Spring-AOP实践 - 统计访问时间

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.
*/
@SpringBootApplication
public 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.
*/
@Service
public 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

View Code
 

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
@Component
public 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;
}
}

View Code
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();
}

View Code
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.
*/
@Service
public 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();
}

View Code
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.
*/
@Repository
public 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();
}

View Code
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.
*/
@Component
public 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
@Component
public 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
@Component
public 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)
@WebAppConfiguration
public 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();
}
}

}

View Code
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 ms
2016-07-17 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()=====================

View Code
 

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/all
This 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).....done

Server Software:        Apache-Coyote/1.1
Server Hostname:        localhost
Server Port:            8080

Document Path:          /user/all
Document Length:        1836671 bytes

Concurrency Level:      10
Time taken for tests:   31.199 seconds
Complete requests:      20
Failed requests:        0
Total transferred:      36736380 bytes
HTML transferred:       36733420 bytes
Requests 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] received

Connection Times (ms)
min  mean[+/-sd] median   max
Connect:        0    0   0.4      0       1
Processing: 14785 15524 600.3  16085   16148
Waiting:    14593 15310 505.1  15781   15831
Total:      14785 15524 600.3  16085   16148

Percentage 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)

View Code
 

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 started
2016-07-17 12:26:40.992  INFO 18580 --- [nio-8080-exec-9] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization completed in 25 ms
2016-07-17 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()

View Code
 

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