基于dubbo实现两个项目之间的相互通信

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

基于dubbo实现两个项目之间的相互通信_第1张图片
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:
基于dubbo实现两个项目之间的相互通信_第2张图片

interface

项目主要结构如图:
基于dubbo实现两个项目之间的相互通信_第3张图片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:
基于dubbo实现两个项目之间的相互通信_第4张图片
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


<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="webapp-provider" />

    
    <dubbo:registry address="zookeeper://127.0.0.1:2181" />

    
    <dubbo:protocol name="dubbo" port="20881" />

    
    <bean id="loginService" class="com.os.provider.login.LoginServiceImpl" />

    
    <dubbo:service interface="com.os.api.login.LoginService" ref="loginService" />

beans>

web.xml的配置如下:


<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>providerdisplay-name>

  <welcome-file-list>
    <welcome-file>index.jspwelcome-file>
  welcome-file-list>

  
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
  listener>
  <context-param>
    <param-name>contextConfigLocationparam-name>
    <param-value>
      classpath*:applicationContext.xml
    param-value>
  context-param>

  
  <filter>
    <filter-name>encodingFilterfilter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
    <init-param>
      <param-name>encodingparam-name>
      <param-value>utf-8param-value>
    init-param>
  filter>
  <filter-mapping>
    <filter-name>encodingFilterfilter-name>
    <url-pattern>/*url-pattern>
  filter-mapping>

  
  <servlet>
    <servlet-name>springMVCservlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
  servlet>
  <servlet-mapping>
    <servlet-name>springMVCservlet-name>
    <url-pattern>*.dourl-pattern>
  servlet-mapping>

web-app>

pom.xml文件配置如下:



<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>4.0.0modelVersion>

  <groupId>com.osgroupId>
  <artifactId>providerartifactId>
  <version>1.0-SNAPSHOTversion>
  <packaging>warpackaging>

  <properties>
    <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
    <springframework.version>3.2.4.RELEASEspringframework.version>
    
    <slf4j.version>1.7.5slf4j.version>
    <slf4j-log4j12.version>1.7.5slf4j-log4j12.version>
    <log4j.version>1.2.17log4j.version>
  properties>

  <dependencies>
    <dependency>
      <groupId>junitgroupId>
      <artifactId>junitartifactId>
      <version>3.8.1version>
      <scope>testscope>
    dependency>

    
    <dependency>
      <groupId>org.slf4jgroupId>
      <artifactId>slf4j-apiartifactId>
      <version>${slf4j.version}version>
    dependency>
    <dependency>
      <groupId>org.slf4jgroupId>
      <artifactId>slf4j-log4j12artifactId>
      <version>${slf4j-log4j12.version}version>
    dependency>
    <dependency>
      <groupId>log4jgroupId>
      <artifactId>log4jartifactId>
      <version>${log4j.version}version>
    dependency>

    
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-contextartifactId>
      <version>${springframework.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-aopartifactId>
      <version>${springframework.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-webartifactId>
      <version>${springframework.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-webmvcartifactId>
      <version>${springframework.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-txartifactId>
      <version>${springframework.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-jdbcartifactId>
      <version>${springframework.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-ormartifactId>
      <version>${springframework.version}version>
    dependency>
    

    
    <dependency>
      <groupId>com.101tecgroupId>
      <artifactId>zkclientartifactId>
      <version>0.3version>
    dependency>
    <dependency>
      <groupId>org.apache.zookeepergroupId>
      <artifactId>zookeeperartifactId>
      <version>3.4.5version>
    dependency>
    <dependency>
      <groupId>com.alibabagroupId>
      <artifactId>dubboartifactId>
      <version>2.5.3version>
      <scope>compilescope>
      <exclusions>
        <exclusion>
          <artifactId>springartifactId>
          <groupId>org.springframeworkgroupId>
        exclusion>
      exclusions>
    dependency>
    

    <dependency>
      <groupId>javax.servlet.jspgroupId>
      <artifactId>jsp-apiartifactId>
      <version>2.2version>
    dependency>
    <dependency>
      <groupId>javax.servletgroupId>
      <artifactId>servlet-apiartifactId>
      <version>2.5version>
    dependency>

  dependencies>

  <build>
    <finalName>providerfinalName>
    <pluginManagement>
      <plugins>
        <plugin>
          <artifactId>maven-clean-pluginartifactId>
          <version>3.1.0version>
        plugin>
        
        <plugin>
          <artifactId>maven-resources-pluginartifactId>
          <version>3.0.2version>
        plugin>
        <plugin>
          <artifactId>maven-compiler-pluginartifactId>
          <version>3.8.0version>
        plugin>
        <plugin>
          <artifactId>maven-surefire-pluginartifactId>
          <version>2.22.1version>
        plugin>
        <plugin>
          <artifactId>maven-war-pluginartifactId>
          <version>3.2.2version>
        plugin>
        <plugin>
          <artifactId>maven-install-pluginartifactId>
          <version>2.5.2version>
        plugin>
        <plugin>
          <artifactId>maven-deploy-pluginartifactId>
          <version>2.8.2version>
        plugin>
      plugins>
    pluginManagement>
  build>
project>

配置完成之后启动项目:
基于dubbo实现两个项目之间的相互通信_第5张图片

customer

项目结构如图:
基于dubbo实现两个项目之间的相互通信_第6张图片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


<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="webapp-customer" />

    
    <dubbo:registry address="zookeeper://127.0.0.1:2181" />

    
    <dubbo:reference id="loginService" interface="com.os.api.login.LoginService" />

beans>

springMVC-servlet.xml



<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


<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-customerdisplay-name>

  <welcome-file-list>
    <welcome-file>index.jspwelcome-file>
  welcome-file-list>

  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
  listener>
  <context-param>
    <param-name>contextConfigLocationparam-name>
    <param-value>
      classpath*:applicationContext.xml
    param-value>
  context-param>

  <filter>
    <filter-name>encodingFilterfilter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
    <init-param>
      <param-name>encodingparam-name>
      <param-value>utf-8param-value>
    init-param>
  filter>
  <filter-mapping>
    <filter-name>encodingFilterfilter-name>
    <url-pattern>/*url-pattern>
  filter-mapping>

  <servlet>
    <servlet-name>springMVCservlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
    <init-param>
      <param-name>contextConfigLocationparam-name>
      <param-value>classpath*:springMVC-servlet.xmlparam-value>
    init-param>
    <load-on-startup>1load-on-startup>
  servlet>
  <servlet-mapping>
    <servlet-name>springMVCservlet-name>
    <url-pattern>*.dourl-pattern>
  servlet-mapping>
web-app>

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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0modelVersion>

  <groupId>com.osgroupId>
  <artifactId>customerartifactId>
  <version>1.0-SNAPSHOTversion>
  <packaging>warpackaging>

  <properties>
    <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
    <springframework.version>4.0.5.RELEASEspringframework.version>
    
    <slf4j.version>1.7.5slf4j.version>
    <slf4j-log4j12.version>1.7.5slf4j-log4j12.version>
    <log4j.version>1.2.17log4j.version>
  properties>

  <dependencies>
    <dependency>
      <groupId>junitgroupId>
      <artifactId>junitartifactId>
      <version>4.11version>
      <scope>testscope>
    dependency>

    
    <dependency>
      <groupId>org.slf4jgroupId>
      <artifactId>slf4j-apiartifactId>
      <version>${slf4j.version}version>
    dependency>
    <dependency>
      <groupId>org.slf4jgroupId>
      <artifactId>slf4j-log4j12artifactId>
      <version>${slf4j-log4j12.version}version>
    dependency>
    <dependency>
      <groupId>log4jgroupId>
      <artifactId>log4jartifactId>
      <version>${log4j.version}version>
    dependency>

    
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-contextartifactId>
      <version>${springframework.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-aopartifactId>
      <version>${springframework.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-webartifactId>
      <version>${springframework.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-webmvcartifactId>
      <version>${springframework.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-txartifactId>
      <version>${springframework.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-jdbcartifactId>
      <version>${springframework.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-ormartifactId>
      <version>${springframework.version}version>
    dependency>
    

    
    <dependency>
      <groupId>com.101tecgroupId>
      <artifactId>zkclientartifactId>
      <version>0.3version>
    dependency>
    <dependency>
      <groupId>org.apache.zookeepergroupId>
      <artifactId>zookeeperartifactId>
      <version>3.4.5version>
    dependency>
    <dependency>
      <groupId>com.alibabagroupId>
      <artifactId>dubboartifactId>
      <version>2.5.3version>
      <scope>compilescope>
      <exclusions>
        <exclusion>
          <artifactId>springartifactId>
          <groupId>org.springframeworkgroupId>
        exclusion>
      exclusions>
    dependency>
    

    <dependency>
      <groupId>javax.servlet.jspgroupId>
      <artifactId>jsp-apiartifactId>
      <version>2.2version>
    dependency>
    <dependency>
      <groupId>javax.servletgroupId>
      <artifactId>servlet-apiartifactId>
      <version>2.5version>
    dependency>
    <dependency>
      <groupId>javax.servletgroupId>
      <artifactId>jstlartifactId>
      <version>1.2version>
    dependency>

  dependencies>

  <build>
    <finalName>customerfinalName>
    <pluginManagement>
      <plugins>
        <plugin>
          <artifactId>maven-clean-pluginartifactId>
          <version>3.1.0version>
        plugin>
        
        <plugin>
          <artifactId>maven-resources-pluginartifactId>
          <version>3.0.2version>
        plugin>
        <plugin>
          <artifactId>maven-compiler-pluginartifactId>
          <version>3.8.0version>
        plugin>
        <plugin>
          <artifactId>maven-surefire-pluginartifactId>
          <version>2.22.1version>
        plugin>
        <plugin>
          <artifactId>maven-war-pluginartifactId>
          <version>3.2.2version>
        plugin>
        <plugin>
          <artifactId>maven-install-pluginartifactId>
          <version>2.5.2version>
        plugin>
        <plugin>
          <artifactId>maven-deploy-pluginartifactId>
          <version>2.8.2version>
        plugin>
      plugins>
    pluginManagement>
  build>
project>

项目启动之后弹出index页面:
基于dubbo实现两个项目之间的相互通信_第7张图片登陆之后发现能获取provider项目中的数据:
基于dubbo实现两个项目之间的相互通信_第8张图片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。

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