[Java知识库]搭建商城的微服务架构-1

创建父项目 mall

先创建一个"父项目"mall,再在这个父项目中创建多个子项目

• 修改pom文件

最终mall的pom文件如下

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 ?  <modelVersion>4.0.0</modelVersion>
 ?  <parent>
 ? ? ?  <groupId>org.springframework.boot</groupId>
 ? ? ?  <artifactId>spring-boot-starter-parent</artifactId>
 ? ? ?  <version>2.5.4</version>
 ? ? ?  <relativePath/> <!-- lookup parent from repository -->
 ?  </parent>
 ?  <groupId>com.taobao</groupId>
 ?  <artifactId>mall</artifactId>
 ?  <version>0.0.1-SNAPSHOT</version>
 ?  <name>mall</name>
 ?  <description>Demo project for Spring Boot</description>
 ?  <!-- ? 当前项目会以一个pom文件的形式被子项目继承 ? -->
 ?  <packaging>pom</packaging>
</project>

创建子项目

创建mall-stock项目

在父项目的pom文件中,编写子项目的存在

<!--  表示当前项目是一个父项目,以pom文件的形式,供子项目继承  -->
<packaging>pom</packaging>
<!--  当前父项目包含的所有模块  -->
<modules>
 ?  <module>mall-stock</module>
</modules>

子项目pom文件修改后

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 ?  <modelVersion>4.0.0</modelVersion>
 ?  <parent>
 ? ? ?  <groupId>com.taobao</groupId>
 ? ? ?  <artifactId>mall</artifactId>
 ? ? ?  <version>0.0.1-SNAPSHOT</version>
 ? ? ?  <relativePath/> <!-- lookup parent from repository -->
 ?  </parent>
 ?  <groupId>com.taobao</groupId>
 ?  <artifactId>mall-stock</artifactId>
 ?  <version>0.0.1-SNAPSHOT</version>
 ?  <name>mall-stock</name>
 ?  <description>Demo project for Spring Boot</description>
 ?  <dependencies>
 ? ? ?  <dependency>
 ? ? ? ? ?  <groupId>org.springframework.boot</groupId>
 ? ? ? ? ?  <artifactId>spring-boot-starter</artifactId>
 ? ? ?  </dependency>
 ?  </dependencies>
</project>

父子相认完成

这样当前子项目就可以读取父项目中的pom文件信息了

父项目管理依赖版本

这样做可以统一所有子项目的版本,在更新版本时,只需要修改父项目中定义的版本号即可

父项目的pom文件添加如下内容

<!--  定义父项目需要的版本号参数 ? -->
<properties>
 ?  <mybatis.version>2.2.2</mybatis.version>
</properties>
<!-- ? dependencyManagement不是添加依赖,而是确定子项目使用依赖时的版本,也称锁版本  -->
<dependencyManagement>
 ?  <dependencies>
 ? ? ?  <dependency>
 ? ? ? ? ?  <groupId>org.mybatis.spring.boot</groupId>
 ? ? ? ? ?  <artifactId>mybatis-spring-boot-starter</artifactId>
 ? ? ? ? ?  <version>${mybatis.version}</version>
 ? ? ?  </dependency>
 ?  </dependencies>
</dependencyManagement>

子项目中如果需要mybatis的依赖只需要添加如下内容即可,无需再指定版本号

<dependency>
 ?  <groupId>org.mybatis.spring.boot</groupId>
 ?  <artifactId>mybatis-spring-boot-starter</artifactId>
</dependency>

父项目完整pom文件如下

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.5.9</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.taobao</groupId>
    <artifactId>mall</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>mall</name>
    <description>Demo project for Spring Boot</description>
    <!--  表示当前项目是一个父项目,以pom文件的形式,供子项目继承  -->
    <packaging>pom</packaging>
    <!--  当前父项目包含的所有模块,module就是模块的意思  -->
    <modules>
        <module>mall-stock</module>
    </modules>
    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>2020.0.3</spring-cloud.version>
        <spring-cloud-alibaba.version>2.2.2.RELEASE</spring-cloud-alibaba.version>
        <spring-boot.version>2.5.4</spring-boot.version>
        <spring-boot-configuration-processor.version>2.3.0.RELEASE</spring-boot-configuration-processor.version>
        <spring-security-jwt.version>1.0.10.RELEASE</spring-security-jwt.version>
        <mybatis-spring-boot.version>2.2.0</mybatis-spring-boot.version>
        <mybaits-plus.version>3.4.1</mybaits-plus.version>
        <pagehelper-spring-boot.version>1.4.0</pagehelper-spring-boot.version>
        <mysql.version>8.0.26</mysql.version>
        <lombok.version>1.18.20</lombok.version>
        <knife4j-spring-boot.version>2.0.9</knife4j-spring-boot.version>
        <spring-rabbit-test.version>2.3.10</spring-rabbit-test.version>
        <spring-security-test.version>5.5.2</spring-security-test.version>
        <fastjson.version>1.2.45</fastjson.version>
        <druid.version>1.1.20</druid.version>
        <jjwt.version>0.9.0</jjwt.version>
        <seata-server.version>1.4.2</seata-server.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>
    <!-- 依赖管理 -->
    <dependencyManagement>
        <dependencies>
            <!--seata-all-->
            <dependency>
                <groupId>io.seata</groupId>
                <artifactId>seata-all</artifactId>
                <version>${seata-server.version}</version>
            </dependency>
            <!-- Lombok -->
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>${lombok.version}</version>
            </dependency>
            <!-- MySQL -->
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>${mysql.version}</version>
                <scope>runtime</scope>
            </dependency>
            <!-- Alibaba Druid -->
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>${druid.version}</version>
            </dependency>
            <!-- MyBatis Spring Boot：数据访问层MyBatis编程 -->
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>${mybatis-spring-boot.version}</version>
            </dependency>
            <!-- MyBatis Plus Spring Boot：MyBatis增强 -->
            <dependency>
                <groupId>com.baomidou</groupId>
                <artifactId>mybatis-plus-boot-starter</artifactId>
                <version>${mybaits-plus.version}</version>
            </dependency>
            <!-- MyBatis Plus Generator：代码生成器 -->
            <dependency>
                <groupId>com.baomidou</groupId>
                <artifactId>mybatis-plus-generator</artifactId>
                <version>${mybaits-plus.version}</version>
            </dependency>
            <!-- PageHelper Spring Boot：MyBatis分页 -->
            <dependency>
                <groupId>com.github.pagehelper</groupId>
                <artifactId>pagehelper-spring-boot-starter</artifactId>
                <version>${pagehelper-spring-boot.version}</version>
            </dependency>
            <!-- Spring Boot：基础框架 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter</artifactId>
                <version>${spring-boot.version}</version>
            </dependency>
            <!-- Spring Boot Web：WEB应用 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
                <version>${spring-boot.version}</version>
            </dependency>
            <!-- Spring Boot Freemarker：MyBaits Plus Generator的辅助项 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-freemarker</artifactId>
                <version>${spring-boot.version}</version>
            </dependency>
            <!-- Spring Boot Validation：验证请求参数 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-validation</artifactId>
                <version>${spring-boot.version}</version>
            </dependency>
            <!-- Spring Boot Security：认证授权 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-security</artifactId>
                <version>${spring-boot.version}</version>
            </dependency>
            <!-- Spring Boot Oauth2：认证授权 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-oauth2-client</artifactId>
                <version>${spring-boot.version}</version>
            </dependency>
            <!-- Spring Boot配置处理器 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-configuration-processor</artifactId>
                <version>${spring-boot-configuration-processor.version}</version>
            </dependency>
            <!-- Spring Security JWT -->
            <dependency>
                <groupId>org.springframework.security</groupId>
                <artifactId>spring-security-jwt</artifactId>
                <version>${spring-security-jwt.version}</version>
            </dependency>
            <!-- Knife4j Spring Boot：在线API -->
            <dependency>
                <groupId>com.github.xiaoymin</groupId>
                <artifactId>knife4j-spring-boot-starter</artifactId>
                <version>${knife4j-spring-boot.version}</version>
            </dependency>
            <!-- Spring Boot Data Redis：缓存 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-data-redis</artifactId>
                <version>${spring-boot.version}</version>
            </dependency>
            <!-- Spring Boot Data MongoDB：缓存 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-data-mongodb</artifactId>
                <version>${spring-boot.version}</version>
            </dependency>
            <!-- Spring Boot Data Elasticsearch：文档搜索 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-data-elasticsearch</artifactId>
                <version>${spring-boot.version}</version>
            </dependency>
            <!-- Spring Boot AMQP：消息队列 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-amqp</artifactId>
                <version>${spring-boot.version}</version>
            </dependency>
            <!-- Spring Boot Actuator：健康监测 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
                <version>${spring-boot.version}</version>
            </dependency>
            <!-- Spring Cloud家族 -->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!-- Spring Cloud Alibaba -->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${spring-cloud-alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!-- Alibaba FastJson -->
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>${fastjson.version}</version>
            </dependency>
            <!-- JJWT -->
            <dependency>
                <groupId>io.jsonwebtoken</groupId>
                <artifactId>jjwt</artifactId>
                <version>${jjwt.version}</version>
            </dependency>
            <!-- Spring Boot Test：测试 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <version>${spring-boot.version}</version>
                <scope>test</scope>
            </dependency>
            <!-- Spring Rabbit Test：消息队列测试 -->
            <dependency>
                <groupId>org.springframework.amqp</groupId>
                <artifactId>spring-rabbit-test</artifactId>
                <version>${spring-rabbit-test.version}</version>
                <scope>test</scope>
            </dependency>
            <!-- Spring Security Test：Security测试 -->
            <dependency>
                <groupId>org.springframework.security</groupId>
                <artifactId>spring-security-test</artifactId>
                <version>${spring-security-test.version}</version>
                <scope>test</scope>
            </dependency>
            <!--seata整合springboot-->
            <dependency>
                <groupId>io.seata</groupId>
                <artifactId>seata-spring-boot-starter</artifactId>
                <version>${seata-server.version}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>
</project>

创建通用模块(项目)commons

父子相认

<module>mall-commons</module>

子项目pom文件最终如下

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 ?  <modelVersion>4.0.0</modelVersion>
 ?  <parent>
 ? ? ?  <groupId>com.taobao/groupId>
 ? ? ?  <artifactId>mall</artifactId>
 ? ? ?  <version>0.0.1-SNAPSHOT</version>
 ? ? ?  <relativePath/> <!-- lookup parent from repository -->
 ?  </parent>
 ?  <groupId>com.taobao</groupId>
 ?  <artifactId>mall-commons</artifactId>
 ?  <version>0.0.1-SNAPSHOT</version>
 ?  <name>mall-commons</name>
 ?  <description>Demo project for Spring Boot</description>
 ?  <dependencies>
 ? ? ?  <!--在线api文档-->
 ? ? ?  <dependency>
 ? ? ? ? ?  <groupId>com.github.xiaoymin</groupId>
 ? ? ? ? ?  <artifactId>knife4j-spring-boot-starter</artifactId>
 ? ? ?  </dependency>
 ? ? ?  <!-- Spring Boot Web：WEB应用 -->
 ? ? ?  <dependency>
 ? ? ? ? ?  <groupId>org.springframework.boot</groupId>
 ? ? ? ? ?  <artifactId>spring-boot-starter-web</artifactId>
 ? ? ? ? ?  <exclusions>
 ? ? ? ? ? ? ?  <exclusion>
 ? ? ? ? ? ? ? ? ?  <groupId>org.springframework.boot</groupId>
 ? ? ? ? ? ? ? ? ?  <artifactId>spring-boot-starter</artifactId>
 ? ? ? ? ? ? ?  </exclusion>
 ? ? ? ? ? ? ?  <exclusion>
 ? ? ? ? ? ? ? ? ?  <groupId>org.springframework.boot</groupId>
 ? ? ? ? ? ? ? ? ?  <artifactId>spring-boot-starter-json</artifactId>
 ? ? ? ? ? ? ?  </exclusion>
 ? ? ? ? ? ? ?  <exclusion>
 ? ? ? ? ? ? ? ? ?  <groupId>org.springframework.boot</groupId>
 ? ? ? ? ? ? ? ? ?  <artifactId>spring-boot-starter-tomcat</artifactId>
 ? ? ? ? ? ? ?  </exclusion>
 ? ? ? ? ?  </exclusions>
 ? ? ?  </dependency>
 ?  </dependencies>
?
</project>

当前模块只是编写通用类和代码