es suggest did you mean资料

term suggester 功能介绍

term suggester 根据提供的文档提供搜索关键词的建议，也就是关键词自动纠错。该链接介绍如何使用 term suggester 语法。term suggester 是支持中文的，必须非常小心参数 min_word_length，默认值为 4，是指推荐词的长度大于 4 才会被显示，设置小一些能够开到效果（本人就被这个参数坑了，误以为 term suggester 不支持中文，绕了一大圈）。

本人使用的查询语法

{
	"from": 0,
	"size": 0,
	"suggest": {
		"didyoumean": {
			"text": "长安城北京城",
			"term": {
				"field": "search_text_new",
				"analyzer": "ik_smart",
				"size": 5,
				"suggest_mode": "always",
				"min_word_length": 2
			}
		}
	}
}

结果：
{
   "took": 32,
   "timed_out": false,
   "_shards": {
      "total": 5,
      "successful": 5,
      "failed": 0
   },
   "hits": {
      "total": 2267687,
      "max_score": 0,
      "hits": []
   },
   "suggest": {
      "didyoumean": [
         {
            "text": "长安城",
            "offset": 0,
            "length": 3,
            "options": [
               {
                  "text": "长安街",
                  "score": 0.6666666,
                  "freq": 2
               },
               {
                  "text": "长安",
                  "score": 0.5,
                  "freq": 256
               }
            ]
         },
         {
            "text": "北京城",
            "offset": 3,
            "length": 3,
            "options": [
               {
                  "text": "北京人",
                  "score": 0.6666666,
                  "freq": 89
               },
               {
                  "text": "北京大",
                  "score": 0.6666666,
                  "freq": 68
               }
            ]
         }
      ]
   }
}