IDEA下将dubbo简单项目跑Demo(2019.12版)
项目架构(聚合项目,父子模块)
- src没用,所以删去
- 选择maven项目,不用勾选模板骨架,直接main方法,因为不用到服务器
- 顺序是按照:添加pom依赖-接口实现类-配置文件
项目环境
- IDE:IntelliJ IDEA15.0.6
- JDK:1.8.0_161
- 项目管理工具:Maven项目(没勾选quickstart等模板)
- Spring: 4.3.21
- dubbo:2.5.3
1、首先创建父模块dubbo-parent
其中pom.xml的内容如下:
<?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.zrl</groupId>
<artifactId>dubbo-parent</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<modules>
<module>dubbo-commons</module>
<module>dubbo-provider</module>
<module>dubbo-consumer</module>
</modules>
</project>
2、创建公共子模块 dubbo-commons
1.pom.xml为
<?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">
<parent>
<artifactId>dubbo-parent</artifactId>
<groupId>com.zrl</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>dubbo-commons</artifactId>
</project>
2.创建com.zrl.service下UserService.java
package com.zrl.service;
/**
* Created by Roni on 2019/12/2.
*/
public interface UserService {
public String sayHello(String msg);
}
3、服务提供者 dubbo-provider
1.pom.xml
<?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">
<parent>
<artifactId>dubbo-parent</artifactId>
<groupId>com.zrl</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>dubbo-provider</artifactId>
<dependencies>
<!-- 依赖公共模块 -->
<dependency>
<groupId>com.zrl</groupId>
<artifactId>dubbo-commons</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<!-- 引入Spring的依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.21.RELEASE</version>
</dependency>
<!-- 引入日志的依赖 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.25</version>
</dependency>
<!-- 引入dubbo框架(服务端、客户端通用) -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.5.3</version>
<exclusions>
<exclusion>
<artifactId>spring</artifactId>
<groupId>org.springframework</groupId>
</exclusion>
</exclusions>
</dependency>
<!-- 因为dubbo服务端需要注册服务到zk中,因此依赖zkClient包 -->
<dependency>
<groupId>com.github.sgroschupf</groupId>
<artifactId>zkclient</artifactId>
<version>0.1</version>
</dependency>
</dependencies>
</project>
2.com.zrl.service.impl下UserServiceImpl
package com.zrl.service.impl;
import com.zrl.service.UserService;
/**
* Created by Roni on 2019/12/2.
*/
public class UserServiceImpl implements UserService {
public String sayHello(String msg) {
System.out.println("服务端接收:"+msg);
return "你好啊";
}
}
3.java下App类
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
/**
* Created by Roni on 2019/12/2.
*/
public class App {
public static void main(String[] args) throws Exception{
ApplicationContext ac =
new ClassPathXmlApplicationContext("applicationContext.xml");
//挂起当前线程,如果没有该行代码,服务提供者进程会消亡,服务消费者就发现不了提供者了
Thread.currentThread().join();
}
}
4.resources目录下两个配置文件
4.1:applicationContext.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:context="http://www.springframework.org/schema/context"
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://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.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="dubboProvider" />
<!-- 使用zookeeper注册中心暴露服务地址 (*可修改其中的dubbo:registry,替换成真实的注册中心地址) -->
<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" />
<!-- 启用monitor模块 -->
<dubbo:monitor protocol="registry" />
<bean id="userService" class="com.zrl.service.impl.UserServiceImpl" />
<!-- 声明需要暴露的服务接口 -->
<dubbo:service interface="com.zrl.service.UserService" ref="userService"
group="dubbo" version="1.0.0" timeout="3000"/>
</beans>
4.2:log4j.properties:
log4j.rootLogger=INFO,A1
log4j.appender.A1=org.apache.log4j.ConsoleAppender
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
4、服务消费者 dubbo-consumer
1.pom.xml
<?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">
<parent>
<artifactId>dubbo-parent</artifactId>
<groupId>com.zrl</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>dubbo-consumer</artifactId>
<dependencies>
<!-- 依赖公共模块 -->
<dependency>
<groupId>com.zrl</groupId>
<artifactId>dubbo-commons</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<!-- 依赖Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.21.RELEASE</version>
</dependency>
<!-- log4j的依赖 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.25</version>
</dependency>
<!-- 引入dubbo框架(服务端、客户端通用) -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.5.3</version>
<exclusions>
<exclusion>
<artifactId>spring</artifactId>
<groupId>org.springframework</groupId>
</exclusion>
</exclusions>
</dependency>
<!-- 因为dubbo服务端需要注册服务到zk中,因此依赖zkClient包 -->
<dependency>
<groupId>com.github.sgroschupf</groupId>
<artifactId>zkclient</artifactId>
<version>0.1</version>
</dependency>
</dependencies>
</project>
2.java下TestConsumer类
import com.zrl.service.UserService;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
/**
* Created by Roni on 2019/12/2.
*/
public class TestConsumer {
public static void main(String[] args) {
ApplicationContext ac =
new ClassPathXmlApplicationContext("applicationContext.xml");
UserService service = ac.getBean(UserService.class);
System.out.println(service.sayHello("hello provider"));
}
}
3.resources目录下两个配置文件
同上顺序:
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
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://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.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="dubboConsumer" />
<!-- 使用zookeeper注册中心暴露发现服务地址,也可以写成 address="zookeeper://127.0.0.1:2181" ;可相互替换-->
<dubbo:registry protocol="zookeeper"
address="127.0.0.1:2181" />
<!-- 启动monitor-->
<dubbo:monitor protocol="registry" />
<!-- 生成远程服务代理,可以和本地bean一样使用demoService -->
<dubbo:reference id="userService" interface="com.zrl.service.UserService"
group="dubbo" version="1.0.0" timeout="3000"/>
</beans>
log4j.rootLogger=INFO,A1
log4j.appender.A1=org.apache.log4j.ConsoleAppender
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
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