vscode 搭建web工程_Dubbo 分布式架构搭建教育 PC 站

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架构设计与环境搭建

项目架构

项目介绍

教育 PC 站是提供给学员观看技术视频的网站。

学员使用手机号注册登录后，可以选择适合自己的课程，并观看课程视频，当然，有免费的课程，也有 VIP 专属课程。

技术选型

前端技术选型

  • Vue.js - 是一套用于构建用户界面的渐进式 JavaScript 框架

  • ElementUI 库 - 是饿了么前端出品的基于 Vue.js 的后台组件库，方便程序员进行页面快速布局和构建

  • node.js - 简单的说 Node.js 就是运行在服务端的 JavaScript 运行环境

  • Axios - 对 Ajax 的封装, 简单来说就是 Ajax 技术实现了局部数据的刷新，AXIOS 实现了对 Ajax 的封装

后端技术选型

  • Web 层借助 SpringMVC 接收请求，进行视图跳转

  • Service 层借助 Spring 进行 IOC、AOP、及事务管理

  • Dao 层 借助 MyBatis 进行数据库交互

  • EasyCode 插件 IDEA 快速生成实体类的插件

  • Zookeeper 服务注册与服务发现

  • Dubbo 分布式框架，远程 RPC 调用

  • Redis 内存数据库，缓存

  • Lombok 消除实体类中冗余的 get 和 set

  • SpringSocial 简单理解就是和第三方应用打交道，微信登录用

项目开发环境

开发工具

  • 后端 - IDEA 2019

  • 前端 - VS code

  • 数据库客户端工具 - SQLYog

开发环境

  • JDK 11

  • Maven 3.6.3

  • MySQL 5.7

  • Zookeeper 3.6.0

  • Dubbo 2.5.7

  • Redis 5.0.4

开发后端服务接口

采用前后端分离的开发模式，先开发后端服务接口，测试成功，再开发前端 Vue.js 界面，最后进行前后端联调，项目上线。

项目结构与命名

单一架构：

tomcat-[view -> controller -> service -> dao -> mySQL]

分布式架构：

tomcat-[view:PC] --> tomcat-[controller]
tomcat-[view:phone] --> tomcat-[controller]

tomcat-[controller] --> tomcat-[service->redis->dao->MySQL]

后端项目架构，采用 Dubbo 的生产者和消费者的理论，创建服务提供方和服务消费方两个工程，通过 Maven 聚合工程来搭建，模块划分如下：

----------------------------------------------
> 服务提供 <
lagou-edu-parent - pom 聚合父工程，统一依赖设置
lagou-edu-entity - jar 工程，封装实体类
lagou-edu-dao - jar 工程，封装与数据库打交道的部分
lagou-edu-service - web 工程，暴露服务的接口和实现

----------------------------------------------

> 服务消费 <
lagou-edu-web - web 工程，接收前端工程发来的请求，远程调用服务并消费
----------------------------------------------
URL 命名

  • 查询(get 开头)：http://localhost:8002/course/getList

  • 保存(save 开头)：http://localhost:8002/course/saveXx

  • 更新(update 开头)：http://localhost:8002/course/updateXx

接口响应格式
/**
 * Data Transfer Object
 * 数据传输对象
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
@ToString
public class ResponseDTO<T> implements Serializable {
    private static final long serialVersionUID = 1L;
    // 操作状态
    private int state;  
    // 状态描述
    private String message;  
    // 相应内容
    private T content;
    ...
}
初始化数据库

参考数据库设计文档

服务提供方项目搭建
父模块 `lagou-edu-parent`

POM 聚合父工程，统一依赖设置

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>4.0.0modelVersion>

    <groupId>com.rendagroupId>
    <artifactId>lagou-edu-parentartifactId>
    <version>1.0-SNAPSHOTversion>
    <modules>
        <module>lagou-edu-entitymodule>
        <module>lagou-edu-daomodule>
        <module>lagou-edu-servicemodule>
    modules>

    <packaging>pompackaging>

    
    <properties>
        <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
        <maven.compiler.encoding>UTF-8maven.compiler.encoding>
        <java.version>1.11java.version>
        <maven.compiler.source>11maven.compiler.source>
        <maven.compiler.target>11maven.compiler.target>
        <spring.version>5.0.6.RELEASEspring.version>
    properties>

    <dependencies>
        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-contextartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-beansartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-webmvcartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-jdbcartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-aspectsartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-testartifactId>
            <version>${spring.version}version>
            <scope>testscope>
        dependency>
        
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatisartifactId>
            <version>3.2.8version>
        dependency>
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatis-springartifactId>
            <version>1.3.2version>
        dependency>
        
        <dependency>
            <groupId>com.alibabagroupId>
            <artifactId>druidartifactId>
            <version>1.0.9version>
        dependency>
        
        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>5.1.32version>
        dependency>
        
        <dependency>
            <groupId>com.alibabagroupId>
            <artifactId>dubboartifactId>
            <version>2.5.7version>
        dependency>
        
        <dependency>
            <groupId>org.apache.zookeepergroupId>
            <artifactId>zookeeperartifactId>
            <version>3.4.6version>
        dependency>
        
        <dependency>
            <groupId>com.github.sgroschupfgroupId>
            <artifactId>zkclientartifactId>
            <version>0.1version>
        dependency>
        <dependency>
            <groupId>javassistgroupId>
            <artifactId>javassistartifactId>
            <version>3.11.0.GAversion>
        dependency>
        
        <dependency>
            <groupId>com.alibabagroupId>
            <artifactId>fastjsonartifactId>
            <version>1.2.47version>
        dependency>
        
        <dependency>
            <groupId>junitgroupId>
            <artifactId>junitartifactId>
            <version>4.12version>
            <scope>testscope>
        dependency>
        
        <dependency>
            <groupId>org.springframework.datagroupId>
            <artifactId>spring-data-redisartifactId>
            <version>2.3.2.RELEASEversion>
        dependency>
        
        <dependency>
            <groupId>redis.clientsgroupId>
            <artifactId>jedisartifactId>
            <version>3.1.0version>
        dependency>
        
        <dependency>
            <groupId>com.fasterxml.jackson.coregroupId>
            <artifactId>jackson-databindartifactId>
            <version>2.9.8version>
        dependency>
    dependencies>

project>
子模块 `lagou-edu-entity`

Jar 工程，封装实体类

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">
    <parent>
        <artifactId>lagou-edu-parentartifactId>
        <groupId>com.rendagroupId>
        <version>1.0-SNAPSHOTversion>
    parent>
    <modelVersion>4.0.0modelVersion>

    <artifactId>lagou-edu-entityartifactId>

    <dependencies>
        
        <dependency>
            <groupId>org.projectlombokgroupId>
            <artifactId>lombokartifactId>
            <version>1.18.12version>
            <scope>providedscope>
        dependency>
    dependencies>

project>
子模块 `lagou-edu-dao`

Jar 工程，封装与数据库打交道的部分，依赖于 lagou-edu-entity

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">
    <parent>
        <artifactId>lagou-edu-parentartifactId>
        <groupId>com.rendagroupId>
        <version>1.0-SNAPSHOTversion>
    parent>
    <modelVersion>4.0.0modelVersion>

    <artifactId>lagou-edu-daoartifactId>

    <dependencies>
        <dependency>
            <groupId>com.rendagroupId>
            <artifactId>lagou-edu-entityartifactId>
            <version>1.0-SNAPSHOTversion>
        dependency>
    dependencies>

project>
子模块 `lagou-edu-service`

Web 工程，暴露服务的接口和实现，依赖于 lagou-edu-dao

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">
    <parent>
        <artifactId>lagou-edu-parentartifactId>
        <groupId>com.rendagroupId>
        <version>1.0-SNAPSHOTversion>
    parent>
    <modelVersion>4.0.0modelVersion>

    <artifactId>lagou-edu-serviceartifactId>

    <packaging>warpackaging>

    <dependencies>
        <dependency>
            <groupId>com.rendagroupId>
            <artifactId>lagou-edu-daoartifactId>
            <version>1.0-SNAPSHOTversion>
        dependency>
    dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.tomcat.mavengroupId>
                <artifactId>tomcat7-maven-pluginartifactId>
                <configuration>
                    <port>8001port>
                    <path>/path>
                configuration>
                <executions>
                    <execution>
                        
                        <phase>packagephase>
                        <goals>
                            <goal>rungoal>
                        goals>
                    execution>
                executions>
            plugin>
        plugins>
    build>

project>
服务消费方项目搭建
`lagou-edu-web`

Web 工程，消费服务，依赖于 lagou-edu-entity

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>4.0.0modelVersion>

    <groupId>com.rendagroupId>
    <artifactId>lagou-edu-webartifactId>
    <version>1.0-SNAPSHOTversion>

    <packaging>warpackaging>

    
    <properties>
        <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
        <maven.compiler.encoding>UTF-8maven.compiler.encoding>
        <java.version>1.11java.version>
        <maven.compiler.source>11maven.compiler.source>
        <maven.compiler.target>11maven.compiler.target>
        <spring.version>5.0.6.RELEASEspring.version>
    properties>

    <dependencies>
        <dependency>
            <groupId>com.rendagroupId>
            <artifactId>lagou-edu-entityartifactId>
            <version>1.0-SNAPSHOTversion>
        dependency>
        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-contextartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-beansartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-webmvcartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-jdbcartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-aspectsartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-testartifactId>
            <version>${spring.version}version>
            <scope>testscope>
        dependency>
        
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatisartifactId>
            <version>3.2.8version>
        dependency>
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatis-springartifactId>
            <version>1.3.2version>
        dependency>
        
        <dependency>
            <groupId>com.alibabagroupId>
            <artifactId>druidartifactId>
            <version>1.0.9version>
        dependency>
        
        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>5.1.32version>
        dependency>
        
        <dependency>
            <groupId>com.alibabagroupId>
            <artifactId>dubboartifactId>
            <version>2.5.7version>
        dependency>
        
        <dependency>
            <groupId>org.apache.zookeepergroupId>
            <artifactId>zookeeperartifactId>
            <version>3.4.6version>
        dependency>
        
        <dependency>
            <groupId>com.github.sgroschupfgroupId>
            <artifactId>zkclientartifactId>
            <version>0.1version>
        dependency>
        <dependency>
            <groupId>javassistgroupId>
            <artifactId>javassistartifactId>
            <version>3.11.0.GAversion>
        dependency>
        
        <dependency>
            <groupId>com.alibabagroupId>
            <artifactId>fastjsonartifactId>
            <version>1.2.47version>
        dependency>
        
        <dependency>
            <groupId>junitgroupId>
            <artifactId>junitartifactId>
            <version>4.12version>
            <scope>testscope>
        dependency>
        
        <dependency>
            <groupId>org.springframework.datagroupId>
            <artifactId>spring-data-redisartifactId>
            <version>2.3.2.RELEASEversion>
        dependency>
        
        <dependency>
            <groupId>redis.clientsgroupId>
            <artifactId>jedisartifactId>
            <version>3.1.0version>
        dependency>
        
        <dependency>
            <groupId>com.fasterxml.jackson.coregroupId>
            <artifactId>jackson-databindartifactId>
            <version>2.9.8version>
        dependency>
        <dependency>
            <groupId>com.thetransactioncompanygroupId>
            <artifactId>cors-filterartifactId>
            <version>2.5version>
        dependency>
        
        <dependency>
            <groupId>javax.servletgroupId>
            <artifactId>servlet-apiartifactId>
            <version>2.4version>
            <scope>providedscope>
        dependency>
        
        <dependency>
            <groupId>org.apache.httpcomponentsgroupId>
            <artifactId>httpclientartifactId>
            <version>4.5.12version>
        dependency>
        <dependency>
            <groupId>com.github.wxpaygroupId>
            <artifactId>wxpay-sdkartifactId>
            <version>0.0.3version>
        dependency>
        <dependency>
            <groupId>com.jfinalgroupId>
            <artifactId>jfinalartifactId>
            <version>3.5version>
        dependency>
        
        <dependency>
            <groupId>com.thetransactioncompanygroupId>
            <artifactId>cors-filterartifactId>
            <version>2.5version>
        dependency>
    dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.tomcat.mavengroupId>
                <artifactId>tomcat7-maven-pluginartifactId>
                <configuration>
                    <port>8002port>
                    <path>/path>
                configuration>
                <executions>
                    <execution>
                        
                        <phase>packagephase>
                        <goals>
                            <goal>rungoal>
                        goals>
                    execution>
                executions>
            plugin>
        plugins>
    build>

project>

src\main\webapp\WEB-INF\web.xml

<?xml  version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://xmlns.jcp.org/xml/ns/javaee"xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"id="WebApp_ID" version="3.1">
    
    <filter>
        <filter-name>charsetfilter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
        <init-param>
            <param-name>encodingparam-name>
            <param-value>utf-8param-value>
        init-param>
        <init-param>
            <param-name>forceEncodingparam-name>
            <param-value>trueparam-value>
        init-param>
    filter>
    <filter-mapping>
        <filter-name>charsetfilter-name>
        <url-pattern>/*url-pattern>
    filter-mapping>

    
    <filter>
        <filter-name>corsFitlerfilter-name>
        <filter-class>com.thetransactioncompany.cors.CORSFilterfilter-class>
    filter>
    <filter-mapping>
        <filter-name>corsFitlerfilter-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:spring/spring-consumer.xmlparam-value>
        init-param>
    servlet>
    <servlet-mapping>
        <servlet-name>springMVCservlet-name>
        <url-pattern>/url-pattern>
    servlet-mapping>
web-app>

src\main\resources\spring\spring-consumer.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"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/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd
       http://code.alibabatech.com/schema/dubbo
       http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

    
    <mvc:annotation-driven>
        <mvc:message-converters register-defaults="true">
            <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
                <property name="supportedMediaTypes" value="application/json"/>
                <property name="features">
                    <array>
                        <value>WriteMapNullValuevalue>
                        <value>WriteDateUseDateFormatvalue>
                    array>
                property>
            bean>
        mvc:message-converters>
    mvc:annotation-driven>

    
    <dubbo:application name="lagou-edu-web"/>

    
    <dubbo:registry address="zookeeper://192.168.186.128:2181"/>

    
    <dubbo:annotation package="com.renda"/>

beans>

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