• Spring AOP 记录日志


       去年的时候由于业务量快速上升,导致我们提供的很多接口或者第三方的接口都出现性能问题,请求处理时间都特别长,为了能够快速检查出哪些接口或者业务方法响应时间特别长,PM让我们记录下每个接口或方法的处理时长。就一句MMP,要在每个方法之前之后都加上当前时间然后在相减?特么的想想都要死人了,这特么没法工作了。但是在程序员的思维里是:重复的东西我们要让程序去做,我们负责实现这个程序。

    好了,废话不说。

    框架:Maven+Spring

    一、通过XML配置实现AOP 记录方法执行时间

       1、引入jar

         <!-- AOP JAR -->
            <dependency>
                <groupId>org.aspectj</groupId>
                <artifactId>aspectjweaver</artifactId>
                <version>1.8.9</version>
            </dependency>
            <!-- Spring JAR -->
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-aop</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <!-- 测试使用的JAR -->
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-test</artifactId>
                <version>${spring.version}</version>
                <scope>provided</scope>
            </dependency>
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>4.12</version>
                <!-- 表示开发的时候引入,发布的时候不会加载此包 -->
                <scope>test</scope>
            </dependency>

        

       2、编写通知类

    package com.ssm.interf;

    import
    org.aopalliance.intercept.MethodInterceptor; import org.aopalliance.intercept.MethodInvocation; import org.springframework.util.StopWatch; import org.springframework.util.StringUtils; public class MethodTimeAdvice implements MethodInterceptor { @Override public Object invoke(MethodInvocation invocation) throws Throwable { 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(); } System.out.println("Takes:" + clock.getTotalTimeMillis() + " ms [" + invocation.getThis().getClass().getName() + "." + invocation.getMethod().getName() + "(" + StringUtils.arrayToDelimitedString(simpleParams, ",") + ")]"); return result; } }

     StopWatch 是Spring 提供的一个计时类。

      3、spring的xml配置

    <?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:context="http://www.springframework.org/schema/context"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
        <context:component-scan base-package="com.ssm" />
        <!-- 日志时间打印 -->
        <aop:config>
            <aop:pointcut id="runTimePc" expression="execution(* com.ssm.service.impl.*.*(..))" />
            <!-- Spring 2.0 可以用 AspectJ 的语法定义 Pointcut,这里拦截 service 包中的所有方法 -->
            <aop:advisor advice-ref="methodTimeAdvice" pointcut-ref="runTimePc" />
            <!--<aop:advisor id="methodTimeLog" advice-ref="methodTimeAdvice" pointcut="execution(* 
                com.tmg.perfomance.service.impl.*.*(..))"/> -->
    
        </aop:config>
        <!-- 默认使用JDK动态代理,对于Schema风格配置切面使用如下方式来指定使用CGLIB代理。 <aop:config proxy-target-class="true"></aop:config> -->
        <bean id="methodTimeAdvice" class="com.ssm.interf.MethodTimeAdvice" />
    </beans>
    expression="execution(* com.ssm.service.impl.*.*(..))" 代表切入点,意思是com.ssm.service.impl包下的所有方法都会被切入 时间记录
      4、测试的类
    package com.ssm.service.impl;
    
    import org.springframework.stereotype.Service;
    
    import com.ssm.service.AopLogService;
    
    @Service("aopLogService")
    public class AopLogServiceImpl implements AopLogService {
    
        public void operation1() {
            System.out.println("运行方法:operation1");
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
    
        }
    
        public void operation2() {
            System.out.println("运行方法:operation2");
            try {
                Thread.sleep(2000);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    
        public void operation3() {
            System.out.println("运行方法:operation3");
            try {
                Thread.sleep(3000);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
    
        }
    
    }
    5、junit 运行测试
     
    package org.logRumTime;
    
    import org.BaseTest;
    import org.junit.Test;
    import org.springframework.beans.factory.annotation.Autowired;
    
    import com.ssm.service.AopLogService;
    
    public class RumTimeTest extends BaseTest {
        @Autowired
        private AopLogService aopLogService;
    
        @Test
        public void testOperation() {
            aopLogService.operation1();
            aopLogService.operation2();
            aopLogService.operation3();
        }
    
        public AopLogService getAopLogService() {
            return aopLogService;
        }
    
        public void setAopLogService(AopLogService aopLogService) {
            this.aopLogService = aopLogService;
        }
    }
    BaseTest 类代码
    package org;
    
    import org.junit.runner.RunWith;
    import org.springframework.test.context.ContextConfiguration;
    import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
    
    @RunWith(SpringJUnit4ClassRunner.class)//使用junit4进行测试
    @ContextConfiguration(locations= {"classpath:app-context-core.xml"})
    public class BaseTest {
    
    }
    运行结果:
     


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  • 原文地址:https://www.cnblogs.com/xyinjie/p/9474630.html
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