maven聚合分布式架构_Dubbo 分布式架构搭建教育 PC 站

痛定思痛。 2022-10-25 14:09 161阅读 0赞

![9fb06413b20551ef49216a0ffcd4583b.png][]

## **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>4.0.0</modelVersion>
    
        <groupId>com.renda</groupId>
        <artifactId>lagou-edu-parent</artifactId>
        <version>1.0-SNAPSHOT</version>
        <modules>
            <module>lagou-edu-entity</module>
            <module>lagou-edu-dao</module>
            <module>lagou-edu-service</module>
        </modules>
    
        <packaging>pom</packaging>
    
        
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <maven.compiler.encoding>UTF-8</maven.compiler.encoding>
            <java.version>1.11</java.version>
            <maven.compiler.source>11</maven.compiler.source>
            <maven.compiler.target>11</maven.compiler.target>
            <spring.version>5.0.6.RELEASE</spring.version>
        </properties>
    
        <dependencies>
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-beans</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-webmvc</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-jdbc</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-aspects</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-test</artifactId>
                <version>${spring.version}</version>
                <scope>test</scope>
            </dependency>
            
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>3.2.8</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis-spring</artifactId>
                <version>1.3.2</version>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>1.0.9</version>
            </dependency>
            
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.1.32</version>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>dubbo</artifactId>
                <version>2.5.7</version>
            </dependency>
            
            <dependency>
                <groupId>org.apache.zookeeper</groupId>
                <artifactId>zookeeper</artifactId>
                <version>3.4.6</version>
            </dependency>
            
            <dependency>
                <groupId>com.github.sgroschupf</groupId>
                <artifactId>zkclient</artifactId>
                <version>0.1</version>
            </dependency>
            <dependency>
                <groupId>javassist</groupId>
                <artifactId>javassist</artifactId>
                <version>3.11.0.GA</version>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>1.2.47</version>
            </dependency>
            
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>4.12</version>
                <scope>test</scope>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.data</groupId>
                <artifactId>spring-data-redis</artifactId>
                <version>2.3.2.RELEASE</version>
            </dependency>
            
            <dependency>
                <groupId>redis.clients</groupId>
                <artifactId>jedis</artifactId>
                <version>3.1.0</version>
            </dependency>
            
            <dependency>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-databind</artifactId>
                <version>2.9.8</version>
            </dependency>
        </dependencies>
    
    </project>

### **子模块 \`lagou-edu-entity\`** ###

Jar 工程，封装实体类

`pom.xml`

### **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`

### **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`

### **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>4.0.0</modelVersion>
    
        <groupId>com.renda</groupId>
        <artifactId>lagou-edu-web</artifactId>
        <version>1.0-SNAPSHOT</version>
    
        <packaging>war</packaging>
    
        
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <maven.compiler.encoding>UTF-8</maven.compiler.encoding>
            <java.version>1.11</java.version>
            <maven.compiler.source>11</maven.compiler.source>
            <maven.compiler.target>11</maven.compiler.target>
            <spring.version>5.0.6.RELEASE</spring.version>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>com.renda</groupId>
                <artifactId>lagou-edu-entity</artifactId>
                <version>1.0-SNAPSHOT</version>
            </dependency>
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-beans</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-webmvc</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-jdbc</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-aspects</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-test</artifactId>
                <version>${spring.version}</version>
                <scope>test</scope>
            </dependency>
            
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>3.2.8</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis-spring</artifactId>
                <version>1.3.2</version>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>1.0.9</version>
            </dependency>
            
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.1.32</version>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>dubbo</artifactId>
                <version>2.5.7</version>
            </dependency>
            
            <dependency>
                <groupId>org.apache.zookeeper</groupId>
                <artifactId>zookeeper</artifactId>
                <version>3.4.6</version>
            </dependency>
            
            <dependency>
                <groupId>com.github.sgroschupf</groupId>
                <artifactId>zkclient</artifactId>
                <version>0.1</version>
            </dependency>
            <dependency>
                <groupId>javassist</groupId>
                <artifactId>javassist</artifactId>
                <version>3.11.0.GA</version>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>1.2.47</version>
            </dependency>
            
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>4.12</version>
                <scope>test</scope>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.data</groupId>
                <artifactId>spring-data-redis</artifactId>
                <version>2.3.2.RELEASE</version>
            </dependency>
            
            <dependency>
                <groupId>redis.clients</groupId>
                <artifactId>jedis</artifactId>
                <version>3.1.0</version>
            </dependency>
            
            <dependency>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-databind</artifactId>
                <version>2.9.8</version>
            </dependency>
            <dependency>
                <groupId>com.thetransactioncompany</groupId>
                <artifactId>cors-filter</artifactId>
                <version>2.5</version>
            </dependency>
            
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>servlet-api</artifactId>
                <version>2.4</version>
                <scope>provided</scope>
            </dependency>
            
            <dependency>
                <groupId>org.apache.httpcomponents</groupId>
                <artifactId>httpclient</artifactId>
                <version>4.5.12</version>
            </dependency>
            <dependency>
                <groupId>com.github.wxpay</groupId>
                <artifactId>wxpay-sdk</artifactId>
                <version>0.0.3</version>
            </dependency>
            <dependency>
                <groupId>com.jfinal</groupId>
                <artifactId>jfinal</artifactId>
                <version>3.5</version>
            </dependency>
            
            <dependency>
                <groupId>com.thetransactioncompany</groupId>
                <artifactId>cors-filter</artifactId>
                <version>2.5</version>
            </dependency>
        </dependencies>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.apache.tomcat.maven</groupId>
                    <artifactId>tomcat7-maven-plugin</artifactId>
                    <configuration>
                        <port>8002</port>
                        <path>/</path>
                    </configuration>
                    <executions>
                        <execution>
                            
                            <phase>package</phase>
                            <goals>
                                <goal>run</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>
            </plugins>
        </build>
    
    </project>

`srcmainwebappWEB-INFweb.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>charset</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>
            <init-param>
                <param-name>forceEncoding</param-name>
                <param-value>true</param-value>
            </init-param>
        </filter>
        <filter-mapping>
            <filter-name>charset</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
    
        
        <filter>
            <filter-name>corsFitler</filter-name>
            <filter-class>com.thetransactioncompany.cors.CORSFilter</filter-class>
        </filter>
        <filter-mapping>
            <filter-name>corsFitler</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:spring/spring-consumer.xml</param-value>
            </init-param>
        </servlet>
        <servlet-mapping>
            <servlet-name>springMVC</servlet-name>
            <url-pattern>/</url-pattern>
        </servlet-mapping>
    </web-app>

`srcmainresourcesspringspring-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>WriteMapNullValue</value>
                            <value>WriteDateUseDateFormat</value>
                        </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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[9fb06413b20551ef49216a0ffcd4583b.png]: /images/20221024/50bac6f87589427f8f41cfc38900e923.png