导入maven的项目上有红叉,说明eclipse里maven的插件该更新了1、help里选择install new software2、点击add,输入name:MavenArchiver, location里输入https://otto.takari.io/content/sites/m2e.extras/m2eclipse-mavenarchiver/0.17.2/N/LATEST3、一路next,重启eclipse即可