• dubbo入门


    一、下载zookeeper注册中心

    1. 下载zookeeper压缩包并解压,官网地址:http://www.apache.org/dyn/closer.cgi/zookeeper/
    2. 进入conf目录将 zoo_sample.cfg 改名为 zoo.cfg。
    3. 进入bin目录双击zkServer.cmd,若启动成功,则windows单机版zookeeper搭建成功。

    二、配置dubbo-admin监控中心

    1. 下载dubbo-admin的代码,下载地址:https://github.com/apache/incubator-dubbo-ops
    2. 下载后将其解压,进入如图目录下面。

            3.   使用cmd进入该目录下面,然后执行 mvn package -Dmaven.test.skip=true(安装maven才有效),等待项目打包。

       4.   执行完毕后进入 dubbo-admin目录下面的target目录,会有一个dubbo-admin-0.0.1-SNAPSHOT的jar包。

       5.   cmd进入到jar包所在目录 ,执行  java -jar dubbo-admin-0.0.1-SNAPSHOT.jar 命令(在这一步之前必须开启zookeeper)。

       6.  运行完毕后在浏览器输入 http://127.0.0.1:7001,输入用户名 root 密码 root即可登陆。登陆完成页面如下。

    三、创建dubbo的maven项目。

    1. 创建一个maven父工程,本工程只有一个pom文件,内容如下。

        

    <?xml version="1.0" encoding="UTF-8"?>
    <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.dobbu</groupId>
        <artifactId>dobbutest</artifactId>
        <packaging>pom</packaging>
        <version>1.0-SNAPSHOT</version>
        <modules>
            <module>dubbo-api</module>
            <module>dubbo-provider</module>
            <module>dubbo-consumer</module>
        </modules>
    
        <properties>
            <maven.compiler.source>1.8</maven.compiler.source>
            <maven.compiler.target>1.8</maven.compiler.target>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    
            <spring.version>4.2.5.RELEASE</spring.version>
    
            <slf4j.version>1.7.18</slf4j.version>
    
            <log4j.version>1.2.17</log4j.version>
        </properties>
    
        <dependencyManagement>
            <dependencies>
    
                <dependency>
                    <groupId>junit</groupId>
                    <artifactId>junit</artifactId>
                    <version>4.11</version>
                </dependency>
    
                <dependency>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring-core</artifactId>
                    <version>${spring.version}</version>
                </dependency>
    
                <dependency>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring-aop</artifactId>
                    <version>${spring.version}</version>
                </dependency>
    
                <dependency>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring-context-support</artifactId>
                    <version>${spring.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.version}</version>
                </dependency>
    
                <dependency>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-log4j12</artifactId>
                    <version>${slf4j.version}</version>
                </dependency>
    
                <dependency>
                    <groupId>commons-logging</groupId>
                    <artifactId>commons-logging</artifactId>
                    <version>1.2</version>
                </dependency>
    
                <dependency>
                    <groupId>com.alibaba</groupId>
                    <artifactId>dubbo</artifactId>
                    <version>2.5.3</version>
                    <exclusions>
                        <exclusion>
                            <groupId>org.springframework</groupId>
                            <artifactId>spring</artifactId>
                        </exclusion>
                    </exclusions>
                </dependency>
    
                <dependency>
                    <groupId>com.github.sgroschupf</groupId>
                    <artifactId>zkclient</artifactId>
                    <version>0.1</version>
                </dependency>
            </dependencies>
        </dependencyManagement>
    
    </project>

    2.在上一个maven项目下面见一个maven moudle,这个maven moudle只定义接口。

    3.在创建一个maven moudle来作为 提供者,其目录结构如下。

    DemoServiceImpl.java代码如下

    public class DemoServiceImpl implements DemoService {
        @Override
        public String sayHello(String name) {
            return name;
        }
    }

    dubbo-provider.xml文件内容如下:

    <?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">
    
        <!--设置应用名称-->
        <dubbo:application name="dubbo_provider"/>
        <!--设置注册中心地址-->
        <dubbo:registry address="zookeeper://127.0.0.1:2181"/>
        <!--使用dubbo协议暴露端口-->
        <dubbo:protocol name="dubbo" port="20880"/>
        <!--暴露需要暴漏的接口-->
        <dubbo:service interface="com.dobbu.DemoService" ref="demoService" />
    </beans>

    springmvc.xml文件内容

    <?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop"
           xmlns:context="http://www.springframework.org/schema/context"
           xmlns:util="http://www.springframework.org/schema/util" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
           xsi:schemaLocation="http://www.springframework.org/schema/aop
            http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
            http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
            http://www.springframework.org/schema/context
            http://www.springframework.org/schema/context/spring-context-4.0.xsd
            http://www.springframework.org/schema/util
            http://www.springframework.org/schema/util/spring-util-4.0.xsd
            http://code.alibabatech.com/schema/dubbo
            http://code.alibabatech.com/schema/dubbo/dubbo.xsd"
           >
    
        <bean id="demoService" class="com.dobbu.DemoServiceImpl"/>
    
        <import resource="dubbo-provider.xml"/>
    
    </beans>

    AppTest.java文件内容

    public class AppTest 
    {
       
        @Test
        public void shouldAnswerWithTrue()
        {
            ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("classpath*:springmvc.xml");
            context.start();
    
            System.out.println("Dubbo provider start.....");
    
            try {
                System.in.read();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    4.创建一个maven moudle来充当消费者。其目录结构如下:

     dubbo-consumer.xml内容如下

    <?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-consumer"/>
    
        <dubbo:registry protocol="zookeeper" address="zookeeper://127.0.0.1:2181"/>
    
        <dubbo:reference interface="com.dobbu.DemoService" id="demoService"/>
    </beans>

    springmvc.xml文件内容如下

    <?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop"
           xmlns:context="http://www.springframework.org/schema/context"
           xmlns:util="http://www.springframework.org/schema/util" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="http://www.springframework.org/schema/aop
            http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
            http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
            http://www.springframework.org/schema/context
            http://www.springframework.org/schema/context/spring-context-4.0.xsd
            http://www.springframework.org/schema/util
            http://www.springframework.org/schema/util/spring-util-4.0.xsd"
           default-autowire="byName">
    
        <import resource="dubbo-consumer.xml"/>
    </beans>

    AppTest.java内容如下

    public class AppTest 
    {
        /**
         * Rigorous Test :-)
         */
        @Test
        public void shouldAnswerWithTrue()
        {
            ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("classpath*:springmvc.xml");
    
            context.start();
    
            DemoService demoService = (DemoService) context.getBean("demoService");
    
            System.out.println(demoService.sayHello("hhh"));
    
            try {
                System.in.read();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    四、测试项目

      首先运行dubbo-provider项目的AppTest的测试方法,执行后可以在dobbu-admin监控页面看见该提供者。如图则表示服务已经注册。

     运行dubbo-consumer的AppTest类的方法。会在控制台输出如下消息,并且在消费者里面可以查看到该服务。

       

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  • 原文地址:https://www.cnblogs.com/jack1995/p/9378370.html
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