Description Resource Path Location Type The project was not built since it depends on XXXX,

1.Ecplise启动之后项目有小红X，
    启动项目包错Description    Resource    Path    Location    Type The project was not built since it depends on XXXX, 

2.原因 jdk加载的时候有问题。

3.解决重新加载jdk将jdk换成jre

window——java——jre,选择jdk编辑，将jdk换成jre