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Dubbo-demo实例写作

简介: 这是我对Dubbo服务开展性能测试所做准备的第二篇学习笔记,编写了一对Dubbo-Demo实例。主要参照的原帖:http://www.cnblogs.com/miaomiaokaixin/p/6129733.html 由于原作者这篇指导文章写作的时间是2016年,使用的依赖包版本较旧;在学习的过程中,改用了较新版本的Maven依赖,同时遇到一些错误。

这是我对Dubbo服务开展性能测试所做准备的第二篇学习笔记,编写了一对Dubbo-Demo实例。主要参照的原帖:http://www.cnblogs.com/miaomiaokaixin/p/6129733.html

由于原作者这篇指导文章写作的时间是2016年,使用的依赖包版本较旧;在学习的过程中,改用了较新版本的Maven依赖,同时遇到一些错误。本文的写作目的在于及时的记录下学习过程、应对问题的解决等。

 本文讲解jmeter测试dubbo接口的实现方式,文章以一个dubbo的接口为例子进行讲解,该dubbo接口实现的功能为:

如果您想搭建Dubbo学习环境,请看另一篇文档《搭建Dubbo开发学习环境》。

 

一、服务端的工程

完成后的代码架构如下:

 

 

1. 创建一个Maven工程,取名:demo_dubbo_provider

 POM文件为: 

<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.ustc.demo.provider</groupId>
    <artifactId>demo_dubbo_provider</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
    
    <name>dubbo-provider</name>
    <url>http://maven.apache.org</url>
    
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
    
    <dependencies>
        
        <!-- https://mvnrepository.com/artifact/junit/junit -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
        
        <!-- https://mvnrepository.com/artifact/com.alibaba/dubbo -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>dubbo</artifactId>
            <version>2.6.1</version>
        </dependency>
        
        <!-- https://mvnrepository.com/artifact/com.github.sgroschupf/zkclient -->
        <dependency>
            <groupId>com.github.sgroschupf</groupId>
            <artifactId>zkclient</artifactId>
            <version>0.1</version>
        </dependency>
        
        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>3.4.12</version>
        </dependency>
        
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.0.5.RELEASE</version>
        </dependency>
         
        <!-- https://mvnrepository.com/artifact/org.apache.curator/curator-framework -->
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-framework</artifactId>
            <version>4.0.1</version>
        </dependency>
        
    </dependencies>
        
    <build>
        <plugins>
            <plugin>
                <artifactId>maven-dependency-plugin</artifactId>
                    <executions>
                    <execution>
                        <id>unpack</id>
                        <phase>package</phase>
                        <goals>
                            <goal>unpack</goal>
                        </goals>
                        <configuration>
                            <artifactItems>
                                <artifactItem>
                                    <groupId>com.alibaba</groupId>
                                    <artifactId>dubbo</artifactId>
                                    <version>2.6.1</version>
                                    <includes>META-INF/assembly/**</includes>
                                </artifactItem>
                            </artifactItems>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
            
            <plugin>
                <artifactId>maven-assembly-plugin</artifactId>
                <configuration>
                    <descriptor>src/main/assembly/assembly.xml</descriptor>
                    <encoding>UTF-8</encoding>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

2. 在src/main下新建文件夹assembly,然后在assembly文件夹下新建assembly.xml文件:

<?xml version="1.0" encoding="UTF-8"?>
<assembly>
    <id>assembly</id>
    <formats>
        <format>tar.gz</format>
    </formats>
    <includeBaseDirectory>true</includeBaseDirectory>
    <fileSets>
        <fileSet>
            <directory>${project.build.directory}/dubbo/META-INF/assembly/bin</directory>
            <outputDirectory>bin</outputDirectory>
            <fileMode>0755</fileMode>
        </fileSet>
        <fileSet>
            <directory>src/main/assembly/conf</directory>
            <outputDirectory>conf</outputDirectory>
            <fileMode>0644</fileMode>
        </fileSet>
    </fileSets>
    <dependencySets>
        <dependencySet>
            <outputDirectory>lib</outputDirectory>
        </dependencySet>
    </dependencySets>
</assembly>

3. 在src/main/assembly文件夹下新建conf文件夹,然后在conf文件夹下新建dubbo.properties文件。文件中zookeeper的地址根据实际进行修改。

dubbo.container=log4j,spring
dubbo.application.name=demo-dubbo-provider
dubbo.application.owner=jason
#dubbo.registry.address=multicast://127.0.0.1:1234
dubbo.registry.address=zookeeper://192.168.8.241:2181
#dubbo.registry.address=redis://127.0.0.1:6379
#dubbo.registry.address=dubbo://127.0.0.1:9090
dubbo.monitor.protocol=registry
dubbo.protocol.name=dubbo
dubbo.protocol.port=20880
#dubbo.service.loadbalance=roundrobin
#dubbo.log4j.file=logs/dubbo-demo-provider.log
#dubbo.log4j.level=WARN

4. 在src/test/resources包路径下,新建dubbo.properties文件,内容和上面3的dubbo.properties文件内容相同。

5. 在src/test/resources路径下,新建log4j.xml文件,内容如下:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration PUBLIC "-//APACHE//DTD LOG4J 1.2//EN" "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">

    <!-- Appenders -->
    <appender name="console" class="org.apache.log4j.ConsoleAppender">
        <param name="Target" value="System.out" />
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%-5p: %c - %m%n" />
        </layout>
    </appender>
    
    <appender name="myFile" class="org.apache.log4j.RollingFileAppender">    
        <param name="File" value="logs/output.log" /><!-- 设置日志输出文件名 -->  
        <!-- 设置是否在重新启动服务时,在原有日志的基础添加新日志 -->  
        <param name="Append" value="true" />  
        <param name="MaxBackupIndex" value="10" />  
        <layout class="org.apache.log4j.PatternLayout">  
            <param name="ConversionPattern" value="%p (%c:%L)- %m%n" />  
        </layout>  
    </appender>
    
    <!-- Application Loggers -->
    <logger name="com.ustcinfo.ishare.eip.si">
        <level value="error" />
    </logger>
    
    <!-- 3rdparty Loggers -->
    <logger name="org.springframework.core">
        <level value="warn" />
    </logger>    
    
    <logger name="org.springframework.beans">
        <level value="info" />
    </logger>
    
    <logger name="org.springframework.context">
        <level value="info" />
    </logger>

    <logger name="org.springframework.web">
        <level value="info" />
    </logger>
    <logger name="org.mongodb.driver">
        <level value="warn" />
    </logger>

    <!-- Root Logger -->
    <root>
        <priority value="error" />
        <appender-ref ref="console" />
    </root>
    
</log4j:configuration>

 

下面开始编写provider的主方法:

6. 编写provider的接口sayHello,新建DemoService.java类:

package com.ustc.demo.provider;

public interface DemoService {
    public String sayHello(String name);
}

7. 编写sayHello接口的实现类,新建DemoServiceImpl.java类:

package com.ustc.demo.provider;

import java.text.SimpleDateFormat;
import java.util.Date;

public class DemoServiceImpl implements DemoService {

    @Override
    public String sayHello(String name) {
        // TODO Auto-generated method stub
        String time = new SimpleDateFormat("HH:mm:ss").format(new Date());
        System.out.println("From consumer: " + name);
        
        return "The current time is: " + time;
    }
    
}

8. 编写spring的配置文件,在META-INF/spring文件夹下的demo-provider.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:dubbo="http://code.alibabatech.com/schema/dubbo" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
    <bean id="demoService" class="com.ustc.demo.provider.DemoServiceImpl" />
    <dubbo:registry address="zookeeper://192.168.8.241:2181" />
    <dubbo:protocol name="dubbo" host="192.168.9.107" port="20880" />  
    <dubbo:service interface="com.ustc.demo.provider.DemoService" ref="demoService"/> 
</beans>

dubbo:registry address:服务注册于zookeeper所在的服务器;

dubbo:protocol host:服务提供方provider运行的服务器,添加Host字段可以避免其他机器上的消费方无法访问提供方;和同事实验过,缺少Host时仅我本地的消费方可以调用成功。

 

9. 编写测试main方法,新建DemoServiceMain.java类:

package com.ustc.demo.provider;

public class DemoServiceMain {
    public static void main(String[] args) {        
        com.alibaba.dubbo.container.Main.main(args);
    }
}

这样服务端的代码就写好了,实现的功能是:当消费者来询问当前时间是几点的时候,返回当前时间。

 

二、消费端的工程

完成后的代码架构如下:

1. 创建一个Maven工程,取名:demo_dubbo_consumer

POM文件为: 

<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.ustc.demo.consumer</groupId>
    <artifactId>demo_dubbo_comsumer</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    
    <packaging>jar</packaging>
    <name>consumer</name>
    <url>http://maven.apache.org</url>
    
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
    
    <dependencies>
        
        <!-- https://mvnrepository.com/artifact/junit/junit -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
        
        <!-- https://mvnrepository.com/artifact/com.alibaba/dubbo -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>dubbo</artifactId>
            <version>2.6.1</version>
        </dependency>
        
        <!-- https://mvnrepository.com/artifact/com.github.sgroschupf/zkclient -->
        <dependency>
            <groupId>com.github.sgroschupf</groupId>
            <artifactId>zkclient</artifactId>
            <version>0.1</version>
        </dependency>
        
        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
        </dependency>
        
        <!-- https://mvnrepository.com/artifact/org.apache.curator/curator-framework -->
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-framework</artifactId>
            <version>4.0.1</version>
        </dependency>
        
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>5.0.5.RELEASE</version>
        </dependency>
        
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.0.5.RELEASE</version>
        </dependency>
        
    </dependencies>
    
    <build>
        <plugins>
            <plugin>
                <artifactId>maven-dependency-plugin</artifactId>
                <executions>
                    <execution>
                        <id>unpack</id>
                        <phase>package</phase>
                        <goals>
                            <goal>unpack</goal>
                        </goals>
                        <configuration>
                            <artifactItems>
                                <artifactItem>
                                    <groupId>com.alibaba</groupId>
                                    <artifactId>dubbo</artifactId>
                                    <version>2.6.1</version>
                                    <includes>META-INF/assembly/**</includes>
                                </artifactItem>
                            </artifactItems>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <artifactId>maven-assembly-plugin</artifactId>
                <configuration>
                    <descriptor>src/main/assembly/assembly.xml</descriptor>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin> 

        </plugins>
    </build>
    
</project>

 

2. 在src/main下新建文件夹assembly,然后在assembly文件夹下新建assembly.xml文件。文件内容和Provider工程中的同名文件相同。

3. 在src/main/assembly文件夹下新建conf文件夹,然后在conf文件夹下新建dubbo.properties文件。文件内容和Provider工程中的同名文件相同。

4. 在src/test/resources包路径下,新建dubbo.properties文件,内容和上面的3中dubbo.properties文件内容相同。

 

下面编写(拷贝)provider的接口sayHello:

5. 新建DemoService.java类:

package com.ustc.demo.provider;

public interface DemoService {
    public String sayHello(String name);
}

6. 编写消费端请求类调用sayHello方法,新建DemoAction.java类: 

package com.ustc.demo.consumer;

import com.ustc.demo.provider.DemoService;

public class DemoAction {
    private DemoService demoService;

    public void setDemoService(DemoService demoService) {
        this.demoService = demoService;
    }
    
    public void start() throws Exception {
        for (int i = 0; i < Integer.MAX_VALUE; i++) {
            try {
                String hello = demoService.sayHello("Hello, how much is the current time?");
                System.out.println("From provider: " + hello);
            } catch (Exception e) {
                e.printStackTrace();
            }
            Thread.sleep(2000);
        }
    }
}

7. 编写spring的配置文件,在META-INF/spring文件夹下的dubbo-demo-action.xml文件:

<?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:dubbo
="http://code.alibabatech.com/schema/dubbo"
  xsi:schemaLocation
="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd"> <bean class="com.ustc.demo.consumer.DemoAction" init-method="start"> <property name="demoService" ref="demoService" /> </bean> </beans>

8. 编写spring的配置文件,在META-INF/spring文件夹下的dubbo-demo-consumer.xml文件:

<?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:dubbo="http://code.alibabatech.com/schema/dubbo"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
    <dubbo:reference id="demoService"
        interface="com.ustc.demo.provider.DemoService" />
</beans>

9. 编写测试main方法,新建DemoConsumerMain.java类:

 

package com.ustc.demo.consumer;

public class DemoConsumerMain {
    public static void main(String[] args) {
        com.alibaba.dubbo.container.Main.main(args);
    }
}

10. 编写log4j2的配置文件,在src/main/resources目录下创建log4j2.xml文件:

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="warn">
    <Appenders>
        <Console name="Console" target="SYSTEM_OUT">
            <PatternLayout pattern="%m%n" />
        </Console>
    </Appenders>
    <Loggers>
        <Root level="INFO">
        <AppenderRef ref="Console" />
    </Root>
    </Loggers>
</Configuration>

这样我们就完成了本地消费者代码,在编写符合jmeter格式的代码前,我们首先在本地开发工具中运行看看效果。

先启动服务提供方的main方法,然后启动服务消费方的main方法:

服务提供方控制台:

 

服务消费方控制台:

这样调试发现消费端向服务端发送:“How much is the current time?”;

然后服务端返回当前的时间,该dubbo接口的功能正常实现。

 

三、用JMeter模拟消费方

我们现在想对dubbo接口进行性能测试,可以用jmeter模拟服务消费方并发调用服务提供方。因为jmeter支持java请求,故我们可以将服务提供方打包部署到服务器上运行;本例没有部署,而是在Eclipse端保持运行。

然后我们将服务消费方打成jar包、放到jmeter的/lib/ext文件夹中,这样就能实现jmeter模拟消费方去请求服务端,进行性能测试。

现在我们来讲解如何将上面的服务消费端的代码、编写成可以打包放到jmeter中代码——即Java Sampler。

只需要对上面的消费者代码进行3处修改即可:

1. POM.xml文件

pom.xml文件中添加对jmeter的支持,在<dependencies></dependencies>之间添加如下代码: 

    <!-- java jmeter依赖jar包 -->
    <dependency>
        <groupId>org.apache.jmeter</groupId>
        <artifactId>ApacheJMeter_core</artifactId>
        <version>3.3</version>
    </dependency>
    <dependency>
        <groupId>org.apache.jmeter</groupId>
        <artifactId>ApacheJMeter_java</artifactId>
        <version>3.3</version>
    </dependency>

2. 在src/main/resources下新建applicationConsumer.xml文件,zookeeper地址根据需要进行修改:

<?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:dubbo="http://code.alibabatech.com/schema/dubbo"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans  
        http://www.springframework.org/schema/beans/spring-beans.xsd  
        http://code.alibabatech.com/schema/dubbo  
        http://code.alibabatech.com/schema/dubbo/dubbo.xsd  
        ">  
  
    <!-- consumer application name -->  
    <dubbo:application name="consumer-jmeter" />  
    <!-- registry address, used for consumer to discover services -->  
    <dubbo:registry address="zookeeper://192.168.8.241:2181" />  
    <!-- which service to consume? -->  
    <dubbo:reference id="demoService" interface="com.ustc.demo.provider.DemoService" />  
</beans>

3. 在com.ustc.demo.consumer包下新建JmeterDemoAction.java类:

package com.ustc.demo.consumer;

import org.apache.jmeter.protocol.java.sampler.AbstractJavaSamplerClient;
import org.apache.jmeter.protocol.java.sampler.JavaSamplerContext;
import org.apache.jmeter.samplers.SampleResult;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.ustc.demo.provider.DemoService;

public class JmeterDemoAction extends AbstractJavaSamplerClient {
    
    ApplicationContext context = null;
    public DemoService demoService = null;
    
    public void setupTest(JavaSamplerContext arg0) {
        context = new ClassPathXmlApplicationContext("applicationConsumer.xml");
        ((AbstractApplicationContext) context).start();
        demoService = (DemoService) context.getBean("demoService");
    }
        
    @Override
    public SampleResult runTest(JavaSamplerContext arg0) {
        SampleResult sr = new SampleResult();
        
        try {    
            sr.sampleStart();
            // 将Request内容输出到Jmeter-查看结果树的请求页面
            sr.setSamplerData("From consumer: Hello, how much is the current time?");
            sr.setDataType(SampleResult.TEXT);
            // 调用provider的demoService.sayHello方法
            String response = demoService.sayHello("Hello, how much is the current time?");
            // 填写Jmeter-查看结果树的取样器结果
            sr.setResponseCodeOK();
            sr.setResponseMessage("Java Sampler Response is done. ");
            // 将Response内容输出到Jmeter-查看结果树的响应数据页面
            sr.setResponseData("From provider: " + response, "utf-8");
            sr.setDataType(SampleResult.TEXT);
            // 标记成功,并停止采样
            sr.setSuccessful(true);
            sr.sampleEnd();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sr;
    }
    
    @SuppressWarnings("deprecation")
    public void teardownTest(JavaSamplerContext arg0) {
        if(null != context){
        ((AbstractApplicationContext) context).destroy();
        }
    }
    
    /*
    // 供调试使用;打包前记得注释掉 main 方法
    public static void main(String[] args) {
        JmeterDemoAction test = new JmeterDemoAction();
        test.setupTest(null);
        test.runTest(null);
        test.teardownTest(null);
        System.exit(0);        
    }
    */
}

这样就完成了jmeter的消费端代码编写。

 

四、Maven Install打包消费端工程

在执行Maven Install的时候,可能会提示有多个版本的 log4j 依赖包,产生了冲突。于是修改POM.xml文件:

  <!-- https://mvnrepository.com/artifact/com.github.sgroschupf/zkclient -->
  <dependency>
    <groupId>com.github.sgroschupf</groupId>
       <artifactId>zkclient</artifactId>
       <version>0.1</version>
       <exclusions>
           <exclusion>
               <groupId>log4j</groupId>
               <artifactId>log4j</artifactId>
           </exclusion>
       </exclusions>
    </dependency>
        
    <dependency>
    <groupId>org.apache.zookeeper</groupId>
    <artifactId>zookeeper</artifactId>
    <version>3.4.12</version>
      <exclusions>
        <exclusion>
          <groupId>log4j</groupId>
          <artifactId>log4j</artifactId>
        </exclusion>
        <exclusion>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-log4j12</artifactId>
      </exclusion>
    </exclusions>
    </dependency>

如果提示我们正在使用JRE而非JDK进行编译,则在POM.xml中添加JDK的路径,要到 javac:

    <plugin> 
        <groupId>org.apache.maven.plugins</groupId> 
        <artifactId>maven-compiler-plugin</artifactId> 
        <version>3.1</version> 
        <configuration> 
            <verbose>true</verbose> 
            <fork>true</fork> 
        <executable>C:\Program Files\Java\jdk1.8.0_172\bin\javac</executable> 
    </configuration> 
    </plugin> 

打包完成后可以看到消费端的target下生成了两个文件:
一个demo_dubbo_comsumer-0.0.1-SNAPSHOT.jar;
一个demo_dubbo_comsumer-0.0.1-SNAPSHOT-assembly.tar.gz。

 

-      创建一个新的dependency-demo_dubbo_consumer文件夹;复制consumer-0.0.1-SNAPSHOT-assembly.tar.gz中的lib文件夹下所有的jar包文件,

  解压到dependency-demo_dubbo_consumer文件夹下,然后将此文件夹拷贝到jmeter的lib目录下。

-      将consumer-0.0.1-SNAPSHOT.jar拷贝到jmeter的lib/ext目录下。

 

由于在这个Demo中,我没有打包服务提供方的工程,因此Jmeter模拟消费方的执行过程中,在Eclipse中Provider工程的main方法要保持运行。

在Dubbo-Admin页面查看的情况如下:

五、创建Jmeter模拟的消费方测试脚本

1. 引用测试依赖的jar文件

测试计划 – Add directory or jar to classpath - 点击浏览、定位到dependency-demo_dubbo_consumer文件夹,之后按Enter键就可以全部引入到classpath中。

    

2. 创建一个Java请求

添加一个线程组、添加Sampler – Java Sampler;选中刚刚编写的consumer.JmeterDemoAction:

   

3. 添加结果查看器

添加监听器:结果查看器、聚合报告。

 

 4. 简单的执行

修改线程组的设置:

希望以20个线程启动执行,循环10次:

   

5. 查看执行结果

查看聚合报告:

  

查看结果树:

  

  

  

 

 在Dubbo-Admin页面查看到如下:

由于脚本中做了优化,不会过多创建消费方,可以放心食用。

 

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