@Controller
@RequestMapping({"${server.error.path:${error.path:/error}}"})
public class BasicErrorController extends AbstractErrorController {

 	/**
 	 * 錯(cuò)誤的頁面響應(yīng) 
 	 */
 @RequestMapping(produces = {"text/html"})
 public ModelAndView errorHtml(HttpServletRequest request, HttpServletResponse response) {
 HttpStatus status = this.getStatus(request);
 Map<String, Object> model = Collections.unmodifiableMap(this.getErrorAttributes(request, this.isIncludeStackTrace(request, MediaType.TEXT_HTML)));
 response.setStatus(status.value());
 	// 得到一個(gè)modelAndView對象
 ModelAndView modelAndView = this.resolveErrorView(request, response, status, model);
 return modelAndView != null ? modelAndView : new ModelAndView("error", model);
 }
		
 /**
 * 錯(cuò)誤的json響應(yīng)
 */
 @RequestMapping
 public ResponseEntity<Map<String, Object>> error(HttpServletRequest request) {
 HttpStatus status = this.getStatus(request);
 if (status == HttpStatus.NO_CONTENT) {
  return new ResponseEntity(status);
 } else {
  Map<String, Object> body = this.getErrorAttributes(request, this.isIncludeStackTrace(request, MediaType.ALL));
  return new ResponseEntity(body, status);
 }
 }

@RequestMapping("haserror")
@ResponseBody
public Object myError(){
 int i =10/0;
 return "something is error";
}
這是一個(gè)錯(cuò)誤頁面：
<ul>
 <li>錯(cuò)誤狀態(tài)碼：[[${status}]]</li>
 <li>錯(cuò)誤消息：[[${error}]]</li>
 <li>異常對象：[[${exception}]]</li>
 <li>異常消息：[[${message}]]</li>
 <li>當(dāng)前時(shí)間：[[${timestamp}]]</li>
</ul>

{
"timestamp": "2020-04-22T16:13:37.506+0000",
"status": 500,
"error": "Internal Server Error",
"message": "/ by zero",
"path": "/hello/haserror",
"reason": "完了，你寫的代碼又產(chǎn)生了一次線上事故"
}

@Component
public class MyErrorAttributes extends DefaultErrorAttributes {
 @Override
 public Map<String, Object> getErrorAttributes(WebRequest webRequest, boolean includeStackTrace) {
 //調(diào)用父類的方法，會(huì)自動(dòng)獲取內(nèi)置的那些屬性，如果你不想要，可以不調(diào)用這個(gè)
 Map<String, Object> errorAttributes = super.getErrorAttributes(webRequest, includeStackTrace);

 //添加自定義的屬性
 errorAttributes.put("reason","完了，你寫的代碼又產(chǎn)生了一次線上事故");
 // 你可以看一下這個(gè)方法的參數(shù)webRequest這個(gè)對象，我相信你肯定能發(fā)現(xiàn)好東西

 return errorAttributes;
 }
}

@ControllerAdvice
public class ErrroAcvice {

 /**
 * 全局捕獲異常的切面類
 * @param request 請求對象，可不傳
 * @param response 響應(yīng)對象，可不傳
 * @param e 異常類(這個(gè)要和你當(dāng)前捕獲的異常類是同一個(gè))
 */
 @ExceptionHandler(Exception.class) //也可以只對一個(gè)類進(jìn)行捕獲
 public void errorHandler(HttpServletRequest request, HttpServletResponse response,Exception e){
 	/*
 	 * You can do everything you want to do
  * 這里你拿到了request和response對象，你可以做任何你想做的事
  * 比如：
  *	1.用request從頭信息中拿到Accept來判斷是請求方可接收的類型從而進(jìn)行第一個(gè)方法的判斷
  *	2.如果你也想返回一個(gè)頁面，使用response對象進(jìn)行重定向到自己的錯(cuò)誤頁面就可以了
  * 3.你甚至還拿到了異常對象
 	 */
 
 String accept = request.getHeader("Accept");
				// 根據(jù)這個(gè)字符串來判斷做出什么響應(yīng)	
 
 try {
  response.setStatus(500);
  response.getWriter().write("hello");
 } catch (IOException ex) {
  ex.printStackTrace();
 }
 
 }
}