elasticsearch-7.8.0 + ik中文分词，打造全文搜索

我的环境是centos7 64位的系统，需要jdk1.8以上版本

elasticsearch官网下载地址：

wget  https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.8.0-linux-x86_64.tar.gz &

下载ik分词插件：https://github.com/medcl/elasticsearch-analysis-ik/releases

wget https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v7.8.0/elasticsearch-analysis-ik-7.8.0.zip

下载完elasticsearch直接解压就行了，我是解压到/usr/local/elasticsearch-7.8.0文件夹

mkdir /usr/local/elasticsearch-7.8.0/plugins/ik  

把ik分词插件解压到usr/local/elasticsearch-7.8.0/plugins/ik 文件夹

 

新建用户组 groupadd esgroup

新增用户 useradd esroot -g esgroup -p esroot

设置权限 chown -R esroot:esgroup /usr/local/elasticsearch-7.8.0

切换权限 su esroot

用root是无法启动的哈！要用esroot用户启动：/usr/local/elasticsearch-7.8.0/bin/elasticsearch&

curl 127.0.0.1:9200 查看elasticsearch是否启动成功

[[e-mail] plugins]$ curl 127.0.0.1:9200
{
  "name" : "email.buruyouni.com",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "2kk4PsMnQHevnK8w1kkUAQ",
  "version" : {
    "number" : "7.8.0",
    "build_flavor" : "default",
    "build_type" : "tar",
    "build_hash" : "757314695644ea9a1dc2fecd26d1a43856725e65",
    "build_date" : "2020-06-14T19:35:50.234439Z",
    "build_snapshot" : false,
    "lucene_version" : "8.5.1",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}

查看ik的分词，我这里用的是：ik_max_word模式

curl -H "Content-Type: application/json" http://localhost:9200/_analyze  -X POST  --data '{ "text":"广东省佛山市","analyzer": "ik_max_word"}'

{
    "tokens": [
        {
            "token": "广东省",
            "start_offset": 0,
            "end_offset": 3,
            "type": "CN_WORD",
            "position": 0
        },
        {
            "token": "广东",
            "start_offset": 0,
            "end_offset": 2,
            "type": "CN_WORD",
            "position": 1
        },
        {
            "token": "省",
            "start_offset": 2,
            "end_offset": 3,
            "type": "CN_CHAR",
            "position": 2
        },
        {
            "token": "佛山市",
            "start_offset": 3,
            "end_offset": 6,
            "type": "CN_WORD",
            "position": 3
        },
        {
            "token": "佛山",
            "start_offset": 3,
            "end_offset": 5,
            "type": "CN_WORD",
            "position": 4
        },
        {
            "token": "市",
            "start_offset": 5,
            "end_offset": 6,
            "type": "CN_CHAR",
            "position": 5
        }
    ]
}

添加，put请求类型，添加id=3的文档（我这里用的是postman啦）

post请求类型，更新id=5的文档的id字段和total_price字段：

 

delete请求类型，删除id=3的文档：