springmvc整合dubbo分布式系统的搭建小例子
四个步骤
1 搭建zookeeper消息中心
2 搭建dubbo服务端代码
3 写dubbo客户端代码
4 dubbo提供的dubbo-admin-2.5.4.war 管理控制台
一,搭建zookeeper
1 下载zookeeper安装文件
zookeeper-3.3.6.tar.gz
这里提供一个百度网盘的下载地址http://pan.baidu.com/s/1gexxfvP
2 执行命令 tar zxvf zookeeper-3.4.6.tar.gz 解压,
3 到 zookeeper-3.3.6/conf 目录下
把zoo_sample.cfg 复制一份为zoo.cfg,作为默认配置文件
4 配置说明
tickTime:这个时间是作为 Zookeeper 服务器之间或客户端与服务器之间维持心跳的时间间隔,也就是每个 tickTime 时间就会发送一个心跳。
dataDir:顾名思义就是 Zookeeper 保存数据的目录,默认情况下,Zookeeper 将写数据的日志文件也保存在这个目录里。
clientPort:这个端口就是客户端连接 Zookeeper 服务器的端口,Zookeeper 会监听这个端口,接受客户端的访问请求。
我的配置: 端口2181是默认配置
5 在zookper-3.3.6/bin目录下执行
./zkServer.sh start 启动zookeeper
6 验证zookeeper是否启动
使用netstat -lpn | grep 2181
如果有端口号, 说明已经启动
二 DubboServer 工程
1,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.zhang.dubboServer</groupId> <artifactId>dubboServer</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>dubboServer Maven Webapp</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.4</version> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.1</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>dubbo</groupId> <artifactId>dubbo</artifactId> <version>2.5.3</version> </dependency> <dependency> <groupId>javassist</groupId> <artifactId>javassist</artifactId> <version>3.15.0-GA</version> <classifier>GA</classifier> </dependency> <dependency> <groupId>netty</groupId> <artifactId>netty</artifactId> <version>3.2.5.Final</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <dependency> <groupId>zkclient</groupId> <artifactId>zkclient</artifactId> <version>0.4</version> </dependency> <dependency> <groupId>zookeeper</groupId> <artifactId>zookeeper</artifactId> <version>3.3.1</version> </dependency> </dependencies> <build> <finalName>dubboServer</finalName> </build> </project>
2.web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0" metadata-complete="false"> <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/spring/springmvc-config.xml;classpath*:dubbo/*.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <servlet> <servlet-name>DispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/spring/springmvc-config.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> <async-supported>true</async-supported> </servlet> <servlet-mapping> <servlet-name>DispatcherServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <filter> <filter-name>CharacterEncodingFilter</filter-name> <filter-class> org.springframework.web.filter.CharacterEncodingFilter </filter-class> <async-supported>true</async-supported> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>3,spring和dubbo配置文件
<?xml version="1.0" encoding="UTF-8"?> <beans:beans xmlns="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:beans="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory --> <resources mapping="/resources/**" location="/resources/" /> <!-- Enables the Spring MVC @Controller programming model --> <annotation-driven ></annotation-driven> <!--spring 自动扫描com.zhang下边的所有类 --> <context:component-scan base-package="com.zhang" /> <context:property-placeholder location="classpath:config.properties" /> <!-- 自定义配置Service --> <beans:bean id="sayHelloService" class="com.zhang.service.demoImpl"/> </beans:beans>
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd "> <!-- 系统项目名 --> <dubbo:application name="DubboDemo" /> <!-- 注册中心 --> <dubbo:registry protocol="zookeeper" address="${able_zookeeper}" /> <!-- 是否纳入调用统计报表(可选) --> <dubbo:monitor protocol="registry"/> <!-- 协议 --> <dubbo:protocol name="dubbo" port="31581" /> <!-- 服务者与消费者的默认配置 --> <!-- 延迟到Spring初始化完成后,再暴露服务,服务调用超时设置为6秒,超时不重试 --> <dubbo:provider delay="-1" timeout="6000" retries="0"/> <dubbo:consumer timeout="6000" retries="0"/> </beans>
<?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:service interface="com.zhang.service.demo" ref="sayHelloService" timeout="3000" protocol="dubbo"/> </beans>config.properties
#able_zookeeper able_zookeeper=192.168.50.42:21814,java代码 一个接口一个实现类
package com.zhang.service; public interface demo { public String sayHello(); }
package com.zhang.service; public class demoImpl implements demo { @Override public String sayHello() { return "hello"; } }
三 DubboClient工程
1,pom.xml和web.xml,config.properties配置文件和DubboServer配置一样
2,增加一个消费者配置文件applicationContext-dubbo-consumer.xml,注:这里需要把服务提供者的jar包打入到客户端,打接口就可以
<?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:reference id="demo" interface="com.zhang.service.demo" check="false" protocol="dubbo"/> </beans>
3,使用
package com.zhang.contr; import org.springframework.beans.factory.annotation.Autowired; public class test { @Autowired private com.zhang.service.demo demo; public String testD(){ return demo.sayHello(); } }
四 dubbo-admin-2.5.4.war 管理控制台
war包下载地址:http://pan.baidu.com/s/1i4xZamD
把这个war包放到tomcat的webapps目录下
1 修改tomcat的端口号不要和其他服务冲突.
2 修改 WEB-INF 下的dubbo.properties文件
3 启动tomcat,访问.
想看源码的提供一个github的访问地址
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