AOP实现日志拦截

使用Spring AOP实现日志拦截

类实现

package com.base.log;

import org.aopalliance.intercept.Joinpoint;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.aspectj.lang.JoinPoint;
import org.jboss.logging.MDC;

//使用Throw通知类型来实现Advice
public class ExceptionLogHandler{
private Logger logger = Logger.getLogger(this.getClass().getName());

public void doThrowing(JoinPoint jp, Throwable ex) {
String className = jp.getTarget().getClass().getName();
String methodName = jp.getSignature().getName();
MDC.put("className", (Object)className);
MDC.put("methodName", (Object)methodName);
MDC.put("longMsg", (Object)limitStackTrace2String(ex));
logger.log(Level.INFO, getMessage(ex));
}

private String getMessage(Throwable ex){
StringBuffer sb = new StringBuffer();
sb.append(ex.getMessage());
if(ex.getCause() != null){
sb.append(" Caused by:").append(ex.getCause().getMessage());
}
return sb.toString();
}

private String limitStackTrace2String(Throwable ex){
StringBuffer sb = new StringBuffer();
sb.append(ex).append("\n");
StackTraceElement[] st = ex.getStackTrace();
for(int i=0;i<20;i++){
sb.append(" at ").append(st[i]).append("\n");
}
sb.append(" ......").append("\n");
// sb.append(" at ").append(st[0]).append("\n")
// .append(" at ").append(st[1]).append("\n")
// .append(" at ").append(st[2]).append("\n")
// .append(" ......").append("\n");

if(ex.getCause()!=null){
sb.append("Caused by: ").append(ex.getCause()).append("\n");
StackTraceElement[] st2 = ex.getCause().getStackTrace();
for(int i=0;i<5;i++){
sb.append(" at ").append(st2[i]).append("\n");
}
sb.append(" ......").append("\n");
// sb.append(" at ").append(st2[0]).append("\n")
// .append(" at ").append(st2[1]).append("\n")
// .append(" at ").append(st2[2]).append("\n")
// .append(" ......").append("\n");
}
return sb.toString();
}

}

配置实现

<?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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">


<bean id="exceptionLogHandler" class="com.base.log.ExceptionLogHandler" />

<aop:config >
<aop:aspect id="exceptionLogAspect" ref="exceptionLogHandler">







<aop:after-throwing method="doThrowing" pointcut="execution(* com..*Service.*(..))" throwing="ex"/>
</aop:aspect>
</aop:config>
</beans>

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