6.关于文档的基本操作(重点)

1.添加数据

PUT /zjzaki/user/1
{
	"name": "zjzaki",
	"age": 5,
	"desc": "一顿操作猛如虎，一看工资2500",
	"tags": ["技术宅","温暖","直男"]
}

2.获取数据

GET zjzaki/user/1

3.更新数据

PUT /zjzaki/user/3
{
	"name": "张三222",
	"age": 20,
	"desc": "法外狂徒",
	"tags": ["交友","旅游"]
}

Post _update, 推荐使用这种方式

PUT /zjzaki/user/3/_update
{
	"doc": {
		"name": "法外狂徒张三"
	}
}

4.简单的搜索

GET zjzaki/user/1

4.1.简单的条件查询

GET zjzaki/user/_search?q=name:zjzaki

4.2.复杂操作 select（排序，分页，高亮，模糊查询，精准查询！）

4.2.1._source 结果过滤

GET zjzaki/user/_search
{
	"query": {
		"match": {
			"name": "李"
		}
	},
	"_source": ["name","desc"]
}

我们使用java操作es，所有的方法和对象就是这里面的key

4.2.2.sort 排序

GET zjzaki/user/_search
{
	"query": {
		"match": {
			"name": "李"
		}
	},
	"sort": [
		{
			"age": {
				"order": "desc"
			}
		}
	]
}

4.2.3.分页查询

GET zjzaki/user/_search
{
	"query": {
		"match": {
			"name": "李"
		}
	},
	"sort": [
		{
			"age": {
				"order": "desc"
			}
		}
	],
	"from": 0,
	"size": 20
}

4.2.4.布尔值查询

must (and) 所有的条件都要符合

GET zjzkai/user/_search
{
	"query": {
		"bool": {
			"must": [
				{
					"match": {
						"name": "狂胜说"
					}
				},
				{
					"match": {
						"age": 3
					}
				}
			]
		}
	}
}

should (or)

must_not 不是

filter 过滤

GET zjzaki/user/_search
{
	"query": {
		"bool": {
			"must": [
				{
					"match": {
						"name": "zjzaki"
					}
				}
			],
			"fillter": {
				"range": {
					"age": {
						"lt": 10
					}
				}
			}
		}
	}
}

• gt 大于
• gte 大于等于
• lt 小于
• lte 小于等于

term 查询是直接通过倒排索引指定的词条进行查询的

关于分词：

term, 直接查询精确的值

match，会使用分词器解析（先分析文档，然后再通过分析的文档进行查询）

两个类型 text keyword

GET _analyze
{
	"analyzer": "keyword",
	"text": "zjzaki Java home"
}

GET _analyze
{
	"analyzer": "standard",
	"text": "zjzaki Java home"
}

高亮查询

GET zjzaki/user/_search
{
	"query": {
		"match": {
			"name": "zjzaki"
		}
	},
	"highlight": {
		"fields": {
			"name": {}
		}
	}
}

自定义搜索高亮条件

GET zjzaki/user/_search
{
	"query": {
		"match": {
			"name": "zjzaki"
		}
	},
	"highlight": {
		"pre_tags": "<p class='key' style='color:red'>",
		"post_tags": "</p>",
		"fields": {
			"name": {}
		}
	}
}