Elasticsearch个人心得笔记（三）

爱被打了一巴掌 2022-01-21 06:01 308阅读 0赞

#                       Elasticsearch个人心得笔记（三） #

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一.文档管理操作

1.新增文档数据

2.获取文档

1.直接获取文档,直到文档id

2.获取多个文档

3.删除文档

4.搜索

1.准备多一些数据

2.match\_all

3.term query

4.match query

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# 一.文档管理操作 #

## 1.新增文档数据 ##

**curl -XPUT -d '\{"id":"uuid1","title":"es简介","content":"es好用好用真好用"\}' [http://10.9.151.60:9200/index01/article/1][http_10.9.151.60_9200_index01_article_1]**

![20190608154934127.png][]

*  **index01:文档存储在哪个索引中**
 *  **article:index01中新建一个当前文档所属的type**

{
    		    "_index": "index01",
    		    "_type": "article",
    		    "_id": "2",
    		    "_version": 1,// es集群中,主从分片判断数据的更新状态使用version
    		    "result": "created",
    		    "_shards": {
    		        "total": 2,
    		        "successful": 1,
    		        "failed": 0
    		    },
    		    "created": true
    		}

**\_version  用来判断数据是不是最新的，如果主宕机，选举一个从顶替，如果\_version不是最新版本则会被pass掉，查询选举**

## **2.获取文档** ##

### 1.直接获取文档,直到文档id ###

**\#curl -XGET [http://10.9.151.60:9200/index01/article/1][http_10.9.151.60_9200_index01_article_1]**

![2019060815554371.png][]

**返回数据结构内容**

{
    		    "_index": "index01",
    		    "_type": "article",
    		    "_id": "1",
    		    "_version": 1,
    		    "found": true,
    		    "_source": { //搜索还是直接获取,source中永远存储的是文档数据新增时的内容
    		        "id": "uuid1",
    		        "title": "es简介",
    		        "content": "es好用好用真好用"
    		    }
    		}

**"\_source": \{ //搜索还是直接获取,source中永远存储的是文档数据新增时的内容  
                "id": "uuid1",  
                "title": "es简介",  
                "content": "es好用好用真好用"  
            \}**

### 2.获取多个文档 ###

**curl -XGET  -d '\{"docs":\[\{"\_index":"index01","\_type":"article","\_id":"1"\},\{"\_index":"index01","\_type":"article","\_id":"2"\}\]\}' http://10.42.60.249:9200/\_mget**

![20190608160002644.png][]

{
    	"docs": [{
    		"_index": "index01",
    		"_type": "article",
    		"_id": "1",
    		"_version": 1,
    		"found": true,
    		"_source": {
    			"id": "uuid1",
    			"title": "es简介",
    			"content": "es好用好用真好用"
    		}
    	}, {
    		"_index": "index01",
    		"_type": "article",
    		"_id": "2",
    		"_version": 1,
    		"found": true,
    		"_source": {
    			"id": "uuid1",
    			"title": "简介",
    			"content": "大大棒棒糖"
    		}
    	}]
    }[

## 3.删除文档 ##

**curl -XDELETE http://10.42.60.249:9200/index01/article/1**

## **4.搜索** ##

**新增文档时,文档的所有数据是什么类型(所有字符串底层lucene中都是TextField),分词器是什么(standard标准分词器)**

### **1.准备多一些数据** ###

*  **curl -XPUT -d '\{"id":1,"title":"es简介","content":"es好用好用真好用"\}' http://10.42.60.249:9200/index01/article/1**
 *  **curl -XPUT -d '\{"id":1,"title":"java编程思想","content":"这就是个工具书"\}' http://10.42.60.249:9200/index01/article/2**
 *  **curl -XPUT -d '\{"id":1,"title":"大数据简介","content":"你知道什么是大数据吗，就是大数据"\}' http://10.42.60.249:9200/index01/article/3**

![20190608160307237.png][]

![20190608160356860.png][]

**指令就不一一展示了**

### 2.match\_all ###

**curl -XGET http://10.42.60.249:9200/index01/\_search -d '\{"query": \{"match\_all": \{\}\}\}'**

![2019060816070150.png][]

### 3.term query ###

**标准分词器**

*  curl -XGET http://10.42.60.249:9200/index01/\_search -d '\{"query":\{"term":\{"title":"java"\}\}\}'
 *  curl -XGET http://10.42.60.249:9200/index01/\_search -d '\{"query":\{"term":\{"title":"java编程思想"\}\}\}'
 *  curl -XGET http://10.42.60.249:9200/jtdb\_item/\_search -d '\{"query":\{"term":\{"title":"双卡双"\}\}\}'

![20190608160846512.png][]

### 4.match query ###

**分域查询**

**curl -XGET http://10.42.60.249:9200/index01/\_search -d '\{"query":\{"match":\{"title":"java编程思想"\}\}\}'**

![20190608160938196.png][]

**将查询的字符串 "java编程思想" 按照默认,指定的分词器先进行分词计算 \{java\},\{编\},\{程\},\{思\},\{想\},只要域属性中有其中一个词项,查询结果就会返回**

[http_10.9.151.60_9200_index01_article_1]: http://10.9.151.60:9200/index01/article/1
[20190608154934127.png]: /images/20220121/80c0852e562b4ad18be5d614c90ede89.png
[2019060815554371.png]: /images/20220121/9def4ada0531407cbd91538d56b3f372.png
[20190608160002644.png]: /images/20220121/461e6155ee6d428494128cbfa76c5754.png
[20190608160307237.png]: /images/20220121/dfaa1fed67b64facb0bb69c07f81645c.png
[20190608160356860.png]: /images/20220121/ad0e8a447fe34b2a8feb5d1437de9146.png
[2019060816070150.png]: /images/20220121/431336b93aa4408395e213d86f9e97f3.png
[20190608160846512.png]: /images/20220121/68099162ac9342e793d76846b01a9f97.png
[20190608160938196.png]: /images/20220121/35f93a7628294850971cd14fa9c6c72f.png