4.ElasticSearch的基本api操作

1. ElasticSearch的Index

1. 索引初始化

在创建索引之前 对索引进行初始化操作
指定shards数量和replicas数量

curl -XPUT 'http://192.168.10.1:9200/library' -d {
    "settings":{
        "index":{
            "number_of_shards":5,
            "number_of_replicas":1,   
        }
    }
}

2. 查看索引信息

1. GET 地址/索引名称/_settings 即可查看索引信息

   执行   
   curl -X GET http://192.168.10.1:9200/test/_settings 
   返回
   {
       "test": {
           "settings": {
               "index": {
                   "creation_date": "1507896234377",
                   "number_of_shards": "5",
                   "number_of_replicas": "1",
                   "uuid": "fhI9dJWsQoCswafewXNqrA",
                   "version": {
                       "created": "5010299"
                   },
                   "provided_name": "test"
               }
           }
       }
   }
   

3. 查看多个索引信息

1. GET 地址/索引名称，索引名称/_settings 即可查看2个索引信息

   执行
   curl -X GET http://192.168.10.1:9200/test,test2/_settings
   返回
   {
       "test": {
           "settings": {
               "index": {
                   "creation_date": "1507896234377",
                   "number_of_shards": "5",
                   "number_of_replicas": "1",
                   "uuid": "fhI9dJWsQoCswafewXNqrA",
                   "version": {
                       "created": "5010299"
                   },
                   "provided_name": "test"
               }
           }
       }
       "test2": {
           "settings": {
               "index": {
                   "creation_date": "1506320574153",
                   "number_of_shards": "5",
                   "number_of_replicas": "1",
                   "uuid": "Ol-fhI9dJWsQoNqrA1jE1w",
                   "version": {
                       "created": "5010299"
                   },
                   "provided_name": "test2"
               }
           }
       }
   }
   

4. 查看所有索引信息

1. GET 地址/all/_settings 查看所有索引信息

   执行
   curl -X GET http://192.168.10.1:9200/_all/_settings
   返回
   省略了 因为太多了
   

5. 查看所有索引列表

1. GET 地址/_cat/indices?v

   执行
   curl -X GET 'http://192.168.10.1:9200/_cat/indices?v='
   返回
   省略了 因为太多了    
   

2. ElasticSearch的CURD

1. 创建索引

1. 创建索引

   创建一个索引名称为test9的索引
   curl -X PUT http://192.168.10.1:9200/test9/ 
   返回
   {
   "acknowledged": true,
   "shards_acknowledged": true
   }
   

2. 创建索引及类型和文档

   PUT 地址/索引名称/type名称/文档id
   执行
   curl -X PUT http://192.168.10.1:9200/test10/people/1 -d 
   '{
   	"title": "test10"
   }' 
   返回
   {
   "_index": "test10",
   "_type": "people",
   "_id": "AV8fmZO1Jq0BrQx-qzvq",
   "_version": 1,
   "result": "created",
   "_shards": {
       "total": 2,
       "successful": 2,
       "failed": 0
   },
   "created": true
   }
   

3. 创建索引及类型,不设置文档ID（因为会自动设置文档ID）

   POST 地址/索引名称/type名称/ 
   执行
   curl -X POST http://192.168.10.1:9200/test11/people/ -d 
   '{
   	"title": "test11"
   }' 
   返回
   {
   "_index": "test11",
   "_type": "people",
   "_id": "AV8fmZO1Jq0BrQx-qzvq",
   "_version": 1,
   "result": "created",
   "_shards": {
       "total": 2,
       "successful": 2,
       "failed": 0
   },
   "created": true
   }
   

2. 查看索引相关信息

1. 根据id查看文档信息

   get 地址/索引名称/type名称/文档id
   执行
   curl -X GET http://192.168.10.1:9200/test10/people/1
   返回
   {
   "_index": "test10",
   "_type": "people",
   "_id": "1",
   "_version": 1,
   "found": true,
   "_source": {
       "title": "test10"
   }
   }
   

2. 通过source获取指定字段

   get /索引名称/type名称/文档id?_source=字段
   执行
   curl -X GET http://192.168.10.1:9200/test10/people/1?_source=title
   返回
   {
   "_index": "test10",
   "_type": "people",
   "_id": "1",
   "_version": 1,
   "found": true,
   "_source": {
       "title": "test10"
   }
   }    
   

3. 更新索引

1. 更新同一id下的信息

   PUT 地址/索引名称/type名称/文档id
   执行
   curl -X PUT http://192.168.10.1:9200/test10/people/1 -d 
   '{
   	"title": "test10"
   }' 
   返回
   {
   "_index": "test10",
   "_type": "people",
   "_id": "1",
   "_version": 2,
   "result": "updated",
   "_shards": {
       "total": 2,
       "successful": 2,
       "failed": 0
   },
   "created": false
   }    
   

2. 更新指定字段

   POST 地址/索引名称/type名称/文档id/_update
   执行
   curl -X POST  http://192.168.10.1:9200/test10/people/1 -d 
   '{
   	"doc":{
   		"title": "testt12"
   	}
   }'
   返回
   {
   "_index": "test10",
   "_type": "people",
   "_id": "1",
   "_version": 3,
   "found": true,
   "_source": {
       "doc": {
           "title": "testt12"
       }
   }
   }
   

4. 删除索引及文档

1. 删除索引

   delete 地址/索引名称
   执行
   curl -X DELETE  http://192.168.10.1:9200/test10
   返回
   {
   "acknowledged": true
   }
   

2. 删除文档

   delete 地址/索引名称/type名称/文档id
   执行
   curl -X DELETE  http://192.168.10.1:9200/test10/people/1
   {
   "found": true,
   "_index": "test10",
   "_type": "people",
   "_id": "1",
   "_version": 4,
   "result": "deleted",
   "_shards": {
       "total": 2,
       "successful": 2,
       "failed": 0
   }
   }