Today encounter a problem when elasticsearch create indexes, the index was created in uppercase, ES front-end plug can be seen to create the index data stored in uppercase
The program starts, when searching, but do not display data, the index becomes lowercase, resulting in data package can not be passed.
In https://www.oschina.net/question/879033_245796 see some students have encountered this problem,
When everyone's solution is to create an index, unified lowercase create, record it.