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es 获取 mapping 的方法

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elasticsearch(es)获取索引的 mapping 的方法是什么?es 提供了 _mapping 接口。

推荐方式

es 提供了查看指定 index 的字段映射的接口,具体如下:

GET {index}/_mapping

输出如下:

{
  "qa": {
    "mappings": {
      "qa": {
        "properties": {
          "question": {
            "type": "text",
            "store": true,
            "norms": false,
            "index_options": "docs",
            "similarity": "BM25",
            "copy_to": [
              "all_string"
            ],
            "analyzer": "ik_max_word",
            "search_analyzer": "ik_smart"
          },
          "answer": {
            "type": "text",
            "store": true,
            "norms": false,
            "index_options": "docs",
            "similarity": "BM25",
            "copy_to": [
              "all_string"
            ],
            "analyzer": "ik_max_word",
            "search_analyzer": "ik_smart"
          },
          "all_string": {
            "type": "text",
            "store": false,
            "similarity": "BM25",
            "analyzer": "ik_max_word",
            "search_analyzer": "ik_smart"
          },
          ...

如上示例中 index 名是 qa,type 名也是 qa。