【Elasticsearch实践】（六）ES搜索

雨点打透心脏的1/2处 2023-02-20 10:48 28阅读 0赞

# 一、复杂查询 #

## 1.1、复杂条件搜索 ##

# 复杂条件搜索
    GET tindex/_doc/_search
    { 
      "query":{ 
        "match":{ 
          "name": "wells"
        }
      }
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70]

## 1.2、指定输出字段 ##

# 指定输出字段
    GET /tindex/_doc/_search
    { 
      "query": { 
        "match":{ 
          "name": "wells"
        }
      },
      "_source": ["name", "age"]
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 1]

## 1.3、排序 ##

# 排序
    GET /tindex/_doc/_search
    { 
      "query": { 
        "match": { 
          "name": "wells"
        }
      },
      "_source": ["name", "age"],
      "sort": [
        { 
          "age": { 
            "order": "desc"
          }
        }
      ]
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 2]

## 1.4、分页查询 ##

# 分页查询
    GET /tindex/_doc/_search
    { 
      "query": { 
        "match": { 
          "name": "wells"
        }
      },
      "from": 0,
      "size": 1
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 3]

## 1.5、布尔值查询 ##

### 1.5.1、must (and) ###

GET /tindex/_doc/_search
    { 
      "query": { 
        "bool": { 
          "must": [
            { 
              "match": { 
                "name": "wells"
              }
            },
            { 
              "match": { 
                "age": 17
              }
            }
          ]
        }
      }
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 4]

### 1.5.2、should (or) ###

# bool: should 查询 where name=wells or age = 17
    GET /tindex/_doc/_search
    { 
      "query": { 
        "bool": { 
          "should": [
            { 
              "match": { 
                "name": "wells"
              }
            },
            { 
              "match": { 
                "age": 17
              }
            }
          ]
        }
      }
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 5]

### 1.5.3、must\_not (not) ###

# bool: must_not 查询 where name != wells
    GET /tindex/_doc/_search
    { 
      "query": { 
        "bool": { 
          "must_not": [
            { 
              "match": { 
                "name": "wells"
              }
            },
            { 
              "match": { 
                "name": "tom"
              }
            }
          ]
        }
      }
    }
    # 或者 bool: must_not 查询 where name != wells
    GET /tindex/_doc/_search
    { 
      "query": { 
        "bool": { 
          "must_not": [
            { 
              "match": { 
              	# 通过空格隔开，设置多个值
                "name": "wells tom"
              }
            }
          ]
        }
      }
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 6]

### 1.5.4、过滤器filter ###

# filter
    GET /tindex/_doc/_search
    { 
      "query": { 
        "bool": { 
          "must": [
            { 
              "match": { 
                "name": "wells"
              }
            }
          ],
          "filter": { 
            "range": { 
              "age": { 
                "lt": 30,
                "gt": 18
              }
            }
          }
        }
      }
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 7]

## 1.6、匹配多个值 ##

# 匹配多个值
    GET /tindex/_doc/_search
    { 
      "query": { 
        "match": { 
          "tags": "man 技术"
        }
      }
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 8]

# 二、精确查询 #

两个类型：

*  text：会被分词
 *  keyword：不会被分词

通过 \_analyze 对词进行分析查看，text与keyword都是fields的类型，通过类型可以区分是否精确查询

# text 与 keyword
    GET _analyze
    { 
      "analyzer": "standard",
      "text": "wells学es"
    }
    
    # text 与 keyword
    GET _analyze
    { 
      "analyzer": "keyword",
      "text": "wells学es"
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 9]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 10]  
关于分词：

*  term：查询是直接通过倒排索引指定的词条进行精确查找的，不会进行分词
 *  match：使用分词器进行解析，再进行查询

# term 与 match
    GET /tindex/_doc/_search
    { 
      "query": { 
        "match": { 
          "tags": "技术宅男"
        }
      }
    }
    
    # term 与 match
    GET /tindex/_doc/_search
    { 
      "query": { 
        "term": { 
          "tags": "技术宅男"
        }
      }
    }

## 2.1、精确匹配多个值 ##

## 2.2、高亮 ##

### 2.2.1、默认高亮 ###

# 高亮 #

GET /tindex/_doc/_search
    { 
      "query": { 
        "match": { 
          "tags": "技术"
        }
      },
      "highlight":{ 
        "fields":{ 
          "name":{ }
        }
      }
    }

### 2.2.2、自定义高亮 ###

GET /tindex/_doc/_search
    { 
      "query": { 
        "match": { 
          "tags": "技术"
        }
      },
      "highlight":{ 
        "pre_tags": "<p color='red'>",
        "post_tags": "</p>",
        "fields":{ 
          "name":{ }
        }
      }
    }

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200614215047720.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200614215346695.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20200614215700595.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20200614215912160.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 4]: https://img-blog.csdnimg.cn/20200614220536966.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 5]: https://img-blog.csdnimg.cn/20200614220659381.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 6]: https://img-blog.csdnimg.cn/20200614221036557.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 7]: https://img-blog.csdnimg.cn/20200614221646102.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 8]: https://img-blog.csdnimg.cn/20200614221930682.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 9]: https://img-blog.csdnimg.cn/20200614222741964.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc_size_16_color_FFFFFF_t_70 10]: https://img-blog.csdnimg.cn/20200614222833648.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjgzNzc=,size_16,color_FFFFFF,t_70