基础环境

注意pom中的jar包版本，最好是和服务器上的elasticsearch版本一致，目前就测试来看，不一致貌似也没啥大的影响

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.elasticsearch</groupId><artifactId>elasticSearch</artifactId><version>0.0.1-SNAPSHOT</version><packaging>jar</packaging><name>elasticSearch</name><description>Demo project for elasticsearch</description><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.0.5.RELEASE</version><relativePath/> <!-- lookup parent from repository --></parent><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding><java.version>1.8</java.version><elsaticsearch.version>6.4.0</elsaticsearch.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>org.elasticsearch.client</groupId><artifactId>elasticsearch-rest-client</artifactId><version>${elsaticsearch.version}</version></dependency><dependency><groupId>org.elasticsearch.client</groupId><artifactId>transport</artifactId><version>${elsaticsearch.version}</version></dependency><dependency><groupId>org.elasticsearch.plugin</groupId><artifactId>transport-netty4-client</artifactId><version>${elsaticsearch.version}</version></dependency><dependency><groupId>org.elasticsearch</groupId><artifactId>elasticsearch</artifactId><version>${elsaticsearch.version}</version></dependency><dependency><groupId>org.elasticsearch.client</groupId><artifactId>elasticsearch-rest-high-level-client</artifactId><version>${elsaticsearch.version}</version><type>pom</type></dependency><dependency><groupId>commons-lang</groupId><artifactId>commons-lang</artifactId><version>2.6</version></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build>
</project>

HighLight.java

package com.gwd.elasticsearch.test;import java.net.InetAddress;
import java.net.UnknownHostException;import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.text.Text;
import org.elasticsearch.common.transport.TransportAddress;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.SearchHits;
import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
import org.elasticsearch.transport.client.PreBuiltTransportClient;/*** Description:* 作者：gu.weidong(Jack)* date:2018年9月18日* ProjectName:elasticSearch*/
public class HighLight {public static void main(String[] args) throws UnknownHostException {// TODO Auto-generated method stub// 设置集群名称Settings settings = Settings.builder().put("cluster.name", "elasticsearch").build();// 创建clientTransportClient client = new PreBuiltTransportClient(settings). addTransportAddress(new TransportAddress(InetAddress.getByName("XXX.XXX.XX.XX"), 9300));//本地的话，可以使用 localhost，9300是默认的 api 访问接口QueryBuilder matchQuery = QueryBuilders.matchQuery("title", "Elasticsearch");HighlightBuilder hiBuilder=new HighlightBuilder();hiBuilder.preTags("<h2>");hiBuilder.postTags("</h2>");hiBuilder.field("title");// 搜索数据SearchResponse response = client.prepareSearch("blog").setQuery(matchQuery).highlighter(hiBuilder).execute().actionGet();//获取查询结果集SearchHits searchHits = response.getHits();System.out.println("共搜到:"+searchHits.getTotalHits()+"条结果!");//遍历结果for(SearchHit hit:searchHits){System.out.println("String方式打印文档搜索内容:");System.out.println(hit.getSourceAsString());System.out.println("Map方式打印高亮内容");System.out.println(hit.getHighlightFields());System.out.println("遍历高亮集合，打印高亮片段:");Text[] text = hit.getHighlightFields().get("title").getFragments();for (Text str : text) {System.out.println(str.string());}}}
}

注意

在pom.xml配置文件中务必加入

dependency><groupId>org.elasticsearch.plugin</groupId><artifactId>transport-netty4-client</artifactId><version>6.4.0</version>
</dependency>

否则会报如下错误：

Exception in thread "main" java.lang.NoClassDefFoundError: org/elasticsearch/common/transport/InetSocketTransportAddressat org.elasticsearch.transport.Netty4Plugin.getSettings(Netty4Plugin.java:55)at org.elasticsearch.plugins.PluginsService.lambda$getPluginSettings$0(PluginsService.java:87)at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:267)at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1380)at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)at org.elasticsearch.plugins.PluginsService.getPluginSettings(PluginsService.java:87)at org.elasticsearch.client.transport.TransportClient.buildTemplate(TransportClient.java:145)at org.elasticsearch.client.transport.TransportClient.<init>(TransportClient.java:283)at org.elasticsearch.transport.client.PreBuiltTransportClient.<init>(PreBuiltTransportClient.java:128)at org.elasticsearch.transport.client.PreBuiltTransportClient.<init>(PreBuiltTransportClient.java:114)at org.elasticsearch.transport.client.PreBuiltTransportClient.<init>(PreBuiltTransportClient.java:104)at com.gwd.elasticsearch.test.HighLight.main(HighLight.java:31)
Caused by: java.lang.ClassNotFoundException: org.elasticsearch.common.transport.InetSocketTransportAddressat java.net.URLClassLoader.findClass(URLClassLoader.java:381)at java.lang.ClassLoader.loadClass(ClassLoader.java:424)at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)at java.lang.ClassLoader.loadClass(ClassLoader.java:357)... 16 more

查询结果

共搜到:2条结果!
String方式打印文档搜索内容:{"title": "New version of Elasticsearch released!","content": "Version 1.0 released today!","priority": 10,"tags": ["announce", "elasticsearch", "release"]
}
Map方式打印高亮内容
{title=[title], fragments[[New version of <h2>Elasticsearch</h2> released!]]}
遍历高亮集合，打印高亮片段:
New version of <h2>Elasticsearch</h2> released!
String方式打印文档搜索内容:{"id": "1","title": "New version of Elasticsearch released!","content": "Version 1.0 released today!","priority": 10,"tags": ["announce", "elasticsearch", "release"]
}
Map方式打印高亮内容
{title=[title], fragments[[New version of <h2>Elasticsearch</h2> released!]]}
遍历高亮集合，打印高亮片段:
New version of <h2>Elasticsearch</h2> released!

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ElasticSearch教程——Java进行高亮显示

基础环境

pom.xml

HighLight.java

注意

查询结果

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