dubbo+zookeeper实战01

桃扇骨 2022-06-06 11:37 171阅读 0赞

近期受SOA影响（ps:各大软件公司招聘官网上陆续出现服务治理、rpc框架、SOA等字眼），于是乎研究起来了dubbo（阿里巴巴产品，最早提出的SOA理念）。

废话少说，不如正题。分别创建两个web工程 dubbo-client、dubbo-server

dubbo-client工程所需jar，即为dubbo-admin lib下的所有jar

ps：之前用的另外一套jar导致消费者调用报错（rpc异常）后来才发现是jar包问题。

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dubbo-server工程所需jar

![Center 1][]![Center 2][]![Center 3][]

先注册【提供者】

applicationProvider.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 ">
        <dubbo:application name="dubbo-demo" />
        
        <dubbo:registry address="zookeeper://10.143.184.56:2181" group="dubbo" id="myjhd_id"/>
        <dubbo:protocol name="dubbo" port="20880" />
       
        
        <bean id="demoService" class="com.ardo.dubbo.service.impl.DemoServiceImpl" />
     
        
        <dubbo:service interface="com.ardo.dubbo.service.DemoService"
           ref="demoService" executes="10" />
    </beans>

提供者测试类：Test.java

public class Test {
        public static void main(String[] args) throws IOException {
           System.out.println("注册提供者");
            ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("applicationProvider.xml");
            System.out.println(context.getDisplayName() + ": here");
            context.start();
            System.out.println("服务已经启动...");
            System.in.read();
        }
    }

右键run as服务后即可调用提供者服务

结构图：

![Center 4][]

【消费者】

applicationConsumer.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">
        <dubbo:application name="consumer-of-dubbo-demo" />
     
        <dubbo:registry address="zookeeper://10.143.184.56:2181" group="dubbo" id="myjhd_id" timeout="30000"/>
     
        
        <dubbo:reference id="demoService" interface="com.ardo.dubbo.service.DemoService" check="false" timeout="12000" />
    </beans>

消费者测试类（调用方法）

public class ClientMain {
        public static void main(String[] args) {
           try {
               ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
                      new String[] { "applicationConsumer.xml" });
               context.start();
               DemoService service = (DemoService) context.getBean("demoService");
               //DemoService service = (DemoService) context.getBean(DemoService.class);
               System.out.println(service.sayHello(" ardo world"));
               context.close();
               //while (true) {} //由于消费者用完后就关闭连接，admin平台看不到消费者信息；放开后就能看到了。
               System.in.read(); // 为保证服务一直开着，利用输入流的阻塞来模拟
           } catch (Exception e) {
               e.printStackTrace();
           }
        }
    }

结构图：

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其中服务API

DemoService.java是两个工程都要有的，所以最好打成jar包供双方使用。

Dubbo平台显示提供者和消费者：

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Web.xml方式（tomcat容器）启动注册服务

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

[Center]: /images/20220606/12c404da641d494786dcbdedff11f65e.png
[Center 1]: https://img-blog.csdn.net/20171107222855275?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvYXJkb19wYXNz/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
[Center 2]: https://img-blog.csdn.net/20171107222918245?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvYXJkb19wYXNz/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
[Center 3]: /images/20220606/aabffc0c2f654c67a55997f77a599e9d.png
[Center 4]: /images/20220606/dded62f9821349f3a62440bb28b83e6f.png
[Center 5]: /images/20220606/3b346df4762b4ba0aa4e451fd5c534f8.png
[Center 6]: /images/20220606/53bb4a545b2a4c7eb942101a381b0b8b.png