perf4j @Profiled注释不起作用

Question

我已经通过perf4J网站的以下链接,并做了同样的事情:http://perf4j.codehaus.org/devguide.html#Using_Spring_AOP_to_Integrate_Timing_Aspects

在我的spring.xml中添加了以下内容.

<aop:aspectj-autoproxy/>
<bean id="timingAspect" class="org.perf4j.log4j.aop.TimingAspect"/>
<bean id="wscClientBase" class="com.xyz.csa.core.common.WscClientBase"/>

在类WscClientBase中,我使用@Profiled注释的以下方法.

@Profiled(tag = "SOAPCALLTEST")
public Object sendMessage(Object message) {
    String msg = message.toString();
    if (msg.indexOf(' ') > 1) {
        msg = msg.substring(1, msg.indexOf(' '));
    }
    try {
        Object ret = marshalSendAndReceive(message);
        return ret;
    } catch (RuntimeException ex) {
        throw ex;
    }
}

我没有在应用程序日志中看到perf4j TimingLogger语句.但是,如果我使用它(如下没有注释),我会成功地看到日志语句.

public Object sendMessage(Object message) {
    String msg = message.toString();
    if (msg.indexOf(' ') > 1) {
        msg = msg.substring(1, msg.indexOf(' '));
    }
    StopWatch stopWatch = new Slf4JStopWatch();
    try {
        Object ret = marshalSendAndReceive(message);
        stopWatch.stop("PERF_SUCCESS_TAG", msg);
        return ret;
    } catch (RuntimeException ex) {
        stopWatch.stop("PERF_FAILURE_TAG", msg);
        throw ex;
    }
}

我错过了什么吗？

Answer 1

Perf4j 这是一个用于应用程序的性能分析和检查插件.它可以使用弹簧AOP与弹簧集成.它创建一个日志文件,供分析人员分析和生成相关信息.默认情况下,它可以提供平均值,平均值,标准偏差.有关更多一般信息,请访问http://perf4j.codehaus.org/index.html

如何设置Perf4j.对于正常设置,您只需添加perf4j jar并为要监视的每个代码片段创建StopWatch实例.

StopWatch stopWatch= new StopWatch(“snipletTagName”)
…
//{your code sniplet}
…
stopwatch.stop();

这将创建perf4j监视器,您将在控制台上获取logg信息.

本文档的主要目的是通过设置理解将perf4j与弹簧集成进行设置.

1.添加所有Jar文件.

 1. perf4j-0.9.16-slf4jonly.jar
    2.aspectjweaver-1.6.12.jar
    3.aopalliance-1.0.jar
    4.commons-logging-1.1.1.jar
    5.logback-classic-1.0.7.jar
    6.logback-core-1.0.7.jar
    7.slf4j-api-1.7.1.jar
    8.perf4j-0.9.16.jar
    9.aspectjrt-1.6.1.jar
    10.commons-jexl-1.1.jar
    11.asm-1.5.3.jar
    12.cglib-2.1_3.jar

确保你的类路径中有所有这个jar和spring库.2.创建自己的logback.xml,perf4j将隐式使用logback.xml的内容

<configuration>

    <appender name="CoalescingStatistics"
        class="org.perf4j.logback.AsyncCoalescingStatisticsAppender">
        <param name="TimeSlice" value="1" />        
        <appender-ref ref="perf4jFileAppender" />       
    </appender>

    <appender name="RootConsoleAppender" class="ch.qos.logback.core.ConsoleAppender">
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>debug</level>
        </filter>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <pattern>%date %-5level [%thread] %logger{36} [%file:%line] %msg%n
            </pattern>
        </layout>
    </appender>

    <appender name="perf4jFileAppender"
        class="ch.qos.logback.core.rolling.RollingFileAppender">
        <File>logs/perf4j.log</File>
        <encoder>
            <Pattern>%date %-5level [%thread] %logger{36} [%file:%line] %msg%n
            </Pattern>
        </encoder>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>logs/perf4j.%d{yyyy-MM-dd}.log</FileNamePattern>
        </rollingPolicy>
    </appender>

    <!-- Loggers -->
    <!-- The Perf4J logger. Note that org.perf4j.TimingLogger is the value of 
        the org.perf4j.StopWatch.DEFAULT_LOGGER_NAME constant. Also, note that additivity 
        is set to false, which is usually what is desired - this means that timing 
        statements will only be sent to this logger and NOT to upstream loggers. -->
    <logger name="org.perf4j.TimingLogger" additivity="false">
        <level value="DEBUG" />
        <appender-ref ref="CoalescingStatistics" />
        <appender-ref ref="perf4jFileAppender" />
        <appender-ref ref="RootConsoleAppender" />
    </logger>
</configuration>

3.在弹簧配置文件中,您需要添加aspectj标签,以启用perf4j的@Profiled注释.

**>(注意:什么是@Profiled注释？:你将这个标签添加到所有的

从spring实例调用的所有类中的方法或使用依赖项注入.该对象基本上应该是注册的spring上下文,并且该方法应该由在spring上下文中注册的对象调用.有一天我浪费时间思考为什么我的方法没有被记录,然后我意识到我测试的对象不是弹簧环境的一部分.**

OK the code that you need to add to spring configuration xml is.

<!-- this is my spring-context.xml -->
<beans>
….
    <aop:aspectj-autoproxy>
        <aop:include name="timingAspect" />
    </aop:aspectj-autoproxy>

    <bean id="timingAspect" class="org.perf4j.slf4j.aop.TimingAspect" />

<!-- this is the class that will be registered with the spring and now we can get this class and call the method that we need to monitor-->
    <bean class="com.perf4jexample.Test" />
….
</beans>

4.创建将实现@Profiled注释的Test类.

public class Test {

    private String testVal;

    public Test() {
        // TODO Auto-generated constructor stub
    }

    @Profiled
    public void testing() {
        System.out.println("testt" );
    }

    public String getTestVal() {
        return testVal;
    }

    public void setTestVal(String testVal) {
        this.testVal = testVal;
    }
}

5.Ok现在你已经设置了所有东西,只剩下的是测试类,它将启动spring上下文并加载perf4j.

public class Test(){

public static void main(){
        AbstractApplicationContext context = new ClassPathXmlApplicationContext(
                "spring-context.xml");

        context.start();

        Test bean = context.getBean(Test.class);
        bean.testing();
}

我希望通过遵循这个设置你应该能够在控制台上显示一行控制台aplder.

日志上的Perf4j Monitoring命令用于生成性能统计信息在您的记录器路径上执行java -jar perf4j-0.9.16.jar myLogger.log

对于生成图形java -jar perf4j-0.9.16.jar --graph perfGraphs.out myLogger.log

我希望本教程可以帮助您集成Spring,perf4j,使用Profiled注释进行logback.