dubbo+zoopkeeper入门详解

来源：互联网发布：青岛seo外包公司费用编辑：程序博客网时间：2024/06/08 17:53

zookeeper安装教程

由于服务器有限，故在一台服务器上安装三个zookeeper.
1.创建三个文件夹
mkdir server1
mkdir server2
mkdir server3
2.分别在三个文件夹下解压zookeeper压缩包
tar -xzvf zookeeper-3.4.9.tar.gz
3.分别在三个文件夹中创建data,dataLog,logs 三个文件夹
mkdir data
mkdir dataLog
mkdir logs
4,切换到zookeeper-3.4.9配置文件默认.cfg结尾的文件三个文件的clientPort需不一样，避免端口冲突

5.分别在三个server的data文件夹中创建myid文件，类容依次为1,2,3
vi myid

6.启动zoopkeeper
切换到bin目录下
输入命令
./zkServer.sh start 启动
./zkServer.sh status 查看状态
./zkServer.sh stop 停止
7.启动完之后运行如下命令，监听zoopkeeper状态
./zkCli.sh -server 127.0.0.1:2181
注：端口号为配置文件的clientPort

dubbo入门实例

1.创建提供服务的maven项目 dubbo-server
目录结构如下
这里写图片描述

2.pom.xml引入相关jar包

<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.dubbo</groupId>   <artifactId>dubbo-server</artifactId>   <version>0.0.1-SNAPSHOT</version>   <packaging>jar</packaging>   <name>dubbo-server</name>   <url>http://maven.apache.org</url>   <properties>    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>   </properties>    <dependencies>          <!-- spring begin -->          <dependency>              <groupId>org.springframework</groupId>              <artifactId>spring-context</artifactId>              <version>4.1.6.RELEASE</version>          </dependency>          <!-- spring end -->          <!-- dubbo begin -->          <dependency>              <groupId>com.alibaba</groupId>              <artifactId>dubbo</artifactId>              <version>2.5.3</version>          </dependency>          <!-- dubbo end -->          <!-- 注册中心zookeeper begin -->          <dependency>              <groupId>org.apache.zookeeper</groupId>              <artifactId>zookeeper</artifactId>              <version>3.3.6</version>          </dependency>          <!-- 注册中心zookeeper end -->          <!-- log begin -->          <dependency>              <groupId>commons-logging</groupId>              <artifactId>commons-logging</artifactId>              <version>1.1.1</version>          </dependency>          <dependency>              <groupId>log4j</groupId>              <artifactId>log4j</artifactId>              <version>1.2.15</version>              <exclusions>                  <exclusion>                      <groupId>com.sun.jdmk</groupId>                      <artifactId>jmxtools</artifactId>                  </exclusion>                  <exclusion>                      <groupId>com.sun.jmx</groupId>                      <artifactId>jmxri</artifactId>                  </exclusion>                  <exclusion>                      <artifactId>jms</artifactId>                      <groupId>javax.jms</groupId>                  </exclusion>                  <exclusion>                      <artifactId>mail</artifactId>                      <groupId>javax.mail</groupId>                  </exclusion>              </exclusions>          </dependency>          <!-- log end -->         <!-- other begin -->          <dependency>              <groupId>org.jboss.netty</groupId>              <artifactId>netty</artifactId>              <version>3.2.0.Final</version>          </dependency>          <dependency>              <groupId>com.101tec</groupId>              <artifactId>zkclient</artifactId>              <version>0.8</version>          </dependency>          <!-- other end -->      </dependencies>  </project>

3.配置服务提供的xml文件

<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" />      <!-- zookeeper注册中心 -->      <dubbo:registry address="zookeeper://192.168.1.15:2181" />      <dubbo:protocol name="dubbo" port="9888" />      <!-- 和本地bean一样实现服务 -->       <bean id="demoService" class="com.interfacesImpl.DemoServiceImpl" />      <!-- 向注册中心注册暴漏服务地址,注册服务 -->      <dubbo:service interface="com.interfaces.DemoService"          ref="demoService" executes="10" />  </beans>

如果xml dubbo异常，按如下步骤处理
1)下载dubbo.xsd到本地
2）添加下载的文件
这里写图片描述

3）修改key,和配置文件保持一致
这里写图片描述

4.添加接口，实现类，以及测试类

public interface DemoService {    String sayHello(String name);}

public class DemoServiceImpl implements DemoService {public String sayHello(String name) { System.out.println("init : " + name);       return "hello " + name;  }}

public class ServerMain { public static void main(String[] args) throws IOException {         ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext( new String[] { "applicationProvider.xml" });         context.start();         System.out.println("输入任意按键退出 ~ ");         System.in.read();         context.close();     }  }

5.创建提供服务的maven项目 dubbo-client

6，引入相关jar包

<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.dubbo</groupId>  <artifactId>dubbo-client</artifactId>  <version>0.0.1-SNAPSHOT</version>  <packaging>jar</packaging>  <name>dubbo-client</name>  <url>http://maven.apache.org</url>  <properties>    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  </properties> <dependencies>          <!-- spring begin -->          <dependency>              <groupId>org.springframework</groupId>              <artifactId>spring-context</artifactId>              <version>4.1.6.RELEASE</version>          </dependency>          <!-- spring end -->          <!-- dubbo begin -->          <dependency>              <groupId>com.alibaba</groupId>              <artifactId>dubbo</artifactId>              <version>2.5.3</version>          </dependency>          <!-- dubbo end -->          <!-- 注册中心zookeeper begin -->          <dependency>              <groupId>org.apache.zookeeper</groupId>              <artifactId>zookeeper</artifactId>              <version>3.3.6</version>          </dependency>          <!-- 注册中心zookeeper end -->          <!-- log begin -->          <dependency>              <groupId>log4j</groupId>              <artifactId>log4j</artifactId>              <version>1.2.15</version>              <exclusions>                  <exclusion>                      <groupId>com.sun.jdmk</groupId>                      <artifactId>jmxtools</artifactId>                  </exclusion>                  <exclusion>                      <groupId>com.sun.jmx</groupId>                      <artifactId>jmxri</artifactId>                  </exclusion>                  <exclusion>                      <artifactId>jms</artifactId>                      <groupId>javax.jms</groupId>                  </exclusion>                  <exclusion>                      <artifactId>mail</artifactId>                      <groupId>javax.mail</groupId>                  </exclusion>              </exclusions>          </dependency>          <!-- log end -->          <!-- other begin -->          <dependency>              <groupId>com.101tec</groupId>              <artifactId>zkclient</artifactId>              <version>0.8</version>          </dependency>          <dependency>              <groupId>com.dubbo</groupId>              <artifactId>dubbo-server</artifactId>              <version>0.0.1-SNAPSHOT</version>          </dependency>         <!-- other end -->      </dependencies>  </project>

7.配置xml文件

<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" />      <!-- zookeeper注册中心 -->      <dubbo:registry address="zookeeper://192.168.1.15:2181" />    <!-- 向注册中心订阅服务 -->      <dubbo:reference id="demoService" interface="com.interfaces.DemoService" />  </beans>

7.创建main方法

public class ClientMain {    public static void main(String[] args) {        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(                new String[] { "applicationConsumer.xml" });        context.start();        DemoService service = (DemoService) context.getBean("demoService");        System.out.println(service.sayHello("world"));        context.close();    }  }

8.测试结果
先启动 ServerMain方法，待出现如下，运行 ClientMain方法

这里写图片描述

阅读全文

0 0