Description Resource Path Location Type Target runtime Apache Tomcat v8.0 is not defined.

首先检查Problems 点击项目，Window——Show View——problems。查看错误 如果是Description Resource Path Location Type Target runtime Apache Tomcat v8.0 is not defined. 项目检出后，发现是Tomcat8 发布的，修改文件： 选中项目，点击右键——Show In——Navigator

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