ElasticSearch(三) ElasticSearch中文

先来一个简单的测试

# curl -XPOST  "http://192.168.9.155:9200/_analyze?analyzer=standard&pretty" -d 'PHP是世界上最好的语言'   //_analyze表示分析分词；analyzer=standard，表示分词方式standard; -d表示测试的一段文字

测试结果

{
  "tokens" : [
    {
      "token" : "php",
      "start_offset" : 0,
      "end_offset" : 3,
      "type" : "<ALPHANUM>",
      "position" : 0
    },
    {
      "token" : "是",
      "start_offset" : 3,
      "end_offset" : 4,
      "type" : "<IDEOGRAPHIC>",
      "position" : 1
    },
    {
      "token" : "世",
      "start_offset" : 4,
      "end_offset" : 5,
      "type" : "<IDEOGRAPHIC>",
      "position" : 2
    },
    {
      "token" : "界",
      "start_offset" : 5,
      "end_offset" : 6,
      "type" : "<IDEOGRAPHIC>",
      "position" : 3
    },
    {
      "token" : "上",
      "start_offset" : 6,
      "end_offset" : 7,
      "type" : "<IDEOGRAPHIC>",
      "position" : 4
    },
    {
      "token" : "最",
      "start_offset" : 7,
      "end_offset" : 8,
      "type" : "<IDEOGRAPHIC>",
      "position" : 5
    },
    {
      "token" : "好",
      "start_offset" : 8,
      "end_offset" : 9,
      "type" : "<IDEOGRAPHIC>",
      "position" : 6
    },
    {
      "token" : "的",
      "start_offset" : 9,
      "end_offset" : 10,
      "type" : "<IDEOGRAPHIC>",
      "position" : 7
    },
    {
      "token" : "语",
      "start_offset" : 10,
      "end_offset" : 11,
      "type" : "<IDEOGRAPHIC>",
      "position" : 8
    },
    {
      "token" : "言",
      "start_offset" : 11,
      "end_offset" : 12,
      "type" : "<IDEOGRAPHIC>",
      "position" : 9
    }
  ]
}

接下来使用我们的IK

ik 带有两个分词器
ik_max_word ：会将文本做最细粒度的拆分；尽可能多的拆分出词语，拼接各种可能的组合 。
ik_smart：会做最粗粒度的拆分；已被分出的词语将不会再次被其它词语占有 。

curl -XPOST  "http://192.168.9.155:9200/_analyze?analyzer=ik_smart&pretty" -d 'PHP是世界上最好的语言'  //ik_smart方式

{
  "tokens" : [
    {
      "token" : "php",
      "start_offset" : 0,
      "end_offset" : 3,
      "type" : "ENGLISH",
      "position" : 0
    },
    {
      "token" : "世界上",
      "start_offset" : 4,
      "end_offset" : 7,
      "type" : "CN_WORD",
      "position" : 1
    },
    {
      "token" : "最好",
      "start_offset" : 7,
      "end_offset" : 9,
      "type" : "CN_WORD",
      "position" : 2
    },
    {
      "token" : "语言",
      "start_offset" : 10,
      "end_offset" : 12,
      "type" : "CN_WORD",
      "position" : 3
    }
  ]
}

curl -XPOST  "http://192.168.9.155:9200/_analyze?analyzer=ik_max_word&pretty" -d 'PHP是世界上最好的语言'    //ik_max_word方式

{
  "tokens" : [
    {
      "token" : "php",
      "start_offset" : 0,
      "end_offset" : 3,
      "type" : "ENGLISH",
      "position" : 0
    },
    {
      "token" : "世界上",
      "start_offset" : 4,
      "end_offset" : 7,
      "type" : "CN_WORD",
      "position" : 1
    },
    {
      "token" : "世界",
      "start_offset" : 4,
      "end_offset" : 6,
      "type" : "CN_WORD",
      "position" : 2
    },
    {
      "token" : "上",
      "start_offset" : 6,
      "end_offset" : 7,
      "type" : "CN_CHAR",
      "position" : 3
    },
    {
      "token" : "最好",
      "start_offset" : 7,
      "end_offset" : 9,
      "type" : "CN_WORD",
      "position" : 4
    },
    {
      "token" : "语言",
      "start_offset" : 10,
      "end_offset" : 12,
      "type" : "CN_WORD",
      "position" : 5
    }
  ]
}

区别很明显~