ElasticSearch-二-安装IK分词器-优快云博客

本文介绍如何在Elasticsearch中配置和使用IK分词器，包括下载、安装步骤及验证方法，展示了两种不同的分词模式：ik_smart和ik_max_word，以及它们在中文文本分析上的区别。

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IK Analysis for Elasticsearch

下载地址
https://github.com/medcl/elasticsearch-analysis-ik

Analyzer: ik_smart , ik_max_word , Tokenizer: ik_smart , ik_max_word

Versions

版本选择

安装

根据安装的elasticsearch版本选择IK分词器

https://github.com/medcl/elasticsearch-analysis-ik/releases/tag/v6.4.3

下载完成解压到elasticsearch-6.4.3\plugins目录

E:\elasticsearch-6.4.3\plugins

重新启动elasticsearch

成功加载IK分词器,验证

使用postman
http://localhost:9200/es_user/_analyze

{
    "tokens": [
        {
            "token": "中国",
            "start_offset": 0,
            "end_offset": 2,
            "type": "CN_WORD",
            "position": 0
        },
        {
            "token": "驻",
            "start_offset": 2,
            "end_offset": 3,
            "type": "CN_CHAR",
            "position": 1
        },
        {
            "token": "洛杉矶",
            "start_offset": 3,
            "end_offset": 6,
            "type": "CN_WORD",
            "position": 2
        },
        {
            "token": "领事馆",
            "start_offset": 6,
            "end_offset": 9,
            "type": "CN_WORD",
            "position": 3
        },
        {
            "token": "遭",
            "start_offset": 9,
            "end_offset": 10,
            "type": "CN_CHAR",
            "position": 4
        },
        {
            "token": "亚裔",
            "start_offset": 10,
            "end_offset": 12,
            "type": "CN_WORD",
            "position": 5
        },
        {
            "token": "男子",
            "start_offset": 12,
            "end_offset": 14,
            "type": "CN_WORD",
            "position": 6
        },
        {
            "token": "枪击",
            "start_offset": 14,
            "end_offset": 16,
            "type": "CN_WORD",
            "position": 7
        },
        {
            "token": "嫌犯",
            "start_offset": 17,
            "end_offset": 19,
            "type": "CN_WORD",
            "position": 8
        },
        {
            "token": "已",
            "start_offset": 19,
            "end_offset": 20,
            "type": "CN_CHAR",
            "position": 9
        },
        {
            "token": "自首",
            "start_offset": 20,
            "end_offset": 22,
            "type": "CN_WORD",
            "position": 10
        }
    ]
}

使用ik_max_word

{
    "tokens": [
        {
            "token": "中华人民共和国",
            "start_offset": 0,
            "end_offset": 7,
            "type": "CN_WORD",
            "position": 0
        },
        {
            "token": "中华人民",
            "start_offset": 0,
            "end_offset": 4,
            "type": "CN_WORD",
            "position": 1
        },
        {
            "token": "中华",
            "start_offset": 0,
            "end_offset": 2,
            "type": "CN_WORD",
            "position": 2
        },
        {
            "token": "华人",
            "start_offset": 1,
            "end_offset": 3,
            "type": "CN_WORD",
            "position": 3
        },
        {
            "token": "人民共和国",
            "start_offset": 2,
            "end_offset": 7,
            "type": "CN_WORD",
            "position": 4
        },
        {
            "token": "人民",
            "start_offset": 2,
            "end_offset": 4,
            "type": "CN_WORD",
            "position": 5
        },
        {
            "token": "共和国",
            "start_offset": 4,
            "end_offset": 7,
            "type": "CN_WORD",
            "position": 6
        },
        {
            "token": "共和",
            "start_offset": 4,
            "end_offset": 6,
            "type": "CN_WORD",
            "position": 7
        },
        {
            "token": "国",
            "start_offset": 6,
            "end_offset": 7,
            "type": "CN_CHAR",
            "position": 8
        }
    ]
}