【spring cloud】子模块module -->导入一个新的spring boot项目作为spring cloud的一个子模块微服务，怎么做/或者 每次导入一个新的spring boot项目，IDEA不识别子module，启动类无法启动/右下角没有蓝色图标

如题：导入一个新的spring boot项目作为spring cloud的一个子模块微服务，怎么做

或者说每次导入一个新的spring boot项目，IDEA不识别，启动类无法启动，怎么解决

下面分别展示[tx-manager只是作为例子进行操作，你可以把这个服务名字想象成例如springcloud-ms-xxx等等都可以]

一.只需要将一个spring boot服务识别为子模块，不会建立真正的父子依赖关系

将tx-Manager修改为本微服务组可以识别的子模块module

导入更新

成功识别为子module

二.需要建立真正父子依赖关系的 子模块识别

下面一起来走一遍这个流程：

1.将一个spring boot服务导入spring cloud中作为一个子模块

如图：这里有一个现成的spring cloud微服务集群，【如何创建一个spring cloud微服务：https://www.cnblogs.com/sxdcgaq8080/p/9035724.html】

然后

打开本服务根目录在资源管理器下：

可以看到根目录下的现有的两个ms 和parent的pom文件

然后将想要加入的外部的一个spring boot项目粘贴到此处【将tx-manager整个目录拷贝过来】

如下：

修该名字为统一的ms名字

这个时候，再打开idea ，看到

 

2.解决上面导入但是没有被识别的问题

所以先解决这个问题：

现将java目录设置为tx-manager这个微服务的跟路径

同理，设置resource目录为根资源路径

ok。现在就剩最后一个pom.xml文件的转变了

3.整理pom.xml文件内容，建立和最外层parent的pom之间的父子依赖关系

先看一下最外层的parent的pom.xml完整的依赖：

<?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.swapping</groupId>
    <artifactId>springcloud</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <!--
    注意 最后打包 最外层的pom 需要更改为 pom而不是jar
    <packaging>jar</packaging>
    -->
    <packaging>pom</packaging>

    <name>springcloud</name>
    <description>Demo project for Spring cloud</description>

    <modules>
        <module>springcloud-ms-eureka</module>
        <module>springcloud-ms-member</module>
    </modules>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.5.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>2.0.0.RELEASE</spring-cloud.version>
        <lcn.last.version>4.1.0</lcn.last.version>
    </properties>

    <dependencies>

        <!--========================spring boot 基础依赖  start ==============================-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!--========================spring boot 基础依赖  start ==============================-->

        <!--最外层 主项目 添加spring cloud依赖 https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter</artifactId>
            <version>${spring-cloud.version}</version>
        </dependency>







        <!-- ========================LCN 分布式事务 start============================-->
        <dependency>
            <groupId>com.codingapi</groupId>
            <artifactId>transaction-springcloud</artifactId>
            <version>${lcn.last.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>*</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>com.codingapi</groupId>
            <artifactId>tx-plugins-db</artifactId>
            <version>${lcn.last.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>*</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <!-- ========================LCN 分布式事务 END============================-->











        <!-- ========================    DB相关所有jar start =============================-->

        <!-- 数据库连接池 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.10</version>
        </dependency>


        <!-- 使用mysql数据库  -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>

        <!-- 假设 每一个子模块都会 使用 jpa 和 mybatis 操作数据库 才将相关jar放在父级pom中 -->

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


        <!-- mybatis -->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.2</version>
        </dependency>

        <!-- mybatis 分页插件 -->
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.2.5</version>
        </dependency>

        <!-- ========================   DB相关所有jar end =============================-->











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







        <!-- ======================== 公用  工具包 start ==============================-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.47</version>
        </dependency>


        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.8.1</version>
        </dependency>

        <dependency>
            <groupId>com.xiaoleilu</groupId>
            <artifactId>hutool-all</artifactId>
            <version>3.3.2</version>
        </dependency>

        <dependency>
            <groupId>com.belerweb</groupId>
            <artifactId>pinyin4j</artifactId>
            <version>2.5.1</version>
        </dependency>

        <!-- base64加密解密 -->
        <dependency>
            <groupId>org.apache.ws.commons.util</groupId>
            <artifactId>ws-commons-util</artifactId>
            <version>1.0.2</version>
        </dependency>

        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>22.0</version>
        </dependency>

        <!-- ======================== 公用  工具包 end ==============================-->

    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Finchley.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

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


</project>

再看一下现在的ms-member这个现成的子module的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.swapping</groupId>
    <artifactId>springcloud-ms-member</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>springcloud-ms-member</name>
    <description>ms-member is consumer ,transfer ms-order and ms-integral</description>

    <parent>
        <groupId>com.swapping</groupId>
        <artifactId>springcloud</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>


</project>

最后看一下现在的tx-manage的pom.xml依赖：

<?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.codingapi</groupId>
    <artifactId>tx-manager</artifactId>
    <version>4.2.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>tx-manager</name>
    <description>tx-manager</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.4.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>
        <maven.compile.source>1.7</maven.compile.source>
        <maven.compile.target>1.7</maven.compile.target>
        <java.version>1.7</java.version>

        <guava.version>19.0</guava.version>
        <spring-cloud.version>Dalston.SR1</spring-cloud.version>
        <maven.deploy.skip>true</maven.deploy.skip>
        <maven.install.skip>true</maven.install.skip>

    </properties>

    <dependencies>

        <dependency>
            <groupId>com.github.1991wangliang</groupId>
            <artifactId>lorne_core</artifactId>
            <version>1.0.0</version>
            <exclusions>
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>*</artifactId>
                </exclusion>
            </exclusions>
        </dependency>


        <dependency>
            <groupId>io.netty</groupId>
            <artifactId>netty-all</artifactId>
            <version>4.1.12.Final</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka-server</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>com.google.guava</groupId>
                    <artifactId>guava</artifactId>
                </exclusion>
            </exclusions>
        </dependency>


        <!--<dependency>-->
            <!--<groupId>org.springframework.cloud</groupId>-->
            <!--<artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>-->
        <!--</dependency>-->

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


        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-redis</artifactId>
            <version>1.3.8.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>${guava.version}</version>
        </dependency>

    </dependencies>


    <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>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>${maven-compiler-plugin.version}</version>
                <configuration>
                    <source>${maven.compile.source}</source>
                    <target>${maven.compile.target}</target>
                    <encoding>${project.build.sourceEncoding}</encoding>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-deploy-plugin</artifactId>
                <version>2.8.2</version>
                <configuration>
                    <skip>true</skip>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>2.6</version>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass>com.codingapi.tm.TxManagerApplication</mainClass>
                            <addClasspath>true</addClasspath>
                            <classpathPrefix>lib/</classpathPrefix>
                        </manifest>
                        <manifestEntries>
                            <Class-Path>./</Class-Path>
                        </manifestEntries>
                    </archive>
                    <excludes>
                        <exclude>config/**</exclude>
                    </excludes>
                </configuration>
            </plugin>

            <plugin>
                <artifactId>maven-assembly-plugin</artifactId>
                <configuration>
                    <appendAssemblyId>false</appendAssemblyId>
                    <descriptors>
                        <descriptor>src/main/build/package.xml</descriptor>
                    </descriptors>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>


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

        </plugins>
    </build>


</project>

然后将tx-manager的pom按照member的更改：

<?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.codingapi</groupId>
    <artifactId>springcloud-ms-tx-manager</artifactId>
    <version>4.2.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>springcloud-ms-tx-manager</name>
    <description>tx-manager, LCN's distributed transaction coordinator</description>

    <parent>
        <groupId>com.swapping</groupId>
        <artifactId>springcloud</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>

        <dependency>
            <groupId>com.github.1991wangliang</groupId>
            <artifactId>lorne_core</artifactId>
            <version>1.0.0</version>
            <exclusions>
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>*</artifactId>
                </exclusion>
            </exclusions>
        </dependency>


        <dependency>
            <groupId>io.netty</groupId>
            <artifactId>netty-all</artifactId>
            <version>4.1.12.Final</version>
        </dependency>
        
    </dependencies>



</project>

并且在parent的pom.xml文件新增tx-manager子模块

 

最后导入：点击import changes

 最后可以看到 这个子模块的pom文件终于被识别，并且父子依赖关系已经建立起来：

4.最后将tx-manager真正设立成子module，让子module的蓝色图标显示出来

到了这里，还不是真正的子模块

那如何让这个子模块的蓝色图标显示出来呢？

setting -->build,Execution,Deployment-->Build tools --> Maven -->Ignored Files -->勾选忽略的文件

取消勾选以后，就可以看到 子模块真正成功

至此，导入外部项目  即可成功 导入成子模块！！！并且被识别为子模块！！