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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
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