spring aop注解配置web日志

下面是配置文件aop-servlet.xml，使用的版本是spring3.1

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beans       http://www.springframework.org/schema/beans/spring-beans-3.1.xsd       http://www.springframework.org/schema/aop       http://www.springframework.org/schema/aop/spring-aop-3.1.xsd       http://www.springframework.org/schema/tx       http://www.springframework.org/schema/tx/spring-tx-3.1.xsd      "><aop:aspectj-autoproxy /><bean id="logAdvice" class="com.cloudData.aop.LogAdvice"></bean></beans>

下面是LogAdvice.java

package com.cloudData.aop;import org.aspectj.lang.JoinPoint;import org.aspectj.lang.annotation.After;import org.aspectj.lang.annotation.AfterThrowing;import org.aspectj.lang.annotation.Aspect;import org.aspectj.lang.annotation.Before;import org.aspectj.lang.annotation.Pointcut;/** * @author LiuKe * @version 1.0 2013-10-21 * @show 日志切面 */@Aspectpublic class LogAdvice{@Pointcut("execution(* *.handleRequest(..))")public void log(){}@Before("log()")public void LogRequest(JoinPoint joinPoint){Object obj[] = joinPoint.getArgs();  for(Object o :obj){   System.out.println("----------------"+o+"----------------");  }//  System.out.println("========checkSecurity=="+joinPoint.getSignature().getName());//这个是获得方法名//System.out.println("记录了一个请求");}@After("log()")public void LogResponse(JoinPoint joinPoint){}@AfterThrowing("log()")public void LogThrowing(JoinPoint joinPoint){}}

@Pointcut("execution(* *.handleRequest(..))")public void log(){}

指明了log()方法代表的切点，可以理解为log()方法是一个钩子，他的方法体为空即可，它钩到@Pointcut定义的切点方法，在后面的@Before等配置中，直接配置“log()”即可

@Before("log()")，@After("log()")，@AfterThrowing("log()")分别表示在* *.handleRequest(..)之前调用，* *.handleRequest(..)之后调用，

* *.handleRequest(..)抛出异常调用。

JoinPoint代表切点，joinpoint实例中可以获取切点方法的方法名，参数等信息。

最后，在LogRequest(JoingPoint joinPoint)等方法中,添加日志代码即可。

下面贴出几种常用的记录日志的方法，可自行选择一种加入到LogRequest LogResponse 或LogThrowing中，下面提供的几种记录日志方法的区别，读者可自己测试体会

Log4jTest.java

package com.test.log4jtest;import java.io.FileOutputStream;import org.apache.log4j.ConsoleAppender;import org.apache.log4j.FileAppender;import org.apache.log4j.HTMLLayout;import org.apache.log4j.Level;import org.apache.log4j.Logger;import org.apache.log4j.PatternLayout;import org.apache.log4j.SimpleLayout;import org.apache.log4j.WriterAppender;public class Log4jTest {static Logger logger = Logger.getLogger(Log4jTest.class);public static void main(String args[]) {//output1();//SimpleLayout和 FileAppender//output2();//HTMLLayout和 WriterAppenderoutput3();//PatternLayout和 ConsoleAppender}public static void output1(){SimpleLayout layout = new SimpleLayout();FileAppender appender = null;try {appender = new FileAppender(layout,"output1.txt",false);} catch(Exception e) {}logger.addAppender(appender);logger.setLevel((Level) Level.DEBUG);logger.debug("Here is some DEBUG");logger.info("Here is some INFO");logger.warn("Here is some WARN");logger.error("Here is some ERROR");logger.fatal("Here is some FATAL");}public static void output2(){HTMLLayout layout = new HTMLLayout();WriterAppender appender = null;try {FileOutputStream output = new FileOutputStream("output2.html");appender = new WriterAppender(layout,output);} catch(Exception e) {}logger.addAppender(appender);logger.setLevel((Level) Level.DEBUG);logger.debug("Here is some DEBUG");logger.info("Here is some INFO");logger.warn("Here is some WARN");logger.error("Here is some ERROR");logger.fatal("Here is some FATAL");}public static void output3(){// Note, %n is newlineString pattern = "Milliseconds since program start: %r %n";pattern += "Classname of caller: %C %n";pattern += "Date in ISO8601 format: %d{ISO8601} %n";pattern += "Location of log event: %l %n";pattern += "Message: %m %n %n";PatternLayout layout = new PatternLayout(pattern);ConsoleAppender appender = new ConsoleAppender(layout);logger.addAppender(appender);logger.setLevel((Level) Level.DEBUG);logger.debug("Here is some DEBUG");logger.info("Here is some INFO");logger.warn("Here is some WARN");logger.error("Here is some ERROR");logger.fatal("Here is some FATAL");}}