ES - 自动补全

效果：

要实现根据字母做补全，就必须对文档按照拼音分词，在github 上已经有elasticsearch 的拼音分词插件：

1. 拼音分词器下载地址：(https://github.com/medcl/elasticsearch-analysis-pinyin)[https://github.com/medcl/elasticsearch-analysis-pinyin]

2. 下载解压好后上传到es 插件目录：/var/lib/docker/volumes/es-plugins/_data

3. 重启es

4. 测试拼音分词器

POST /_analyze
{
  "analyzer": "pinyin",
  "text": "如家酒店真不错"
}

结果：

{
  "tokens" : [
    {
      "token" : "ru",
      "start_offset" : 0,
      "end_offset" : 0,
      "type" : "word",
      "position" : 0
    },
    {
      "token" : "rjjdzbc",
      "start_offset" : 0,
      "end_offset" : 0,
      "type" : "word",
      "position" : 0
    },
    {
      "token" : "jia",
      "start_offset" : 0,
      "end_offset" : 0,
      "type" : "word",
      "position" : 1
    },
    {
      "token" : "jiu",
      "start_offset" : 0,
      "end_offset" : 0,
      "type" : "word",
      "position" : 2
    },
    {
      "token" : "dian",
      "start_offset" : 0,
      "end_offset" : 0,
      "type" : "word",
      "position" : 3
    },
    {
      "token" : "zhen",
      "start_offset" : 0,
      "end_offset" : 0,
      "type" : "word",
      "position" : 4
    },
    {
      "token" : "bu",
      "start_offset" : 0,
      "end_offset" : 0,
      "type" : "word",
      "position" : 5
    },
    {
      "token" : "cuo",
      "start_offset" : 0,
      "end_offset" : 0,
      "type" : "word",
      "position" : 6
    }
  ]
}