IDEA下搭建maven管理的DUBBO项目,Zookeeper作为注册中心

环境：JDK 1.8、dubbo版本：2.9.2-SNAPSHOT、zookeeper版本：3.5.1-alpha、IDEA2016

1.下载zookeeper,点击下载，解压即可，重命名conf文件夹中zoo_sample.cfg文件为zoo.cfg并修改为下：

# zookeeper中使用的基本时间单位, 毫秒值
tickTime=2000  

# follower和leader之间的最长心跳时间
initLimit=10  

# 配置leader和follower之间发送消息, 请求和应答的最大时间长度
syncLimit=5  

# zk数据存储位置  
dataDir=E:\\Work_SoftWare\\zookeeper-3.4.9\\data  

# zk日志存储位置  
dataLogDir=E:\\Work_SoftWare\\zookeeper-3.4.9\\log  

# 监听client连接的端口号
clientPort=2181  

# 清理频率，单位是小时
autopurge.purgeInterval=1

各个配置参数解释见链接 https://my.oschina.net/xiaotian120/blog/194820

启动zookeeper：依次打开bin目录下的zkServer.cmd、zkCli.cmd

如果出现启动闪退的情况，需要用记事本打开以上文件

zkServer.cmd修改如下（加入pause暂停查看问题）：

setlocal
call "%~dp0zkEnv.cmd"

set ZOOMAIN=org.apache.zookeeper.server.quorum.QuorumPeerMain
set ZOO_LOG_FILE=zookeeper-%USERNAME%-server-%COMPUTERNAME%.log

echo on
call %JAVA% "-Dzookeeper.log.dir=%ZOO_LOG_DIR%" "-Dzookeeper.root.logger=%ZOO_LOG4J_PROP%" "-Dzookeeper.log.file=%ZOO_LOG_FILE%" "-XX:+HeapDumpOnOutOfMemoryError" "-XX:OnOutOfMemoryError=cmd /c taskkill /pid %%%%p /t /f" -cp "%CLASSPATH%" %ZOOMAIN% "%ZOOCFG%" %*

endlocal

pause

2.新建maven工程，父工程不勾选框架为普通工程，子工程customer为web端则需勾选，建议加maven参数，archetypeCatalog=internal。这个参数的意义是让这个maven项目的骨架不要到远程下载而是本地获取

IDEA子工程为父工程下的模块，下图为创建子工程，父工程不需要勾选（create from archetype）

我的工程目录如下：

3.增加Spring框架

 web.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5" metadata-complete="false">

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/springmvc-servlet.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>

<!-- 拦截所有请求-->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<!--会自动寻找springmvc-servlet.xml文件-->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>

<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

springmvc-servlet.xml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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="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 http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd"> 
<import resource="classpath:dubbo-customer.xml"/>
<context:annotation-config/>
<context:component-scan base-package="com.xiaozhi.controller"/>
<!-- 对静态资源文件的访问，交给default servlet handler处理 -->
<mvc:default-servlet-handler/>
<!-- 默认的注解映射的支持 -->
<mvc:annotation-driven />

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>

</beans>

4.api为接口工程，无需配置。provider为提供服务实现接口，在实现接口后需要配置如下:

这两个文件直接导入Spring配置

<!--加入其他配置文件-->
<import resource="classpath:dubbo-provider.xml"/>
<import resource="classpath:spring-mybatis.xml"/>

dubbo-provider.xml放入resource文件目录下

<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"> <!-- 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:protocol id="dubbo" name="dubbo" port="21521" threads="300"/>

<dubbo:provider protocol="dubbo" />
<!-- 使用zookeeper注册中心暴露服务地址 -->
<dubbo:registry address="zookeeper://10.22.0.23:2181" check="false" />
<!-- 要暴露的服务接口 -->
<dubbo:service version="1.0" interface="com.xiaozhi.service.XiaozhiService" ref="xiaozhiServiceImp" />
</beans>

同理，customer也需配置如下：

<?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 ">
<!-- 消费方应用名，用于计算依赖关系，不是匹配条件，不要与提供方一样 -->
<dubbo:application name="dubbo-customer" />

<!-- 使用multicast广播注册中心暴露发现服务地址 -->
<dubbo:registry address="zookeeper://10.22.0.23:2181" file=".dubbo/dubbo-registry.cache"/>

<dubbo:consumer check="false" timeout="6000"/>

<dubbo:reference version="1.0" id="xioazhiService" interface="com.xiaozhi.service.XiaozhiService" check="false"/>
</beans>

customer还需配置Mybatis文件

spring-mybatis.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:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd ">
<!--引入配置文件-->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:application.properties"/>
</bean>
<!-- 配置数据源 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="${mybatis.driverClass}"/>
<property name="url" value="${mybatis.jdbcUrl}"/>
<property name="username" value="${mybatis.username}"/>
<pro
c474
perty name="password" value="${mybatis.password}"/>
<!-- 初始化连接大小 -->
<property name="initialSize" value="${mybatis.initialSize}"></property>
<!-- 连接池最大数量 -->
<property name="maxActive" value="${mybatis.maxActive}"></property>
<!-- 连接池最大空闲 -->
<property name="maxIdle" value="${mybatis.maxIdle}"></property>
<!-- 连接池最小空闲 -->
<property name="minIdle" value="${mybatis.minIdle}"></property>
<!-- 获取连接最大等待时间 -->
<property name="maxWait" value="${mybatis.maxWait}"></property>
</bean>

<!-- mybatis和spring完美整合，不需要mybatis的配置映射文件 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<!-- 自动扫描mapping.xml文件 -->
<property name="mapperLocations" value="classpath:mapping/*.xml"></property>
</bean>

<!-- DAO接口所在包名，Spring会自动查找其下的类 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="annotationClass" value="org.springframework.stereotype.Repository"/>
<property name="basePackage" value="com.xiaozhi.dao"/>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>

<!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>

<!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
<tx:annotation-driven transaction-manager="transactionManager"/>

</beans>

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"> <parent>
<artifactId>DubboDemo</artifactId>
<groupId>com.dubboDemo</groupId>
<version>1.0-SNAPSHOT</version>
</parent>

<modelVersion>4.0.0</modelVersion>
<artifactId>customer</artifactId>
<packaging>war</packaging>
<name>customer Maven Webapp</name>
<url>http://maven.apache.org</url>

<dependencies>

<dependency>
<groupId>com.dubboDemo</groupId>
<artifactId>api</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>

<!-- spring start -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<scope>test</scope>
</dependency>
<!--spring end -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>

<dependency>
<groupId>org.springframework.amqp</groupId>
<artifactId>spring-rabbit</artifactId>
</dependency>

<!--dubbo-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
</dependency>
<!--netty-->
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty</artifactId>
</dependency>

<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.5.1-alpha</version>
</dependency>
</dependencies>
<build>
<finalName>customer</finalName>
</build>
</project>

最后两个工程分别由两个tomcat启动，customer就可以隔空调用provider提供的服务了

provider把服务暴露在zookeeper,customer从zookeeper中获取服务，两者无依赖关系

项目https://github.com/HuangLiwis/myDubbo