菜单“Help->Eclipse Marketplace”
在Eclipse Marketplace窗口，输入m2e-apt查找，如下图：
点击安装，默认安装即可
2、配置注解解析菜单“Window->Preference”
找到“Maven->Annotation Processing”，选择“Automatically configure JDT APT”
3、参考
How to solve ClassNotFoundException: Cannot find implementation for xxx? · Issue #2527 · mapstruct/mapstruct · GitHubMapstruct、Lombok、Maven 和 Eclipse is my environment. But after I read #1159 projectlombok/lombok#1359 #929 #742 ... I still cannot find a way to solve the problem...https://github.com/mapstruct/mapstruct/issues/2527
