前提：

1、ES服务成功启动

　　

2、node.js成功启动

　　

一、创建索引库

1、目录展示

　　

2、导入依赖

  1. <dependency>
  2.       <groupId>org.elasticsearch</groupId>
  3.       <artifactId>elasticsearch</artifactId>
  4.       <version>5.6.8</version>
  5.     </dependency>
  6.  
  7.     <dependency>
  8.       <groupId>org.elasticsearch.client</groupId>
  9.       <artifactId>transport</artifactId>
  10.       <version>5.6.8</version>
  11.     </dependency>
  12.  
  13.     <dependency>
  14.       <groupId>org.apache.logging.log4j</groupId>
  15.       <artifactId>log4j-to-slf4j</artifactId>
  16.       <version>2.9.1</version>
  17.     </dependency>
  18.  
  19.     <dependency>
  20.       <groupId>org.slf4j</groupId>
  21.       <artifactId>slf4j-api</artifactId>
  22.       <version>1.7.24</version>
  23.     </dependency>
  24.  
  25.     <dependency>
  26.       <groupId>org.slf4j</groupId>
  27.       <artifactId>slf4j-simple</artifactId>
  28.       <version>1.7.21</version>
  29.     </dependency>
  30.  
  31.     <dependency>
  32.       <groupId>log4j</groupId>
  33.       <artifactId>log4j</artifactId>
  34.       <version>1.2.12</version>
  35.     </dependency>

3、MyESTest代码

  1. package com.zn;
  2.  
  3. import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
  4. import org.elasticsearch.client.Requests;
  5. import org.elasticsearch.client.transport.TransportClient;
  6. import org.elasticsearch.common.settings.Settings;
  7. import org.elasticsearch.common.transport.InetSocketTransportAddress;
  8. import org.elasticsearch.common.xcontent.XContentBuilder;
  9. import org.elasticsearch.common.xcontent.XContentFactory;
  10. import org.elasticsearch.transport.client.PreBuiltTransportClient;
  11. import org.junit.jupiter.api.Test;
  12.  
  13. import java.io.IOException;
  14. import java.net.InetAddress;
  15. import java.net.UnknownHostException;
  16. import java.util.concurrent.ExecutionException;
  17.  
  18. public class MyESTest {
  19.  
  20.     /**
  21.      * 创建索引
  22.      * @throws UnknownHostException
  23.      */
  24.     @Test
  25.     public void creatIndex() throws UnknownHostException {
  26.         //创建Client连接对象
  27.         Settings settings = Settings.builder().put("cluster.name", "my-application").build();
  28.         //设置IP地址和端口号
  29.         TransportClient client = new PreBuiltTransportClient(settings).addTransportAddress(
  30.                 new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));
  31.         //创建名称为es_test1的索引
  32.         client.admin().indices().prepareCreate("es_test1").get();
  33.         //释放资源
  34.         client.close();
  35.     }
  36. }

4、修改elasticsearch.yml配置文件

　　cluster.name与代码块中cluster.name必须一致！！

　　

5、重启elasticsearch

6、控制台效果

　　

7、访问localhost:9100查看

　　

　　

二、创建映射mapping

1、MyESTest代码

  1. package com.zn;
  2.  
  3. import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
  4. import org.elasticsearch.client.Requests;
  5. import org.elasticsearch.client.transport.TransportClient;
  6. import org.elasticsearch.common.settings.Settings;
  7. import org.elasticsearch.common.transport.InetSocketTransportAddress;
  8. import org.elasticsearch.common.xcontent.XContentBuilder;
  9. import org.elasticsearch.common.xcontent.XContentFactory;
  10. import org.elasticsearch.transport.client.PreBuiltTransportClient;
  11. import org.junit.jupiter.api.Test;
  12.  
  13. import java.io.IOException;
  14. import java.net.InetAddress;
  15. import java.net.UnknownHostException;
  16. import java.util.concurrent.ExecutionException;
  17.  
  18. public class MyESTest {
  19.  
  20.     /**
  21.      * 创建映射mapping
  22.      */
  23.     @Test
  24.     public void creatMapping() throws IOException, ExecutionException, InterruptedException {
  25.         //创建Client连接对象
  26.         Settings settings = Settings.builder().put("cluster.name", "my-application").build();
  27.         //设置IP地址和端口号
  28.         TransportClient client = new PreBuiltTransportClient(settings).addTransportAddress(
  29.                 new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));
  30.  
  31.         //添加映射
  32.         XContentBuilder builder= XContentFactory.jsonBuilder()
  33.                 .startObject()
  34.                 .startObject("article")
  35.                 .startObject("properties")
  36.                 .startObject("id")
  37.                 .field("type","integer").field("store","yes")
  38.                 .endObject()
  39.                 .startObject("title")
  40.                 .field("type","string").field("store","yes").field("analyzer","ik_smart")
  41.                 .endObject()
  42.                 .startObject("content")
  43.                 .field("type","string").field("store","yes").field("analyzer","ik_smart")
  44.                 .endObject()
  45.                 .endObject()
  46.                 .endObject()
  47.                 .endObject();
  48.         //创建映射
  49.         PutMappingRequest mappingRequest= Requests.putMappingRequest("es_test1").type("article").source(builder);
  50.         client.admin().indices().putMapping(mappingRequest).get();
  51.         //释放资源
  52.         client.close();
  53.     }
  54. }

2、访问localhost:9100查看

　　

3、查看mappings

　　

三、创建索引库指定Mapping信息

1、MyESTest代码

  1. package com.zn.myTest;
  2.  
  3. import com.fasterxml.jackson.core.JsonProcessingException;
  4. import com.fasterxml.jackson.databind.ObjectMapper;
  5. import com.zn.entity.Article;
  6. import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
  7. import org.elasticsearch.action.search.SearchRequestBuilder;
  8. import org.elasticsearch.action.search.SearchResponse;
  9. import org.elasticsearch.client.Requests;
  10. import org.elasticsearch.client.transport.TransportClient;
  11. import org.elasticsearch.common.settings.Settings;
  12. import org.elasticsearch.common.text.Text;
  13. import org.elasticsearch.common.transport.InetSocketTransportAddress;
  14. import org.elasticsearch.common.xcontent.XContentBuilder;
  15. import org.elasticsearch.common.xcontent.XContentFactory;
  16. import org.elasticsearch.common.xcontent.XContentType;
  17. import org.elasticsearch.index.query.QueryBuilders;
  18. import org.elasticsearch.search.SearchHit;
  19. import org.elasticsearch.search.SearchHits;
  20. import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
  21. import org.elasticsearch.transport.client.PreBuiltTransportClient;
  22. import org.junit.jupiter.api.Test;
  23.  
  24. import java.io.IOException;
  25. import java.net.InetAddress;
  26. import java.net.UnknownHostException;
  27. import java.util.Iterator;
  28. import java.util.concurrent.ExecutionException;
  29.  
  30. public class MyESTest {
  31.  
  32.     /**
  33.      * 创建索引库指定Mapping信息
  34.      */
  35.     @Test
  36.     public void createIndexAndMapping() throws IOException {
  37.         //创建Client连接对象
  38.         Settings settings = Settings.builder().put("cluster.name", "my-application").build();
  39.         //设置IP地址和端口号
  40.         TransportClient client = new PreBuiltTransportClient(settings).addTransportAddress(
  41.                 new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));
  42.         //创建索引库
  43.         client.admin().indices().prepareCreate("es_test2").get();
  44.         //创建Mapping信息
  45.         //创建一个XContentBuilder对象，用于拼接JSON格式字符串
  46.         XContentBuilder xContentBuilder = XContentFactory.jsonBuilder();
  47.         xContentBuilder.startObject().startObject("article1").startObject("properties")
  48.                 .startObject("id").field("type","integer").field("store","yes").field("index","not_analyzed")
  49.                 .endObject()
  50.                 .startObject("title").field("type","text").field("store","yes").field("index","analyzed").field("analyzer","ik_max_word")
  51.                 .endObject()
  52.                 .startObject("content").field("type","text").field("store","yes").field("index","analyzed").field("analyzer","ik_max_word")
  53.                 .endObject()
  54.                 .endObject().endObject().endObject();
  55.  
  56.         client.admin().indices().preparePutMapping("es_test2").setType("article1").setSource(xContentBuilder).get();
  57.  
  58.         //关闭资源
  59.         client.close();
  60.     }
  61.  
  62. }

2、访问localhost:9100查看

　　

　　

四、删除索引库

1、MyESTest代码

  1. package com.zn.myTest;
  2.  
  3. import com.fasterxml.jackson.core.JsonProcessingException;
  4. import com.fasterxml.jackson.databind.ObjectMapper;
  5. import com.zn.entity.Article;
  6. import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
  7. import org.elasticsearch.action.search.SearchRequestBuilder;
  8. import org.elasticsearch.action.search.SearchResponse;
  9. import org.elasticsearch.client.Requests;
  10. import org.elasticsearch.client.transport.TransportClient;
  11. import org.elasticsearch.common.settings.Settings;
  12. import org.elasticsearch.common.text.Text;
  13. import org.elasticsearch.common.transport.InetSocketTransportAddress;
  14. import org.elasticsearch.common.xcontent.XContentBuilder;
  15. import org.elasticsearch.common.xcontent.XContentFactory;
  16. import org.elasticsearch.common.xcontent.XContentType;
  17. import org.elasticsearch.index.query.QueryBuilders;
  18. import org.elasticsearch.search.SearchHit;
  19. import org.elasticsearch.search.SearchHits;
  20. import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
  21. import org.elasticsearch.transport.client.PreBuiltTransportClient;
  22. import org.junit.jupiter.api.Test;
  23.  
  24. import java.io.IOException;
  25. import java.net.InetAddress;
  26. import java.net.UnknownHostException;
  27. import java.util.Iterator;
  28. import java.util.concurrent.ExecutionException;
  29.  
  30. public class MyESTest {
  31.  
  32.     /**
  33.      * 删除索引库
  34.      */
  35.     @Test
  36.     public void deleteIndex() throws UnknownHostException {
  37.         //创建Client连接对象
  38.         Settings settings = Settings.builder().put("cluster.name", "my-application").build();
  39.         //设置IP地址和端口号
  40.         TransportClient client = new PreBuiltTransportClient(settings).addTransportAddress(
  41.                 new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));
  42.         //删除索引库
  43.         client.admin().indices().prepareDelete("es_test2").get();
  44.  
  45.         //关闭资源
  46.         client.close();
  47.     }
  48.  
  49. }

2、删除前

　　

3、删除后

　　

五、通过XContentBuilder建立文档document

1、MyESTest代码

  1. package com.zn;
  2.  
  3. import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
  4. import org.elasticsearch.client.Requests;
  5. import org.elasticsearch.client.transport.TransportClient;
  6. import org.elasticsearch.common.settings.Settings;
  7. import org.elasticsearch.common.transport.InetSocketTransportAddress;
  8. import org.elasticsearch.common.xcontent.XContentBuilder;
  9. import org.elasticsearch.common.xcontent.XContentFactory;
  10. import org.elasticsearch.transport.client.PreBuiltTransportClient;
  11. import org.junit.jupiter.api.Test;
  12.  
  13. import java.io.IOException;
  14. import java.net.InetAddress;
  15. import java.net.UnknownHostException;
  16. import java.util.concurrent.ExecutionException;
  17.  
  18. public class MyESTest {
  19.  
  20.     /**
  21.      * 通过XContentBuilder创建文档document
  22.      */
  23.     @Test
  24.     public void createXContentBuilderDocument() throws IOException {
  25.         //创建Client连接对象
  26.         Settings settings = Settings.builder().put("cluster.name", "my-application").build();
  27.         //设置IP地址和端口号
  28.         TransportClient client = new PreBuiltTransportClient(settings).addTransportAddress(
  29.                 new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));
  30.  
  31.         //创建文档信息
  32.         XContentBuilder builder = XContentFactory.jsonBuilder()
  33.                 .startObject()
  34.                 .field("id", 1)
  35.                 .field("title", "ElasticSearch是一个基于Lucene的搜索服务器")
  36.                 .field("content",
  37.                         "它提供了一个分布式多用户能力的全文搜索引擎，基于RESTful web接口。" +
  38.                                 "Elasticsearch是用 Java开发的，并作为Apache许可条款下的开放源码发布，" +
  39.                                 "是当前流行的企业级搜索引擎。设计用于云计算中，能够达到 实时搜索，稳定，可靠，快速，安装使用方便。")
  40.                 .endObject();
  41.         //创建文档对象
  42.         //参数一：索引对象；参数二：类型；参数三：建立id
  43.         client.prepareIndex("es_test1", "article", "1").setSource(builder).get();
  44.         //释放资源
  45.         client.close();
  46.     }
  47. }

2、访问localhost:9100查看

　　

六、使用Jackson转换实体建立文档document

1、目录展示

　　

2、创建Article实体

  1. package com.zn.entity;
  2.  
  3. public class Article {
  4.  
  5.     private Integer id;
  6.     private String title;
  7.     private String content;
  8.  
  9.     public Integer getId() {
  10.         return id;
  11.     }
  12.  
  13.     public void setId(Integer id) {
  14.         this.id = id;
  15.     }
  16.  
  17.     public String getTitle() {
  18.         return title;
  19.     }
  20.  
  21.     public void setTitle(String title) {
  22.         this.title = title;
  23.     }
  24.  
  25.     public String getContent() {
  26.         return content;
  27.     }
  28.  
  29.     public void setContent(String content) {
  30.         this.content = content;
  31.     }
  32. }

3、添加jackson坐标 （导入依赖）

　　

  1.     <dependency>
  2.       <groupId>com.fasterxml.jackson.core</groupId>
  3.       <artifactId>jackson-core</artifactId>
  4.       <version>2.8.1</version>
  5.     </dependency>
  6.     <dependency>
  7.       <groupId>com.fasterxml.jackson.core</groupId>
  8.       <artifactId>jackson-databind</artifactId>
  9.       <version>2.8.1</version>
  10.     </dependency>
  11.     <dependency>
  12.       <groupId>com.fasterxml.jackson.core</groupId>
  13.       <artifactId>jackson-annotations</artifactId>
  14.       <version>2.8.1</version>
  15.     </dependency>

4、MyESTest代码

  1. package com.zn.myTest;
  2.  
  3. import com.fasterxml.jackson.core.JsonProcessingException;
  4. import com.fasterxml.jackson.databind.ObjectMapper;
  5. import com.zn.entity.Article;
  6. import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
  7. import org.elasticsearch.client.Requests;
  8. import org.elasticsearch.client.transport.TransportClient;
  9. import org.elasticsearch.common.settings.Settings;
  10. import org.elasticsearch.common.transport.InetSocketTransportAddress;
  11. import org.elasticsearch.common.xcontent.XContentBuilder;
  12. import org.elasticsearch.common.xcontent.XContentFactory;
  13. import org.elasticsearch.common.xcontent.XContentType;
  14. import org.elasticsearch.transport.client.PreBuiltTransportClient;
  15. import org.junit.jupiter.api.Test;
  16.  
  17. import java.io.IOException;
  18. import java.net.InetAddress;
  19. import java.net.UnknownHostException;
  20. import java.util.concurrent.ExecutionException;
  21.  
  22. public class MyESTest {
  23.     /**
  24.      * 使用Jackson转换实体建立文档document
  25.      */
  26.     @Test
  27.     public void creatJacksonDocument() throws UnknownHostException, JsonProcessingException {
  28.         //创建Client连接对象
  29.         Settings settings = Settings.builder().put("cluster.name", "my-application").build();
  30.         //设置IP地址和端口号
  31.         TransportClient client = new PreBuiltTransportClient(settings).addTransportAddress(
  32.                 new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));
  33.  
  34.         //描述json 数据
  35.         Article article = new Article();
  36.         article.setId(2);
  37.         article.setTitle("搜索工作其实很快乐");
  38.         article.setContent("我们希望我们的搜索解决方案要快，我们希望有一个零配置和一个完全免费的搜索模式");
  39.  
  40.         ObjectMapper objectMapper=new ObjectMapper();
  41.  
  42.         //创建文档
  43.         client.prepareIndex("es_test1","article",article.getId().toString())
  44.                 .setSource(objectMapper.writeValueAsString(article).getBytes(),
  45.                         XContentType.JSON).get();
  46.  
  47.         //释放资源
  48.         client.close();
  49.  
  50.     }
  51. }

5、访问localhost:9100查看

　　

七、关键词查询文档document

1、MyESTest代码

  1. package com.zn.myTest;
  2.  
  3. import com.fasterxml.jackson.core.JsonProcessingException;
  4. import com.fasterxml.jackson.databind.ObjectMapper;
  5. import com.zn.entity.Article;
  6. import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
  7. import org.elasticsearch.action.search.SearchRequestBuilder;
  8. import org.elasticsearch.action.search.SearchResponse;
  9. import org.elasticsearch.client.Requests;
  10. import org.elasticsearch.client.transport.TransportClient;
  11. import org.elasticsearch.common.settings.Settings;
  12. import org.elasticsearch.common.transport.InetSocketTransportAddress;
  13. import org.elasticsearch.common.xcontent.XContentBuilder;
  14. import org.elasticsearch.common.xcontent.XContentFactory;
  15. import org.elasticsearch.common.xcontent.XContentType;
  16. import org.elasticsearch.index.query.QueryBuilders;
  17. import org.elasticsearch.search.SearchHit;
  18. import org.elasticsearch.search.SearchHits;
  19. import org.elasticsearch.transport.client.PreBuiltTransportClient;
  20. import org.junit.jupiter.api.Test;
  21.  
  22. import java.io.IOException;
  23. import java.net.InetAddress;
  24. import java.net.UnknownHostException;
  25. import java.util.Iterator;
  26. import java.util.concurrent.ExecutionException;
  27.  
  28. public class MyESTest {
  29.     /**
  30.      * 关键词查询文档document
  31.      */
  32.     @Test
  33.     public void selectWordDocument() throws UnknownHostException {
  34.         //创建Client连接对象
  35.         Settings settings = Settings.builder().put("cluster.name", "my-application").build();
  36.         //设置IP地址和端口号
  37.         TransportClient client = new PreBuiltTransportClient(settings).addTransportAddress(
  38.                 new InetSocketTransportAddress(InetAddress.
  39.                         getByName("127.0.0.1"), 9300));
  40.  
  41.         //设置搜索条件
  42.         SearchResponse searchResponse = client.prepareSearch("es_test1")
  43.                 .setTypes("article")
  44.                 .setQuery(QueryBuilders.termQuery("content","搜索")).get();
  45.  
  46.         //获取命中次数，查询结果有多少对象
  47.         SearchHits hits = searchResponse.getHits();
  48.         System.out.println("查询结果有："+hits.getTotalHits()+"条");
  49.         //遍历搜索结果数据
  50.         Iterator<SearchHit> iterator = hits.iterator();
  51.         while (iterator.hasNext()){
  52.             //每个查询对象
  53.             SearchHit searchHit = iterator.next();
  54.             //获取字符串格式打印
  55.             System.out.println(searchHit.getSourceAsString());
  56.             System.out.println("title:"+searchHit.getSource().get("title"));
  57.         }
  58.  
  59.         //释放资源
  60.         client.close();
  61.  
  62.     }
  63. }

2、控制台

　　

八、字符串查询文档document

1、MyESTest代码

  1. package com.zn.myTest;
  2.  
  3. import com.fasterxml.jackson.core.JsonProcessingException;
  4. import com.fasterxml.jackson.databind.ObjectMapper;
  5. import com.zn.entity.Article;
  6. import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
  7. import org.elasticsearch.action.search.SearchResponse;
  8. import org.elasticsearch.client.Requests;
  9. import org.elasticsearch.client.transport.TransportClient;
  10. import org.elasticsearch.common.settings.Settings;
  11. import org.elasticsearch.common.transport.InetSocketTransportAddress;
  12. import org.elasticsearch.common.xcontent.XContentBuilder;
  13. import org.elasticsearch.common.xcontent.XContentFactory;
  14. import org.elasticsearch.common.xcontent.XContentType;
  15. import org.elasticsearch.index.query.QueryBuilders;
  16. import org.elasticsearch.search.SearchHit;
  17. import org.elasticsearch.search.SearchHits;
  18. import org.elasticsearch.transport.client.PreBuiltTransportClient;
  19. import org.junit.jupiter.api.Test;
  20.  
  21. import java.io.IOException;
  22. import java.net.InetAddress;
  23. import java.net.UnknownHostException;
  24. import java.util.Iterator;
  25. import java.util.concurrent.ExecutionException;
  26.  
  27. public class MyESTest {
  28.  
  29.     /**
  30.      * 字符串查询文档document
  31.      */
  32.     @Test
  33.     public void selectStringDocument() throws UnknownHostException {
  34.         //创建Client连接对象
  35.         Settings settings = Settings.builder().put("cluster.name", "my-application").build();
  36.         //设置IP地址和端口号
  37.         TransportClient client = new PreBuiltTransportClient(settings).addTransportAddress(
  38.                 new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));
  39.  
  40.         //设置搜索条件
  41.         SearchResponse searchResponse = client.prepareSearch("es_test1")
  42.                 .setTypes("article")
  43.                 .setQuery(QueryBuilders.queryStringQuery("搜索")).get();
  44.  
  45.         //获取命中次数，查询结果有多少对象
  46.         SearchHits hits = searchResponse.getHits();
  47.         System.out.println("查询结果有："+hits.getTotalHits()+"条");
  48.         //遍历搜索结果数据
  49.         Iterator<SearchHit> iterator = hits.iterator();
  50.         while (iterator.hasNext()){
  51.             //每个查询对象
  52.             SearchHit searchHit = iterator.next();
  53.             //获取字符串格式打印
  54.             System.out.println(searchHit.getSourceAsString());
  55.             System.out.println("title:"+searchHit.getSource().get("title"));
  56.         }
  57.         //释放资源
  58.         client.close();
  59.     }
  60. }

2、控制台

　　

九、使用文档id查询文档

1、MyESTest代码

  1. package com.zn.myTest;
  2.  
  3. import com.fasterxml.jackson.core.JsonProcessingException;
  4. import com.fasterxml.jackson.databind.ObjectMapper;
  5. import com.zn.entity.Article;
  6. import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
  7. import org.elasticsearch.action.search.SearchResponse;
  8. import org.elasticsearch.client.Requests;
  9. import org.elasticsearch.client.transport.TransportClient;
  10. import org.elasticsearch.common.settings.Settings;
  11. import org.elasticsearch.common.transport.InetSocketTransportAddress;
  12. import org.elasticsearch.common.xcontent.XContentBuilder;
  13. import org.elasticsearch.common.xcontent.XContentFactory;
  14. import org.elasticsearch.common.xcontent.XContentType;
  15. import org.elasticsearch.index.query.QueryBuilders;
  16. import org.elasticsearch.search.SearchHit;
  17. import org.elasticsearch.search.SearchHits;
  18. import org.elasticsearch.transport.client.PreBuiltTransportClient;
  19. import org.junit.jupiter.api.Test;
  20.  
  21. import java.io.IOException;
  22. import java.net.InetAddress;
  23. import java.net.UnknownHostException;
  24. import java.util.Iterator;
  25. import java.util.concurrent.ExecutionException;
  26.  
  27. public class MyESTest {
  28.  
  29.     /**
  30.      * 使用文档id查询文档
  31.      */
  32.     @Test
  33.     public void selectIdDocument() throws UnknownHostException {
  34.         //创建Client连接对象
  35.         Settings settings = Settings.builder().put("cluster.name", "my-application").build();
  36.         //设置IP地址和端口号
  37.         TransportClient client = new PreBuiltTransportClient(settings).addTransportAddress(
  38.                 new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));
  39.  
  40.         //设置搜索条件
  41.         SearchResponse searchResponse = client.prepareSearch("es_test1")
  42.                 .setTypes("article")
  43.                 .setQuery(QueryBuilders.idsQuery().addIds("2")).get();
  44.         //获取命中次数，查询结果有多少对象
  45.         SearchHits hits = searchResponse.getHits();
  46.         System.out.println("查询结果有："+hits.getTotalHits()+"条");
  47.         //遍历搜索结果数据
  48.         Iterator<SearchHit> iterator = hits.iterator();
  49.         while (iterator.hasNext()){
  50.             //每个查询对象
  51.             SearchHit searchHit = iterator.next();
  52.             //获取字符串格式打印
  53.             System.out.println(searchHit.getSourceAsString());
  54.             System.out.println("title:"+searchHit.getSource().get("title"));
  55.         }
  56.         //释放资源
  57.         client.close();
  58.     }
  59. }

2、控制台

　　

十、删除文档

1、MyESTest代码

  1. package com.zn.myTest;
  2.  
  3. import com.fasterxml.jackson.core.JsonProcessingException;
  4. import com.fasterxml.jackson.databind.ObjectMapper;
  5. import com.zn.entity.Article;
  6. import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
  7. import org.elasticsearch.action.search.SearchRequestBuilder;
  8. import org.elasticsearch.action.search.SearchResponse;
  9. import org.elasticsearch.client.Requests;
  10. import org.elasticsearch.client.transport.TransportClient;
  11. import org.elasticsearch.common.settings.Settings;
  12. import org.elasticsearch.common.text.Text;
  13. import org.elasticsearch.common.transport.InetSocketTransportAddress;
  14. import org.elasticsearch.common.xcontent.XContentBuilder;
  15. import org.elasticsearch.common.xcontent.XContentFactory;
  16. import org.elasticsearch.common.xcontent.XContentType;
  17. import org.elasticsearch.index.query.QueryBuilders;
  18. import org.elasticsearch.search.SearchHit;
  19. import org.elasticsearch.search.SearchHits;
  20. import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
  21. import org.elasticsearch.transport.client.PreBuiltTransportClient;
  22. import org.junit.jupiter.api.Test;
  23.  
  24. import java.io.IOException;
  25. import java.net.InetAddress;
  26. import java.net.UnknownHostException;
  27. import java.util.Iterator;
  28. import java.util.concurrent.ExecutionException;
  29.  
  30. public class MyESTest {
  31.  
  32.     /**
  33.      * 删除文档
  34.      */
  35.     @Test
  36.     public void deleteDocument() throws UnknownHostException, JsonProcessingException {
  37.         //创建Client连接对象
  38.         Settings settings = Settings.builder().put("cluster.name", "my-application").build();
  39.         //设置IP地址和端口号
  40.         TransportClient client = new PreBuiltTransportClient(settings).addTransportAddress(
  41.                 new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));
  42.  
  43.         //删除文档
  44.         client.prepareDelete("es_test1","article","14").get();
  45.  
  46.         client.close();
  47.     }
  48.  
  49. }

2、删除前

　　

3、删除后

　　

十一、查询文档分页操作

1、批量插入数据

  1. package com.zn.myTest;
  2.  
  3. import com.fasterxml.jackson.core.JsonProcessingException;
  4. import com.fasterxml.jackson.databind.ObjectMapper;
  5. import com.zn.entity.Article;
  6. import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
  7. import org.elasticsearch.action.search.SearchResponse;
  8. import org.elasticsearch.client.Requests;
  9. import org.elasticsearch.client.transport.TransportClient;
  10. import org.elasticsearch.common.settings.Settings;
  11. import org.elasticsearch.common.transport.InetSocketTransportAddress;
  12. import org.elasticsearch.common.xcontent.XContentBuilder;
  13. import org.elasticsearch.common.xcontent.XContentFactory;
  14. import org.elasticsearch.common.xcontent.XContentType;
  15. import org.elasticsearch.index.query.QueryBuilders;
  16. import org.elasticsearch.search.SearchHit;
  17. import org.elasticsearch.search.SearchHits;
  18. import org.elasticsearch.transport.client.PreBuiltTransportClient;
  19. import org.junit.jupiter.api.Test;
  20.  
  21. import java.io.IOException;
  22. import java.net.InetAddress;
  23. import java.net.UnknownHostException;
  24. import java.util.Iterator;
  25. import java.util.concurrent.ExecutionException;
  26.  
  27. public class MyESTest {
  28.  
  29.     /**
  30.      * 查询文档分页操作---批量插入数据
  31.      */
  32.     @Test
  33.     public void AddManyDocument() throws UnknownHostException, JsonProcessingException {
  34.         //创建Client连接对象
  35.         Settings settings = Settings.builder().put("cluster.name", "my-application").build();
  36.         //设置IP地址和端口号
  37.         TransportClient client = new PreBuiltTransportClient(settings).addTransportAddress(
  38.                 new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));
  39.  
  40.         ObjectMapper objectMapper=new ObjectMapper();
  41.  
  42.         for (int i=1;i<=50;i++) {
  43.             Article article = new Article();
  44.             //描述json 数据
  45.             article.setId(i);
  46.             article.setTitle(i + "搜索工作其实很快乐");
  47.             article.setContent(i + "我们希望我们的搜索解决方案要快，我们希望有一个零配置和一个完全免费的搜索模式");
  48.  
  49.             //创建文档
  50.             client.prepareIndex("es_test1", "article", article.getId().toString())
  51.                     .setSource(objectMapper.writeValueAsString(article).getBytes(),
  52.                             XContentType.JSON).get();
  53.         }
  54.  
  55.         //释放资源
  56.         client.close();
  57.     }
  58. }

2、访问localhost:9100查看

　　

3、分页查询

  1. package com.zn.myTest;
  2.  
  3. import com.fasterxml.jackson.core.JsonProcessingException;
  4. import com.fasterxml.jackson.databind.ObjectMapper;
  5. import com.zn.entity.Article;
  6. import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
  7. import org.elasticsearch.action.search.SearchRequestBuilder;
  8. import org.elasticsearch.action.search.SearchResponse;
  9. import org.elasticsearch.client.Requests;
  10. import org.elasticsearch.client.transport.TransportClient;
  11. import org.elasticsearch.common.settings.Settings;
  12. import org.elasticsearch.common.transport.InetSocketTransportAddress;
  13. import org.elasticsearch.common.xcontent.XContentBuilder;
  14. import org.elasticsearch.common.xcontent.XContentFactory;
  15. import org.elasticsearch.common.xcontent.XContentType;
  16. import org.elasticsearch.index.query.QueryBuilders;
  17. import org.elasticsearch.search.SearchHit;
  18. import org.elasticsearch.search.SearchHits;
  19. import org.elasticsearch.transport.client.PreBuiltTransportClient;
  20. import org.junit.jupiter.api.Test;
  21.  
  22. import java.io.IOException;
  23. import java.net.InetAddress;
  24. import java.net.UnknownHostException;
  25. import java.util.Iterator;
  26. import java.util.concurrent.ExecutionException;
  27.  
  28. public class MyESTest {
  29.  
  30.     /**
  31.      * 分页查询
  32.      */
  33.     @Test
  34.     public void selectDocument() throws UnknownHostException {
  35.         //创建Client连接对象
  36.         Settings settings = Settings.builder().put("cluster.name", "my-application").build();
  37.         //设置IP地址和端口号
  38.         TransportClient client = new PreBuiltTransportClient(settings).addTransportAddress(
  39.                 new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));
  40.  
  41.         //搜索数据  默认每页10条记录
  42.         SearchRequestBuilder searchRequestBuilder = client.prepareSearch("es_test1")
  43.                 .setTypes("article")
  44.                 .setQuery(QueryBuilders.matchAllQuery());
  45.  
  46.         //从0条开始，每页5条数据
  47.         //setFrom()：从第几条开始检索，默认是0。
  48.         //setSize():每页最多显示的记录数。
  49.         searchRequestBuilder.setFrom(0).setSize(5);
  50.         SearchResponse searchResponse=searchRequestBuilder.get();
  51.  
  52.         //获取命中次数，查询结果有多少对象
  53.         SearchHits hits = searchResponse.getHits();
  54.         System.out.println("查询结果有："+hits.getTotalHits()+"条");
  55.         //遍历搜索结果数据
  56.         Iterator<SearchHit> iterator = hits.iterator();
  57.         while (iterator.hasNext()){
  58.             //每个查询对象
  59.             SearchHit searchHit = iterator.next();
  60.             //获取字符串格式打印
  61.             System.out.println(searchHit.getSourceAsString());
  62.             System.out.println("id:"+searchHit.getSource().get("id"));
  63.             System.out.println("title:"+searchHit.getSource().get("title"));
  64.             System.out.println("content:"+searchHit.getSource().get("content"));
  65.             System.out.println("**************************************************");
  66.         }
  67.         //释放资源
  68.         client.close();
  69.     }
  70. }

4、控制台

　　

十二、查询结果高亮操作

　　在进行关键字搜索时，搜索出的内容中的关键字会显示不同的颜色，称之为高亮　
　　ElasticSearch可以对查询出的内容中关键字部分进行标签和样式的设置，但是你需要告诉ElasticSearch使用什么标签对高亮关键字进行包裹 

1、高亮代码

  1. package com.zn.myTest;
  2.  
  3. import com.fasterxml.jackson.core.JsonProcessingException;
  4. import com.fasterxml.jackson.databind.ObjectMapper;
  5. import com.zn.entity.Article;
  6. import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
  7. import org.elasticsearch.action.search.SearchRequestBuilder;
  8. import org.elasticsearch.action.search.SearchResponse;
  9. import org.elasticsearch.client.Requests;
  10. import org.elasticsearch.client.transport.TransportClient;
  11. import org.elasticsearch.common.settings.Settings;
  12. import org.elasticsearch.common.text.Text;
  13. import org.elasticsearch.common.transport.InetSocketTransportAddress;
  14. import org.elasticsearch.common.xcontent.XContentBuilder;
  15. import org.elasticsearch.common.xcontent.XContentFactory;
  16. import org.elasticsearch.common.xcontent.XContentType;
  17. import org.elasticsearch.index.query.QueryBuilders;
  18. import org.elasticsearch.search.SearchHit;
  19. import org.elasticsearch.search.SearchHits;
  20. import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
  21. import org.elasticsearch.transport.client.PreBuiltTransportClient;
  22. import org.junit.jupiter.api.Test;
  23.  
  24. import java.io.IOException;
  25. import java.net.InetAddress;
  26. import java.net.UnknownHostException;
  27. import java.util.Iterator;
  28. import java.util.concurrent.ExecutionException;
  29.  
  30. public class MyESTest {
  31.  
  32.     /**
  33.      * 查询结果高亮操作
  34.      */
  35.     @Test
  36.     public void selectDocumentRed() throws UnknownHostException {
  37.         //创建Client连接对象
  38.         Settings settings = Settings.builder().put("cluster.name", "my-application").build();
  39.         //设置IP地址和端口号
  40.         TransportClient client = new PreBuiltTransportClient(settings).addTransportAddress(
  41.                 new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));
  42.  
  43.         //设置搜索条件
  44.         SearchRequestBuilder searchRequestBuilder = client.prepareSearch("es_test1")
  45.                 .setTypes("article")
  46.                 .setQuery(QueryBuilders.termQuery("title","搜索"));
  47.  
  48.         //设置高亮数据
  49.         HighlightBuilder highlightBuilder=new HighlightBuilder();
  50.         highlightBuilder.preTags("<font style='color:red'>");
  51.         highlightBuilder.postTags("</font>");
  52.         highlightBuilder.field("title");
  53.         searchRequestBuilder.highlighter(highlightBuilder);
  54.  
  55.         //获取查询结果数据
  56.         SearchResponse searchResponse = searchRequestBuilder.get();
  57.  
  58.         //获取查询结果集
  59.         SearchHits hits = searchResponse.getHits();
  60.         System.out.println("共搜到："+hits.getTotalHits()+"条数据");
  61.         //遍历结果
  62.         for (SearchHit hit:hits){
  63.             System.out.println("String方式打印文档搜索内容:");
  64.             System.out.println(hit.getSourceAsString());
  65.             System.out.println("Map方式打印高亮内容");
  66.             System.out.println(hit.getHighlightFields());
  67.  
  68.             System.out.println("遍历高亮集合，打印高亮片段:");
  69.             Text[] text = hit.getHighlightFields().get("title").getFragments();
  70.             for (Text str:text){
  71.                 System.out.println(str);
  72.             }
  73.             System.out.println("**********************************************************8");
  74.             //释放资源
  75.             client.close();
  76.         }
  77.     }
  78. }

2、控制台

　　

　

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