dubbo例子demo

搭建简单的dubbo项目，步骤如下：

一，搭建父工程，再搭建子工程。如图：

1，新建父工程，Packing 选择pom方式

2，新建子工程test-api

在父工程处，右键 maven - new maven module project :

如上，再建立其他子项目。

3，父工程pom.xml添加jar包，如下：

<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.luo</groupId>
    <artifactId>test-parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>pom</packaging>
    <build />
    <properties>
        <motan.version>0.3.0</motan.version>
        <!-- 在阿里巴巴内部广泛使用的GA版本为：2.4.9，强烈推荐此版本 -->
        <dubbo.version>2.5.3</dubbo.version>
        <dubbox.version>2.8.4</dubbox.version>
        <spring.version>4.3.6.RELEASE</spring.version>
        <java.version>1.7</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <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>
        <!-- spring相关 -->
        <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>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${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-aop</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-orm</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jms</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>1.6.11</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.6.11</version>
        </dependency>
    </dependencies>
    <modules>
        <module>test-api</module>
        <module>test-consumer</module>
        <module>test-provider</module>
    </modules>
</project>

4，api项目添加：

package com.luo;

import java.util.List;

import com.luo.domain.User;

public interface DemoService {
    String sayHello(String name);  
    List<User> getUser();
}

package com.luo.domain;

import java.io.Serializable;

public class User  implements Serializable {
    int id;
    String name;
    int age;

    public User(int id, String name, int age) { super(); this.id = id; this.name = name; this.age = age; } public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } }

结构如图：

5，provider:实现接口DemoService：

package com.luo;

import java.util.ArrayList;
import java.util.List;

import org.springframework.stereotype.Service;

import com.luo.domain.User;
@Service("demoService") public class DemoServiceImpl implements DemoService { public String sayHello(String name) { return name; } public List<User> getUser() { List<User> list = new ArrayList<User>(); for (int i = 0; i < 3; i++) { User user = new User(i, "name" + i, i); list.add(user); } return list; } }

dubbo-provider.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">

    <!-- 提供方应用信息，用于计算依赖关系 -->
    <dubbo:application name="dubbo_provider" />

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

    <!-- 用dubbo协议在20880端口暴露服务 -->
    <dubbo:protocol name="dubbo" port="20880" />

    <!-- 声明需要暴露的服务接口 -->
    <dubbo:service interface="com.luo.DemoService" ref="demoService" />
    <!-- 使用注解方式暴露接口 -->
    <!-- <dubbo:annotation package="com.luo.DemoService" /> -->
</beans>

springmvc.xml：

<?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">

    <aop:aspectj-autoproxy />
    <context:component-scan base-package="com.luo" />
    <import resource="classpath:dubbo-provider.xml" />
</beans>

测试类Test：

package com.test;

import java.io.IOException;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Test {
    public static void main(String[] args) throws Exception {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("classpath:springmvc.xml"); context.start(); System.out.println("Dubbo provider start..."); try { System.in.read(); // 按任意键退出 } catch (IOException e) { e.printStackTrace(); } } }

结构如图：

6，项目consumer

dubbo-consumer.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 ">          
    <!-- 消费方应用名，用于计算依赖关系，不是匹配条件，不要与提供方一样 -->    
    <dubbo:application name="dubbo_consumer" />       
      <!-- 使用multicast广播注册中心暴露发现服务地址 -->    
    <dubbo:registry  protocol="zookeeper" address="zookeeper://127.0.0.1:2181" />         
      <!-- 生成远程服务代理，可以和本地bean一样使用demoService -->    
    <dubbo:reference id="demoService" interface="com.luo.DemoService" />    
</beans>

springmvc.xml：

<?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">

    <aop:aspectj-autoproxy />
    <context:component-scan base-package="com.luo" />
    <import resource="classpath:/dubbo-consumer.xml" />
</beans>

测试类Test：

package com.test;

import java.io.IOException;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.alibaba.dubbo.config.annotation.Reference;
import com.luo.DemoService;

public class Test { public static void main(String[] args) { ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "classpath:springmvc.xml" }); context.start(); DemoService demoService = (DemoService) context.getBean("demoService"); System.out.println(demoService.sayHello("哈哈哈")); System.out.println(demoService.getUser()); try { System.in.read(); } catch (IOException e) { e.printStackTrace(); } } }

结构如图：

7，下载zookeeper，然后进入bin,找到zkServer.cmd，双击运行。参考：https://blog.csdn.net/jingyangv587/article/details/78901508

8，运行provider的Test类：

9，运行consumer的Test类：

二、admin平台管理

参考：https://blog.csdn.net/jingyangv587/article/details/78904369

提供者：

消费者：

三、搭建web项目。

1、搭建子项目test-web，create simple...不选，next，如图：

选择webapp这个，然后创建。

2、会报错，根据错误提示，搜索然后修复好。

3，参照上面和 https://www.cnblogs.com/luoa/articles/9727008.html，把项目做成spring mvc,并把一些文件抄过来，其中，注意修改web.xml。

HelloController：

package com.aluo.controller;

import javax.annotation.Resource;

import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;

import com.alibaba.dubbo.config.annotation.Reference; import com.luo.DemoService; @Controller public class HelloController { @Resource(name="demoService") private DemoService demoService; @RequestMapping("/welcome") public String welcome(ModelMap model) { System.out.println("begin"); System.out.println(demoService.getUser()); model.addAttribute("message", demoService.sayHello("hello dubbo")); return "welcome"; } }

结构如图：

4，运行zookeeper，和provider，再把项目加入tomcat运行，访问 http://localhost:8080/test-web/welcome，如图：

整个项目结构图：

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