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                檢查文檔是否存在 如果確實想檢查一下文檔是否存在,你可以試用HEAD來替代GET方法,這樣就是會返回HTTP頭文件: curl -i -XHEAD /website/blog/123 如果文檔存在,Elasticsearch將會返回200 OK的狀態碼: HTTP/1.1 200 OK Content-Type: text/plain; charset=UTF-8 Content-Length: 0 如果不存在將會返回404 Not Found狀態碼: curl -i -XHEAD /website/blog/124 HTTP/1.1 404 Not Found Content-Type: text/plain; charset=UTF-8 Content-Length: 0 當然,這個反饋只代表了你查詢的那一刻文檔不存在,但是不代表幾毫秒后它不存在,很可能與此同時,另一個進程正在創建文檔。
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