最近在搞一些关于springboot的项目，因为项目需要，所以经常会导入第三方的例子或者是一些码友的代码。
竟然pom.xml显示一个X ，然后就是Line:1
这个是什么问题呢？
查了一下，说是要装m2e-wtp
https://www.eclipse.org/m2e-wtp/
m2e-wtp features
- war project configuration : adds the Java and Dynamic Web Facets
- ejb project configuration : adds the Java and EJB Facets.
- ear project configuration : adds the EAR Facet. Supports application.xml and jboss.xml file generation
- rar project configuration : adds the Java and Connector Facets.
- app-client project configuration : adds the Java and Application Client Facets.
- jar dependency project configuration : adds the Java and Utility Facets.
- web-fragment project configuration : adds the Java and Web Fragment Facets if a web-fragment.xml file is detected.
- Optional configurators for JSF, JPA and JAX-RS Facets
- war overlays of workspace dependencies and .war archives, with incremental deployment on server
- dynamic resource filtering with incremental deployment on server
- Eclipse to Maven project conversion : maps Eclipse settings to their equivalent maven plugin configuration. Available for all Java EE projects.
看看这个家伙，哈哈。
装好了以后，Maven-Update Project，红X没了。
问题果然解决。
安装：
Eclipse-Help-Install New Software...
Name:
m2e-wtp(随意)
Location:
https://download.eclipse.org/m2e-wtp/releases/1.4/
