IDEA中为已有项目新增maven：②把自己工程的jar换成maven配置

第一步：配置阿里云的代理

<mirror>   <id>aliyunmaven</id>   <mirrorOf>*</mirrorOf>   <name>阿里云公共仓库</name>   <url>https://maven.aliyun.com/repository/public</url> </mirror>

第二步：去https://search.maven.org/网站，根据jar文件名，去搜索自己想要的版本的jar， 然后获取其<dependency/>

第三步：根据获取的<dependency/>去配置项目的POM.xml，然后通过install来从阿里云获取自己的jar文件

<?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.spring</groupId>     <artifactId>SpringLearn_Space</artifactId>     <version>1.0-SNAPSHOT</version>     <dependencies>         <dependency>             <groupId>org.springframework</groupId>             <artifactId>spring-aop</artifactId>             <version>5.2.8.RELEASE</version>         </dependency>         <dependency>             <groupId>org.springframework</groupId>             <artifactId>spring-aspects</artifactId>             <version>5.2.8.RELEASE</version>         </dependency>         <dependency>             <groupId>org.springframework</groupId>             <artifactId>spring-beans</artifactId>             <version>5.2.8.RELEASE</version>         </dependency>         <dependency>             <groupId>org.springframework</groupId>             <artifactId>spring-beans</artifactId>             <version>5.2.8.RELEASE</version>         </dependency>         <dependency>             <groupId>org.springframework</groupId>             <artifactId>spring-context-support</artifactId>             <version>5.2.8.RELEASE</version>         </dependency>         <dependency>             <groupId>org.springframework</groupId>             <artifactId>spring-context-support</artifactId>             <version>5.2.8.RELEASE</version>         </dependency>         <dependency>             <groupId>org.springframework</groupId>             <artifactId>spring-context-support</artifactId>             <version>5.2.8.RELEASE</version>         </dependency>         <dependency>             <groupId>org.springframework</groupId>             <artifactId>spring-instrument</artifactId>             <version>5.2.8.RELEASE</version>         </dependency>         <dependency>             <groupId>org.springframework</groupId>             <artifactId>spring-jdbc</artifactId>             <version>5.2.8.RELEASE</version>         </dependency>         <dependency>             <groupId>org.springframework</groupId>             <artifactId>spring-orm</artifactId>             <version>5.2.8.RELEASE</version>         </dependency>         <dependency>             <groupId>org.springframework</groupId>             <artifactId>spring-oxm</artifactId>             <version>5.2.8.RELEASE</version>         </dependency>         <dependency>             <groupId>org.springframework</groupId>             <artifactId>spring-oxm</artifactId>             <version>5.2.8.RELEASE</version>         </dependency>         <dependency>             <groupId>org.springframework</groupId>             <artifactId>spring-tx</artifactId>             <version>5.2.8.RELEASE</version>         </dependency>         <dependency>             <groupId>aopalliance</groupId>             <artifactId>aopalliance</artifactId>             <version>1.0</version>         </dependency>         <dependency>             <groupId>org.aspectj</groupId>             <artifactId>aspectjrt</artifactId>             <version>1.9.6</version>         </dependency>         <!--<dependency>             <groupId>org.aspectj</groupId>             <artifactId>aspectjtools</artifactId>             <version>1.9.6</version>         </dependency>-->         <dependency>             <groupId>aspectj</groupId>             <artifactId>aspectjtools</artifactId>             <version>1.5.4</version>         </dependency>         <!--<dependency>             <groupId>org.aspectj</groupId>             <artifactId>aspectjweaver</artifactId>             <version>1.9.6</version>         </dependency>-->         <dependency>             <groupId>aspectj</groupId>             <artifactId>aspectjweaver</artifactId>             <version>1.5.4</version>         </dependency>         <dependency>             <groupId>com.mchange</groupId>             <artifactId>c3p0</artifactId>             <version>0.9.5.5</version>         </dependency>         <dependency>             <groupId>commons-logging</groupId>             <artifactId>commons-logging</artifactId>             <version>1.2</version>         </dependency>         <dependency>             <groupId>com.mchange</groupId>             <artifactId>mchange-commons-java</artifactId>             <version>0.2.20</version>         </dependency>         <dependency>             <groupId>mysql</groupId>             <artifactId>mysql-connector-java</artifactId>             <version>8.0.21</version>         </dependency>     </dependencies> </project>

第四步：可以把工程的jar包删除了；