Spring:如何让过滤器抛出自定义异常?
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【中文标题】Spring:如何让过滤器抛出自定义异常?【英文标题】:Spring: How to make a filter throw a custom exception? 【发布时间】:2017-10-17 20:26:33 【问题描述】:我创建了一个过滤器,用于验证 JWT 令牌的每个请求标头:
public class JWTAuthenticationFilter extends GenericFilterBean
private UserDetailsService customUserDetailsService;
private static Logger logger = LoggerFactory.getLogger(JWTAuthenticationFilter.class);
private final static UrlPathHelper urlPathHelper = new UrlPathHelper();
public JWTAuthenticationFilter(UserDetailsService customUserDetailsService)
this.customUserDetailsService = customUserDetailsService;
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain) throws IOException, ServletException
Authentication authentication = AuthenticationService.getAuthentication((HttpServletRequest) request, customUserDetailsService);
SecurityContextHolder.getContext().setAuthentication(authentication);
if (authentication == null)
logger.debug("failed authentication while attempting to access " + urlPathHelper.getPathWithinApplication((HttpServletRequest) request));
filterChain.doFilter(request, response);
我想抛出一个自定义异常,该异常返回响应:
@ResponseStatus(value=HttpStatus.SOMECODE, reason="There was an issue with the provided authentacion information") // 409
public class CustomAuthenticationException extends RuntimeException
private static final long serialVersionUID = 6699623945573914987L;
我应该怎么做?捕获过滤器抛出的此类异常的最佳设计是什么? 是否有任何一种由 Spring 安全提供的异常处理机制,我可以使用并一次性捕获所有内容? 有没有其他方法可以在过滤器中抛出自定义异常?
注意:还有另一个问题here,其接受的答案没有回答我的问题。我想在到达任何控制器之前返回响应。
我要处理的错误情况: 1. 客户端为 Authorization 标头发送一个空值。 2. 客户端发送格式错误的令牌
在这两种情况下,我都会收到带有500
HTTP 状态代码的响应。我想找回4XX
代码。
【问题讨论】:
我猜你没有把我的问题读到最后。在最后一段中,我明确给出了该帖子的链接,并说明了为什么该问题有所不同。 但是应该是AuthenticationException
来执行失败处理。我在我的问题中添加了一些示例案例。
您可以通过添加自定义成功和失败处理程序来做到这一点,并从 AbstractAuthenticationProcessingFilter 扩展您的自定义过滤器
@ArianHosseinzadeh 在您的情况下可以抛出哪种类型的异常?
IllegalArgumentException
, MalformedJwtException
, SignatureException
是一些例子。
【参考方案1】:
看看@ControllerAdvice
这是我项目中的一个示例。
@ControllerAdvice
@RestController
public class GlobalExceptionHandler
private final Logger log = Logger.getLogger(this.getClass().getSimpleName());
@ResponseStatus(HttpStatus.BAD_REQUEST)
@ExceptionHandler(value = RuntimeException.class)
public Response handleBaseException(RuntimeException e)
log.error("Error", e);
Error error = new Error(HttpStatus.BAD_REQUEST.value(), HttpStatus.BAD_REQUEST.name());
return Response.status(HttpStatus.BAD_REQUEST.value()).error(error, null).build();
@ResponseStatus(HttpStatus.NOT_FOUND)
@ExceptionHandler(value = NoHandlerFoundException.class)
public Response handleNoHandlerFoundException(Exception e)
log.error("Error", e);
Error error = new Error(HttpStatus.NOT_FOUND.value(), HttpStatus.NOT_FOUND.name());
return Response.status(HttpStatus.NOT_FOUND.value()).error(error, null).build();
@ExceptionHandler(value = AuthenticationCredentialsNotFoundException.class)
public Response handleException(AuthenticationCredentialsNotFoundException e)
log.error("Error", e);
Error error = new Error(ErrorCodes.INVALID_CREDENTIALS_CODE, ErrorCodes.INVALID_CREDENTIALS_MSG);
return Response.status(ErrorCodes.INVALID_CREDENTIALS_CODE).error(error, null).build();
@ResponseStatus(HttpStatus.UNAUTHORIZED)
@ExceptionHandler(value = UnauthorisedException.class)
public Response handleNotAuthorizedExceptionException(UnauthorisedException e)
// log.error("Error", e);
return Response.unauthorized().build();
@ExceptionHandler(value = Exception.class)
public String handleException(Exception e)
log.error("Error", e);
return e.getClass().getName() + " 14" + e.getMessage();
编辑
相信你可以在response.sendError里面做Filter方法。
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain) throws IOException, ServletException
Authentication authentication = AuthenticationService.getAuthentication((HttpServletRequest) request, customUserDetailsService);
SecurityContextHolder.getContext().setAuthentication(authentication);
if (authentication == null)
logger.debug("failed authentication while attempting to access " + urlPathHelper.getPathWithinApplication((HttpServletRequest) request));
response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Invalid authentication.");
setUnauthorizedResponse(response);
return;
filterChain.doFilter(request, response);
public void setUnauthorizedResponse(HttpServletResponse response)
response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
response.setContentType("application/json");
Response unAuthorizedResponse = Response.unauthorized().build();
try
PrintWriter out = response.getWriter();
out.println(unAuthorizedResponse.toJsonString());
catch (IOException e)
log.error("Error", e);
【讨论】:
控制器通知只能处理控制器和服务抛出的异常 我编辑了我的问题并添加了两个示例案例。例如MalformedJwtException
和 IllegalArgumentException
,其中 JWT 字符串为空。我不能为IllegalArgumentException
提供全局异常处理程序。这种异常并不总是认证案例。它可能与其他错误有关。
谢谢你的回答,我会把EDIT移到最上面,打电话Response.unauthorized()
时我也会得到The method unauthorized() is undefined
响应是自己的类自定义类。您可以使用自己的。【参考方案2】:
我在使用 JWT 令牌时遇到了同样的问题,并在 question 上发布了解决方案,因为那里的问题类似(他遇到了过滤器异常问题)
【讨论】:
【参考方案3】:免责声明:这不是对所提出问题的回答,而是对 Arian 所问问题的后续回答。
如上所述,请查看如何在 spring 容器允许我们访问 bean 之前启动的地方自动装配。
我在这里自动装配我的 BlacklistJwtRepo
if (blacklistJwtRepo == null) //Lazy Load because filter
ServletContext servletContext = req.getServletContext();
WebApplicationContext webApplicationContext = WebApplicationContextUtils.getWebApplicationContext(servletContext);
blacklistJwtRepo = webApplicationContext.getBean(BlacklistJwtRepo.class);
这是我获取 req 对象的地方 -
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException
HttpServletRequest req = (HttpServletRequest) request;
最终代码看起来像 -
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException
HttpServletRequest req = (HttpServletRequest) request;
System.out.println("blacklistJwtRepo : " + blacklistJwtRepo);
//till here the autowired repo (blacklistJwtRepo) is null
if (blacklistJwtRepo == null) //Lazy Load because filter
ServletContext servletContext = req.getServletContext();
WebApplicationContext webApplicationContext = WebApplicationContextUtils.getWebApplicationContext(servletContext);
blacklistJwtRepo = webApplicationContext.getBean(BlacklistJwtRepo.class);
【讨论】:
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