maven+dubbo+zookeeper 基础实例

1.maven  引入依赖

<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>Junyang.Li</groupId>
<artifactId>dubboEntryDoor</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>dubboEntryDoor Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<junit-version>4.9</junit-version>
<!--spring + dubbo + zk为构建dubbo的服务必须依赖-->
<spring.version>4.1.4.RELEASE</spring.version>
<dubbo.version>2.5.3</dubbo.version>
<zookeeper.version>3.4.8</zookeeper.version>
<zkclient.version>0.1</zkclient.version>
</properties>

<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>

<!-- dubbo begin -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.6.1</version>
<!-- <exclusions>
<exclusion>
<artifactId>spring</artifactId>
<groupId>org.springframework</groupId>
</exclusion>
</exclusions> -->
</dependency>
<!-- dubbo end -->
<dependency>
<groupId>com.github.sgroschupf</groupId>
<artifactId>zkclient</artifactId>
<version>${zkclient.version}</version>
</dependency>
<!--spring的依赖包   测试可以不用这些包-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.4.6</version>
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.5</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.14</version>
</dependency>
<!----spring结束-->
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-framework</artifactId>
<version>2.9.0</version>
</dependency>

</dependencies>
<build>
<finalName>dubboEntryDoor</finalName>
</build>
</project>

代码示例：

api接口

package dubboEntryDoor.api;
public interface DemoService {
String sayHello(String name);
}

生产者：

package provider;

import dubboEntryDoor.api.DemoService;

public class DemoServiceImpl implements DemoService {
public String sayHello(String name) {
return "Hello " + name;
}
}

<?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">
<!-- 提供方应用信息，用于计算依赖关系 -->
<dubbo:application name="demo-provider"/>
<!-- <dubbo:registry address="multicast://224.5.6.7:1234"/> -->
<!-- 使用zookeeper注册中心暴露服务地址 -->
<dubbo:registry address="zookeeper://127.0.0.1:2181" />
<dubbo:protocol name="dubbo" port="20880"/>
<dubbo:service interface="dubboEntryDoor.api.DemoService" ref="demoService"/>
<bean id="demoService" class="provider.DemoServiceImpl"/>
</beans>

启动生产者：

package provider;

import java.io.IOException;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestProvider {

public static void main(String[] args) throws IOException {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
new String[] {"spring-provider.xml"});
context.start();
// press any key to exit
System.out.println("输入任意键退出");
System.in.read();
}
}

消费者：

<?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="demo-consumer"/>
<!-- <dubbo:registry address="multicast://224.5.6.7:1234"/> -->
<!-- 使用zookeeper注册中心暴露服务地址 -->
<dubbo:registry address="zookeeper://127.0.0.1:2181" />
<dubbo:reference id="demoService" interface="dubboEntryDoor.api.DemoService"/>
</beans>

package consumerTest;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import dubboEntryDoor.api.DemoService;

public class Consumer {
public static void main(String[] args) throws Exception {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
new String[]{"spring-consumer.xml"});
context.start();
// obtain proxy object for remote invocation
DemoService demoService = (DemoService) context.getBean("demoService");
// execute remote invocation
String hello = demoService.sayHello("world");
// show the result
System.out.println(hello);
}
}

zookeeper下载参考：https://jingyan.baidu.com/article/335530dafd4b3619cb41c3d8.html