elasticsearch设置字段不索引，或源数据只索引不存储

1.字段不建索引：index：false

PUT /test
{
  "mappings": {
    "test": {
      "properties": {
        "name1": {
          "type": "keyword",
          "index": false
        }
      }
    }
  }
}

2.数据只索引不存储

    2.1方案一(不推荐)

setting中的通用属性Store

该属性的取值可以为yes和no，用于指定字段的原始属性是否存入索引。默认值是no.意味着不能在结果中返回字段的原始值（即使没有存储原始值，也可以使用Soure字段返回原始值）。如果已经建立索引可以搜索该字段的内容。

ElasticSearch默认是存储整个文件的，如果要改变这种情形的话可以设置：“_source”:{"enable":"false"}

    2.2方案二（推荐）

排除不存储字段："excludes": [ "name4"]

PUT /test
{
  "settings": {}
}
PUT /test/_mapping/test
{
  "_source": {
    "excludes": [ "name4"]
  }, 
  "properties": {
        "name1": {
          "type": "keyword"
          , "index": true
        },
        "name2": {
          "type": "keyword"
          , "index": false
        },
        "name3": {
          "type": "text"
        },
        "name4": {
          "type": "text"
        }
      }
}

PUT /test/test/01
{
  "name1":"Republican congresswoman under fire for hanging a transphobic sign outs",
  "name2":"Republican congresswoman under fire for hanging a transphobic sign outs",
  "name3":"Republican congresswoman under fire for hanging a transphobic sign outs",
  "name4":"Republican congresswoman under fire for hanging a transphobic sign outs"
}

GET /test/_search
{
  "query": {
    "bool": {"must": [
      {
        "match": {
          "name1": "Republican congresswoman under fire for hanging a transphobic sign outs"
        }}
    ]}
  }
}