1. 程式人生 > >dubbo(開源分散式服務框架)-demo

dubbo(開源分散式服務框架)-demo

dubbo-demo-api  提供服務者和消費者都需要介面名和方法名才能呼叫

dubbo-demo-consumer  服務消費者(消費者)

dubbo-demo-provider 服務提供者(生產者)

dubbo-demo-parent maven父版本提供者

dubbo-demo-api專案

package com.java1234.service;

/**
 * 服務提供者介面
 * @author Administrator
 *
 */
public interface DemoProviderService {

	public String sayHello(String name);
}



pom.xml
<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.java1234</groupId>
  <artifactId>dubbo-demo-api</artifactId>
  <version>0.0.1-SNAPSHOT</version>
</project>

 

dubbo-demo-consumer(消費者)

 

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
       xmlns="http://www.springframework.org/schema/beans"
       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">

    <!-- 消費方應用名稱,用於計算依賴關係,不是匹配條件,不要與提供方名稱一樣  -->
    <dubbo:application name="demo-consumer"/>

    <!-- 使用zookeeper註冊中心暴露服務地址 -->
    <dubbo:registry address="zookeeper://127.0.0.1:2181"/>

    <!-- 生成遠端服務代理,可以與本地bean一樣使用  check屬性,啟動時候是否檢查 一般設定成false 啟動時候不檢查 -->
    <dubbo:reference id="demoProviderService" check="false" interface="com.java1234.service.DemoProviderService"/>

</beans>

 

import java.io.IOException;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.java1234.service.DemoProviderService;

public class ConsumerTest {

	public static void main(String[] args) {
		ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"dubbo-demo-consumer.xml"});
        context.start();
        DemoProviderService demoProviderService=(DemoProviderService) context.getBean("demoProviderService");
        String result=demoProviderService.sayHello("你好");
        System.out.println("遠端呼叫的結果:"+result);
        try {
			System.in.read();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
        context.close();
	}
}

 

<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>
  <parent>
  	<groupId>com.java1234</groupId>
	<artifactId>dubbo-demo-parent</artifactId>
	<version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>dubbo-demo-consumer</artifactId>
  
  <dependencies>
    <dependency>
		<groupId>com.java1234</groupId>
		<artifactId>dubbo-demo-api</artifactId>
	</dependency>
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>dubbo</artifactId>
    </dependency>
    <dependency>
        <groupId>com.101tec</groupId>
        <artifactId>zkclient</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.curator</groupId>
        <artifactId>curator-framework</artifactId>
    </dependency>
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
    </dependency>
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
    </dependency>
    <dependency>
        <groupId>io.netty</groupId>
	        <artifactId>netty-all</artifactId>
	    </dependency>
	</dependencies>
</project>

dubbo-demo-provider 服務提供者(生產者)

package com.java1234.service.impl;

import com.java1234.service.DemoProviderService;

/**
 * 服務提供者介面實現類
 * @author Administrator
 *
 */
public class DemoProviderServiceImpl implements DemoProviderService{

	public String sayHello(String name) {
		return "服務001"+name;
	}

}

 

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
       xmlns="http://www.springframework.org/schema/beans"
       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">

	<!-- 提供方應用名稱,用於計算依賴關係 -->
    <dubbo:application name="demo-provider" />
    
    <!-- 使用zookeeper註冊中心暴露服務地址 -->
    <dubbo:registry address="zookeeper://127.0.0.1:2181"/>
    
    <!-- 使用dubbo協議,在20880埠暴露服務 -->
    <dubbo:protocol name="dubbo" port="20880"/>
    
    <!-- service實現類作為本地的一個bean -->
    <bean id="demoProviderService" class="com.java1234.service.impl.DemoProviderServiceImpl"/>
    
    <!-- 宣告需要暴露的服務介面 -->
    <dubbo:service interface="com.java1234.service.DemoProviderService" ref="demoProviderService"/>

</beans>

 

import java.io.IOException;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class ProviderTest {

	public static void main(String[] args) {
		ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"dubbo-demo-provider.xml"});
        context.start();
        System.out.println("服務提供者向zookeeper註冊中心註冊服務成功(埠:20880)");
        try {
			System.in.read();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} // press any key to exit
        context.close();
	}
}
<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>
  <parent>
  	<groupId>com.java1234</groupId>
	<artifactId>dubbo-demo-parent</artifactId>
	<version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>dubbo-demo-provider</artifactId>
  
  <dependencies>
  		<dependency>
  			<groupId>com.java1234</groupId>
			<artifactId>dubbo-demo-api</artifactId>
  		</dependency>
	    <dependency>
	        <groupId>com.alibaba</groupId>
	        <artifactId>dubbo</artifactId>
	    </dependency>
	    <dependency>
	        <groupId>com.101tec</groupId>
	        <artifactId>zkclient</artifactId>
	    </dependency>
	    <dependency>
	        <groupId>org.apache.curator</groupId>
	        <artifactId>curator-framework</artifactId>
	    </dependency>
	    <dependency>
	        <groupId>com.alibaba</groupId>
	        <artifactId>fastjson</artifactId>
	    </dependency>
	    <dependency>
	        <groupId>log4j</groupId>
	        <artifactId>log4j</artifactId>
	    </dependency>
	    <dependency>
	        <groupId>org.slf4j</groupId>
	        <artifactId>slf4j-api</artifactId>
	    </dependency>
	    <dependency>
	        <groupId>org.apache.commons</groupId>
	        <artifactId>commons-lang3</artifactId>
	    </dependency>
	    <dependency>
	        <groupId>io.netty</groupId>
	        <artifactId>netty-all</artifactId>
	    </dependency>
	</dependencies>
</project>

dubbo-demo-parent

<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.java1234</groupId>
  <artifactId>dubbo-demo-parent</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>pom</packaging>
 
  <!-- 依賴版本管理  -->
  <properties>
  	<dubbo-demo-api.version>0.0.1-SNAPSHOT</dubbo-demo-api.version>
  	<dubbo.version>2.6.0</dubbo.version>
    <zkclient.version>0.10</zkclient.version>
    <curator-framework.version>4.0.1</curator-framework.version>
    <fastjson.version>1.2.46</fastjson.version>
    <log4j.version>1.2.17</log4j.version>
    <slf4j-api.version>1.7.25</slf4j-api.version>
    <commons-lang3.version>3.4</commons-lang3.version>
    <netty-all.version>4.0.35.Final</netty-all.version>
  </properties>
 
  <!-- 依賴管理 僅僅定義 -->
  <dependencyManagement>
  	<dependencies>
	     <dependency>
              <groupId>com.java1234</groupId>
              <artifactId>dubbo-demo-api</artifactId>
              <version>${dubbo-demo-api.version}</version>
           </dependency>
          <dependency>
              <groupId>com.alibaba</groupId>
              <artifactId>dubbo</artifactId>
              <version>${dubbo.version}</version>
          </dependency>
          <dependency>
              <groupId>com.101tec</groupId>
              <artifactId>zkclient</artifactId>
              <version>${zkclient.version}</version>
          </dependency>
          <dependency>
              <groupId>org.apache.curator</groupId>
              <artifactId>curator-framework</artifactId>
              <version>${curator-framework.version}</version>
          </dependency>
          <dependency>
              <groupId>com.alibaba</groupId>
              <artifactId>fastjson</artifactId>
              <version>${fastjson.version}</version>
          </dependency>
          <dependency>
              <groupId>log4j</groupId>
              <artifactId>log4j</artifactId>
              <version>${log4j.version}</version>
          </dependency>
          <dependency>
              <groupId>org.slf4j</groupId>
              <artifactId>slf4j-api</artifactId>
              <version>${slf4j-api.version}</version>
          </dependency>
          <dependency>
              <groupId>org.apache.commons</groupId>
              <artifactId>commons-lang3</artifactId>
              <version>${commons-lang3.version}</version>
          </dependency>
          <dependency>
              <groupId>io.netty</groupId>
              <artifactId>netty-all</artifactId>
              <version>${netty-all.version}</version>
          </dependency>
	</dependencies>
  </dependencyManagement>
</project>

1.什麼時候用到叢集
併發量大
1.當單臺伺服器扛不住業務請求量的時候;
2.當業務需要7*24小時不間斷服務的時候
dubbo的監控可以檢視叢集 權重 而且可以修改

dubbo叢集只需要在

    <dubbo:protocol name="dubbo" port="20881"/>

   <dubbo:protocol name="dubbo" port="20880"/>

多配置幾個就可以了