ElasticSearch 7.x 报错：Root mapping definition has unsupported parameters

原因：

ElasticSearch 7.x 默认不在支持指定索引类型

在postman中用以下数据执行put请求：

{"mappings": {
        "person" :{
            "properties": {
                "age": {
                    "type": "integer"
                },
                "hobby": {
                    "type": "text"
                },
                "mail": {
                    "type": "text"
                },
                "name": {
                    "type": "keyword"
                }
            }
        }
            
        }
}

报错：

{
    "error": {
        "root_cause": [
            {
                "type": "mapper_parsing_exception",
                "reason": "Root mapping definition has unsupported parameters:  [person : {properties={mail={type=text}, name={type=keyword}, age={type=integer}, hobby={type=text}}}]"
            }
        ],
        "type": "mapper_parsing_exception",
        "reason": "Failed to parse mapping [_doc]: Root mapping definition has unsupported parameters:  [person : {properties={mail={type=text}, name={type=keyword}, age={type=integer}, hobby={type=text}}}]",
        "caused_by": {
            "type": "mapper_parsing_exception",
            "reason": "Root mapping definition has unsupported parameters:  [person : {properties={mail={type=text}, name={type=keyword}, age={type=integer}, hobby={type=text}}}]"
        }
    },
    "status": 400
}

但是对于ElasticSearch 6.x执行时没有问题的，elasticsearch7默认不在支持指定索引类型，默认索引类型是_doc，如果想改变，则配置include_type_name: true 即可(这个没有测试，官方文档说的，无论是否可行，建议不要这么做，因为elasticsearch8后就不在提供该字段)。官方文档：https://www.elastic.co/guide/en/elasticsearch/reference/current/removal-of-types.html

所以在ElasticSearch 7.x中不指定索引类型，创建索引是成功的，请看结果：