Dubbo新手入門例項HelloWorld(zookeeper)
阿新 • • 發佈：2019-01-09
最近剛接觸dubbo,新手入門遇到好多麻煩,網上搜來的入門demo也是各種問題,百般周折自己終於倒騰出來了,與大家共享~
1.建立服務方專案dubbo-server,在pom.xml中構建專案依賴
2.測試介面DemoService和實現類DemoServiceImpl<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.xbz</groupId> <artifactId>dubbo-server</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>server</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <dependencies> <!-- spring begin --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.1.6.RELEASE</version> </dependency> <!-- spring end --> <!-- dubbo begin --> <dependency> <groupId>com.alibaba</groupId> <artifactId>dubbo</artifactId> <version>2.5.3</version> </dependency> <!-- dubbo end --> <!-- 註冊中心zookeeper begin --> <dependency> <groupId>org.apache.zookeeper</groupId> <artifactId>zookeeper</artifactId> <version>3.3.6</version> </dependency> <!-- 註冊中心zookeeper end --> <!-- log begin --> <dependency> <groupId>commons-logging</groupId> <artifactId>commons-logging</artifactId> <version>1.1.1</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.15</version> <exclusions> <exclusion> <groupId>com.sun.jdmk</groupId> <artifactId>jmxtools</artifactId> </exclusion> <exclusion> <groupId>com.sun.jmx</groupId> <artifactId>jmxri</artifactId> </exclusion> <exclusion> <artifactId>jms</artifactId> <groupId>javax.jms</groupId> </exclusion> <exclusion> <artifactId>mail</artifactId> <groupId>javax.mail</groupId> </exclusion> </exclusions> </dependency> <!-- log end --> <!-- other begin --> <dependency> <groupId>org.jboss.netty</groupId> <artifactId>netty</artifactId> <version>3.2.0.Final</version> </dependency> <dependency> <groupId>com.101tec</groupId> <artifactId>zkclient</artifactId> <version>0.8</version> </dependency> <!-- other end --> </dependencies> </project>
package com.xbz.service;
public interface DemoService {
String sayHello(String name);
}
package com.xbz.service.impl; import com.xbz.service.DemoService; public class DemoServiceImpl implements DemoService { public String sayHello(String name) { System.out.println("init : " + name); return "hello " + name; } }
3.applicationProvider.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 "> <dubbo:application name="dubbo-demo" /> <!-- zookeeper註冊中心 --> <dubbo:registry address="zookeeper://127.0.0.1:2181" /> <dubbo:protocol name="dubbo" port="20880" /> <!-- 和本地bean一樣實現服務 --> <bean id="demoService" class="com.xbz.service.impl.DemoServiceImpl" /> <!-- 向註冊中心註冊暴漏服務地址,註冊服務 --> <dubbo:service interface="com.xbz.service.DemoService" ref="demoService" executes="10" /> </beans>
4.服務方主方法ServerMain
package main;
import java.io.IOException;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class ServerMain {
public static void main(String[] args) throws IOException {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext( new String[] { "applicationProvider.xml" });
context.start();
System.out.println("輸入任意按鍵退出 ~ ");
System.in.read();
context.close();
}
}
接下來我們建立客戶端消費方dubbo-client專案
1.建立dubbo-client,在pom.xml中構建專案依賴
<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.xbz</groupId>
<artifactId>dubbo-client</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>client</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<!-- spring begin -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.1.6.RELEASE</version>
</dependency>
<!-- spring end -->
<!-- dubbo begin -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.5.3</version>
</dependency>
<!-- dubbo end -->
<!-- 註冊中心zookeeper begin -->
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.3.6</version>
</dependency>
<!-- 註冊中心zookeeper end -->
<!-- log begin -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.15</version>
<exclusions>
<exclusion>
<groupId>com.sun.jdmk</groupId>
<artifactId>jmxtools</artifactId>
</exclusion>
<exclusion>
<groupId>com.sun.jmx</groupId>
<artifactId>jmxri</artifactId>
</exclusion>
<exclusion>
<artifactId>jms</artifactId>
<groupId>javax.jms</groupId>
</exclusion>
<exclusion>
<artifactId>mail</artifactId>
<groupId>javax.mail</groupId>
</exclusion>
</exclusions>
</dependency>
<!-- log end -->
<!-- other begin -->
<dependency>
<groupId>com.101tec</groupId>
<artifactId>zkclient</artifactId>
<version>0.8</version>
</dependency>
<dependency>
<groupId>com.xbz</groupId>
<artifactId>dubbo-server</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<!-- other end -->
</dependencies>
</project>
2.applicationConsumer.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">
<dubbo:application name="consumer-of-dubbo-demo" />
<dubbo:registry address="zookeeper://127.0.0.1:2181" />
<!-- 向註冊中心訂閱服務 -->
<dubbo:reference id="demoService" interface="com.xbz.service.DemoService" />
</beans> 3.客戶端消費方主方法ClientMain
package main;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.xbz.service.DemoService;
public class ClientMain {
public static void main(String[] args) {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
new String[] { "applicationConsumer.xml" });
context.start();
DemoService service = (DemoService) context.getBean("demoService");
System.out.println(service.sayHello("world"));
context.close();
}
}
客戶端消費方專案結構如下
啟動服務方
啟動成功,執行緒阻塞~
執行客戶端消費方
輸出hello world,呼叫成功 !
此時服務端控制檯輸出如下
