項目使用RPC提供的內部服務,需要監控每個接口方法的調用情況以及響應時間,如果接口方法開始和結束時都計時並將兩個時間相減得到響應時間,勢必對代碼的入侵太大。使用AOP剛好能很優雅的解決這個問題!
1.log4j的配置log4j.xml。這裏使用xml風格的配置
<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的配置參見:http://stonexmx.blog.163.com/blog/static/1221585872009716112428738/
PatternLayout輸出格式參見: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}-類名,如果使用%C將輸出類的全路徑名,%M-方法名
輸出類似以下內容:
2.MethodTimeAdvice.java 用來記錄時間
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 計時
StopWatch clock = new StopWatch();
clock.start(); // 計時開始
Object result = invocation.proceed();
clock.stop(); // 計時結束
// 方法參數類型,轉換成簡單類型
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 的語法定義 Pointcut,這裏攔截 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相關包,比較容易遺漏的: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相關的dtd的引入,還要注意pointcut="execution(* yourpackage.service.impl..*.*(..))" 的配置語法
6.最後在info.log裏面可以看到如上圖的輸出,最後再用shell統計即可。
http://jportal.iteye.com/blog/945725
http://www.java63.com/spring/configure_implement_aop.html
因爲對spring的aop不是很熟,在實現上有細節問題,在此記錄下!