项目使用RPC提供的内部服务,需要监控每个接口方法的调用情况以及响应时间,如果接口方法开始和结束时都计时并将两个时间相减得到响应时间,势必对代码的入侵太大。使用AOP刚好能很优雅的解决这个问题!
1.log4j的配置log4j.xml。这里使用xml风格的配置
<appender name="info-out" class="org.apache.log4j.DailyRollingFileAppender"> <param name="File" value="/data/logs/hiluo-service/info.log" /> <param name="DatePattern" value="'.'yyyy-MM-dd'.log'" /> <layout class="org.apache.log4j.PatternLayout"> <param name="ConversionPattern" value="%d{yyyy.MM.dd HH:mm:ss} [%C{1}:%M] %m%n" /> </layout> <filter class="org.apache.log4j.varia.LevelRangeFilter"> <param name="LevelMax" value="info" /> <param name="LevelMin" value="info" /> <param name="AcceptOnMatch" value="true" /> </filter> </appender>
log4j的配置参见:http://stonexmx.blog.163.com/blog/static/1221585872009716112428738/
PatternLayout输出格式参见:http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/PatternLayout.html
value="%d{yyyy.MM.dd HH:mm:ss} [%C{1}:%M] %m%n",%C{1}-类名,如果使用%C将输出类的全路径名,%M-方法名
输出类似以下内容:
2.MethodTimeAdvice.java 用来记录时间
package yourpackage.utils; import org.aopalliance.intercept.MethodInterceptor; import org.aopalliance.intercept.MethodInvocation; import org.apache.commons.lang.StringUtils; import org.apache.commons.lang.time.StopWatch; import org.slf4j.Logger; import org.slf4j.LoggerFactory; public class MethodTimeAdvice implements MethodInterceptor { private static final Logger Log = LoggerFactory .getLogger(MethodTimeAdvice.class); @Override public Object invoke(MethodInvocation invocation) throws Throwable { // 用 commons-lang 提供的 StopWatch 计时 StopWatch clock = new StopWatch(); clock.start(); // 计时开始 Object result = invocation.proceed(); clock.stop(); // 计时结束 // 方法参数类型,转换成简单类型 Class[] params = invocation.getMethod().getParameterTypes(); String[] simpleParams = new String[params.length]; for (int i = 0; i < params.length; i++) { simpleParams[i] = params[i].getSimpleName(); } Object[] args = invocation.getArguments(); Log.info("Takes:" + clock.getTime() + " ms [" + invocation.getThis().getClass().getName() + "." + invocation.getMethod().getName() + "(" + StringUtils.join(simpleParams, ",") + ")(" + StringUtils.join(args, ",") + ")] "); return result; } }
3.applicationContext.xml
<?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:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd" default-lazy-init="true"> <aop:aspectj-autoproxy /> <bean id="methodTimeAdvice" class="cn.hiluo.openfire.utils.MethodTimeAdvice" /> <aop:config> <!-- 用 AspectJ 的语法定义 Pointcut,这里拦截 service 包中的所有方法 --> <aop:advisor id="methodTimeLog" advice-ref="methodTimeAdvice" pointcut="execution(* yourpackage.service.impl..*.*(..))" /> </aop:config> <bean id="yourservice" class="**.impl.yourServiceImpl"> </bean> 。。。。。yourbeans </beans>
4.注意需要加入Spring相关包,比较容易遗漏的:org.springframework.aop-3.0.6.RELEASE.jar,org.springframework.aspects-3.0.6.RELEASE.jar,aspectjweaver-1.5.3.jar,aopalliance-1.0.jar
5.applicationContext.xml注意xml中和AOP相关的dtd的引入,还要注意pointcut="execution(* yourpackage.service.impl..*.*(..))" 的配置语法
6.最后在info.log里面可以看到如上图的输出,最后再用shell统计即可。
http://jportal.iteye.com/blog/945725
http://www.java63.com/spring/configure_implement_aop.html
因为对spring的aop不是很熟,在实现上有细节问题,在此记录下!