Dubbo接口抽取

1. Dubbo接口抽取

new maven project -->
new simple maven project -->
Group Id：com.andrew
Artifact Id: dubbo-demo-parent
Version: 0.0.1-SNAPSHOT
Packaging：pom

dubbo-demo-parent项目

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-parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>pom</packaging>

    <!-- 依赖版本管理 -->
    <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>

    <!-- 依赖管理 仅仅定义 -->
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.andrew</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>

dubbo-demo-api项目

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

package com.andrew.service;
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.andrew</groupId>
  <artifactId>dubbo-demo-api</artifactId>
  <version>0.0.1-SNAPSHOT</version>
</project>

dubbo-demo-provider项目

src/main/java/com/andrew/service/impl/DemoProviderServiceImpl.java

package com.andrew.service.impl;
import com.andrew.service.DemoProviderService;
public class DemoProviderServiceImpl implements DemoProviderService {
    public String sayHello(String name) {
        return "服务001:" + name;
    }
}

src/main/resources/dubbo-demo-provider.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">

    <!-- 提供方应用名称，用于计算依赖关系 -->
    <dubbo:application name="demo-provider" />
    
    <!-- 使用zookeeper注册中心暴露服务地址 -->
    <dubbo:registry address="zookeeper://127.0.0.1:2181"/>
    
    <!-- 使用dubbo协议，在20880端口暴露服务 -->
    <dubbo:protocol name="dubbo" port="20880"/>
    
    <!-- service实现类作为本地的一个bean -->
    <bean id="demoProviderService" class="com.andrew.service.impl.DemoProviderServiceImpl"/>
    
    <!-- 声明需要暴露的服务接口 -->
    <dubbo:service interface="com.andrew.service.DemoProviderService" ref="demoProviderService"/>

</beans>

src/test/java/com/andrew/test/ProviderTest.java

package com.andrew.test;
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("服务提供者注册成功(端口：20880)");
        try {
            System.in.read();
        } catch (IOException e) {
            e.printStackTrace();
        }
        context.close();
    }
}

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>
    <parent>
        <groupId>com.andrew</groupId>
        <artifactId>dubbo-demo-parent</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <artifactId>dubbo-demo-provider</artifactId>

    <dependencies>
        <dependency>
            <groupId>com.andrew</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-consumer项目

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();
    }
}

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>
    <parent>
        <groupId>com.andrew</groupId>
        <artifactId>dubbo-demo-parent</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <artifactId>dubbo-demo-consumer</artifactId>

    <dependencies>
        <dependency>
            <groupId>com.andrew</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>

启动ProviderTest.java
服务提供者注册成功(端口：20880)

启动ConsumerTest.java
远程调用的结果：服务001:你好