java es 打印es查询语句 es查询java代码

转载

数码悟透 2023-08-24 10:52:15

文章标签 java es 打印es查询语句 System 字段 Test 文章分类 Java 后端开发

matchAllQuery	匹配所有文档
queryStringQuery	基于Lucene的字段检索
wildcardQuery	通配符查询匹配多个字符，?匹配1个字符*
termQuery	词条查询
matchQuery	字段查询
idsQuery	标识符查询
fuzzyQuery	文档相似度查询
includeLower includeUpper	范围查询
boolQuery	组合查询（复杂查询）
SortOrder	排序查询

插入样例数据：

curl -XPOST http://hadoop01:9200/sanguo/dahan/_bulk -d '
{ "index": {}}    
{ "studentNo" : 1, "name" : "刘备", "male" : "男", "age" : 24 , "birthday" : "1985-02-03" , "classNo" : 1 , "address" : "湖南省长沙市" , "isLeader" : true}
{ "index": {}}            
{ "studentNo" : 2, "name" : "关羽", "male" : "男", "age" : 22 , "birthday" : "1987-08-23" , "classNo" : 2, "address" : "四川省成都市" , "isLeader" : false}
{ "index": {}}                                 
{ "studentNo" : 3, "name" : "糜夫人", "male" : "女", "age" : 19 , "birthday" : "1990-06-12" , "classNo" : 1 , "address" : "上海市" , "isLeader" : false}
{ "index": {}}
{ "studentNo" : 4, "name" : "张飞", "male" : "男", "age" : 20 , "birthday" : "1989-07-30" , "classNo" : 3 , "address" : "北京市" , "isLeader" : false}
{ "index": {}}
{ "studentNo" : 5, "name" : "诸葛亮", "male" : "男", "age" : 18 , "birthday" : "1992-04-27" , "classNo" : 2 , "address" : "江苏省南京市" , "isLeader" : true}
{ "index": {}}     
{ "studentNo" : 6, "name" : "孙尚香", "male" : "女", "age" : 16 , "birthday" : "1994-05-21" , "classNo" : 3 , "address" : "广东省深圳市" , "isLeader" : false}
{ "index": {}}              
{ "studentNo" : 7, "name" : "马超", "male" : "男", "age" : 19 , "birthday" : "1991-10-20" , "classNo" : 1 , "address" : "黑龙江省哈尔滨市" , "isLeader" : false}
{ "index": {}}                        
{ "studentNo" : 8, "name" : "赵云", "male" : "男", "age" : 23 , "birthday" : "1986-10-26" , "classNo" : 2 , "address" : "浙江省杭州市" , "isLeader" : false}
'

1：查询所有

matchAllQuery()匹配所有文件

match_all查询是Elasticsearch中最简单的查询之一。它使我们能够匹配索引中的所有文件。

/**
 *matchAllQuery()匹配所有文件
 match_all查询是Elasticsearch中最简单的查询之一。它使我们能够匹配索引中的所有文件
 * */
@Test
public void searchAll(){
    SearchResponse searchResponse = client.prepareSearch("sanguo")
            .setTypes("dahan").setQuery(QueryBuilders.matchAllQuery())
            .get();

    SearchHits hits = searchResponse.getHits(); // 获取命中次数，查询结果有多少对象
    System.out.println("查询结果有：" + hits.getTotalHits() + "条");
    Iterator<SearchHit> iterator = hits.iterator();
    while (iterator.hasNext()) {
        SearchHit next = iterator.next();
        System.out.println("name : "+ next.getSource().get("name"));
        System.out.println("studentNo : "+ next.getSource().get("studentNo"));
        System.out.println("male : "+ next.getSource().get("male"));
        System.out.println("birthday : "+ next.getSource().get("birthday"));
        System.out.println("classNo : "+ next.getSource().get("classNo"));
        System.out.println("address : "+ next.getSource().get("address"));
        System.out.println("===============================================");
    }
}

2：解析查询字符串

相比其他可用的查询，query_string查询支持全部的Apache Lucene查询语法

针对多字段的query_string查询

/**
 * 相比其他可用的查询，query_string查询支持全部的Apache Lucene查询语法
 针对多字段的query_string查询

 * */
@Test
public void query_String(){
    SearchResponse searchResponse = client.prepareSearch("sanguo").setTypes("dahan")
            .setQuery(QueryBuilders.queryStringQuery("孙尚香")).get();
    SearchHits hits = searchResponse.getHits(); // 获取命中次数，查询结果有多少对象
    System.out.println("查询结果有：" + hits.getTotalHits() + "条");
    Iterator<SearchHit> iterator = hits.iterator();
    while (iterator.hasNext()) {
        SearchHit next = iterator.next();
        System.out.println("name : "+ next.getSource().get("name"));
        System.out.println("studentNo : "+ next.getSource().get("studentNo"));
        System.out.println("male : "+ next.getSource().get("male"));
        System.out.println("birthday : "+ next.getSource().get("birthday"));
        System.out.println("classNo : "+ next.getSource().get("classNo"));
        System.out.println("address : "+ next.getSource().get("address"));
        System.out.println("===============================================");
    }
}

3：通配符查询（wildcardQuery）

*匹配多个字符，?匹配1个字符

注意：避免* 开始, 会检索大量内容造成效率缓慢

/**
 * *匹配多个字符，?匹配1个字符
 注意：避免* 开始, 会检索大量内容造成效率缓慢
 * */
@Test
public void wildcardQuery(){
    SearchResponse searchResponse = client.prepareSearch("sanguo").setTypes("dahan")
            .setQuery(QueryBuilders.wildcardQuery("address", "广东*")).get();
    SearchHits hits = searchResponse.getHits(); // 获取命中次数，查询结果有多少对象
    System.out.println("查询结果有：" + hits.getTotalHits() + "条");
    Iterator<SearchHit> iterator = hits.iterator();
    while (iterator.hasNext()) {
        SearchHit next = iterator.next();
        System.out.println("name : "+ next.getSource().get("name"));
        System.out.println("studentNo : "+ next.getSource().get("studentNo"));
        System.out.println("male : "+ next.getSource().get("male"));
        System.out.println("birthday : "+ next.getSource().get("birthday"));
        System.out.println("classNo : "+ next.getSource().get("classNo"));
        System.out.println("address : "+ next.getSource().get("address"));
        System.out.println("===============================================");
    }
}

4：词条查询（termQuery）

词条查询是Elasticsearch中的一个简单查询。它仅匹配在给定字段中含有该词条的文档，而且是确切的、未经分析的词条

termQuery("key", obj) 完全匹配

termsQuery("key", obj1, obj2..)

一次匹配多个值，有一个值是正确的，就可以查询出数据

/**
 * 词条查询是Elasticsearch中的一个简单查询。它仅匹配在给定字段中含有该词条的文档，而
 且是确切的、未经分析的词条
 termQuery("key", obj) 完全匹配
 termsQuery("key", obj1, obj2..)   一次匹配多个值，只有有一个值是正确的，就可以查询出数据

 * */
@Test
public void termQuery(){
    SearchResponse searchResponse = client.prepareSearch("sanguo").setTypes("dahan")
            .setQuery(QueryBuilders.termsQuery("name", "张飞","刘备","关羽")).get();
    SearchHits hits = searchResponse.getHits(); // 获取命中次数，查询结果有多少对象
    System.out.println("查询结果有：" + hits.getTotalHits() + "条");
    Iterator<SearchHit> iterator = hits.iterator();
    while (iterator.hasNext()) {
        SearchHit next = iterator.next();
        System.out.println("name : "+ next.getSource().get("name"));
        System.out.println("studentNo : "+ next.getSource().get("studentNo"));
        System.out.println("male : "+ next.getSource().get("male"));
        System.out.println("birthday : "+ next.getSource().get("birthday"));
        System.out.println("classNo : "+ next.getSource().get("classNo"));
        System.out.println("address : "+ next.getSource().get("address"));
        System.out.println("===============================================");
    }
}

5：字段匹配查询

match**查询把query参数中的值拿出来，加以分析，然后构建相应的查询**。使用match查询时，Elasticsearch将对一个字段选择合适的分析器，所以可以确定，传给match查询的词条将被建立索引时相同的分析器处理。

/**
 *  match query搜索的时候，首先会解析查询字符串，进行分词，然后查询，
 而term query,输入的查询内容是什么，就会按照什么去查询，并不会解析查询内容，对它分词。
 * */
@Test
public void MatchQuery(){
    SearchResponse searchResponse = client.prepareSearch("sanguo").setTypes("dahan")
 .setQuery(QueryBuilders.matchQuery("address", " 上海")).get();
    SearchHits hits = searchResponse.getHits(); // 获取命中次数，查询结果有多少对象
    System.out.println("查询结果有：" + hits.getTotalHits() + "条");
    Iterator<SearchHit> iterator = hits.iterator();
    while (iterator.hasNext()) {
        SearchHit next = iterator.next();
        System.out.println("name : "+ next.getSource().get("name"));
        System.out.println("studentNo : "+ next.getSource().get("studentNo"));
        System.out.println("male : "+ next.getSource().get("male"));
        System.out.println("birthday : "+ next.getSource().get("birthday"));
        System.out.println("classNo : "+ next.getSource().get("classNo"));
        System.out.println("address : "+ next.getSource().get("address"));
        System.out.println("===============================================");
    }


}

Matchquery和termquery的区别：

match：匹配的时候，会将查询的关键字进行分词，然后根据分词后的结果进行查询。
term：直接使用关键字进行查询，不对关键字进行分词。

multiMatchQuery("text", "field1", "field2"..); 匹配多个字段

mutilMatchQuery：

/**
 * multiMatchQuery（要搜索的值 ， 在哪些字段上）
 * */
@Test
public void mutileMatchQuery(){
    SearchResponse searchResponse = client.prepareSearch("sanguo").setTypes("dahan")
            .setQuery(QueryBuilders.multiMatchQuery("北京", "address","name")).get();
    SearchHits hits = searchResponse.getHits(); // 获取命中次数，查询结果有多少对象
    System.out.println("查询结果有：" + hits.getTotalHits() + "条");
    Iterator<SearchHit> iterator = hits.iterator();
    while (iterator.hasNext()) {
        SearchHit next = iterator.next();
        System.out.println("name : "+ next.getSource().get("name"));
        System.out.println("studentNo : "+ next.getSource().get("studentNo"));
        System.out.println("male : "+ next.getSource().get("male"));
        System.out.println("birthday : "+ next.getSource().get("birthday"));
        System.out.println("classNo : "+ next.getSource().get("classNo"));
        System.out.println("address : "+ next.getSource().get("address"));
        System.out.println("===============================================");
    }
}

6：只查询ID（标识符查询）

标识符查询是一个简单的查询，仅用提供的标识符来过滤返回的文档。

/**
 * 按照id进行查询，通过id返回我们想要的结果
 * */
@Test
public void idsQuery() {
    SearchResponse searchResponse = client.prepareSearch("sanguo").setTypes("dahan")
            .setQuery(QueryBuilders.idsQuery().addIds("AWNkQSCJzU0_wTuf7egi")).get();
    SearchHits hits = searchResponse.getHits(); // 获取命中次数，查询结果有多少对象
    System.out.println("查询结果有：" + hits.getTotalHits() + "条");
    Iterator<SearchHit> iterator = hits.iterator();
    while (iterator.hasNext()) {
        SearchHit next = iterator.next();
        System.out.println("name : "+ next.getSource().get("name"));
        System.out.println("studentNo : "+ next.getSource().get("studentNo"));
        System.out.println("male : "+ next.getSource().get("male"));
        System.out.println("birthday : "+ next.getSource().get("birthday"));
        System.out.println("classNo : "+ next.getSource().get("classNo"));
        System.out.println("address : "+ next.getSource().get("address"));
        System.out.println("===============================================");
    }
}

7：相似度查询

插入两条测试数据：

PUT /sanguo/dahan/123
{
  "name": "曹操",
  "male" : "男", 
  "age" : 40 , 
  "birthday" : "1975-02-03" , 
  "classNo" : 1 , 
  "address" : "海淀区坐落于北京市" , 
  "isLeader" : true
}

PUT /sanguo/dahan/234
{
  "name": "董卓",
  "male" : "男", 
  "age" : 35 , 
  "birthday" : "1975-02-03" , 
  "classNo" : 1 , 
  "address" : "北京it程序员" , 
  "isLeader" : true
}

fuzzy查询是模糊查询中的第三种类型，它基于编辑距离算法来匹配文档

/**
 * 相似度查询：fuzzy查询是模糊查询中的第三种类型，它基于编辑距离算法来匹配文档
 * */
@Test
public void fuzzyQuery(){
    SearchResponse searchResponse = client.prepareSearch("sanguo").setTypes("dahan")
            .setQuery(QueryBuilders.fuzzyQuery("address", "北京市")).get();
    SearchHits hits = searchResponse.getHits(); // 获取命中次数，查询结果有多少对象
    System.out.println("查询结果有：" + hits.getTotalHits() + "条");
    Iterator<SearchHit> iterator = hits.iterator();
    while (iterator.hasNext()) {
        SearchHit next = iterator.next();
        System.out.println("得分："+next.getScore());
        System.out.println("name : "+ next.getSource().get("name"));
        System.out.println("studentNo : "+ next.getSource().get("studentNo"));
        System.out.println("male : "+ next.getSource().get("male"));
        System.out.println("birthday : "+ next.getSource().get("birthday"));
        System.out.println("classNo : "+ next.getSource().get("classNo"));
        System.out.println("address : "+ next.getSource().get("address"));
        System.out.println("===============================================");
    }
}

8：范围查询

范围查询使我们能够找到在某一字段值在某个范围里的文档，字段可以是数值型，也可以是

基于字符串的

includeLower(true)：包含上界

IncludeUpper(true)：包含下界

/**
 范围查询使我们能够找到在某一字段值在某个范围里的文档，字段可以是数值型，也可以是
 基于字符串的
 includeLower(true)：包含上界
 IncludeUpper(true)：包含下界
 * */
@Test
public void rangeQuery(){
    SearchResponse searchResponse = client.prepareSearch("sanguo").setTypes("dahan")
            .setQuery(QueryBuilders.rangeQuery("age").from(18).to(22) 
                    .includeLower(true)
                    .includeUpper(false))
            .get();
    SearchHits hits = searchResponse.getHits(); // 获取命中次数，查询结果有多少对象
    Iterator<SearchHit> iterator = hits.iterator();
    while (iterator.hasNext()) {
        SearchHit next = iterator.next();
        System.out.println("得分："+next.getScore());
        System.out.println("name : "+ next.getSource().get("name"));
        System.out.println("studentNo : "+ next.getSource().get("studentNo"));
        System.out.println("male : "+ next.getSource().get("male"));
        System.out.println("birthday : "+ next.getSource().get("birthday"));
        System.out.println("classNo : "+ next.getSource().get("classNo"));
        System.out.println("address : "+ next.getSource().get("address"));
        System.out.println("age : "+ next.getSource().get("age"));
        System.out.println("===============================================");
    }
}

9：组合查询（复杂查询）

must(QueryBuilders) : AND
mustNot(QueryBuilders): NOT
should(QueryBuilders):OR

java es 打印es查询语句 es查询java代码_Test

插入一条数据：

PUT /sanguo/dahan/345
{
  "name": "貂蝉",
  "male" : "女", 
  "age" : 16 , 
  "birthday" : "2000-02-03" , 
  "classNo" : 1 , 
  "address" : "北京市女it程序员" , 
  "isLeader" : true
}

/*
  * 组合查询：
  *
must(QueryBuilders) : AND
mustNot(QueryBuilders): NOT
should(QueryBuilders):OR

  * */
  @Test
  public void boolQuery(){
      SearchResponse searchResponse = client.prepareSearch("sanguo").setTypes("dahan")
              .setQuery(QueryBuilders.boolQuery()
                      .must(QueryBuilders.matchQuery("address", "程序员"))
                      .must(QueryBuilders.termQuery("male", "女"))).get();
      SearchHits hits = searchResponse.getHits(); // 获取命中次数，查询结果有多少对象
      Iterator<SearchHit> iterator = hits.iterator();
      while (iterator.hasNext()) {
          SearchHit next = iterator.next();
          System.out.println("得分："+next.getScore());
          System.out.println("name : "+ next.getSource().get("name"));
          System.out.println("studentNo : "+ next.getSource().get("studentNo"));
          System.out.println("male : "+ next.getSource().get("male"));
          System.out.println("birthday : "+ next.getSource().get("birthday"));
          System.out.println("classNo : "+ next.getSource().get("classNo"));
          System.out.println("address : "+ next.getSource().get("address"));
          System.out.println("age : "+ next.getSource().get("age"));
          System.out.println("===============================================");
      }
  }

10：排序查询

/**
 * ASC : 正序（从小到大）
 * DESC: 倒序（从大到小）
 * */
@Test
public void SortOrderQuery(){
    SearchResponse searchResponse = client.prepareSearch("sanguo").setTypes("dahan")
            .setQuery(QueryBuilders.matchAllQuery())
            .addSort("age", SortOrder.ASC).get();
    SearchHits hits = searchResponse.getHits(); // 获取命中次数，查询结果有多少对象
    Iterator<SearchHit> iterator = hits.iterator();
    while (iterator.hasNext()) {
        SearchHit next = iterator.next();
        System.out.println("name : "+ next.getSource().get("name"));
        System.out.println("male : "+ next.getSource().get("male"));
        System.out.println("classNo : "+ next.getSource().get("classNo"));
        System.out.println("address : "+ next.getSource().get("address"));
        System.out.println("age : "+ next.getSource().get("age"));
        System.out.println("===============================================");
    }
}

本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。