zookeeper、dubbo整合搭建rpc（基于springMVC）

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1、zookeeper

1.1 安装jdk1.7
1.2 安装zookeeper
下载地址：http://zookeeper.apache.org/
范例zookeeper版本：zookeeper-3.4.9 （官方稳定版本）
解压缩至根目录
1.2.1、并重新命名目录名称为“zoo”。
1.2.2、重命名C:\zoo\conf 下的“zoo_sample.cfg”文件为”zoo.cfg”。
1.2.3、双击“C:\zoo\bin”的zkServer.cmd。（此时为单例模式运行）

2、创建rpc分布式服务器（提供者）、消费服务器、接口

整体图例： 这里写图片描述

dubbo-api（接口定义）：普通的maven项目
dubbo-service（提供者）：基于maven创建的j2ee项目
dubbo-web（消费者）：基于maven创建的j2ee项目

2.1 dubbo-api

dubbo-api的项目结构
这里写图片描述
说明：一般“src/test/java”source Folder 在maven项目不使用，但一般保留完整的目录结构。

dubbo-api的pom文件

<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-api</artifactId>    <version>0.0.1-SNAPSHOT</version>    <packaging>jar</packaging>    <name>dubbo-api</name>    <url>http://maven.apache.org</url>    <properties>        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>    </properties>    <dependencies>        <dependency>            <groupId>junit</groupId>            <artifactId>junit</artifactId>            <version>3.8.1</version>            <scope>test</scope>        </dependency>    </dependencies>    <build>        <plugins>            <plugin>                <groupId>org.apache.maven.plugins</groupId>                <artifactId>maven-compiler-plugin</artifactId>                <version>3.1</version>                <configuration>                    <source>1.7</source>                    <target>1.7</target>                </configuration>            </plugin>        </plugins>    </build></project>

dubbo-api的UserService类

package com.dubbo.service;public interface UserService {    public String getName(String name);}

2.2 dubbo-service

目录图例：这里写图片描述
（上图中红色区域为创建或修改）

dubbo-service项目下的UserServiceImpl.java

package com.dubbo.service.impl;public class UserServiceImpl implements com.dubbo.service.UserService {    @Override    public String getName(String name) {        return "name is:" + name;    }}

dubbo-service的applicationContext.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:p="http://www.springframework.org/schema/p"    xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd    http://code.alibabatech.com/schema/dubbo    http://code.alibabatech.com/schema/dubbo/dubbo.xsd">    <!-- 提供方应用信息，用于计算依赖关系 -->    <dubbo:application name="service_provider" />    <!-- 使用zookeeper注册中心暴露服务地址 -->    <dubbo:registry address="zookeeper://127.0.0.1:2181" />    <!-- 用dubbo协议在28080端口暴露服务 -->    <dubbo:protocol name="dubbo" port="28080" />    <dubbo:service interface="com.dubbo.service.UserService" ref="userService" />    <bean id="userService" class="com.dubbo.service.impl.UserServiceImpl" /></beans>

dubbo-service的web.xml

<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"    id="WebApp_ID" version="2.5">  <display-name>dubbo-service</display-name>  <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list>  <listener>    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  </listener>  <context-param>    <param-name>contextConfigLocation</param-name>    <param-value>classpath:applicationContext.xml</param-value>  </context-param></web-app>

dubbo-service的pom

<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.dubbo</groupId>    <artifactId>dubbo-service</artifactId>    <packaging>war</packaging>    <version>0.0.1-SNAPSHOT</version>    <name>dubbo-service Maven Webapp</name>    <url>http://maven.apache.org</url>    <properties>        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>        <spring.vesion>4.3.2.RELEASE</spring.vesion>    </properties>    <dependencies>        <dependency>            <groupId>junit</groupId>            <artifactId>junit</artifactId>            <version>4.12</version>        </dependency>        <dependency>            <groupId>org.slf4j</groupId>            <artifactId>slf4j-log4j12</artifactId>            <version>1.7.2</version>        </dependency>        <dependency>            <groupId>javax</groupId>            <artifactId>javaee-api</artifactId>            <version>7.0</version>        </dependency>        <dependency>            <groupId>org.glassfish.web</groupId>            <artifactId>javax.servlet.jsp.jstl</artifactId>            <version>1.2.2</version>        </dependency>        <dependency>            <groupId>org.apache.zookeeper</groupId>            <artifactId>zookeeper</artifactId>            <version>3.4.8</version>            <exclusions>                <exclusion>                    <artifactId>log4j</artifactId>                    <groupId>log4j</groupId>                </exclusion>            </exclusions>        </dependency>        <dependency>            <groupId>com.alibaba</groupId>            <artifactId>dubbo</artifactId>            <version>2.5.3</version>            <exclusions>                <exclusion>                    <artifactId>spring</artifactId>                    <groupId>org.springframework</groupId>                </exclusion>            </exclusions>        </dependency>        <dependency>            <groupId>org.javassist</groupId>            <artifactId>javassist</artifactId>            <version>3.18.1-GA</version>        </dependency>        <dependency>            <groupId>com.101tec</groupId>            <artifactId>zkclient</artifactId>            <version>0.9</version>        </dependency>        <dependency>            <groupId>org.aspectj</groupId>            <artifactId>aspectjweaver</artifactId>            <version>1.6.9</version>        </dependency>        <dependency>            <groupId>commons-pool</groupId>            <artifactId>commons-pool</artifactId>            <version>1.5.3</version>        </dependency>        <dependency>            <groupId>commons-collections</groupId>            <artifactId>commons-collections</artifactId>            <version>3.2</version>        </dependency>        <dependency>            <groupId>commons-httpclient</groupId>            <artifactId>commons-httpclient</artifactId>            <version>3.1</version>        </dependency>        <dependency>            <groupId>com.dubbo</groupId>            <artifactId>dubbo-api</artifactId>            <version>0.0.1-SNAPSHOT</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-core</artifactId>            <version>${spring.vesion}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-web</artifactId>            <version>${spring.vesion}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-webmvc</artifactId>            <version>${spring.vesion}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-instrument-tomcat</artifactId>            <version>${spring.vesion}</version>        </dependency>    </dependencies>    <build>        <finalName>dubbo-service</finalName>        <plugins>            <plugin>                <groupId>org.apache.maven.plugins</groupId>                <artifactId>maven-compiler-plugin</artifactId>                <version>3.1</version>                <configuration>                    <source>1.7</source>                    <target>1.7</target>                </configuration>            </plugin>        </plugins>    </build></project>

2.3 dubbo-web项目

项目图例：这里写图片描述

dubbo-web的IndexController.java文件

package com.dubbo.web.controller;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;import com.dubbo.service.UserService;@Controllerpublic class IndexController {    @Autowired    private UserService userService;    @RequestMapping(value = "/index", produces = "text/plain;charset=UTF-8")    @ResponseBody    public String index(HttpServletRequest request, HttpServletResponse response) {        String name = "";        if (request.getParameter("name") != null)            name = request.getParameter("name");        String result = userService.getName(name);        return result;    }}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:context="http://www.springframework.org/schema/context"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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-4.0.xsd    http://www.springframework.org/schema/mvc    http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">    <import resource="dubbo-config.xml" />    <import resource="spring-servlet.xml" />    </beans>

dubbo-config.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-4.0.xsd         http://code.alibabatech.com/schema/dubbo         http://code.alibabatech.com/schema/dubbo/dubbo.xsd">    <dubbo:application name="web_consumer" />    <!-- 使用zookeeper注册中心暴露服务地址 -->    <dubbo:registry address="zookeeper://127.0.0.1:2181" />    <dubbo:reference interface="com.dubbo.service.UserService" id="userService" check="false" /></beans>

spring-servlet.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:context="http://www.springframework.org/schema/context"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"    xsi:schemaLocation="http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans-4.0.xsd    http://www.springframework.org/schema/context    http://www.springframework.org/schema/context/spring-context-4.0.xsd    http://www.springframework.org/schema/mvc    http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">    <context:component-scan base-package="com.dubbo" />    <mvc:annotation-driven /></beans>

dubbo-web的web.xml文件

<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"    id="WebApp_ID" version="2.5">    <display-name>dubbo-controller</display-name>    <welcome-file-list>        <welcome-file></welcome-file>    </welcome-file-list>    <servlet>        <servlet-name>dispatcher</servlet-name>        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>        <init-param>            <param-name>contextConfigLocation</param-name>            <param-value>classpath:applicationContext.xml</param-value>        </init-param>        <load-on-startup>0</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>dispatcher</servlet-name>        <url-pattern>/</url-pattern>    </servlet-mapping></web-app>

dubbo-web的pom文件

<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-web</artifactId>    <version>0.0.1-SNAPSHOT</version>    <packaging>war</packaging>    <name>dubbo-web</name>    <url>http://maven.apache.org</url>    <properties>        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>        <org.springframework.version>4.3.2.RELEASE</org.springframework.version>    </properties>    <dependencies>        <dependency>            <groupId>junit</groupId>            <artifactId>junit</artifactId>            <version>3.8.1</version>            <scope>test</scope>        </dependency>        <dependency>            <groupId>org.slf4j</groupId>            <artifactId>slf4j-log4j12</artifactId>            <version>1.7.2</version>        </dependency>        <dependency>            <groupId>javax</groupId>            <artifactId>javaee-api</artifactId>            <version>7.0</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-core</artifactId>            <version>${org.springframework.version}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-web</artifactId>            <version>${org.springframework.version}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-webmvc</artifactId>            <version>${org.springframework.version}</version>        </dependency>        <dependency>            <groupId>org.glassfish.web</groupId>            <artifactId>javax.servlet.jsp.jstl</artifactId>            <version>1.2.2</version>        </dependency>        <dependency>            <groupId>org.codehaus.jackson</groupId>            <artifactId>jackson-mapper-asl</artifactId>            <version>1.9.13</version>        </dependency>        <dependency>            <groupId>net.sf.json-lib</groupId>            <artifactId>json-lib</artifactId>            <version>2.4</version>            <classifier>jdk15</classifier>        </dependency>        <dependency>            <groupId>org.javassist</groupId>            <artifactId>javassist</artifactId>            <version>3.18.1-GA</version>        </dependency>        <dependency>            <groupId>com.101tec</groupId>            <artifactId>zkclient</artifactId>            <version>0.9</version>        </dependency>        <dependency>            <groupId>org.apache.zookeeper</groupId>            <artifactId>zookeeper</artifactId>            <version>3.4.8</version>            <exclusions>                <exclusion>                    <groupId>org.slf4j</groupId>                    <artifactId>slf4j-log4j12</artifactId>                </exclusion>            </exclusions>        </dependency>        <dependency>            <groupId>com.alibaba</groupId>            <artifactId>dubbo</artifactId>            <version>2.5.3</version>            <exclusions>                <exclusion>                    <artifactId>spring</artifactId>                    <groupId>org.springframework</groupId>                </exclusion>            </exclusions>        </dependency>        <dependency>            <groupId>com.dubbo</groupId>            <artifactId>dubbo-api</artifactId>            <version>0.0.1-SNAPSHOT</version>        </dependency>    </dependencies>    <build>        <finalName>dubbo-web</finalName>        <plugins>            <plugin>                <groupId>org.apache.maven.plugins</groupId>                <artifactId>maven-compiler-plugin</artifactId>                <version>3.1</version>                <configuration>                    <source>1.7</source>                    <target>1.7</target>                </configuration>            </plugin>        </plugins>    </build></project>

总结

由于dubbo是深度依赖netty版本的，目前dubbo2.5.3依赖的是netty.3.7.0 ，netty4的机制与netty3差别较大。

至此项目整合完成。
将dubo-service和dubbo-web两个项目添加到tomcat中运行
打开浏览器地址：http://localhost:8080/dubbo-web/index?name=zoo ，完成测试。

基于maven创建springMVC可参考：http://blog.csdn.net/yeness/article/details/52092278

整合代码地址：http://download.csdn.net/detail/yeness/9657863

protobuf-rpc-pro （第二款rpc）：
maven地址：https://mvnrepository.com/artifact/com.googlecode.protobuf-rpc-pro/protobuf-rpc-pro-duplex
说明：Protobuf RPC Pro is a java protocol buffers RPC implementation featuring bidirectional RPC calls and TCP socket connection re-use and the option of secure communications.

zoroc ice（第三款rpc）：https://zeroc.com/

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