequestMapping(value = { "/testing" })
                  public class ExceptionController {
                       @GetMapping(value = "/testA", produces = MediaType.APPLICATION_JSON_VALUE)
                          public  ResponseEntity<Object> testA(@RequestParam String id) throws IOException   
                          {       
                              if(id.equals("123"))
                              {
                                  throw new IOException("customized exception");
                              }
  
                              Map<String,Object> body = new HashMap<String, Object>();
                              body.put("hello", "hihi");
  
                              return new ResponseEntity<Object>(body, HttpStatus.OK);     
                          }
                       @GetMapping(value = "/testB", produces = MediaType.APPLICATION_JSON_VALUE)
                          public  String testB(@RequestParam String id) throws IOException 
                          {
                              if(id.equals("123"))
                              {
                                  throw new IOException("customized exception");
                              }
  
                              return "{ \"ok\":\"test ok\" }";
                          }
  
                  }
  
  
                  2.change your advice controller-:
                  package com.ad.blog.controller;
  
                  import java.io.IOException;
                  import java.util.Optional;
  
                  import org.springframework.hateoas.VndErrors;
                  import org.springframework.http.HttpStatus;
                  import org.springframework.http.ResponseEntity;
                  import org.springframework.web.bind.annotation.ExceptionHandler;
                  import org.springframework.web.bind.annotation.RequestMapping;
  
                  @org.springframework.web.bind.annotation.ControllerAdvice
                  @RequestMapping(produces = "application/vnd.error+json")
                  public class ControllerAdvice {
                      @ExceptionHandler(IOException.class) public ResponseEntity < VndErrors > notFoundException(final IOException e) {
                          return error(e, HttpStatus.NOT_FOUND, e.getMessage());
                      }
                      private ResponseEntity < VndErrors > error(final Exception exception, final HttpStatus httpStatus, final String logRef) {
                          final String message = Optional.of(exception.getMessage()).orElse(exception.getClass().getSimpleName());
                          return new ResponseEntity < > (new VndErrors(logRef, message), httpStatus);
                      }
                  }
  
                  3. you need to add hateos dependency in your pom.xml file.
                  <dependency>
                              <groupId>org.springframework.boot</groupId>
                              <artifactId>spring-boot-starter-hateoas</artifactId>
                          </dependency>
  4. @EnableWebMVc annotation is used to enable  MVC Java config that 
                     overrides the DispatcherServlet defaults configuration.if you want to 
                     overrides deafult configuration then creat a class-:
  
      @Configuration
      @EnableWebMvc
      public class WebConfig extends WebMvcConfigurerAdapter {
  
  
      }
  

  回复于 2024-04-19T00:54:36+08:00
• 0

  找到罪魁祸首，在评论下面的代码部分之后，一切都像魅力一样 . 无论如何，谢谢大家！

  public HandlerExceptionResolver handlerExceptionResolver()
  {
      return new HandlerExceptionResolver()
      {
          @Override
          public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler, Exception exception)
          {
              return null;
          }
      };
  }
  

  回复于 2024-04-19T00:54:36+08:00