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基于dubbo实现两个项目之间的相互通信

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我是靠谱客的博主 正直奇迹，最近开发中收集的这篇文章主要介绍基于dubbo实现两个项目之间的相互通信，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

最近项目上需要用到内外网数据交互，之前做过一版通过weblogic jms server消息中间件的实现方案，由于当时做的匆忙，生产环境中仍存在许多问题，所以打算借此机会迭代一下内外网交互方案。

查阅相关资料和电话联系好友Jeremy最终决定好好研究一下使用dubbo+zk实现的方案。

做足了理论储备之后上来就是撸代码。。。

有关dubbo的介绍

dubbo的架构图
首先对节点简单说明一下：

  1. provider ，暴露服务的提供方；
  2. customer ，调用远程服务的消费方；
  3. registry，服务注册与发现的注册中心；
  4. monitor ，统计服务的调用次数和调用时间的监控中心；
  5. container，服务运行容器；

节点之间的相互关系感兴趣的同学可以去查阅相关资料，各个节点之间什么关系我觉得完完整整的搭建一下项目就差不多明白了，到时候再回过头来看或许会有新的见解。

zookeeper

首先启动zookeeper，我这里用的版本是：zookeeper-3.4.8
启动之后：

interface

项目主要结构如图:
interface这个project主要作用是提供接口，最终打成jar供customer和provider调用。
下面看下这两个类：
LoginService

package com.os.api.login;

import com.os.entity.Good;

import java.util.List;

/**
 * 描述:
 *
 * @author Matt
 * @create 2019-03-05 8:44
 */

public interface LoginService {

    boolean login(String username, String password);

    List<Good> getGoodList();
}

Good

package com.os.entity;

import java.io.Serializable;

/**
 * 描述:
 *
 * @author Matt
 * @create 2019-03-05 8:45
 */

public class Good implements Serializable {

    String name;

    int price;

    public Good(String name, int price) {
        super();
        this.name = name;
        this.price = price;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getPrice() {
        return price;
    }

    public void setPrice(int price) {
        this.price = price;
    }
}

provider

项目主要结构如图:

这里lib下的interface.jar就是上面的项目生成的jar包，引入到项目中之后新建一个LoginService的实现类。
LoginServiceImpl

package com.os.provider.login;

import com.os.api.login.LoginService;
import com.os.entity.Good;
import org.springframework.util.StringUtils;

import java.util.ArrayList;
import java.util.List;

/**
 * 描述:
 *
 * @author Matt
 * @create 2019-03-05 9:38
 */

public class LoginServiceImpl implements LoginService {
    public boolean login(String name, String password) {
        if(StringUtils.hasText(name) && StringUtils.hasText(password)){
            if(name.equals(password)){
                return true;
            }
        }
        return false;
    }

    public List<Good> getGoodList() {
        List<Good> goodList=new ArrayList<Good>();
        goodList.add(new Good("牛奶", 28));
        goodList.add(new Good("乳酸菌", 15));
        goodList.add(new Good("面包", 30));
        return goodList;
    }
}

在applicationContext.xml里配置

<?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: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">

    <!--提供方应用信息，用于计算依赖关系-->
    <dubbo:application name="webapp-provider" />

    <!--使用zookeeper注册中心，暴露服务地址-->
    <dubbo:registry address="zookeeper://127.0.0.1:2181" />

    <!--使用dubbo协议在20881端口暴露服务（如果有多个提供者则端口号不能重复）-->
    <dubbo:protocol name="dubbo" port="20881" />

    <!--本地bean实现服务-->
    <bean id="loginService" class="com.os.provider.login.LoginServiceImpl" />

    <!--声明需要暴露的服务接口-->
    <dubbo:service interface="com.os.api.login.LoginService" ref="loginService" />

</beans>

web.xml的配置如下：

<?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_3_0.xsd"
         id="WebApp_ID" version="3.0">
  <display-name>provider</display-name>

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

  <!--spring监听器-->
  <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>

  <!--中文乱码过滤器-->
  <filter>
    <filter-name>encodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>utf-8</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

  <!--请求转发器-->
  <servlet>
    <servlet-name>springMVC</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>springMVC</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>

</web-app>

pom.xml文件配置如下：

<?xml version="1.0" encoding="UTF-8"?>

<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.os</groupId>
  <artifactId>provider</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <springframework.version>3.2.4.RELEASE</springframework.version>
    <!-- Logging -->
    <slf4j.version>1.7.5</slf4j.version>
    <slf4j-log4j12.version>1.7.5</slf4j-log4j12.version>
    <log4j.version>1.2.17</log4j.version>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>

    <!-- Logging with SLF4J -->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>${slf4j.version}</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>${slf4j-log4j12.version}</version>
    </dependency>
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>${log4j.version}</version>
    </dependency>

    <!-- SPRING START-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${springframework.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>${springframework.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${springframework.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${springframework.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${springframework.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${springframework.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-orm</artifactId>
      <version>${springframework.version}</version>
    </dependency>
    <!-- SPRING END-->

    <!--ZOOKEEPER + DUBBO-->
    <dependency>
      <groupId>com.101tec</groupId>
      <artifactId>zkclient</artifactId>
      <version>0.3</version>
    </dependency>
    <dependency>
      <groupId>org.apache.zookeeper</groupId>
      <artifactId>zookeeper</artifactId>
      <version>3.4.5</version>
    </dependency>
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>dubbo</artifactId>
      <version>2.5.3</version>
      <scope>compile</scope>
      <exclusions>
        <exclusion>
          <artifactId>spring</artifactId>
          <groupId>org.springframework</groupId>
        </exclusion>
      </exclusions>
    </dependency>
    <!--ZOOKEEPER + DUBBO-->

    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.2</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
    </dependency>

  </dependencies>

  <build>
    <finalName>provider</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

配置完成之后启动项目：
在这里插入图片描述

customer

项目结构如图：
在这里插入图片描述这里主要配置一个控制器，用来接收前台页面的请求：
LoginController：

package com.os.customer.login;

import com.os.api.login.LoginService;
import com.os.entity.Good;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.List;

/**
 * 描述:
 *
 * @author Matt
 * @create 2019-03-05 10:25
 */

@Controller
public class LoginController {

    @Autowired
    private LoginService loginService;

    @RequestMapping("login.do")
    public String login(String username, String password, Model model){
        boolean flag = loginService.login(username, password);
        if(flag){
            List<Good> goodList = loginService.getGoodList();
            model.addAttribute("goodList", goodList);
            return "/goodList.jsp";
        }
        model.addAttribute("error", "登陆失败， 用户名密码必须一样才能登陆成功！");
        return "/index.jsp";
    }
}

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: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">

    <!--消费方应用信息，用于计算依赖关系-->
    <dubbo:application name="webapp-customer" />

    <!--使用zookeeper注册中心暴露服务地址-->
    <dubbo:registry address="zookeeper://127.0.0.1:2181" />

    <!--生成远程服务代理，可以和本地bean一样使用loginService-->
    <dubbo:reference id="loginService" interface="com.os.api.login.LoginService" />

</beans>

springMVC-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- Bean头部 -->
<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:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:util="http://www.springframework.org/schema/util"
    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.xsd
            http://www.springframework.org/schema/util 
            http://www.springframework.org/schema/util/spring-util.xsd">
    <context:component-scan base-package="com.os.customer.login"></context:component-scan>
</beans>

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"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
         id="WebApp_ID" version="3.0">
  <display-name>dubbo-web-customer</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>

  <filter>
    <filter-name>encodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>utf-8</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

  <servlet>
    <servlet-name>springMVC</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath*:springMVC-servlet.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>springMVC</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
</web-app>

pom.xml:

<?xml version="1.0" encoding="UTF-8"?>

<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.os</groupId>
  <artifactId>customer</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <springframework.version>4.0.5.RELEASE</springframework.version>
    <!-- Logging -->
    <slf4j.version>1.7.5</slf4j.version>
    <slf4j-log4j12.version>1.7.5</slf4j-log4j12.version>
    <log4j.version>1.2.17</log4j.version>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>

    <!-- Logging with SLF4J -->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>${slf4j.version}</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>${slf4j-log4j12.version}</version>
    </dependency>
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>${log4j.version}</version>
    </dependency>

    <!-- SPRING START-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${springframework.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>${springframework.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${springframework.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${springframework.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${springframework.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${springframework.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-orm</artifactId>
      <version>${springframework.version}</version>
    </dependency>
    <!-- SPRING END-->

    <!--ZOOKEEPER + DUBBO-->
    <dependency>
      <groupId>com.101tec</groupId>
      <artifactId>zkclient</artifactId>
      <version>0.3</version>
    </dependency>
    <dependency>
      <groupId>org.apache.zookeeper</groupId>
      <artifactId>zookeeper</artifactId>
      <version>3.4.5</version>
    </dependency>
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>dubbo</artifactId>
      <version>2.5.3</version>
      <scope>compile</scope>
      <exclusions>
        <exclusion>
          <artifactId>spring</artifactId>
          <groupId>org.springframework</groupId>
        </exclusion>
      </exclusions>
    </dependency>
    <!--ZOOKEEPER + DUBBO-->

    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.2</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>

  </dependencies>

  <build>
    <finalName>customer</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

项目启动之后弹出index页面：
在这里插入图片描述登陆之后发现能获取provider项目中的数据：
在这里插入图片描述说明两个项目数据交互成功。

这里主要是将项目搭建的主要步骤记录一下。

最后

以上就是正直奇迹为你收集整理的基于dubbo实现两个项目之间的相互通信的全部内容，希望文章能够帮你解决基于dubbo实现两个项目之间的相互通信所遇到的程序开发问题。

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