Elastic Search 6.5.1 API 簡單使用

原創 gaojie_csdn 2018-12-12 21:01

簡介

Elastic Search 就像一個數據庫，只不過搜索功能比數據庫強大，API 操作起來就是發送 http 請求，類似於數據庫裏面的寫SQL語句（此處只是記錄ES的簡單理解和簡單操作）

比如一個 ElasticSearch 請求

http://47.105.159.23:9200/manage/employee/_search

索引--index-- manage ===== 類似於MySQL裏面的一個數據庫

類型--type-- employee ===== 類似於MySQL裏面的一張表

操作--oper-- _search ====== 類似於MySQL裏面的 select * from employee

插入 Insert

添加操作一般有兩種方式

  1. PUT請求，需要自己攜帶請求ID，將請求的數據保存在此ID下，若此ID原本存在，則將之前的數據覆蓋（不推薦，不友好，我也就不演示）
  2. POST請求，只需要傳遞請求的數據，ES自動生成ID，插入成功後將ID返回 
    Request
POST  http://47.105.159.23:9200/manage/employee/
Content-Type  application/json
{
	"name": "周益",
	"phone": "18874791111",
	"sex": 2,
	"salary": 15000,
	"post": "IOS工程師",
	"dept": {
		"id": "1001",
		"name": "技術中心"
	},
	"join_time": "2018-10-03",
	"desc": "a IOS boy"
}

Response
{
    "_index": "manage",
    "_type": "employee",
    "_id": "nVZ-l2cBof4Qu3GrFc1L",
    "_version": 1,
    "result": "created",
    "_shards": {
        "total": 2,
        "successful": 1,
        "failed": 0
    },
    "_seq_no": 1,
    "_primary_term": 1
}

    由於我是使用的 Postman 發送的請求，所以我的請求格式如下，JSON 格式比較直觀，便於理解

查詢 Search

查詢就有很多種了，這裏只記錄最基本最簡單的

  1. 沒有查詢條件（查詢所有） 
    GET  http://47.105.159.23:9200/manage/employee/_search

  2. 帶查詢條件

term ：一般用戶常量值的匹配，最常用爲數值匹配

GET  http://47.105.159.23:9200/manage/employee/_search
{
    "query": {
    	"term": {
    		"salary": 6000
    	}
    }
}
======Response========
{
    "took": 1,
    "timed_out": false,
    "_shards": {
        "total": 5,
        "successful": 5,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": 1,
        "max_score": 1,
        "hits": [
            {
                "_index": "manage",
                "_type": "employee",
                "_id": "oVYCmGcBof4Qu3Gr8c33",
                "_score": 1,
                "_source": {
                    "name": "青萍",
                    "phone": "18874795555",
                    "sex": 2,
                    "salary": 6000,
                    "post": "會計",
                    "dept": {
                        "id": "1002",
                        "name": "財務部門"
                    },
                    "join_time": "2018-08-03",
                    "desc": "a sunny girl"
                }
            }
        ]
    }
}

terms ：用於一個字段匹配多個值時使用

GET   http://47.105.159.23:9200/manage/employee/_search
{
    "query": {
    	"terms": {
    		"salary": [6000, 10000]
    	}
    }
}
========Response===========
{
    "took": 1,
    "timed_out": false,
    "_shards": {
        "total": 5,
        "successful": 5,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": 2,
        "max_score": 1,
        "hits": [
            {
                "_index": "manage",
                "_type": "employee",
                "_id": "nFZul2cBof4Qu3GrDc0v",
                "_score": 1,
                "_source": {
                    "name": "高節",
                    "phone": "18874796310",
                    "sex": 1,
                    "salary": 10000,
                    "post": "Java工程師",
                    "dept": {
                        "id": "1001",
                        "name": "技術中心"
                    },
                    "join_time": "2018-12-03",
                    "desc": "a love of work boy"
                }
            },
            {
                "_index": "manage",
                "_type": "employee",
                "_id": "oVYCmGcBof4Qu3Gr8c33",
                "_score": 1,
                "_source": {
                    "name": "青萍",
                    "phone": "18874795555",
                    "sex": 2,
                    "salary": 6000,
                    "post": "會計",
                    "dept": {
                        "id": "1002",
                        "name": "財務部門"
                    },
                    "join_time": "2018-08-03",
                    "desc": "a sunny girl"
                }
            }
        ]
    }
}

range ：範圍查找，一般可用於數值，日期

GET  http://47.105.159.23:9200/manage/employee/_search
{
    "query": {
    	"range": {
    		"join_time": {
    			"lt": "2018-12-02",
    			"gt": "2018-10-02"
    		}
    	}
    }
}
===========Response=================
{
    "took": 21,
    "timed_out": false,
    "_shards": {
        "total": 5,
        "successful": 5,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": 1,
        "max_score": 1,
        "hits": [
            {
                "_index": "manage",
                "_type": "employee",
                "_id": "nVZ-l2cBof4Qu3GrFc1L",
                "_score": 1,
                "_source": {
                    "name": "周益",
                    "phone": "18874791111",
                    "sex": 2,
                    "salary": 15000,
                    "post": "IOS工程師",
                    "dept": {
                        "id": "1001",
                        "name": "技術中心"
                    },
                    "join_time": "2018-10-03",
                    "desc": "a IOS boy"
                }
            }
        ]
    }
}

match ：普通查詢，一般用於文本搜索，以一個漢字或者一個單詞爲最小單位，比如內容爲hello word，輸入hello能夠匹配成功，但是輸入hell則匹配不上

GET  http://47.105.159.23:9200/manage/employee/_search
{
    "query": {
    	"match": {
    		"desc": "boy man"
    	}
    }
}
=============Response==============
{
    "took": 17,
    "timed_out": false,
    "_shards": {
        "total": 5,
        "successful": 5,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": 5,
        "max_score": 0.6931472,
        "hits": [
            {
                "_index": "manage",
                "_type": "employee",
                "_id": "oFYAmGcBof4Qu3Gr880L",
                "_score": 0.6931472,
                "_source": {
                    "name": "李嶽",
                    "phone": "18874794444",
                    "sex": 2,
                    "salary": 12000,
                    "post": "Android工程師",
                    "dept": {
                        "id": "1001",
                        "name": "技術中心"
                    },
                    "join_time": "2018-04-03",
                    "desc": "a rude man"
                }
            },
            {
                "_index": "manage",
                "_type": "employee",
                "_id": "nVZ-l2cBof4Qu3GrFc1L",
                "_score": 0.37881336,
                "_source": {
                    "name": "周益",
                    "phone": "18874791111",
                    "sex": 2,
                    "salary": 15000,
                    "post": "IOS工程師",
                    "dept": {
                        "id": "1001",
                        "name": "技術中心"
                    },
                    "join_time": "2018-10-03",
                    "desc": "a IOS boy"
                }
            },
            {
                "_index": "manage",
                "_type": "employee",
                "_id": "olYDmGcBof4Qu3Grw837",
                "_score": 0.37881336,
                "_source": {
                    "name": "銅川",
                    "phone": "18874796666",
                    "sex": 1,
                    "salary": 16000,
                    "post": "設計UI",
                    "dept": {
                        "id": "1003",
                        "name": "設計中心"
                    },
                    "join_time": "2018-04-03",
                    "desc": "a sunny boy"
                }
            },
            {
                "_index": "manage",
                "_type": "employee",
                "_id": "nFZul2cBof4Qu3GrDc0v",
                "_score": 0.3034693,
                "_source": {
                    "name": "高節",
                    "phone": "18874796310",
                    "sex": 1,
                    "salary": 10000,
                    "post": "Java工程師",
                    "dept": {
                        "id": "1001",
                        "name": "技術中心"
                    },
                    "join_time": "2018-12-03",
                    "desc": "a love of work boy"
                }
            },
            {
                "_index": "manage",
                "_type": "employee",
                "_id": "nlb-l2cBof4Qu3Gr8M1Y",
                "_score": 0.2876821,
                "_source": {
                    "name": "春哥",
                    "phone": "18874792222",
                    "sex": 1,
                    "salary": 35000,
                    "post": "架構師",
                    "dept": {
                        "id": "1001",
                        "name": "技術中心"
                    },
                    "join_time": "2018-03-03",
                    "desc": "a framework boy"
                }
            }
        ]
    }
}

multi_match ：多字段匹配，比如輸入一個關鍵字從姓名和描述中查找

以下會匹配出desc或者name存在beautiful或者高節的記錄

GET  http://47.105.159.23:9200/manage/employee/_search
{
    "query": {
    	"multi_match": {
    		"query": "beautiful 高節",
    		"fields": ["desc", "name"]
    	}
    }
}
==========================
{
    "took": 16,
    "timed_out": false,
    "_shards": {
        "total": 5,
        "successful": 5,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": 2,
        "max_score": 2.4079456,
        "hits": [
            {
                "_index": "manage",
                "_type": "employee",
                "_id": "nFZul2cBof4Qu3GrDc0v",
                "_score": 2.4079456,
                "_source": {
                    "name": "高節",
                    "phone": "18874796310",
                    "sex": 1,
                    "salary": 10000,
                    "post": "Java工程師",
                    "dept": {
                        "id": "1001",
                        "name": "技術中心"
                    },
                    "join_time": "2018-12-03",
                    "desc": "a love of work boy"
                }
            },
            {
                "_index": "manage",
                "_type": "employee",
                "_id": "n1YAmGcBof4Qu3GrB83o",
                "_score": 0.6931472,
                "_source": {
                    "name": "麗燕",
                    "phone": "18874793333",
                    "sex": 2,
                    "salary": 12000,
                    "post": "測試工程師",
                    "dept": {
                        "id": "1001",
                        "name": "技術中心"
                    },
                    "join_time": "2018-05-03",
                    "desc": "a beautiful girl"
                }
            }
        ]
    }
}

bool ：過濾查詢，其中可以包含多個查詢條件，可以通過must，must_not，should連接

must：所有條件必須全部符合（最常用，使用頻率最高）

must_not：一個都不要符合

should：至少有一個符合（若與must公用，must存在滿足時，should可以不匹配成功）

以下查詢性別爲1，且工資大於10000，且 desc 包含 framework 的記錄

GET  http://47.105.159.23:9200/manage/employee/_search
{
    "query": {
        "bool": {
            "must": [
                {
                    "term": {
                        "sex": 1
                    }
                },
                {
                    "range": {
                        "salary": {
                            "gt": 10000
                        }
                    }
                },
                {
                	"match": {
                		"desc": "framework"
                	}
                }
            ]
        }
    }
}
=================================
{
    "took": 3,
    "timed_out": false,
    "_shards": {
        "total": 5,
        "successful": 5,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": 1,
        "max_score": 2.287682,
        "hits": [
            {
                "_index": "manage",
                "_type": "employee",
                "_id": "nlb-l2cBof4Qu3Gr8M1Y",
                "_score": 2.287682,
                "_source": {
                    "name": "春哥",
                    "phone": "18874792222",
                    "sex": 1,
                    "salary": 35000,
                    "post": "架構師",
                    "dept": {
                        "id": "1001",
                        "name": "技術中心"
                    },
                    "join_time": "2018-03-03",
                    "desc": "a framework boy"
                }
            }
        ]
    }
}

分頁：from 起始（默認從0開始），size 讀取記錄數，sort 排序字段（可定義排序字段集合以及排序規則）

以下語句查詢 desc 字段包含 單詞 a 的記錄，從第1條開始查詢，返回5條記錄，首先按照工資降序排序，若工資相同，然後按照入職時間降序排序

GET  http://47.105.159.23:9200/manage/employee/_search
{
    "query": {
        "match": {
            "desc": "a"
        }
    },
    "from": 0,
    "size": 5,
    "sort": [
        {
            "salary": {
                "order": "desc"
            }
        },
        {
        	"join_time": {
        		"order": "desc"
        	}
        }
    ]
}
=====================================
{
    "took": 2,
    "timed_out": false,
    "_shards": {
        "total": 5,
        "successful": 5,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": 8,
        "max_score": null,
        "hits": [
            {
                "_index": "manage",
                "_type": "employee",
                "_id": "nlb-l2cBof4Qu3Gr8M1Y",
                "_score": null,
                "_source": {
                    "name": "春哥",
                    "phone": "18874792222",
                    "sex": 1,
                    "salary": 35000,
                    "post": "架構師",
                    "dept": {
                        "id": "1001",
                        "name": "技術中心"
                    },
                    "join_time": "2018-03-03",
                    "desc": "a framework boy"
                },
                "sort": [
                    35000,
                    1520035200000
                ]
            },
            {
                "_index": "manage",
                "_type": "employee",
                "_id": "o1ZWmGcBof4Qu3GrG81P",
                "_score": null,
                "_source": {
                    "name": "桂祿",
                    "phone": "18874797777",
                    "sex": 1,
                    "salary": 16000,
                    "post": "設計前端",
                    "dept": {
                        "id": "1003",
                        "name": "設計中心"
                    },
                    "join_time": "2018-05-03",
                    "desc": "a front boy"
                },
                "sort": [
                    16000,
                    1525305600000
                ]
            },
            {
                "_index": "manage",
                "_type": "employee",
                "_id": "olYDmGcBof4Qu3Grw837",
                "_score": null,
                "_source": {
                    "name": "銅川",
                    "phone": "18874796666",
                    "sex": 1,
                    "salary": 16000,
                    "post": "設計UI",
                    "dept": {
                        "id": "1003",
                        "name": "設計中心"
                    },
                    "join_time": "2018-04-03",
                    "desc": "a sunny boy"
                },
                "sort": [
                    16000,
                    1522713600000
                ]
            },
            {
                "_index": "manage",
                "_type": "employee",
                "_id": "nVZ-l2cBof4Qu3GrFc1L",
                "_score": null,
                "_source": {
                    "name": "周益",
                    "phone": "18874791111",
                    "sex": 2,
                    "salary": 15000,
                    "post": "IOS工程師",
                    "dept": {
                        "id": "1001",
                        "name": "技術中心"
                    },
                    "join_time": "2018-10-03",
                    "desc": "a IOS boy"
                },
                "sort": [
                    15000,
                    1538524800000
                ]
            },
            {
                "_index": "manage",
                "_type": "employee",
                "_id": "n1YAmGcBof4Qu3GrB83o",
                "_score": null,
                "_source": {
                    "name": "麗燕",
                    "phone": "18874793333",
                    "sex": 2,
                    "salary": 12000,
                    "post": "測試工程師",
                    "dept": {
                        "id": "1001",
                        "name": "技術中心"
                    },
                    "join_time": "2018-05-03",
                    "desc": "a beautiful girl"
                },
                "sort": [
                    12000,
                    1525305600000
                ]
            }
        ]
    }
}

修改 update

根據傳入ID，修改對於的數據，只修改傳入的字段，不傳入的字段不操作

POST  http://47.105.159.23:9200/manage/employee/o1ZWmGcBof4Qu3GrG81P/_update
{
	"doc": {
		"salary": 50000
	}
}
=================
{
    "_index": "manage",
    "_type": "employee",
    "_id": "o1ZWmGcBof4Qu3GrG81P",
    "_version": 3,
    "result": "updated",
    "_shards": {
        "total": 2,
        "successful": 1,
        "failed": 0
    },
    "_seq_no": 4,
    "_primary_term": 1
}

刪除 delete

DELETE 請求，傳入要刪除的ID即可

DELETE http://47.105.159.23:9200/manage/employee/pFZimGcBof4Qu3Gro80s
=====Response======
{
    "_index": "manage",
    "_type": "employee",
    "_id": "pFZimGcBof4Qu3Gro80s",
    "_version": 2,
    "result": "deleted",
    "_shards": {
        "total": 2,
        "successful": 1,
        "failed": 0
    },
    "_seq_no": 6,
    "_primary_term": 1
}

 

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張博的博客 2024-05-28 14:20:01

win11休眠功能

https://www.sysgeek.cn/windows-11-hibernate/

張博的博客 2024-05-28 14:20:01

記一次 .NET某工控WPF程序被人惡搞的 卡死分析

一：背景 1. 講故事 這一期程序故障除了做原理分析，還順帶吐槽一下，熟悉我的朋友都知道我分析dump是免費的，但免費不代表可以濫用我的寶貴時間，我不知道有些人故意惡搞卡死是想幹嘛，不得而知，希望後面類似的事情越來越少吧！廢話不多說，我們來

一線碼農 2024-05-28 14:15:51

《最新出爐》系列入門篇-Python+Playwright自動化測試-48-Route類攔截修改請求-上篇

1.簡介  在日常工作和學習中，自動化測試的時候：在加載頁面時，可能頁面出現很多不是很重要或者不是我們所關注的，這個時候我們就可以選擇不加載這些內容，以提高頁面加載速度，節省資源。例如：可能頁面上圖片比較多，而我們又不關心圖片內容。那麼，在

北京-宏哥 2024-05-28 14:14:40

使用阿里雲oss,同一個域名前端實現通過路徑區分來訪問多個不同的項目

  前端存放在阿里雲oss上， 域名cname解析到阿里雲cdn,cdn指向阿里雲oss存儲   oss中存放的相對目錄是這樣的： a項目代碼目錄/a項目靜態文文件 a項目代碼目錄/a項目首頁文件index.html a項目代碼目錄/b項

馬昌偉 2024-05-28 14:14:00

C++文件/流

C++文件讀寫（文本文件/二進制文件） 一、前言 常見的文件類型可分爲兩種：文本文件和二進制文件。 文本文件的閱讀相對容易，可以使用記事本/Notepad++/VS Code等應用程序直接打開閱覽；然而二進制文件由0/1序列組成，直接打卡二

Qtodd 2024-05-28 14:13:40