Spring-AOP实践 - 统计访问时间

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公司的项目有的页面超级慢，20s以上，不知道用户会不会疯掉，于是老大说这个页面要性能优化。于是，首先就要搞清楚究竟是哪一步耗时太多。

我采用spring aop来统计各个阶段的用时，其中计时器工具为StopWatch。

文章结构：

遇到的问题
创建项目
AOP-HelloWorld
时间统计
bug
final
压力测试
源码

其中，遇到的问题:

1.少包aspectjweaver

添加依赖后才可以使用@Aspect

2.环绕通知加入多个point

刚开使用&&连接多个point，傻傻的看不到调用，忽然看到要用||才对

3.监听时间工具StopWatch每次只能启动一个，一定要关闭后才能启动下一个。

而我想要测试controller->service->repository各个阶段用时显然很不适应。因为使用同一个stopwatch对象来保存时间，而stopwatch每次只能记录一个时间段作为总时间的一部分，不存在时间嵌套关系（这个以后可以考虑想想别的方案）。controller开始后执行部分验证逻辑或是其他，然后调用service，这时候service启动定时会失败，因为controller的计时器还没关，因此需要先关掉controller的计时器。这样会导致controller的计时部分仅仅是调用service之前的时间，service返回值之后，controller再进行某些处理的时间并没有统计。显然，我需要一个卡表的时间统计设计，即进入controller开始计时，调用service后开始service计时，以此类推，最后获得controller总时间Tc，service总时间Ts，repository总时间Tr.所以时间统计应该如图1：

图一图二

这样的话，我应该分别获得Tc,Ts,Tr的时间，然后计算百分比或者别的统计工作。也就是说，log仅仅是log，记录而已，想要得到一个统计结果还需要针对数据二次开发，这就需要将时间存储起来或者进行日志挖掘，然而这统计的工作会越来越复杂，最终我都不知会加多少任务进去。

事实上，我们这个页面耗费时间主要是多个webservice调用产生的io耗时，也就是说其实统计一个层面的时间就差不多了。那么，忽略service返回后controller的其他时间，仅仅计算controller开始到调用service的时间为Tc,service开始到调用repository的时间为Ts，如图2，这样利用StopWatch就很容获取时间统计结果。

4.线程不安全

我居然使用单例的一个成员变量做状态存储，真是。待改进

1.搭建项目

采用spring-boot-aop的框架来搭建。最终结构图如下：

1.1在idea中，new project-》maven

1.2初始化pom，添加aop，web，test依赖：

<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0"         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">    <modelVersion>4.0.0</modelVersion>    <groupId>com.test</groupId>    <artifactId>spring-aop</artifactId>    <version>1.0-SNAPSHOT</version>    <dependencyManagement>        <dependencies>            <dependency>                <!-- Import dependency management from Spring Boot -->                <groupId>org.springframework.boot</groupId>                <artifactId>spring-boot-dependencies</artifactId>                <version>1.3.5.RELEASE</version>                <type>pom</type>                <scope>import</scope>            </dependency>        </dependencies>    </dependencyManagement>    <dependencies>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-aop</artifactId>        </dependency>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-web</artifactId>        </dependency>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-test</artifactId>            <scope>test</scope>        </dependency>        <dependency>            <groupId>org.assertj</groupId>            <artifactId>assertj-core-java8</artifactId>            <version>1.0.0m1</version>        </dependency>    </dependencies>    <build>        <plugins>            <plugin>                <groupId>org.springframework.boot</groupId>                <artifactId>spring-boot-maven-plugin</artifactId>            </plugin>        </plugins>    </build></project>

1.3创建启动入口：com.test.spring.aop.Application.java

package com.test.spring.aop;import com.test.spring.aop.domain.service.IHelloService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.boot.CommandLineRunner;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;/** * Created by miaorf on 2016/7/16. */@SpringBootApplicationpublic class Application implements CommandLineRunner{    @Autowired    IHelloService helloService;    public void run(String... strings) throws Exception {        System.out.println("start application by CommandLineRunner, the args:"+strings.length);        helloService.sayHi();    }    public static void main(String[] args) throws Exception {        SpringApplication.run(Application.class, args);    }}

1.4发现我们需要一个service:

创建com.test.spring.aop.domain.service.IHelloService

package com.test.spring.aop.domain.service;/** * Created by miaorf on 2016/7/16. */public interface IHelloService {    void sayHi();}

创建com.test.spring.aop.domain.service.impl.HelloService

package com.test.spring.aop.domain.service.impl;import com.test.spring.aop.domain.service.IHelloService;import org.springframework.beans.factory.annotation.Value;import org.springframework.stereotype.Service;/** * Created by miaorf on 2016/7/16. */@Servicepublic class HelloService implements IHelloService {    @Value("${name}")    private String name;    public void sayHi() {        for (int i = 0; i < 100000; i++) {        }        System.out.println("Hi "+name);        System.out.println("I'm  running.");    }}

1.5发现我们需要一个属性配置文件：

创建application.yml

1 name: Ryan

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1.6这时候可以测试一下启动看看了

直接启动：运行com.test.spring.aop.Application#main()即可。

命令行启动：mvn spring-boot:run，

命令行bug启动：mvn spring-boot:run -Drun.jvmArguments="-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=5005"

1.7创建测试com.test.spring.aop.ApplicationTest

package com.test.spring.aop;import org.junit.After;import org.junit.Before;import org.junit.Rule;import org.junit.Test;import org.springframework.boot.test.OutputCapture;import static org.assertj.core.api.Assertions.assertThat;/** * Created by miaorf on 2016/7/16. */public class ApplicationTest {    @Rule    public OutputCapture outputCapture = new OutputCapture();    private String profiles;    @Before    public void init() throws Exception {        this.profiles = System.getProperty("spring.profiles.active");    }    @After    public void tearDown() throws Exception {        if (this.profiles != null){            System.setProperty("spring.profiles.active",this.profiles);        }else{            System.out.println("spring.profiles.active");        }    }    @Test    public void testDefaultSettings() throws Exception{        Application.main(new String[0]);        String s = this.outputCapture.toString();        assertThat(s).contains("Hi Ryan");    }    @Test    public void testCommandLineOverrides() throws Exception {        Application.main(new String[] {"--name=Leslie"});        String s = this.outputCapture.toString();        assertThat(s).contains("Hi Leslie");    }}

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2.AOP - HelloWorld

2.1创建com.test.spring.aop.monitor.ServiceMonitor

package com.test.spring.aop.monitor;import org.aspectj.lang.ProceedingJoinPoint;import org.aspectj.lang.annotation.*;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.stereotype.Component;import org.springframework.util.StopWatch;/** * Created by miaorf on 2016/7/16. */@Aspect@Componentpublic class ServiceMonitor {    private static Logger logger = LoggerFactory.getLogger(ServiceMonitor.class);    StopWatch stopWatch = new StopWatch("performance");    /**     * define point     */    @Pointcut("execution(* com.test.spring.aop..*Service.*(..))")    public void performance(){}//    @Before("performance()")//    public void startService(){//        System.out.println("-----------service start-------");//    }//    @After("performance()")//    public void endService(){//        System.out.println("-----------service end neither success or failed -------");//    }////    @AfterReturning("performance()")//    public void logServiceAccess(JoinPoint joinPoint) {//        System.out.println("service completed:"+joinPoint);//    }    /**     * 必须要返回，不然后面收不到     * @param point     * @return     */    @Around("performance()")    public Object watchPerformance(ProceedingJoinPoint point){        System.out.println("The service start:");        stopWatch.start(point.getSignature().toString());        try {            return point.proceed();        } catch (Throwable throwable) {            logger.error("The service not work!",throwable);            throwable.printStackTrace();        }finally {            stopWatch.stop();            stopWatch.start("b");            for (int i = 0; i < 12345; i++) {            }            stopWatch.stop();            StopWatch.TaskInfo[] taskInfo = stopWatch.getTaskInfo();            for (StopWatch.TaskInfo info : taskInfo) {                System.out.println(info.getTaskName());                System.out.println(info.getTimeMillis());            }            logger.info("The {} run time:{}",point.getSignature().toString(),stopWatch.prettyPrint());        }        return null;    }}

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2.2测试

测试水平还没开始，所以只能手动测试了，运行com.test.spring.aop.ApplicationTest可以看到在HelloService调用前后插入了日志。

3.时间统计

最终，生成类图如下：

最终获得的时间统计如下：

2016-07-16 21:25:09.361  INFO 16824 --- [nio-8080-exec-4] com.test.spring.aop.monitor.UserMonitor  : StopWatch 'controller': running time (millis) = 3218-----------------------------------------ms     %     Task name-----------------------------------------01001  031%  List com.test.spring.aop.domain.service.IUserService.getAll()02000  062%  Object com.test.spring.aop.domain.repository.IConnector.getSthFromRemote()00217  007%  List com.test.spring.aop.domain.repository.IUserDao.getAll()

3.1需要设计一个controller

创建com.test.spring.aop.web.UserController：

package com.test.spring.aop.web;import com.test.spring.aop.domain.entiry.User;import com.test.spring.aop.domain.service.IUserService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;import java.util.List;/** * Created by miaorf on 2016/7/16. */@Controller@RequestMapping("/user")public class UserController {    @Autowired    private IUserService userService;    @ResponseBody    @RequestMapping("/all")    public List<User> users(){        try {Thread.sleep(1000);} catch (InterruptedException e) {e.printStackTrace();}        List<User> all = userService.getAll();        return all;    }}

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3.2发现需要一个service

创建com.test.spring.aop.domain.service.IUserService

package com.test.spring.aop.domain.service;import com.test.spring.aop.domain.entiry.User;import java.util.List;/** * Created by miaorf on 2016/7/16. */public interface IUserService {    List<User> getAll();}

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创建com.test.spring.aop.domain.service.impl.UserService

package com.test.spring.aop.domain.service.impl;import com.test.spring.aop.domain.entiry.User;import com.test.spring.aop.domain.repository.IConnector;import com.test.spring.aop.domain.repository.IUserDao;import com.test.spring.aop.domain.service.IUserService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import java.util.List;/** * Created by miaorf on 2016/7/16. */@Servicepublic class UserService implements IUserService {    @Autowired    private IUserDao userDao;    @Autowired    private IConnector connector;    public List<User> getAll() {        try {Thread.sleep(1000);} catch (InterruptedException e) {e.printStackTrace();}        connector.getSthFromRemote();        return userDao.getAll();    }}

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3.3发现需要一个repository

创建com.test.spring.aop.domain.repository.IUserDao

package com.test.spring.aop.domain.repository;import com.test.spring.aop.domain.entiry.User;import java.util.List;/** * Created by miaorf on 2016/7/16. */public interface IUserDao {    List<User> getAll();}

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创建com.test.spring.aop.domain.repository.impl.UserDao

package com.test.spring.aop.domain.repository.impl;import com.test.spring.aop.domain.entiry.User;import com.test.spring.aop.domain.repository.IUserDao;import org.springframework.stereotype.Repository;import java.util.ArrayList;import java.util.List;/** * Created by miaorf on 2016/7/16. */@Repositorypublic class UserDao implements IUserDao {    public List<User> getAll() {        //mock data        List<User> list = new ArrayList<User>(10000);        for (int i = 0; i < 10000; i++) {            list.add(new User(i,"name_"+i,getRondomString(6),i,i%2,getRondomString(100)));        }        return list;    }    private String getRondomString(int length){        StringBuffer buf = new StringBuffer("a,b,c,d,e,f,g,h,i,g,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z");        buf.append(",A,B,C,D,E,F,G,H,I,G,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z");        buf.append(",~,@,#,$,%,^,&,*,(,),_,+,|,`,.");        buf.append(",1,2,3,4,5,6,7,8,9,0");        String[] arr = buf.toString().split(",");        StringBuffer result = new StringBuffer();        for (int i = 0; i < length; i++) {            int random = (int) (Math.random() * 10000 + 1);            result.append(arr[random % arr.length]);        }        return result.toString();    }}

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3.3.1临时添加一个远程调用

创建com.test.spring.aop.domain.repository.IConnector

package com.test.spring.aop.domain.repository;/** * Created by miaorf on 2016/7/16. */public interface IConnector {    Object getSthFromRemote();}

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创建com.test.spring.aop.domain.repository.impl.Connector

package com.test.spring.aop.domain.repository.impl;import com.test.spring.aop.domain.repository.IConnector;import org.springframework.stereotype.Component;/** * Created by miaorf on 2016/7/16. */@Componentpublic class Connector implements IConnector {    public Object getSthFromRemote() {        //mock time        try {Thread.sleep(2000);} catch (InterruptedException e) {e.printStackTrace();}        return null;    }}

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3.4发现需要一个实体类

创建com.test.spring.aop.domain.entiry.User

package com.test.spring.aop.domain.entiry;/** * Created by miaorf on 2016/7/16. */public class User {    Integer id;    String username;    String password;    Integer age;    Integer sex;    String info;    public User() {    }    public User(Integer id, String username, String password, Integer age, Integer sex, String info) {        this.id = id;        this.username = username;        this.password = password;        this.age = age;        this.sex = sex;        this.info = info;    }    public Integer getId() {        return id;    }    public void setId(Integer id) {        this.id = id;    }    public String getUsername() {        return username;    }    public void setUsername(String username) {        this.username = username;    }    public String getPassword() {        return password;    }    public void setPassword(String password) {        this.password = password;    }    public Integer getAge() {        return age;    }    public void setAge(Integer age) {        this.age = age;    }    public Integer getSex() {        return sex;    }    public void setSex(Integer sex) {        this.sex = sex;    }    public String getInfo() {        return info;    }    public void setInfo(String info) {        this.info = info;    }    @Override    public String toString() {        return "User{" +                "id=" + id +                ", username='" + username + '\'' +                ", password='" + password + '\'' +                ", age=" + age +                ", sex=" + sex +                ", info='" + info + '\'' +                '}';    }}

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3.5完成

以上就基本把一个web接口搞定了，可以运行测试一下，使用浏览器或者postman访问localhost:8080/user/all就可以获得user列表了。

3.6加入user时间统计

创建com.test.spring.aop.monitor.UserMonitor

package com.test.spring.aop.monitor;import org.aspectj.lang.ProceedingJoinPoint;import org.aspectj.lang.annotation.*;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.stereotype.Component;import org.springframework.util.StopWatch;/** * Created by miaorf on 2016/7/16. */@Aspect@Componentpublic class UserMonitor {    private static Logger logger = LoggerFactory.getLogger(UserMonitor.class);    StopWatch stopWatch;    @Pointcut("execution(* com.test.spring.aop.web.UserController.users())")    public void controllerPerformance() {    }    @Pointcut("execution(* com.test.spring.aop.domain.service.impl.UserService.getAll())")    public void servicePerformance() {    }    @Pointcut("execution(* com.test.spring.aop.domain.repository.impl.UserDao.getAll())")    public void repositoryPerformance() {    }    @Pointcut("execution(* com.test.spring.aop.domain.repository.impl.Connector.getSthFromRemote())")    public void connectorPerformance() {    }    @Before("controllerPerformance()")    public void startWatch() {        stopWatch = new StopWatch("controller");    }    @After("controllerPerformance()")    public void endWatch() {        logger.info(stopWatch.prettyPrint());        stopWatch = null;    }    @Around("servicePerformance() || repositoryPerformance() || connectorPerformance()")    public Object watchPerformance(ProceedingJoinPoint joinPoint) throws Throwable {        System.out.println("---------------------------");        try {            //如果是一层一层的，这里只能统计到到下一层需要的时间，因为返回值后没有统计，也就是说只能统计平行的调用            if (stopWatch.isRunning()){                stopWatch.stop();            }            stopWatch.start(joinPoint.getSignature().toString());        } catch (IllegalStateException e) {            logger.error("watch start error:",e);        }        Object proceed = joinPoint.proceed();        try {            if (stopWatch.isRunning()){                stopWatch.stop();            }        } catch (IllegalStateException e) {            logger.error("watch end error:",e);        }        return proceed;    }}

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这里有几点问题：

1.StopWatch不能重复创建，如果想统计每次controller访问时间，必须在访问前初始化，访问后废除。

2.这里的时间统计仅仅针对controller入口的统计，也就是说，如果别的调用了service，这个时间是不统计的，因为StopWatch没有初始化。

3.StopWatch的prettyPrint是一个很好的东东

4.如果想要向开始那样，完全统计每层耗时，这个设计需要重新设计。当前有这样的想法。controller切点初始化三个或者多个StopWatch；service、repository等分别建立切点并计时；controller执行完毕之后的切点汇总统计数据，销毁各个StopWatch。这样就做到了每个层都统计了。然而问题来了，如果一个controller调用了多个service，显然需要统计所有service耗时和单个service耗时。

Boo! Big Bug!!!

今早起来接着看，忽然想起spring bean管理是单例的，而且必须是单例的才可以使用共同的成员变量，但问题来了，spring的controller是多线程的。也就是说，这个切面进入不是排队的，第一个请求过程中第二个请求也是可以进来的。那么，共享成员变量实在是愚蠢的决定。然而选择创建一个类来管理对应一个请求的计时器也不好的，如果并发量超级大岂不是每个人都会产生一个类？

因此，这个计时器必须是一个过程量，可以在指定区间（即controller执行期间）生存，而后销毁。对应的，显然是每个并发请求会至少产生一个类。也就是说，我需要在controller请求的时候new 一个StopWatch的id，然后在接下来的一系列调用中都使用这个id对应的计时器，最后销毁。如果几百万个并发量，那么就会产生几百万个类实例。懵逼。

最终选择

通过一个实例来保存一次请求状态太消耗性能，而如果不通过一个类实例保存状态就无法汇总所有的时间。所以这个方案不合适。那么，剩下日志和传入数据库。当下就先记录日志好了。记录想要记录的节点的时间：

package com.test.spring.aop.monitor;import org.aspectj.lang.ProceedingJoinPoint;import org.aspectj.lang.Signature;import org.aspectj.lang.annotation.Around;import org.aspectj.lang.annotation.Aspect;import org.aspectj.lang.annotation.Pointcut;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.stereotype.Component;import org.springframework.util.StopWatch;/** * Created by miaorf on 2016/7/16. */@Aspect@Componentpublic class UserMonitor {    private static Logger logger = LoggerFactory.getLogger(UserMonitor.class);    @Pointcut("execution(* com.test.spring.aop.web.UserController.users())")    public void controllerPerformance() {    }    @Pointcut("execution(* com.test.spring.aop.domain.service.impl.UserService.getAll())")    public void servicePerformance() {    }    @Pointcut("execution(* com.test.spring.aop.domain.repository.impl.UserDao.getAll())")    public void repositoryPerformance() {    }    @Pointcut("execution(* com.test.spring.aop.domain.repository.impl.Connector.getSthFromRemote())")    public void connectorPerformance() {    }    @Around("controllerPerformance() || servicePerformance() || repositoryPerformance() || connectorPerformance()")    public Object watchPerformance(ProceedingJoinPoint joinPoint) throws Throwable {        Signature signature = joinPoint.getSignature();        logger.info("=================start {}=====================",signature.getName());        StopWatch stopWatch = new StopWatch("controller");        try {            if (stopWatch.isRunning()) {                stopWatch.stop();            }            stopWatch.start(signature.toString());        } catch (IllegalStateException e) {            logger.error("watch start error:", e);        }        Object proceed = joinPoint.proceed();        try {            if (stopWatch.isRunning()) {                stopWatch.stop();                logger.info(stopWatch.prettyPrint()+"\n================= end {}=====================",signature.getName());            }        } catch (IllegalStateException e) {            logger.error("watch end error:", e);        }        return proceed;    }}

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压力测试

1.建立test case

首先，测试controller：创建com.test.spring.aop.web.UserControllerTest

package com.test.spring.aop.web;import com.test.spring.aop.Application;import org.junit.Assert;import org.junit.Before;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.boot.test.SpringApplicationConfiguration;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;import org.springframework.test.context.web.WebAppConfiguration;import org.springframework.test.web.servlet.MockMvc;import org.springframework.test.web.servlet.MvcResult;import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;import org.springframework.test.web.servlet.result.MockMvcResultHandlers;import org.springframework.test.web.servlet.result.MockMvcResultMatchers;import org.springframework.test.web.servlet.setup.MockMvcBuilders;import org.springframework.web.context.WebApplicationContext;import static org.junit.Assert.*;/** * Created by miaorf on 2016/7/17. */@RunWith(SpringJUnit4ClassRunner.class)@SpringApplicationConfiguration(Application.class)@WebAppConfigurationpublic class UserControllerTest {    @Autowired    private WebApplicationContext wac;    private MockMvc mockMvc;    @Before    public void setUp() {        mockMvc = MockMvcBuilders.webAppContextSetup(wac).build();    }    @Test    public void testUsers() throws Exception {        MvcResult result = mockMvc.perform(MockMvcRequestBuilders.get("/user/all"))                .andExpect(MockMvcResultMatchers.status().isOk())                .andExpect(MockMvcResultMatchers.jsonPath("$[0].id").value(0))//                .andDo(MockMvcResultHandlers.print())                .andReturn();    }    @Test    public void testUsersConcurrent() throws  Exception{        for (int i = 0; i < 10; i++) {            new Thread(() -> {                try {                    mockMvc.perform(MockMvcRequestBuilders.get("/user/all")).andExpect(MockMvcResultMatchers.status().isOk());                } catch (Exception e) {                    e.printStackTrace();                }            }).run();        }    }}

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不知道为啥，我的new Thread并没有并发执行，而是按顺序执行的。也就是说，虽然我new 10 个Thread，但还是一个接一个的运行。

改进
于是，我想采用线程池：

 @Test    public void testUsersConcurrent() throws  Exception{        ThreadPoolExecutor executor = new ThreadPoolExecutor(5,10,200, TimeUnit.MILLISECONDS,new ArrayBlockingQueue<Runnable>(5));        //不能超过15        for (int i = 0; i < 15; i++) {            executor.execute(()->{                try {                    mockMvc.perform(MockMvcRequestBuilders.get("/user/all")).andExpect(MockMvcResultMatchers.status().isOk());                } catch (Exception e) {                    e.printStackTrace();                }            });        }        //等待其他线程执行,方便查看控制台打印结果        Thread.sleep(100000);    }

这下就可以看到controller是多线程并发的了，因为瞬间就打印了10条controller访问日志，正好是线程池的最大容量：

016-07-17 12:20:10.336  INFO 12792 --- [           main] o.s.t.web.servlet.TestDispatcherServlet  : FrameworkServlet '': initialization completed in 24 ms2016-07-17 12:20:10.431  INFO 12792 --- [pool-1-thread-8] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:20:10.431  INFO 12792 --- [pool-1-thread-6] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:20:10.431  INFO 12792 --- [pool-1-thread-4] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:20:10.431  INFO 12792 --- [pool-1-thread-2] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:20:10.432  INFO 12792 --- [ool-1-thread-10] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:20:10.432  INFO 12792 --- [pool-1-thread-3] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:20:10.432  INFO 12792 --- [pool-1-thread-7] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:20:10.432  INFO 12792 --- [pool-1-thread-5] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:20:10.432  INFO 12792 --- [pool-1-thread-1] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:20:10.432  INFO 12792 --- [pool-1-thread-9] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================

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2.采用Apache 的ab进行并发访问

2.1下载Apache

参考：使用Apache Server 的ab进行web请求压力测试

2.2测试

D:\Java\httpd-2.4.23-x64-vc14\Apache24\bin>ab -n 20 -c 10 localhost:8080/user/allThis is ApacheBench, Version 2.3 <$Revision: 1748469 $>Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/Licensed to The Apache Software Foundation, http://www.apache.org/Benchmarking localhost (be patient).....doneServer Software:        Apache-Coyote/1.1Server Hostname:        localhostServer Port:            8080Document Path:          /user/allDocument Length:        1836671 bytesConcurrency Level:      10Time taken for tests:   31.199 secondsComplete requests:      20Failed requests:        0Total transferred:      36736380 bytesHTML transferred:       36733420 bytesRequests per second:    0.64 [#/sec] (mean)Time per request:       15599.677 [ms] (mean)Time per request:       1559.968 [ms] (mean, across all concurrent requests)Transfer rate:          1149.88 [Kbytes/sec] receivedConnection Times (ms)              min  mean[+/-sd] median   maxConnect:        0    0   0.4      0       1Processing: 14785 15524 600.3  16085   16148Waiting:    14593 15310 505.1  15781   15831Total:      14785 15524 600.3  16085   16148Percentage of the requests served within a certain time (ms)  50%  16085  66%  16090  75%  16099  80%  16114  90%  16140  95%  16148  98%  16148  99%  16148 100%  16148 (longest request)

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可以看到服务端是多线程的：

2016-07-17 12:26:28.455  INFO 18580 --- [           main] com.test.spring.aop.Application          : Started Application in 8.37 seconds (JVM running for 9.23)2016-07-17 12:26:40.966  INFO 18580 --- [nio-8080-exec-9] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring FrameworkServlet 'dispatcherServlet'2016-07-17 12:26:40.966  INFO 18580 --- [nio-8080-exec-9] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization started2016-07-17 12:26:40.992  INFO 18580 --- [nio-8080-exec-9] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization completed in 25 ms2016-07-17 12:26:41.049  INFO 18580 --- [nio-8080-exec-5] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:26:41.049  INFO 18580 --- [io-8080-exec-10] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:26:41.049  INFO 18580 --- [nio-8080-exec-8] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:26:41.050  INFO 18580 --- [nio-8080-exec-7] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:26:41.050  INFO 18580 --- [nio-8080-exec-2] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:26:41.050  INFO 18580 --- [nio-8080-exec-1] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:26:41.050  INFO 18580 --- [nio-8080-exec-3] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:26:41.050  INFO 18580 --- [nio-8080-exec-4] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:26:41.051  INFO 18580 --- [nio-8080-exec-6] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:26:41.051  INFO 18580 --- [nio-8080-exec-9] com.test.spring.aop.monitor.UserMonitor  : =================start UserController.users()=====================2016-07-17 12:26:51.061  INFO 18580 --- [nio-8080-exec-1] com.test.spring.aop.monitor.UserMonitor  : =================start IUserService.getAll()=====================2016-07-17 12:26:51.061  INFO 18580 --- [nio-8080-exec-6] com.test.spring.aop.monitor.UserMonitor  : =================start IUserService.getAll()=====================2016-07-17 12:26:51.061  INFO 18580 --- [nio-8080-exec-9] com.test.spring.aop.monitor.UserMonitor  : =================start IUserService.getAll()=====================2016-07-17 12:26:51.061  INFO 18580 --- [io-8080-exec-10] com.test.spring.aop.monitor.UserMonitor  : =================start IUserService.getAll()=====================2016-07-17 12:26:51.061  INFO 18580 --- [nio-8080-exec-3] com.test.spring.aop.monitor.UserMonitor  : =================start IUserService.getAll()=====================2016-07-17 12:26:51.061  INFO 18580 --- [nio-8080-exec-2] com.test.spring.aop.monitor.UserMonitor  : =================start IUserService.getAll()=====================2016-07-17 12:26:51.061  INFO 18580 --- [nio-8080-exec-4] com.test.spring.aop.monitor.UserMonitor  : =================start IUserService.getAll()=====================2016-07-17 12:26:51.061  INFO 18580 --- [nio-8080-exec-8] com.test.spring.aop.monitor.UserMonitor  : =================start IUserService.getAll()=====================2016-07-17 12:26:51.062  INFO 18580 --- [nio-8080-exec-5] com.test.spring.aop.monitor.UserMonitor  : =================start IUserService.getAll()=====================2016-07-17 12:26:51.062  INFO 18580 --- [nio-8080-exec-7] com.test.spring.aop.monitor.UserMonitor  : =================start IUserService.getAll()=====================2016-07-17 12:26:52.062  INFO 18580 --- [nio-8080-exec-9] com.test.spring.aop.monitor.UserMonitor  : =================start IConnector.getSthFromRemote()=====================2016-07-17 12:26:52.062  INFO 18580 --- [nio-8080-exec-6] com.test.spring.aop.monitor.UserMonitor  : =================start IConnector.getSthFromRemote()=====================2016-07-17 12:26:52.062  INFO 18580 --- [nio-8080-exec-1] com.test.spring.aop.monitor.UserMonitor  : =================start IConnector.getSthFromRemote()=====================2016-07-17 12:26:52.063  INFO 18580 --- [io-8080-exec-10] com.test.spring.aop.monitor.UserMonitor  : =================start IConnector.getSthFromRemote()=====================2016-07-17 12:26:52.063  INFO 18580 --- [nio-8080-exec-3] com.test.spring.aop.monitor.UserMonitor  : =================start IConnector.getSthFromRemote()=====================2016-07-17 12:26:52.063  INFO 18580 --- [nio-8080-exec-2] com.test.spring.aop.monitor.UserMonitor  : =================start IConnector.getSthFromRemote()=====================2016-07-17 12:26:52.063  INFO 18580 --- [nio-8080-exec-8] com.test.spring.aop.monitor.UserMonitor  : =================start IConnector.getSthFromRemote()=====================2016-07-17 12:26:52.063  INFO 18580 --- [nio-8080-exec-4] com.test.spring.aop.monitor.UserMonitor  : =================start IConnector.getSthFromRemote()=====================2016-07-17 12:26:52.063  INFO 18580 --- [nio-8080-exec-5] com.test.spring.aop.monitor.UserMonitor  : =================start IConnector.getSthFromRemote()=====================2016-07-17 12:26:52.063  INFO 18580 --- [nio-8080-exec-7] com.test.spring.aop.monitor.UserMonitor  : =================start IConnector.getSthFromRemote()=====================2016-07-17 12:26:54.063  INFO 18580 --- [nio-8080-exec-6] com.test.spring.aop.monitor.UserMonitor  : StopWatch 'controller': running time (millis) = 2000-----------------------------------------ms     %     Task name-----------------------------------------02000  100%  Object com.test.spring.aop.domain.repository.IConnector.getSthFromRemote()================= end IConnector.getSthFromRemote()=====================2016-07-17 12:26:54.063  INFO 18580 --- [nio-8080-exec-9] com.test.spring.aop.monitor.UserMonitor  : StopWatch 'controller': running time (millis) = 2001-----------------------------------------ms     %     Task name-----------------------------------------02001  100%  Object com.test.spring.aop.domain.repository.IConnector.getSthFromRemote()================= end IConnector.getSthFromRemote()=====================2016-07-17 12:26:54.063  INFO 18580 --- [nio-8080-exec-3] com.test.spring.aop.monitor.UserMonitor  : StopWatch 'controller': running time (millis) = 2000-----------------------------------------ms     %     Task name-----------------------------------------02000  100%  Object com.test.spring.aop.domain.repository.IConnector.getSthFromRemote()================= end IConnector.getSthFromRemote()=====================2016-07-17 12:26:54.063  INFO 18580 --- [nio-8080-exec-1] com.test.spring.aop.monitor.UserMonitor  : StopWatch 'controller': running time (millis) = 2000-----------------------------------------ms     %     Task name-----------------------------------------02000  100%  Object com.test.spring.aop.domain.repository.IConnector.getSthFromRemote()================= end IConnector.getSthFromRemote()=====================2016-07-17 12:26:54.063  INFO 18580 --- [io-8080-exec-10] com.test.spring.aop.monitor.UserMonitor  : StopWatch 'controller': running time (millis) = 2000-----------------------------------------ms     %     Task name-----------------------------------------02000  100%  Object com.test.spring.aop.domain.repository.IConnector.getSthFromRemote()================= end IConnector.getSthFromRemote()=====================2016-07-17 12:26:54.064  INFO 18580 --- [nio-8080-exec-4] com.test.spring.aop.monitor.UserMonitor  : StopWatch 'controller': running time (millis) = 2001-----------------------------------------ms     %     Task name-----------------------------------------02001  100%  Object com.test.spring.aop.domain.repository.IConnector.getSthFromRemote()

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项目源码：https://github.com/chenxing12/spring-aop

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