七、SOLRJ 高亮显示
SolrUtil
增加queryHighlight 方法
public static void queryHighlight(String keywords) throws SolrServerException, IOException {
SolrQuery q = new SolrQuery();
//开始页数
q.setStart(0);
//每页显示条数
q.setRows(10);
// 设置查询关键字
q.setQuery(keywords);
// 开启高亮
q.setHighlight(true);
// 高亮字段
q.addHighlightField("name");
// 高亮单词的前缀
q.setHighlightSimplePre("<span style='color:red'>");
// 高亮单词的后缀
q.setHighlightSimplePost("</span>");
//摘要最长100个字符
q.setHighlightFragsize(100);
//查询
QueryResponse query = client.query(q);
//获取高亮字段name相应结果
NamedList<Object> response = query.getResponse();
NamedList<?> highlighting = (NamedList<?>) response.get("highlighting");
for (int i = 0; i < highlighting.size(); i++) {
System.out.println(highlighting.getName(i) + "：" + highlighting.getVal(i));
}
//获取查询结果
SolrDocumentList results = query.getResults();
for (SolrDocument result : results) {
System.out.println(result.toString());
}
}
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package how2java;import java.io.IOException;import java.util.List;import org.apache.solr.client.solrj.SolrClient;import org.apache.solr.client.solrj.SolrQuery;import org.apache.solr.client.solrj.SolrServerException;import org.apache.solr.client.solrj.beans.DocumentObjectBinder;import org.apache.solr.client.solrj.impl.HttpSolrClient;import org.apache.solr.client.solrj.response.QueryResponse;import org.apache.solr.common.SolrDocument;import org.apache.solr.common.SolrDocumentList;import org.apache.solr.common.SolrInputDocument;import org.apache.solr.common.util.NamedList;public class SolrUtil { public static SolrClient client; private static String url; static { url = "http://localhost:8983/solr/how2java"; client = new HttpSolrClient.Builder(url).build(); } public static void queryHighlight(String keywords) throws SolrServerException, IOException { SolrQuery q = new SolrQuery(); //开始页数 q.setStart(0); //每页显示条数 q.setRows(10); // 设置查询关键字 q.setQuery(keywords); // 开启高亮 q.setHighlight(true); // 高亮字段 q.addHighlightField("name"); // 高亮单词的前缀 q.setHighlightSimplePre("<span style='color:red'>"); // 高亮单词的后缀 q.setHighlightSimplePost("</span>"); //摘要最长100个字符 q.setHighlightFragsize(100); //查询 QueryResponse query = client.query(q); //获取高亮字段name相应结果 NamedList<Object> response = query.getResponse(); NamedList<?> highlighting = (NamedList<?>) response.get("highlighting"); for (int i = 0; i < highlighting.size(); i++) { System.out.println(highlighting.getName(i) + "：" + highlighting.getVal(i)); } //获取查询结果 SolrDocumentList results = query.getResults(); for (SolrDocument result : results) { System.out.println(result.toString()); } } public static <T> boolean batchSaveOrUpdate(List<T> entities) throws SolrServerException, IOException { DocumentObjectBinder binder = new DocumentObjectBinder(); int total = entities.size(); int count=0; for (T t : entities) { SolrInputDocument doc = binder.toSolrInputDocument(t); client.add(doc); System.out.printf("添加数据到索引中，总共要添加 %d 条记录，当前添加第%d条 %n",total,++count); } client.commit(); return true; } public static QueryResponse query(String keywords,int startOfPage, int numberOfPage) throws SolrServerException, IOException { SolrQuery query = new SolrQuery(); query.setStart(startOfPage); query.setRows(numberOfPage); query.setQuery(keywords); QueryResponse rsp = client.query(query); return rsp; }} |
步骤 4 :
TestSolr4j
调用queryHighlight 方法
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package how2java;import java.io.IOException;import org.apache.solr.client.solrj.SolrServerException;public class TestSolr4j { public static void main(String[] args) throws SolrServerException, IOException { //高亮查询查询 SolrUtil.queryHighlight("name:手机"); }} |
运行TestSolr4j 看到如图所示的效果，手机 这个关键字被高亮出来了
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