package com.ctrip.framework.apollo.common.controller;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;
import com.ctrip.framework.apollo.common.exception.AbstractApolloHttpException;
import com.ctrip.framework.apollo.tracer.Tracer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.web.HttpMediaTypeException;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.client.HttpStatusCodeException;
import java.lang.reflect.Type;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import static org.springframework.http.HttpStatus.BAD_REQUEST;
import static org.springframework.http.HttpStatus.FORBIDDEN;
import static org.springframework.http.HttpStatus.INTERNAL_SERVER_ERROR;
import static org.springframework.http.MediaType.APPLICATION_JSON;
@ControllerAdvice
public class GlobalDefaultExceptionHandler {
private Gson gson = new Gson();
private static Type mapType = new TypeToken<Map<String, Object>>() {
}.getType();
private static final Logger logger = LoggerFactory.getLogger(GlobalDefaultExceptionHandler.class);
//处理系统内置的Exception
@ExceptionHandler(Throwable.class)
public ResponseEntity<Map<String, Object>> exception(HttpServletRequest request, Throwable ex) {
return handleError(request, INTERNAL_SERVER_ERROR, ex);
}
@ExceptionHandler({HttpRequestMethodNotSupportedException.class, HttpMediaTypeException.class})
public ResponseEntity<Map<String, Object>> badRequest(HttpServletRequest request,
ServletException ex) {
return handleError(request, BAD_REQUEST, ex);
}
@ExceptionHandler(HttpStatusCodeException.class)
public ResponseEntity<Map<String, Object>> restTemplateException(HttpServletRequest request,
HttpStatusCodeException ex) {
return handleError(request, ex.getStatusCode(), ex);
}
@ExceptionHandler(AccessDeniedException.class)
public ResponseEntity<Map<String, Object>> accessDeny(HttpServletRequest request,
AccessDeniedException ex) {
return handleError(request, FORBIDDEN, ex);
}
//处理自定义Exception
@ExceptionHandler({AbstractApolloHttpException.class})
public ResponseEntity<Map<String, Object>> badRequest(HttpServletRequest request, AbstractApolloHttpException ex) {
return handleError(request, ex);
}
private ResponseEntity<Map<String, Object>> handleError(HttpServletRequest request,
AbstractApolloHttpException ex) {
return handleError(request, ex.getHttpStatus(), ex);
}
private ResponseEntity<Map<String, Object>> handleError(HttpServletRequest request,
HttpStatus status, Throwable ex) {
String message = ex.getMessage();
logger.error(message, ex);
Tracer.logError(ex);
Map<String, Object> errorAttributes = new HashMap<>();
boolean errorHandled = false;
if (ex instanceof HttpStatusCodeException) {
try {
//try to extract the original error info if it is thrown from apollo programs, e.g. admin service
errorAttributes = gson.fromJson(((HttpStatusCodeException) ex).getResponseBodyAsString(), mapType);
status = ((HttpStatusCodeException) ex).getStatusCode();
errorHandled = true;
} catch (Throwable th) {
//ignore
}
}
if (!errorHandled) {
errorAttributes.put("status", status.value());
errorAttributes.put("message", message);
errorAttributes.put("timestamp",
LocalDateTime.now().format(DateTimeFormatter.ISO_LOCAL_DATE_TIME));
errorAttributes.put("exception", ex.getClass().getName());
}
HttpHeaders headers = new HttpHeaders();
headers.setContentType(APPLICATION_JSON);
return new ResponseEntity<>(errorAttributes, headers, status);
}
}