DSL-全量查询

# 请求

查询所有文档

在 Postman 中，向 ES 服务器发 GET 请求

GET http://localhost:9200/student/_search

body

query 代表一个查询对象，里面可以有不同的查询属性
match_all 查询类型，如：match_all(代表查询所有)， match，term ， range 等等
- {查询条件}：查询条件会根据类型的不同，写法也有差异

{
    "query":{
        "match_all":{}
    }
}

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response

{
    "took": 3,
    "timed_out": false,
    "_shards": {
        "total": 1,
        "successful": 1,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": {
            "value": 5,
            "relation": "eq"
        },
        "max_score": 1.0,
        "hits": [
            {
                "_index": "student",
                "_type": "_doc",
                "_id": "1001",
                "_score": 1.0,
                "_source": {
                    "name": "zhangsan",
                    "nickname": "zhangsan",
                    "sex": "男",
                    "age": 30
                }
            },
            {
                "_index": "student",
                "_type": "_doc",
                "_id": "1002",
                "_score": 1.0,
                "_source": {
                    "name": "lisi",
                    "nickname": "lisi",
                    "sex": "男",
                    "age": 20
                }
            },
            {
                "_index": "student",
                "_type": "_doc",
                "_id": "1003",
                "_score": 1.0,
                "_source": {
                    "name": "wangwu",
                    "nickname": "wangwu",
                    "sex": "女",
                    "age": 40
                }
            },
            {
                "_index": "student",
                "_type": "_doc",
                "_id": "1004",
                "_score": 1.0,
                "_source": {
                    "name": "zhangsan1",
                    "nickname": "zhangsan1",
                    "sex": "女",
                    "age": 50
                }
            },
            {
                "_index": "student",
                "_type": "_doc",
                "_id": "1005",
                "_score": 1.0,
                "_source": {
                    "name": "zhangsan2",
                    "nickname": "zhangsan2",
                    "sex": "女",
                    "age": 30
                }
            }
        ]
    }
}

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# 结果分析

{
    "took" : 1116, 			// 查询花费时间，单位毫秒
    "timed_out" : false, 	// 是否超时
    "_shards" : { 			// 分片信息
        "total" : 1,		// 总数
        "successful" : 1, 	// 成功
        "skipped" : 0,		// 忽略
        "failed" : 0  		// 失败
    },
    "hits" : { 				// 搜索命中结果
        "total": { 			// 搜索条件匹配的文档总数
        "value": 3, 		// 总命中计数的值
        "relation": "eq" 	// 计数规则 eq 表示计数准确， gte 表示计数不准确 
    },
    "max_score" : 1.0, 		// 匹配度分值
    "hits" : [ 				// 命中结果集合
        ...
        }
    ]
}

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Last Updated: 2022/02/05, 15:58:51