拦截器的preHandle方法、postHandle方法抛出的异常在ControllerAdvice处理范围内,但拦截器的afterCompletion方法抛出的异常不在处理范围内(拦截器的afterCompletion抛出的异常会被直接catch处理,不会往外抛出异常,只会打印错误日志)。 HandlerExecutionChain类源码 void triggerAfterCompletion(HttpServletRequest request, HttpServletResponse response, @Nullable Exception ex)
throws Exception {
HandlerInterceptor[] interceptors = getInterceptors();
if (!ObjectUtils.isEmpty(interceptors)) {
for (int i = this.interceptorIndex; i >= 0; i--) {
HandlerInterceptor interceptor = interceptors[i];
try {
interceptor.afterCompletion(request, response, this.handler, ex);
}
catch (Throwable ex2) {
logger.error("HandlerInterceptor.afterCompletion threw exception", ex2);
}
}
}
}
过滤器抛出的异常不在ControllerAdvice处理范围内。如果要处理过滤器抛出的异常,可以自定义Filter并放在过滤链的最前面,catch处理异常。
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