es java api 设置index mapping 报错 mapping source must be pairs

java.lang.IllegalArgumentException: mapping source must be pairs of fieldnames and properties definition.

 

从es官网找到的

request.mapping("_doc",  "{n"   " "_doc": {n"   " "properties": {n"   " "message": {n"   " "type": "text"n"   " }n"   " }n"   " }n"   "}",  XContentType.JSON);
不生效并报错
查看源码，发现mapping的第二个参数，要求必须为 %2==0，改为

request.mapping("_doc", "datetime", "type=date");
多个参数

request.mapping("_doc", "datetime", "type=date", "string", "type=text");