dubbo简单实现

一、配置zk

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1、安装zk 下载地址http://www.apache.org/dyn/closer.cgi/zookeeper/

下载ZK后解压，然后进行启动。此处的zk部署在192.168.0.190机器上，使用默认端口2181

2、启动zk

1. bin/zkServer.sh start

3、测试zk是否启动

1. bin/zkCli.sh -server 192.168.0.190:2181

出现  Welcome to ZooKeeper! 启动成功

 二、新建服务端项目

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1、新建项目  dubboProvide 配置服务端

pom.xml 配置如下

1. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
2. xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
3. <modelVersion>4.0.0modelVersion>
5. <groupId>dubboProvidegroupId>
6. <artifactId>dubbo-providerDemoartifactId>
7. <version>0.0.1-SNAPSHOTversion>
8. <packaging>jarpackaging>
10. <properties>
11. <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
12. properties>
14. <dependencies>
15. <dependency>
16. <groupId>com.alibabagroupId>
17. <artifactId>dubboartifactId>
18. <version>2.4.10version>
19. <exclusions>
20. <exclusion>
21. <groupId>org.springframeworkgroupId>
22. <artifactId>springartifactId>
23. exclusion>
24. exclusions>
25. dependency>
26. <dependency>
27. <groupId>com.101tecgroupId>
28. <artifactId>zkclientartifactId>
29. <version>0.4version>
30. dependency>
31. <dependency>
32. <groupId>org.springframeworkgroupId>
33. <artifactId>spring-contextartifactId>
34. <version>3.2.8.RELEASEversion>
35. dependency>
36. <dependency>
37. <groupId>org.springframeworkgroupId>
38. <artifactId>spring-coreartifactId>
39. <version>3.2.8.RELEASEversion>
40. dependency>
41. <dependency>
42. <groupId>org.springframeworkgroupId>
43. <artifactId>spring-beansartifactId>
44. <version>3.2.8.RELEASEversion>
45. dependency>
46. <dependency>
47. <groupId>junitgroupId>
48. <artifactId>junitartifactId>
49. <version>4.12version>
50. <scope>testscope>
51. dependency>
52. <dependency>
53. <groupId>org.springframeworkgroupId>
54. <artifactId>spring-testartifactId>
55. <version>3.2.8.RELEASEversion>
56. <scope>testscope>
57. dependency>
59. dependencies>
60. project>

spring-dubbo-provide.xml配置如下

1. xml version="1.0" encoding="UTF-8"?>
2. <beans xmlns="http://www.springframework.org/schema/beans"
3. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4. xmlns:jee="http://www.springframework.org/schema/jee"
5. xmlns:tx="http://www.springframework.org/schema/tx"
6. xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
7. xmlns:context="http://www.springframework.org/schema/context"
8. xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
9. http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
10. http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.1.xsd
11. http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd
12. http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd"
13. default-lazy-init="false" >
15. <dubbo:application name="dubboProvide" />
18. <dubbo:registry address="zookeeper://192.168.0.190:2181" />
21. <dubbo:protocol name="dubbo" port="20880" />
24. <dubbo:service interface="com.lin.provider.DemoService" ref="demoServiceImpl" />
27. <bean id="demoServiceImpl" class="com.lin.provider.DemoServiceImpl" />
29. beans>

DemoServcie 如下：

1. package com.lin.provider;
3. public interface DemoService {
5. public String sayHello(String name);
7. }

DemoServiceImpl 如下：

1. package com.lin.provider;
4. public class DemoServiceImpl implements DemoService{
6. @Override
7. public String sayHello(String name) {
8. return "Hello Dubbo,Hello " + name;
9. }
11. }

服务端配置完毕，接下来启动项目，提供接口

Provider  如下：

1. package com.lin.provider;
3. import org.springframework.context.support.ClassPathXmlApplicationContext;
4. public class Provider {
6. public static void main(String[] args) throws Exception {
8. ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[] {"spring-dubbo-provider.xml"});
9. context.start();
11. System.out.println("---开启端口-----");
13. System.in.read(); // 按任意键退出
14. }
16. }

运行main方法，提供接口；此时服务端启动完毕。消费者就可以调用这个暴露的接口。

2、新建dubboCustom项目，实现消费者调用服务端。

pom.xml如上。

spring-dubbo-custoom.xml如下：

1. xml version="1.0" encoding="UTF-8"?>
2. <beans xmlns="http://www.springframework.org/schema/beans"
3. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4. xmlns:jee="http://www.springframework.org/schema/jee"
5. xmlns:tx="http://www.springframework.org/schema/tx"
6. xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
7. xmlns:context="http://www.springframework.org/schema/context"
8. xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
9. http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
10. http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.1.xsd
11. http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd
12. http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd"
13. default-lazy-init="false" >
15. <dubbo:application name="dubboCustom" />
18. <dubbo:registry address="zookeeper://192.168.0.190:2181" />
21. <dubbo:protocol name="dubbo" port="20880" />
24. <dubbo:reference id="demoServiceImpl" interface="com.lin.provider.DemoService" />
26. beans>

消费者测试类，custom类如下：

1. package dubboCustom;
3. import org.springframework.context.support.ClassPathXmlApplicationContext;
5. import com.lin.provider.DemoService;
8. public class Custom {
10. public static void main(String[] args) throws Exception {
11. ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
12. new String[] { "spring-dubbo-custom.xml" });
13. context.start();
15. DemoService demoService = (DemoService) context.getBean("demoServiceImpl"); //
16. String hello = demoService.sayHello("lin"); // ִ
17. System.out.println(hello); //
19. System.in.read();
20. }
22. }

运行main方法，可以看到，控制台输出

1. log4j:WARN No appenders could be found for logger (org.springframework.core.env.StandardEnvironment).
2. log4j:WARN Please initialize the log4j system properly.
3. Hello Dubbo,Hello tom

调用成功！。