Spring是否有更简单的异常处理技术? [英] Is there a simpler exception handling technique for Spring?
问题描述
我已经了解了使用@ExceptionHandler的基于控制器的异常.
I have read about controller based exceptions using @ExceptionHandler.
我已经阅读了有关使用@ControllerAdvice进行全局异常处理的信息.
I have read about global exception handling using @ControllerAdvice.
我还阅读了有关扩展HandlerExceptionResolver的信息,以进行更深入的异常处理.
I have also read about extending HandlerExceptionResolver for more in-depth exception handling.
但是,我理想地希望做的是能够在应用程序的任何层上抛出一个全局异常,该异常具有指示返回给客户端的JSON响应的参数.
However, what I would ideally like to do is be able to throw a global exception with parameters that dictate a JSON response returned to the client, at any layer in my application.
例如:
throw new CustomGlobalException(HttpStatus.UNAUTHORISED, "This JWT Token is not Authorised.")
throw new CustomGlobalException(HttpStatus.FORBIDDEN, "This JWT Token is not valid.")
然后,这将基于我创建的模型以及状态(例如:
This would then return a JSON response based on the model I've created, along with the status, such as :
{
"success" : "false",
"message" : "This JWT Token is not Authorised."
}
,并将其作为我的控制器的REST响应返回. 这样的事情可能吗?还是我必须按照文档中所述对所有内容进行自定义错误异常处理.
And for this to be returned as a REST response from my controller. Is something like this possible? Or Do I have to go through the process of making custom error exceptions for everything as described in the documentation.
为澄清起见,我需要异常来中断正在进行的进程,也许是从数据库中获取数据,然后立即将给定的异常返回给客户端.我有一个Web MVC设置.
To clarify, I require the exception to interrupt whatever the ongoing process is, perhaps fetching data from the database, and immediately return the given exception to the client. I have a web mvc setup.
更多详细信息:
@ControllerAdvice
@RequestMapping(produces = "application/json")
public class GlobalExceptionHandler {
@ExceptionHandler(CustomException.class)
public ResponseEntity<Object> handleCustomException(CustomException ex,
WebRequest request) {
Map<String, Object> response = new HashMap<>();
response.put("message", ex.getMessage());
return new ResponseEntity<>(response, ex.getCode());
}
}
在这里抛出异常:
@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain
filterChain) throws ServletException, IOException {
logger.debug("Filtering request for JWT header verification");
try {
String jwt = getJwtFromRequest(request);
logger.debug("JWT Value: {}", jwt);
if (StringUtils.hasText(jwt) && tokenProvider.validateToken(jwt)) {
String username = tokenProvider.getUserIdFromJWT(jwt);
UserDetails userDetails = customUserDetailsService.loadUserByUsername(username);
UsernamePasswordAuthenticationToken authentication = new UsernamePasswordAuthenticationToken
(userDetails, null, userDetails.getAuthorities());
authentication.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
SecurityContextHolder.getContext().setAuthentication(authentication);
} else {
logger.error("No Valid JWT Token Provided");
throw new CustomException(HttpStatus.UNAUTHORIZED, "No Valid JWT Token Provided");
}
} catch (Exception ex) {
logger.error("Could not set user authentication in security context", ex);
}
filterChain.doFilter(request, response);
}
推荐答案
Following my post on how to handle exception here, you can write your own handler something like this,
class CustomGlobalException {
String message;
HttpStatus status;
}
@ExceptionHandler(CustomGlobalException.class)
public ResponseEntity<Object> handleCustomException(CustomGlobalException ex,
WebRequest request) {
Map<String, Object> response = new HashMap<>();
response.put("success", "false");
response.put("message", ex.getMessage());
return new ResponseEntity<>(response, ex.getStatus());
}
上面提到的
上面的代码将处理发生在任何代码层的 CustomGlobalException .
这篇关于Spring是否有更简单的异常处理技术?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!