使用坐标导入jar包1) 在pom.xml中编写<dependencies>标签2) 在<dependencies>标签中使用<dependency>引入坐标3) 定义坐标的groupId、artifactId、version
<dependencies><!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>8.0.27</version></dependency></dependencies>
4) 点击红色方框的刷新按钮，使坐标生效
**IDEA创建maven后提示Unable to import maven project: See logs for details
换了一下低版本的maven之后解决**
