工作中我们会遇到这样的一种场景，就是写好的代码封包给别的部门使用或者项目使用，如果我们此时按照正常的打包流程的话，对方是可以使用maven引入包的，但是包内的类却无法引入使用，此时就需要我们下面所说的这种方式来解决

完整代码可参考GitHub，或者点击原文链接

https://github.com/zuiyu-main/springboot-demo/tree/master/springboot-license

问题

maven可以引入，却不能 import 类使用

解决

首先还是新建一个模块测试，license-common,修改pom.xml中的打包插件为下面这种

    <groupId>com.zuiyu</groupId>
    <artifactId>license-common</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>license-common</name>
    
<build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
        </plugins>
    </build>

执行idea中的打包，也就是mvn install

需要该模块代码的项目pom中加入

    <dependency>
            <groupId>com.zuiyu</groupId>
            <artifactId>license-common</artifactId>
            <version>0.0.1-SNAPSHOT</version>
            <scope>compile</scope>
        </dependency>

总结

完整的核心pom文件如下,只保留打包相关

license-common

<?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>
    <groupId>com.zuiyu</groupId>
    <artifactId>license-common</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>license-common</name>
    <description>license-client</description>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

License-client

<?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>
    <groupId>com.zuiyu</groupId>
    <artifactId>client</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>license-client</name>
    <description>license-client</description>

    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <spring-boot.version>2.1.18.RELEASE</spring-boot.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.zuiyu</groupId>
            <artifactId>license-common</artifactId>
            <version>0.0.1-SNAPSHOT</version>
            <scope>compile</scope>
        </dependency>
    </dependencies>

</project>