學習 spring-cloud-aibaba附帶篇，項目拆分爲多模塊

把user-center項目拆分成三個模塊

• user-server：主要代碼邏輯
• user-client：對外接口
• user-common：存放公共java bean

1.項目整體效果

新建目錄的時候，記得把java包轉成Sources Root，把resources目錄轉成Resources Root

2 pom.xml 的改造

2.1 user.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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.6.RELEASE</version>
    </parent>

    <groupId>com.zc</groupId>
    <artifactId>user</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <name>user</name>

    <packaging>pom</packaging>

    <modules>
        <module>client</module>
        <module>server</module>
        <module>common</module>
    </modules>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Greenwich.SR2</spring-cloud.version>
        <spring-cloud-alibaba.version>0.9.0.RELEASE</spring-cloud-alibaba.version>
        <user-client.version>0.0.1-SNAPSHOT</user-client.version>
        <user-common.version>0.0.1-SNAPSHOT</user-common.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${spring-cloud-alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <dependency>
                <groupId>com.zc</groupId>
                <artifactId>user-client</artifactId>
                <version>${user-client.version}</version>
            </dependency>

            <dependency>
                <groupId>com.zc</groupId>
                <artifactId>user-common</artifactId>
                <version>${user-common.version}</version>
            </dependency>

        </dependencies>
    </dependencyManagement>

</project>

2.2 user-server.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>

    <parent>
        <groupId>com.zc</groupId>
        <artifactId>user</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <artifactId>user-server</artifactId>

    <dependencies>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!--數據庫相關-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.1.2</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.15</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.16</version>
        </dependency>

        <!--插件-->
        <!--<dependency>-->
            <!--<groupId>org.springframework.boot</groupId>-->
            <!--<artifactId>spring-boot-devtools</artifactId>-->
            <!--<scope>runtime</scope>-->
        <!--</dependency>-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

        <!-- redis -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>

        <!--引入另外兩個模塊-->
        <dependency>
            <groupId>com.zc</groupId>
            <artifactId>user-client</artifactId>
        </dependency>
        <dependency>
            <groupId>com.zc</groupId>
            <artifactId>user-common</artifactId>
        </dependency>

    </dependencies>

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

</project>

2.3 user-common.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>

    <parent>
        <groupId>com.zc</groupId>
        <artifactId>user</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <artifactId>user-common</artifactId>

    <dependencies>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
    </dependencies>

    
</project>

2.4 user-client.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>

    <parent>
        <groupId>com.zc</groupId>
        <artifactId>user</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <artifactId>user-client</artifactId>

    <dependencies>
        <dependency>
            <groupId>com.zc</groupId>
            <artifactId>user-common</artifactId>
        </dependency>
    </dependencies>
    
</project>

3.編譯和install項目

ctrl+F9 編譯項目，install -DskipTests 。這樣其它項目就可以依賴user-client了