报错提示如下，这是子模块large_screen调用login_security模块时，找不到login_security的包，但是login_security能单独打包成功

项目结构，两个子模块可以启动

解决办法：
父pom,要用 <packaging>pom</packaging>，并且build里面需要添加 <configuration> <classifier>exec</classifier></configuration>

<?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>2.7.12</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.webro</groupId>
    <artifactId>tea_admin</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>pom</packaging>
    <name>tea_admin</name>
    <description>tea_admin</description>
    <modules>
        <module>large_screen</module>
        <module>login_security</module>
    </modules>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration> <classifier>exec</classifier></configuration>
            </plugin>
        </plugins>
    </build>

</project>

子模块pom要用<packaging>jar</packaging>或者<packaging>war</packaging>

此时再把Test模式置灰，跳过测试模块，然后在重新加载依赖，执行clean，执行package，就能打包成功

完美解决

参考博客：https://www.jianshu.com/p/b8f90b5ae79a