奥展项目笔记04--Spring cloud 通过父工程打包多个子工程，导出可运行的Jar包

在spring cloud微服务搭建过程中，我们创建了多个微服务模块，如图：

1.父工程Pom文件

<?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>lucky.aozhan.parent</groupId>
    <artifactId>aozhan</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>anzhan-registry</module>
        <module>aozhan-common</module>
        <module>aozhan-gateway</module>
        <module>aozhan-user</module>
        <module>aozhan-sms-service</module>
        <module>aozhan-auth</module>
    </modules>

    <name>aozhan</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.7.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <spring-cloud.version>Greenwich.SR2</spring-cloud.version>
        <mybatis.starter.version>1.3.2</mybatis.starter.version>
        <mapper.starter.version>2.0.2</mapper.starter.version>
        <druid.starter.version>1.1.9</druid.starter.version>
        <mysql.version>5.1.32</mysql.version>
        <pageHelper.starter.version>1.2.3</pageHelper.starter.version>
        <leyou.latest.version>1.0.0-SNAPSHOT</leyou.latest.version>
        <fastDFS.client.version>1.26.1-RELEASE</fastDFS.client.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <!-- springCloud -->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!-- mybatis启动器 -->
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>${mybatis.starter.version}</version>
            </dependency>
            <!-- 通用Mapper启动器 -->
            <dependency>
                <groupId>tk.mybatis</groupId>
                <artifactId>mapper-spring-boot-starter</artifactId>
                <version>${mapper.starter.version}</version>
            </dependency>
            <!-- 分页助手启动器 -->
            <dependency>
                <groupId>com.github.pagehelper</groupId>
                <artifactId>pagehelper-spring-boot-starter</artifactId>
                <version>${pageHelper.starter.version}</version>
            </dependency>
            <!-- mysql驱动 -->
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>${mysql.version}</version>
            </dependency>
            <!--FastDFS客户端-->
            <dependency>
                <groupId>com.github.tobato</groupId>
                <artifactId>fastdfs-client</artifactId>
                <version>${fastDFS.client.version}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>
    


</project>

2.修改子模块

(1)若子模块还是聚合工程，以aozhan-urer这个微服务为例：

 

aozhan-user-interface模块是公共类(model、实体类、utils),aozhan-user-service这个模块依赖aozhan-user-interface模块。

aozhan-user-interface模块pom不能引入spring-boot-maven-plugin插件。

<build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>
        </plugins>
    </build>

spring-boot-maven-plugin打包出来的jar是不可依赖的,这个插件会在Maven的package后进行二次打包，目的为了生成可执行jar包，正是因为产生了可执行jar包，所以A项目打包时就找不到B项目的类。

aozhan-user-service模块pom要引入spring-boot-maven-plugin插件，这个插件主要是构建可执行的jar。

(2)若子模块不是聚合工程，以aozhan-registry这个微服务为例：

pom文件为：

<?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>aozhan</artifactId>
        <groupId>lucky.aozhan.parent</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <groupId>lucky.aozhan.common</groupId>
    <artifactId>anzhan-registry</artifactId>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>
        </plugins>
    </build>



</project>

3.打包springcloud项目

idea的控制台中输入：

mvn clean package 

打包结果如下，则表示成功：

在taget下就会生成一个jar包，这就算大功告成啦。

参考文献：https://blog.csdn.net/quanqxj/article/details/80584629