【Elasticsearch問題1】建立索引的時候報mapper_parsing_exception

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報錯日誌：
網上寫elasticsearch也有很多文章，都寫的挺好的，目前想把錯誤記錄檔以及解決方案寫出來，希望一些小夥伴能儘快躲開些問題，把時間花在一些有用的事情上。

錯誤記錄檔{"error": {"root_cause": [{"type": "mapper_parsing_exception","reason": "analyzer on field [word] must be set when search_analyzer is set"}],"type": "mapper_parsing_exception","reason": "Failed to parse mapping [doc]: analyzer on field [word] must be set when search_analyzer is set","caused_by": {"type": "mapper_parsing_exception","reason": "analyzer on field [word] must be set when search_analyzer is set"}},"status": 400}

建立索引的條件：

{  "settings": {    "number_of_shards": 1,    "analysis": {      "filter": {        "ngram_filter": {          "type": "ngram",          "min_gram": 2,          "max_gram": 20        }      },      "analyzer": {        "ngram_analyzer": {          "type": "custom",          "tokenizer": "standard",          "filter": [            "lowercase",            "ngram_filter"          ]        }      }    }  },  "mappings": {    "doc": {      "_all": {        "type": "text",     **   "index_analyzer": "ngram_analyzer",**        "search_analyzer": "standard"      },      "properties": {        "word": {          "type": "text",         ** "index_analyzer": "ngram_analyzer",**          "search_analyzer": "standard"        },        "definition": {          "type": "text"        }      }    }  }}

為什麼呢？因為mappings裡有寫參數在elasticsearch5版本裡不支援了，index_analyzer就不支援了，改成了analyzer，改過來，就好了，可以建立索引成功。

【Elasticsearch問題1】建立索引的時候報mapper_parsing_exception