ElasticSearch 7.x 中，插入数据报错

Question

问题描述

我使用的版本是 7.0.0, 由于 7.x 取消了 Type, 因此我是这么创建索引的：

$ curl -X PUT 'localhost:9200/accounts' -d '
{
  "settings":{
    "number_of_shards": 3,
    "number_of_replicas": 1
  },
  "mappings": { 
    "properties": {
      "user": {
        "type": "text",
        "analyzer": "ik_max_word",
        "search_analyzer": "ik_max_word"
      },
      "title": {
        "type": "text",
        "analyzer": "ik_max_word",
        "search_analyzer": "ik_max_word"
      },
      "desc": {
        "type": "text",
        "analyzer": "ik_max_word",
        "search_analyzer": "ik_max_word"
      }
    }
  }
}'

没有设定 Type(如果我设定 Type 则会报错)，返回信息是创建成功：

{
    "acknowledged": true,
    "shards_acknowledged": true,
    "index": "accounts"
}

接下来，我开始插入数据：

$ curl -X PUT 'localhost:9200/accounts/1' -d '
{
  "user": "张三",
  "title": "工程师",
  "desc": "数据库管理"
}' 

却提示我：

{
    "error": "Incorrect HTTP method for uri [/accounts/1] and method [PUT], allowed: [POST]",
    "status": 405
}

好吧，那我就换成 Post 方式咯：

$ curl -X POST 'localhost:9200/accounts/1' -d '
{
  "user": "张三",
  "title": "工程师",
  "desc": "数据库管理"
}' 

但是这样却提示：

{
    "error": {
        "root_cause": [
            {
                "type": "illegal_argument_exception",
                "reason": "Rejecting mapping update to [accounts] as the final mapping would have more than 1 type: [_doc, 1]"
            }
        ],
        "type": "illegal_argument_exception",
        "reason": "Rejecting mapping update to [accounts] as the final mapping would have more than 1 type: [_doc, 1]"
    },
    "status": 400
}

我不知道怎么就『多于一种类型』了。。。

之后我继续尝试，在 es 中，插入数据又分为指定文档id插入和自动产生文档id插入，上面的尝试中，我使用了 Put 请求和 Post 请求，做了 指定文档id插入 的尝试，都不成功，于是我又使用 Post 请求，看看能不能 自动产生文档id插入：

请求：

$ curl -X POST 'localhost:9200/accounts' -d '
{
  "user": "张三",
  "title": "工程师",
  "desc": "数据库管理"
}' 

响应：

{
    "error": "Incorrect HTTP method for uri [/accounts] and method [POST], allowed: [DELETE, PUT, GET, HEAD]",
    "status": 405
}

我。。。
求教，我现在应该怎么办

Answer 1

Elasticsearch 7.x

• Specifying types in requests is deprecated. For instance, indexing a document no longer requires a document type. The new index APIs are PUT {index}/_doc/{id} in case of explicit ids and POST {index}/_doc for auto-generated ids.
• The include_type_name parameter in the index creation, index template, and mapping APIs will default to false. Setting the parameter at all will result in a deprecation warning.
• The default mapping type is removed.

摘自 removal-of-types

指定ID的API是PUT {index}/_doc/{id}, 自动生成ID的API是POST {index}/_doc。你的请求路径里少了/_doc

Answer 2

还是要看官方文档。
README