//创建mapping
PUT /my_index
{
  "mappings" : {
    "_doc" : {                                   // --------- _doc 为 改索引的 type
      "properties" : {
        "字段1" : {
          "type" : "keyword"
        },
        "字段2" : {
          "type" : "double"
        },
        "字段3" : {
          "type" : "integer"
        }      ,
        "字段4" : {
          "type" : "date",
          "format" : "yyyy-MM-dd HH:mm:ss||epoch_millis||yyyy-MM-dd"
        },
        "字段5" : {
          "type" : "text",
          "fields" : {
            "keyword" : {
              "type" : "keyword",
              "ignore_above" : 256
            }
        },
        "analyzer" : "whitespace",
          "fielddata" : true
        }
      }
    }
  }
}

//创建完mapping后,新增字段
PUT my_index/_mappings/_doc
{
  "properties": {
       "新增字段1": {
           "type": "keyword"
       }
   }
}

//更新某个字段的值
POST my_index/_doc/_id/_update
{
    "doc" : {
        "字段1" : "值1"
    }
}

//创建完mapping后,删除某字段,可以用于创建mapping是字段类型错了,先删后增(没有数据的情况下)
//这个应该不对,只能删除某一个文档中的那个字段值
POST my_index/_doc/id/_update
{
    "script" : "ctx._source.remove('要删除的字段1')"
}

//接上个,如果有数据,可以建一个新的索引,然后将原表数据 写入 新表
POST _reindex                  
{
  "source": {
    "index": "my_index"
  },
  "dest": {
    "index": "my_index_new"
  }
}

//查看mapping
GET my_index/_mapping/

//删除索引
DELETE my_index

//插入数据
POST my_index/my_type/1            -------// 1  为数据 id
{
  "字段1" : "111",
  "字段2" : "222"
}

//查询(简单)
GET  my_index/_doc/_search
{
  "query": {
    "term":{
      "字段1":"值1"
    }
  }
}

//删除某条数据
POST  my_index/_doc/_delete_by_query
{
  "query": {
    "term":{
      "字段1":"值1"
    }
  }
}

//删除所有数据
POST my_index/_delete_by_query?pretty
{
    "query": {
        "match_all": {
        }
    }
}