1、建一个pom.xml文件

<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.companny.maven</groupId>
  <artifactId>hello</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <!-- 添加依赖 -->
  <dependencies>
   <dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.12</version>
    <scope>test</scope>
   </dependency>
  </dependencies>
</project>

 

2、在该pom.xml所在目录：

cmd下：输入以下命令：

mvn dependency:copy-dependencies

3、下载完成后的jar在dependency的目录下