Python Elasticsearch：嘗試將分析器應用於索引文檔時出錯

Question

所以我試圖將分析器應用於我的索引，但無論我做什么，我都會遇到某種錯誤。 我整天都在找東西，但無法正常工作。 如果我按照下面的方式運行它，我會收到一個錯誤，上面寫着

elasticsearch.exceptions.RequestError: RequestError(400, 'illegal_argument_exception', 'analyzer [{settings={analysis={analyzer={filter=[lowercase], type=custom, tokenizer=keyword}}}}] has not been configured in mappings')

如果我在代碼的 body= 部分下方和“屬性”部分上方添加一個“映射”，我會收到此錯誤

elasticsearch.exceptions.RequestError: RequestError(400, 'mapper_parsing_exception', 'Root mapping definition has unsupported parameters: [mappings: {properties={Name={analyzer={settings={analysis={analyzer={filter=[lowercase], type=custom, tokenizer=keyword}}}} （它將 go 通過代碼正文部分的每個名稱）

def text_normalization():
    normalization_analyzer = {
        "settings": {
            "analysis": {
                "analyzer": {
                    "type": "custom",
                    "tokenizer": "keyword",
                    "filter": ["lowercase"]
                }
            }
        }
    }

    elasticsearch.indices.put_mapping(
        index=index_name,
        body={
            "properties": {
                "Year of Birth": {
                    "type": "integer",
                },
                "Name": {
                    "type": "text",
                    "analyzer": normalization_analyzer
                },
                "Status": {
                    "type": "text",
                    "analyzer": normalization_analyzer
                },
                "Country": {
                    "type": "text",
                    "analyzer": normalization_analyzer
                },
                "Blood Type": {
                    "type": "text",
                    "analyzer": normalization_analyzer
                }
            }
        }
    )

    match_docments = elasticsearch.search(index=index_name, body={"query": {"match_all": {}}})
    print(match_docments)

任何幫助，將不勝感激。

Answer 1

您的分析器只是缺少一個名稱，您應該像這樣指定它：

normalization_analyzer = {
    "settings": {
        "analysis": {
            "analyzer": {
                "normalization_analyzer": {                <--- add this
                    "type": "custom",
                    "tokenizer": "keyword",
                    "filter": ["lowercase"]
                }
            }
        }
    }
}

您需要使用安裝此分析器

elasticsearch.indices.put_settings(...)

同樣在映射部分，您需要按名稱引用分析器，因此您只需將分析器名稱添加為字符串

    body={
        "properties": {
            "Year of Birth": {
                "type": "integer",
            },
            "Name": {
                "type": "text",
                "analyzer": "normalization_analyzer"
            },
            "Status": {
                "type": "text",
                "analyzer": "normalization_analyzer"
            },
            "Country": {
                "type": "text",
                "analyzer": "normalization_analyzer"
            },
            "Blood Type": {
                "type": "text",
                "analyzer": "normalization_analyzer"
            }
        }
    }