SpringBoot中默认异常处理机制的实现

@Controller
@RequestMapping("${server.error.path:${spring.mvc.async.request-timeout}}")
public class BasicErrorController extends AbstractErrorController {
    ...
}

{
  "timestamp": "2025-07-12T10:45:00.000+00:00",
  "status": 404,
  "error": "Not Found",
  "path": "/not-found"
}

@Component
public class CustomErrorAttributes extends DefaultErrorAttributes {
    @Override
    public Map<String, Object> getErrorAttributes(WebRequest webRequest, ErrorAttributeOptions options) {
        Map<String, Object> errorMap = super.getErrorAttributes(webRequest, options);
        errorMap.put("customInfo", "This is a custom error info.");
        return errorMap;
    }
}

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

    public CustomErrorController(ErrorAttributes errorAttributes) {
        super(errorAttributes, new ErrorProperties());
    }

    @Override
    public ResponseEntity<Map<String, Object>> error(HttpServletRequest request) {
        Map<String, Object> body = getErrorAttributes(new ServletWebRequest(request), true);
        return new ResponseEntity<>(body, HttpStatus.INTERNAL_SERVER_ERROR);
    }
}

@RestControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler(Exception.class)
    public ResponseEntity<Map<String, Object>> handleException(Exception ex, HttpServletRequest request) {
        Map<String, Object> errorBody = new HashMap<>();
        errorBody.put("error", ex.getMessage());
        errorBody.put("path", request.getRequestURI());
        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(errorBody);
    }
}

spring:
  mvc:
    async:
      request-timeout: 0 # 禁用超时控制
server:
  error:
    path: /my-error     # 自定义错误路径
    whitelabel:
      enabled: false    # 关闭默认白标错误页