eclipse设置提示This element neither has attached source nor attached Javadoc and hence no Javadoc

eclipse设置提示This element neither has attached source nor attached Javadoc and hence no Javadoc

提示：This element neither has attached source nor attached Javadoc and hence no Javadoc could be found.

解决：

首先去官网下载SRC包。

如果包不是zip或jar格式，要解压后得到文件夹，然后如下图设置，只要定位到顶级目录，eclipse会自动搜索。同类只用设置一个jar就行了，我这里是lucene-core-6.4.2.jar。