分布式服务框架Dubbo入门案例和项目源码

本项目源代码：http://download.csdn.net/detail/fansunion/9498406


Dubbo是一个分布式服务框架，致力于提供高性能和透明化的RPC远程服务调用方案，

是阿里巴巴SOA服务化治理方案的核心框架，每天为2,000+个服务提供3,000,000,000+次访问量支持，并被广泛应用于阿里巴巴集团的各成员站点。
官方网站： http://dubbo.io/
本项目代码，根据官方提供的dubbo-ws-demo-master例子，改造而来。
官网例子源码：https://github.com/dubbo/dubbo-ws-demo

官方的例子，都放在1个项目中，接口、实现类、Java应用测试例子。

自己给改造了下，方便在项目中直接使用。
虽说是HelloWorld，也还是要向实际情况靠拢。

3个项目

1.web-service接口项目， 定义接口和供调用放引入的dubbo配置。



接口HelloService

package com.dubbo.demo;
public interface HelloService {
String hello(String name);
}

接口定义的dubbo配置
spring-dubbo.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/beanshttp://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="ws-demo" />
<dubbo:registry address="N/A" />
<dubbo:reference id="helloService" interface="com.dubbo.demo.HelloService" version="1.0.0"
url="webservice://127.0.0.1:9000/com.dubbo.demo.HelloService"/>
</beans>

maven配置
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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion>
<groupId>com.shop</groupId>
<version>1.0.0-SNAPSHOT</version>
<name>web-service</name>
<url>http://maven.apache.org</url>;
<dependencies>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.4.10</version>
</dependency>

<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-frontend-simple</artifactId>
<version>2.6.1</version>
</dependency>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-transports-http</artifactId>
<version>2.6.1</version>
</dependency>

</dependencies>
<build>
<finalName>web-service</finalName>

<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>

</plugins>
</build>
<artifactId>web-service</artifactId>
</project>

2.web-service-impl接口实现项目


接口实现类HelloServiceImpl

package com.dubbo.demo.impl;

import com.dubbo.demo.HelloService;

public class HelloServiceImpl implements HelloService {
@Override
public String hello(String name) {
return "Hello, " + name + "!";
}
}

接口实现dubbo配置
spring-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/beanshttp://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="ws-demo" />

<dubbo:registry address="N/A" />

<dubbo:protocol name="webservice" port="9000" server="servlet" />

<bean id="helloService" class="com.dubbo.demo.impl.HelloServiceImpl"/>

<dubbo:service interface="com.dubbo.demo.HelloService" version="1.0.0"
protocol="webservice" ref="helloService"/>
</beans>

Maven配置

<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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion>
<groupId>com.shop</groupId>
<artifactId>web-service-impl</artifactId>
<packaging>war</packaging>
<version>1.0.0-SNAPSHOT</version>
<name>dubbo-ws Maven Webapp</name>
<url>http://maven.apache.org</url>;
<dependencies>

<dependency>
<groupId>com.shop</groupId>
<artifactId>web-service</artifactId>
<version>1.0.0-SNAPSHOT</version>
</dependency>

</dependencies>
<build>
<finalName>web-service-impl</finalName>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>

</plugins>
</build>
</project>

web.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">

<display-name>web-service</display-name>

<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath*:spring-context.xml
</param-value>
</context-param>

<servlet>
<servlet-name>dubbo</servlet-name>
<servlet-class>
com.alibaba.dubbo.remoting.http.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dubbo</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
</web-app>

3.接口测试（调用方）项目



接口调用代码

import com.dubbo.demo.HelloService;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class ConsumerMain {
public static void main(String[] args) {
ClassPathXmlApplicationContext classPathXmlApplicationContext = new ClassPathXmlApplicationContext("spring-dubbo.xml");
classPathXmlApplicationContext.start();

HelloService helloService = (HelloService) classPathXmlApplicationContext.getBean("helloService");
String world = helloService.hello("World");

System.out.println("=====================================");
System.out.println(world);
System.out.println("=====================================");
}
}

maven配置
类似上面的

Web程序访问
ConsumerMain是通过应用程序的方式，访问Dubbo包装的服务。
而

@Controller
@RequestMapping("")
public class HelloWorldController {

@Autowired
private HelloService helloService;

@ResponseBody
@RequestMapping("hello")
public String hello(){
return helloService.hello("hi dubbo");
}

}

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">

<display-name>web-service-test</display-name>

<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath*:spring-context.xml
</param-value>
</context-param>

<servlet>
<servlet-name>springMvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-mvc-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springMvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>

4.项目测试
a.启动服务项目
web-service-imp


b.启动Java应用程序ConsumerMain，打印结果。


c.启动Web应用程序web-service-test，访问http://localhost:9080/hello



本项目源代码：http://download.csdn.net/detail/fansunion/9498406