ElasticSearch基于RestFul的常用操作

痛定思痛。 2022-03-25 02:52 237阅读 0赞

## 1、创建index ##

PUT http://127.0.0.1:9200/my_es2
    {
    	"mappings":{
    		"logs":{
    			"properties":{
    				"name":{
    					"type":"text"
    				},
    				"age":{
    					"type":"integer"
    				},
    				"about":{
    					"type":"text"
    				},
    				"interests":{
    					"type":"text"
    				},
    				"birthDay":{
    					"type":"date",
    					"format":"yyyy-MM-dd HH:mm:ss"
    				}
    			}
    		}
    	}
    }

创建index（数据库）：my\_es2，type（表）：logs，field（字段）：name（姓名，文本类型）、age（年龄，数字类型）、about（简介，文本类型）、interests（兴趣，文本类型）、birthDay（生日，时间类型，格式是yyyy-MM-dd HH:mm:ss）。

## 2、插入数据 ##

插入3条数据到logs中

POST http://127.0.0.1:9200/my_es2/logs/1
    {
    	"name": "yjc",
    	"age": 27,
    	"about": "是的，I love lsx",
    	"interests": "啦啦啦",
    	"birthDay": "2017-01-01 18:36:23"
    }
    
    POST http://127.0.0.1:9200/my_es2/logs/2
    {
    	"name": "lsx",
    	"age": 26,
    	"about": "没错，I love yjc",
    	"interests": "哈哈哈",
    	"birthDay": "2018-02-02 19:37:24"
    }
    
    POST http://127.0.0.1:9200/my_es2/logs/3
    {
    	"name": "yjclsx",
    	"age": 0,
    	"about": "萌萌哒，I love yjc and lsx",
    	"interests": "嘻嘻嘻",
    	"birthDay": "2018-03-03 20:38:25"
    }

## 3、查询 ##

查询生日在2017-01-01到2019-01-01之间、姓名/简介/兴趣中带有关键字"yjc"的人员信息，并按照生日倒叙排序

注意（multi\_match查询是种分词查询，带有关键字"yjc"是指分词后带有"yjc"，所以"I love yjc !"可以匹配到，而"Iloveyjc!"是匹配不到的）

POST http://127.0.0.1:9200/my_es2/logs/_search
    {
        "query": {
        	"bool":{
        		"must":{
        			"multi_match": {
                		"query": "yjc",
                		"fields": [
                			"name",
                    		"about",
                    		"interests"
                		],
                		"type": "phrase"
            		}
        		},
        		"filter":{
        			"range" : {
    		            "birthDay": {
    		                "gte": "2017-01-01 00:00:00",
    		                "lte": "2019-01-01 00:00:00"
    		            }
    		        }
        		}
        	}
        },
        "sort": [
            { "birthDay": {"order":"desc"}}
        ]
    }

返回结果如下

{
        "took": 5,
        "timed_out": false,
        "_shards": {
            "total": 5,
            "successful": 5,
            "skipped": 0,
            "failed": 0
        },
        "hits": {
            "total": 3,
            "max_score": null,
            "hits": [
                {
                    "_index": "my_es2",
                    "_type": "logs",
                    "_id": "3",
                    "_score": null,
                    "_source": {
                        "name": "yjclsx",
                        "age": 0,
                        "about": "萌萌哒，I love yjc and lsx",
                        "interests": "嘻嘻嘻",
                        "birthDay": "2018-03-03 20:38:25"
                    },
                    "sort": [
                        1520109505000
                    ]
                },
                {
                    "_index": "my_es2",
                    "_type": "logs",
                    "_id": "2",
                    "_score": null,
                    "_source": {
                        "name": "lsx",
                        "age": 26,
                        "about": "没错，I love yjc",
                        "interests": "哈哈哈",
                        "birthDay": "2018-02-02 19:37:24"
                    },
                    "sort": [
                        1517600244000
                    ]
                },
                {
                    "_index": "my_es2",
                    "_type": "logs",
                    "_id": "1",
                    "_score": null,
                    "_source": {
                        "name": "yjc",
                        "age": 27,
                        "about": "是的，I love lsx",
                        "interests": "啦啦啦",
                        "birthDay": "2017-01-01 18:36:23"
                    },
                    "sort": [
                        1483295783000
                    ]
                }
            ]
        }
    }

## 4、增加字段 ##

在logs中增加一个文本类型的字段address，用于表示住址

PUT http://127.0.0.1:9200/my_es2/_mapping/logs
    {
    	"properties":{
    		"address":{
    			"type":"text"
    		}
    	}
    }

为address字段赋初值

POST http://127.0.0.1:9200/my_es2/_update_by_query
    {
      "script": {
        "lang": "painless",
        "inline": "if (ctx._source.address == null) {ctx._source.address = ''}"
      }
    }

再次执行步骤3中的查询语句，返回结果如下

{
        "took": 3,
        "timed_out": false,
        "_shards": {
            "total": 5,
            "successful": 5,
            "skipped": 0,
            "failed": 0
        },
        "hits": {
            "total": 3,
            "max_score": null,
            "hits": [
                {
                    "_index": "my_es2",
                    "_type": "logs",
                    "_id": "3",
                    "_score": null,
                    "_source": {
                        "birthDay": "2018-03-03 20:38:25",
                        "address": "",
                        "name": "yjclsx",
                        "about": "萌萌哒，I love yjc and lsx",
                        "interests": "嘻嘻嘻",
                        "age": 0
                    },
                    "sort": [
                        1520109505000
                    ]
                },
                {
                    "_index": "my_es2",
                    "_type": "logs",
                    "_id": "2",
                    "_score": null,
                    "_source": {
                        "birthDay": "2018-02-02 19:37:24",
                        "address": "",
                        "name": "lsx",
                        "about": "没错，I love yjc",
                        "interests": "哈哈哈",
                        "age": 26
                    },
                    "sort": [
                        1517600244000
                    ]
                },
                {
                    "_index": "my_es2",
                    "_type": "logs",
                    "_id": "1",
                    "_score": null,
                    "_source": {
                        "birthDay": "2017-01-01 18:36:23",
                        "address": "",
                        "name": "yjc",
                        "about": "是的，I love lsx",
                        "interests": "啦啦啦",
                        "age": 27
                    },
                    "sort": [
                        1483295783000
                    ]
                }
            ]
        }
    }

可见，里面已经增加了address字段。

## 5、更新数据  ##

修改id为3的人员信息

POST http://127.0.0.1:9200/my_es2/logs/3/_update
    {
        "doc": {
        	"address":"住址1",
        	"age":1
        }
    }

再查询一下id为3的人员信息

GET http://127.0.0.1:9200/my_es2/logs/_search?q=_id:3

返回结果如下

{
        "took": 21,
        "timed_out": false,
        "_shards": {
            "total": 5,
            "successful": 5,
            "skipped": 0,
            "failed": 0
        },
        "hits": {
            "total": 1,
            "max_score": 1,
            "hits": [
                {
                    "_index": "my_es2",
                    "_type": "logs",
                    "_id": "3",
                    "_score": 1,
                    "_source": {
                        "birthDay": "2018-03-03 20:38:25",
                        "address": "住址1",
                        "name": "yjclsx",
                        "about": "萌萌哒，I love yjc and lsx",
                        "interests": "嘻嘻嘻",
                        "age": 1
                    }
                }
            ]
        }
    }

可见，已经修改成功了。

# 附：[Elasticsearch 常用基本查询][Elasticsearch] #

[Elasticsearch]: https://www.cnblogs.com/sunfie/p/6653778.html