消费Dubbo服务

1. 消费Dubbo服务

new maven project -->
new simple maven project -->
Group Id：com.andrew
Artifact Id: dubbo-demo-consumer
Version: 0.0.1-SNAPSHOT
Packaging：War
jdk版本1.8

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.andrew</groupId>
  <artifactId>dubbo-demo-consumer</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  
  <dependencies>
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>dubbo</artifactId>
        <version>2.6.0</version>
    </dependency>
    <dependency>
        <groupId>com.101tec</groupId>
        <artifactId>zkclient</artifactId>
        <version>0.10</version>
    </dependency>
    <dependency>
        <groupId>org.apache.curator</groupId>
        <artifactId>curator-framework</artifactId>
        <version>4.0.1</version>
    </dependency>
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
        <version>1.2.46</version>
    </dependency>
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.25</version>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
        <version>3.4</version>
    </dependency>
    <dependency>
        <groupId>io.netty</groupId>
        <artifactId>netty-all</artifactId>
        <version>4.0.35.Final</version>
    </dependency>
  </dependencies>
</project>

src/main/java/com/andrew/service/DemoProviderService.java

package com.andrew.service;
public interface DemoProviderService {
    public String sayHello(String name);
}

src/main/resources/dubbo-demo-consumer.xml

<?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">

    <!-- 消费方应用名称，用于计算依赖关系，不是匹配条件，不要与提供方名称一样  -->
    <dubbo:application name="demo-consumer"/>

    <!-- 使用zookeeper注册中心暴露服务地址 -->
    <dubbo:registry address="zookeeper://127.0.0.1:2181"/>

    <!-- 生成远程服务代理，可以与本地bean一样使用  check属性，启动时候是否检查 一般设置成false 启动时候不检查 -->
    <dubbo:reference id="demoProviderService" check="false" interface="com.andrew.service.DemoProviderService"/>

</beans>

src/test/java/com/andrew/ConsumerTest.java

package com.andrew;
import java.io.IOException;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.andrew.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("远程调用的结果：" + result);
        try {
            System.in.read();
        } catch (IOException e) {
            e.printStackTrace();
        }
        context.close();
    }
}

运行结果：

运行ConsumerTest.java
远程调用的结果：服务001