elasticsearch

https://www.elastic.co/

https://www.elastic.co/cn/downloads

--head插件的使用

https://github.com/　==>  

mobz/elasticsearch-head

 

--分布式安装

--基础概念

 

{
    "settings": {
        "number_of_shards": 3,
        "number_of_replicas": 1
    },
    "mappings": {
        "man": {
            "properties": {
                "name": {
                    "type": "text"
                },
                "country": {
                    "type": "keyword"
                },
                "age": {
                    "type": "integer"
                },
                "date": {
                    "type": "date",
                    "format": "yyyy-MM-dd HH:mm:ss|| yyyy-MM-dd||epoch_millis"
                }
            }
        },
        "woman": {
            
        }
    }
}

put

ip:端口/索引/类型/id

{
    "name": "tom",
    "country": "US",
    "age": 30,
    "date": "1987-05-05"
}

注: post方式, 自动生成id, 无序指定id值

post

ip:端口/索引/类型/id/_update

{
    "doc": {
        "name": "haah"
    }
}

{
    "script": {
        "lang": "painless",
        "inline": "ctx._source.age += 10"
    }
}

{
    "script": {
        "lang": "painless",
        "inline": "ctx._source.age = parmas.age",
        "parmas": {
            "age": 100
        }
    }
}

注: delete方式

--基本查询

{
    "settings": {
        "number_of_shards": 3,
        "number_of_replicas": 1
    },
    "mappings": {
        "novel": {
            "properties": {
                "word_count": {
                    "type": "integer"
                },
                "author": {
                    "type": "keyword"
                },
                "title": {
                    "type": "text"
                },
                "publish_date": {
                    "type": "date",
                    "format": "yyyy-MM-dd HH:mm:ss|| yyyy-MM-dd||epoch_millis"
                }
            }
        }
    }
}

get:

post: ip:端口/索引/类型/_search

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

{
    "query": {
        "match_all": {}
    },
    "from": 1,
    "size": 2
}

{
    "query": {
        "match_all": {
            "title": "ElasticSearch"
        }
    },
    "sort": [
        {"publish_date": {"order": "desc"}}    
    ]
}

{
    "aggs": {
        "group_by_word_count": {
            "terms": {
                "field": "word_count"
            }
        }
    }
}

{
    "aggs": {
        "group_by_word_count": {
            "terms": {
                "field": "word_count"
            }
        },
        "group_by_publish_date": {
            "terms": {
                "field": "publish_date"
            }
        }
    }
}

{
    "aggs": {
        "group_by_word_count": {
            "stats": {
                "field": "word_count"
            }
        }
    }
}

{
    "aggs": {
        "group_by_word_count": {
            "min": {
                "field": "word_count"
            }
        }
    }
}

--高级查询

1全文本

模糊匹配
{
    "query": {
        "match": {
            "title": "ElasticSearch入门"
        }
    }
}

整个
{
    "query": {
        "match_phrase": {
            "title": "ElasticSearch入门"
        }
    }
}

多字段

{
    "query": {
        "multi_match": {
            "query": "haah",
            "fields": ["author", "title"]
        }
    }
}

语法查询
{
    "query": {
        "query_string": {
            "query": "ElasticSearch AND 大发",
        }
    }
}

{
    "query": {
        "query_string": {
            "query": "(ElasticSearch AND 大发) OR Pythonh",
        }
    }
}

{
    "query": {
        "query_string": {
            "query": "ElasticSearch OR haha",
            "fields": ["title", "author"]
        }
    }
}

2字段查询(结构化的查询)

{
    "query": {
        "term": {
            "word_count": 1000
        }
    }
}

{
    "query": {
        "term": {
            "author": "haha"
        }
    }
}

范围
{
    "query": {
        "range": {
            "word_count": {
                "gte": 1000,
                "lte": 2000
            }
        }
    }
}

{
    "query": {
        "range": {
            "publish_date": {
                "gt": "2017-01-01",
                "lte": "2017-12-31"
            }
        }
    }
}

{
    "query": {
        "range": {
            "publish_date": {
                "gt": "2017-01-01",
                "lte": "now"
            }
        }
    }
}

{
    "query": {
        "bool": {
            "filter": {
                "term": {
                    "word_count": 1000
                }
            }
        }
    }
}

1固定分数查询

{
    "query": {
        "constant_score": {
            "filter": {
                "match": {
                    "title": "ElasticSearch入门"
                }
            }
        }
    }
}

{
    "query": {
        "constant_score": {
            "filter": {
                "match": {
                    "title": "ElasticSearch入门"
                }
            },
            "boost": 2
        }
    }
}

2布尔查询

{
    "query": {
        "bool": {
            "should": [
                {
                    "match": {
                        "author": "haha"
                    }
                },
                {
                    "match": {
                        "title": "ElasticSearch"
                    }
                }
            ]
        }
    }
}

{
    "query": {
        "bool": {
            "must": [
                {
                    "match": {
                        "author": "haha"
                    }
                },
                {
                    "match": {
                        "title": "ElasticSearch"
                    }
                }
            ]
        }
    }
}

{
    "query": {
        "bool": {
            "must": [
                {
                    "match": {
                        "author": "haha"
                    }
                },
                {
                    "match": {
                        "title": "ElasticSearch"
                    }
                }
            ]
        },
        "filter": [
            {
                "term": {
                    "word_count": 1000
                }
            }
        ]
    }
}

{
    "query": {
        "bool": {
            "must_not": {
                "term": {
                    "author": "haah"
                }
            }
        }
    }
}

spring boot 集成 es