001/* 002 * Copyright 2002-2008 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.aop; 018 019/** 020 * Tag interface for throws advice. 021 * 022 * <p>There are not any methods on this interface, as methods are invoked by 023 * reflection. Implementing classes must implement methods of the form: 024 * 025 * <pre class="code">void afterThrowing([Method, args, target], ThrowableSubclass);</pre> 026 * 027 * <p>Some examples of valid methods would be: 028 * 029 * <pre class="code">public void afterThrowing(Exception ex)</pre> 030 * <pre class="code">public void afterThrowing(RemoteException)</pre> 031 * <pre class="code">public void afterThrowing(Method method, Object[] args, Object target, Exception ex)</pre> 032 * <pre class="code">public void afterThrowing(Method method, Object[] args, Object target, ServletException ex)</pre> 033 * 034 * The first three arguments are optional, and only useful if we want further 035 * information about the joinpoint, as in AspectJ <b>after-throwing</b> advice. 036 * 037 * <p><b>Note:</b> If a throws-advice method throws an exception itself, it will 038 * override the original exception (i.e. change the exception thrown to the user). 039 * The overriding exception will typically be a RuntimeException; this is compatible 040 * with any method signature. However, if a throws-advice method throws a checked 041 * exception, it will have to match the declared exceptions of the target method 042 * and is hence to some degree coupled to specific target method signatures. 043 * <b>Do not throw an undeclared checked exception that is incompatible with 044 * the target method's signature!</b> 045 * 046 * @author Rod Johnson 047 * @author Juergen Hoeller 048 * @see AfterReturningAdvice 049 * @see MethodBeforeAdvice 050 */ 051public interface ThrowsAdvice extends AfterAdvice { 052 053}