Elasticsearch（四）搜索

喜欢ヅ旅行 2022-12-22 09:40 157阅读 0赞

### 文章目录 ###

*  导入测试数据
 *   *  下载测试数据
     *  创建索引和映射
     *  导入数据
     *  查看数据
 *  搜索文档
 *   *  搜索所有数据
     *  关键词搜索
     *  搜索结果过滤器
     *  搜索结果高亮显示

# 导入测试数据 #

为了测试搜索功能，我们首先导入测试数据，3160条商品数据，数据样例如下：

{  "index": { "_index": "pditems", "_id": "536563"}}
    {  "id":"536563","brand":"联想","title":"联想(Lenovo)小新Air13 Pro 13.3英寸14.8mm超轻薄笔记本电脑","sell_point":"清仓！仅北京，武汉仓有货！","price":"6688.0","barcode":"","image":"/images/server/images/portal/air13/little4.jpg","cid":"163","status":"1","created":"2015-03-08 21:33:18","updated":"2015-04-11 20:38:38"}

## 下载测试数据 ##

[https://download.csdn.net/download/weixin\_38305440/13129113][https_download.csdn.net_download_weixin_38305440_13129113]

将压缩文件中的 `pditems.json` 上传到服务器

## 创建索引和映射 ##

PUT /pditems
    { 
      "settings": { 
        "number_of_shards": 3, 
        "number_of_replicas": 2
      },
      "mappings": { 
        "properties": { 
          "id": { 
            "type": "long"
          },
          "brand": { 
            "type": "text",
            "analyzer": "ik_smart"
          },
          "title": { 
            "type": "text",
            "analyzer": "ik_max_word"
          },
          "sell_point": { 
            "type": "text",
            "analyzer": "ik_max_word",
            "search_analyzer": "ik_smart"
          },
          "price": { 
            "type": "float"
          },
          "image": { 
            "type": "keyword"
          },
          "cid": { 
            "type": "long"
          },
          "status": { 
            "type": "byte"
          },
          "created": { 
            "type": "date",
            "format": "yyyy-MM-dd HH:mm:ss"
          },
          "updated": { 
            "type": "date",
            "format": "yyyy-MM-dd HH:mm:ss"
          }
        } 
      }
    }

用 head 查看索引：  
![a][]

## 导入数据 ##

在服务器上，进入 `pditems.json` 所在的文件夹，执行批量数据导入：

curl -XPOST 'localhost:9200/pditems/_bulk' \
        -H 'Content-Type:application/json' \
        --data-binary @pditems.json

## 查看数据 ##

搜索 `pditems` 索引中全部 3160 条数据：

GET /pditems/_search
    { 
      "query": { 
        "match_all": { }
      },
      "size": 3160
    }

# 搜索文档 #

## 搜索所有数据 ##

# 搜索 pditems 索引中全部数据
    POST /pditems/_search
    { 
      "query": { 
        "match_all": { }
      }
    }

## 关键词搜索 ##

# 查询 pditems 索引中title中包含"电脑"的商品
    POST /pditems/_search
    { 
      "query": { 
        "match": { 
          "title": "电脑"
        }
      }
    }

## 搜索结果过滤器 ##

# 价格大于2000，并且title中包含"电脑"的商品
    POST /pditems/_search
    { 
      "query": { 
        "bool": { 
          "must": [
            { 
              "match": { 
                "title": "电脑"
              }
            }
          ],
    
          "filter": [
            { 
              "range": { 
                "price": { 
                  "gte": "2000"
                }
              }
            }
          ]
        }
      }
    }

## 搜索结果高亮显示 ##

POST /pditems/_search
    { 
    	"query": { 
    		"multi_match":{ 
    			"query": "手机",
    			"fields": ["title", "sell_point"]
    		}
    	},
    	"highlight" : { 
            "pre_tags" : ["<i class=\"highlight\">"],
            "post_tags" : ["</i>"],
            "fields" : { 
                "title" : { },
                "sell_point" : { 
                  "pre_tags": "<em>",
                  "post_tags": "</em>"
                }
            }
        }
    }

[https_download.csdn.net_download_weixin_38305440_13129113]: https://download.csdn.net/download/weixin_38305440/13129113
[a]: /images/20221120/769362a5cf4d4b9a86b051f1171675a1.png