Java tutorial
/* * Copyright 2007 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.chnoumis.commons.log; import java.lang.reflect.Method; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.aop.AfterReturningAdvice; import org.springframework.aop.MethodBeforeAdvice; import org.springframework.aop.ThrowsAdvice; public class LogInterceptor implements MethodBeforeAdvice, AfterReturningAdvice, ThrowsAdvice { private static Log log = null; public LogInterceptor() { } public void before(Method arg0, Object[] arg1, Object arg2) throws Throwable { log = LogFactory.getLog(arg2.getClass()); log.info("Beginning method: " + arg0.getName()); } public void afterReturning(Object arg0, Method arg1, Object[] arg2, Object arg3) throws Throwable { log = LogFactory.getLog(arg3.getClass()); log.info("Ending method: " + arg1.getName()); } public void afterThrowing(Method m, Object[] args, Object target, Throwable ex) { log = LogFactory.getLog(target.getClass()); log.info("Exception in method: " + m.getName() + " Exception is: " + ex.getMessage()); } }