es java api 设置index mapping 报错 mapping source must be pairs of fieldnames and properties definition.

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

从es官网找到的

request.mapping("_doc", 
        "{
" +
        "  "_doc": {
" +
        "    "properties": {
" +
        "      "message": {
" +
        "        "type": "text"
" +
        "      }
" +
        "    }
" +
        "  }
" +
        "}", 
        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");