012-elasticsearch5.4.3【五】-搜索API【一】搜索匹配所有matchAllQuery、全文查询[matchQuery、multiMatchQuery、commonTermsQuery、queryStringQuery、simpleQueryStringQuery]

一、概述

　　查询所使用的 QueryBuilders来源于以下

import static org.elasticsearch.index.query.QueryBuilders.*;

　　请注意，您可以使用QueryBuilder对象上的toString（）方法轻松打印（也称为调试）JSON生成的查询。

1.1、匹配所有

　　最简单的查询，匹配所有文档，给它们一个_score 1.0。

QueryBuilder qb = matchAllQuery();

1.2、全文查询

　　高级全文查询通常用于在全文字段（如电子邮件正文）上运行全文查询。他们了解如何分析被查询的字段，并在执行之前将每个字段的分析器（或search_analyzer）应用于查询字符串。

　　该组中的查询是：

1）匹配查询：用于执行全文查询的标准查询，包括模糊匹配和短语或邻近查询。//查询出包含 value 的数据或者包含不连续的字符

QueryBuilder qb = matchQuery("field","value" );

示例：查询：QueryBuilder qb = matchQuery("name", "张三");

结果

数据:{"address":"benjing","age":"12","name":"张三2"}
数据:{"address":"benjing","age":"12","name":"aa张三3","num":12}
数据:{"address":"benjing","age":"12","name":"张爱三","num":12}
数据:{"address":"benjing","age":"12","name":"张三3"}
数据:{"address":"benjing","age":"12","name":"李宏旭 张三3","num":12}
数据:{"address":"benjing","age":"12","name":"张四","num":12}

2）多匹配查询：multi_match查询，匹配查询的多字段版本。

QueryBuilder qb = multiMatchQuery(
    "kimchy elasticsearch",  //值
    "user", "message"         //字段
);

示例：查询：QueryBuilder qb = multiMatchQuery("张三 12", "name","age");

结果

数据:{"address":"benjing","age":"1","name":"张三"}
数据:{"address":"benjing","age":"12","name":"张三2"}
数据:{"address":"benjing","age":"12","name":"aa张三3","num":12}
数据:{"address":"benjing","age":"12","name":"张爱三","num":12}
数据:{"address":"benjing","age":"12","name":"张三3"}
数据:{"address":"benjing","age":"12","name":"李宏旭 张三3","num":12}
数据:{"address":"benjing","age":"12","name":"王五","num":3}
数据:{"address":"benjing","age":"12","name":"张四","num":12}
数据:{"address":"benjing","age":"12","name":"王五"}

3）common_terms查询：一个更专业的查询，它提供了对不常见单词的更多偏好。

QueryBuilder qb = commonTermsQuery("field","value");

示例：查询：QueryBuilder qb = commonTermsQuery("name", "张三");

结果：

数据:{"address":"benjing","age":"1","name":"张三"}
数据:{"address":"benjing","age":"12","name":"张三2"}
数据:{"address":"benjing","age":"12","name":"aa张三3","num":12}
数据:{"address":"benjing","age":"12","name":"张爱三","num":12}
数据:{"address":"benjing","age":"12","name":"张三3"}
数据:{"address":"benjing","age":"12","name":"李宏旭 张三3","num":12}

4）query_string查询：支持紧凑的Lucene查询字符串语法，允许您在单个查询字符串中指定AND | OR | NOT条件和多字段搜索。仅限专家用户。

QueryBuilder qb = queryStringQuery("+kimchy -elasticsearch"); //value

5）simple_query_string：query_string语法的更简单，更健壮的版本，适合直接向用户公开。

QueryBuilder qb = simpleQueryStringQuery("+kimchy -elasticsearch");//value

github：https://github.com/bjlhx15/spring-cloud-base/tree/master/service6-es