该demo只是简单的集成,包括了5个工程(都是maven结构的),如下图所示:
服务端:
dubbo-demo-server-api :服务接口定义工程
dubbo-demo-server-biz :服务接口实现工程
web-dubbo-server:服务接口发布工程
客户端:
dubbo-demo-client-biz :客户端调用接口业务处理工程
web-dubbo-client :客户端web工程
首先先在api工程(dubbo-demo-server-api )定义服务接口。
package org.zhq.dubbo.demo.server.api;
/**
* 服务接口
* @author zhq
*
*/
public interface IDubboDemoServerService {
public static final String BEAN_ID="dubboDemoServerServiceImpl";
/**
* say hello + msg
* @param msg
* @return
*/
String hello(String msg);
}
然后在api的实现工程(dubbo-demo-server-biz )进行接口实现
package org.zhq.dubbo.server.dubbo_demo_server_biz;
import org.springframework.stereotype.Service;
import org.zhq.dubbo.demo.server.api.IDubboDemoServerService;
/**
* 接口服务实现类
* @author zhq
*
*/
@Service(IDubboDemoServerService.BEAN_ID)
public class DubboDemoServerServiceImpl implements IDubboDemoServerService{
@Override
public String hello(String msg) {
String outMsg="Hello "+msg;
System.out.println(outMsg);
return outMsg;
}
}
再进行dubbo和zookeeper配置,引入dubbo和zookeeper的mavn包
<!-- 引入dubbo和zookeepr -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.5.3</version>
</dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.4.6</version>
</dependency>
<dependency>
<groupId>com.github.sgroschupf</groupId>
<artifactId>zkclient</artifactId>
<version>0.1</version>
</dependency>
接口发布配置
<?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:jee="http://www.springframework.org/schema/jee"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.1.xsd
http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd"
default-lazy-init="false" >
<context:component-scan base-package="org.zhq"></context:component-scan>
<!-- 提供方应用名称信息,这个相当于起一个名字,我们dubbo管理页面比较清晰是哪个应用暴露出来的 -->
<dubbo:application name="dubbo_provider"></dubbo:application>
<!-- 使用zookeeper注册中心暴露服务地址 -->
<dubbo:registry address="zookeeper://127.0.0.1:2181" check="false" subscribe="false" register=""></dubbo:registry>
<!-- 要暴露的服务接口 -->
<dubbo:service interface="org.zhq.dubbo.demo.server.api.IDubboDemoServerService" ref="dubboDemoServerServiceImpl" />
</beans>
配置说明
dubbo:registry 标签一些属性的说明:
1)register 向该注册中心注册服务,如果设为false,将只订阅,不注册。
2)check 该注册中心不存在时,是否报错。
3)subscribe 是否向此注册中心订阅服务,如果设为false,将只注册,不订阅。
4)timeout 注册中心请求超时时间(毫秒)。
5)address 可以Zookeeper集群配置,地址可以多个以逗号隔开等。就是我们上一章配置的zookeeper服务地址
dubbo:service标签的一些属性说明:
1)interface 服务api接口的路径,包括接口类名称。
2)ref 引用对应的实现类的Bean的ID
3)registry 向指定注册中心注册,在多个注册中心时使用,值为<dubbo:registry>的id属性,多个注册中心ID用逗号分隔,如果不想将该服务注册到任何registry,可将值设为N/A
4)register 默认true ,该协议的服务是否注册到注册中心。
代码位置示图:
在web-dubbo-server应用引用实现工程,这样服务应用基本就已经开发完毕。
客户端业务类调用接口服务实现
在工程(dubbo-demo-client-biz )引入dubbo和zookeeper和api工程
配置消费
<?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:jee="http://www.springframework.org/schema/jee"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.1.xsd
http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd"
default-lazy-init="false" >
<context:component-scan base-package="org.zhq"></context:component-scan>
<!-- 提供方应用名称信息,这个相当于起一个名字,我们dubbo管理页面比较清晰是哪个应用暴露出来的 -->
<dubbo:application name="dubbo_provider"></dubbo:application>
<!-- 使用zookeeper注册中心暴露服务地址 -->
<dubbo:registry address="zookeeper://127.0.0.1:2181" check="false" subscribe="false" register=""></dubbo:registry>
<!-- 要暴露的服务接口 -->
<dubbo:service interface="org.zhq.dubbo.demo.server.api.IDubboDemoServerService" ref="dubboDemoServerServiceImpl" />
</beans>
调用类实现
package org.zhq.dubbo.server.dubbo_demo_server_biz;
import org.springframework.stereotype.Service;
import org.zhq.dubbo.demo.server.api.IDubboDemoServerService;
/**
* 接口服务实现类
* @author zhq
*
*/
@Service(IDubboDemoServerService.BEAN_ID)
public class DubboDemoServerServiceImpl implements IDubboDemoServerService{
@Override
public String hello(String msg) {
String outMsg="Hello "+msg;
System.out.println(outMsg);
return outMsg;
}
}
we-dubbo-client
引入业务实现调用工程
spring-mvc的controller实现调用
package org.zhq.dubbo.common.portal.controller;
import java.util.HashMap;
import java.util.Map;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.zhq.dubbo.demo.client.biz.DubboDemoServerClientBiz;
/**
* 测试控制器类
* @author zhq
*
*/
@Controller
@RequestMapping(value = "/dubboDemoClientController")
public class DubboDemoClientController {
/* @Resource(name=IDubboDemoServerService.BEAN_ID)
private IDubboDemoServerService dubboDemoServerService;*/
//测试通过业务类来调用,也可以直接用上面的api接口直接调用
@Resource(name=DubboDemoServerClientBiz.BEAN_ID)
private DubboDemoServerClientBiz dubboDemoServerClientBiz;
/**
* @param request
* @param response
* @return
*/
@RequestMapping(value = "/helloDemo.do")
public @ResponseBody Map<String,Object> hello(HttpServletRequest request, HttpServletResponse response){
Map<String,Object> resultData = new HashMap<String,Object>();
// String msg=dubboDemoServerService.hello("world");
String msg=dubboDemoServerClientBiz.sayHelloMsg("world");
resultData.put("msg", msg);
return resultData;
}
}
启动web-dubbo-server和web-dubbo-client工程
访问http://localhost:8099/dubboClient/dubboDemoClientController/helloDemo.do
可以看到调用成功,服务访问Hello world字符串
dubbo-admin监控后台效果
提供者
消费者
完整工程代码下载:
链接:http://pan.baidu.com/s/1nuF30DV 密码:pcam