lucene入门-搜索方式

1

 package com.home.utils;

 import java.util.ArrayList;
 import java.util.List;

 import org.apache.lucene.document.Document;
 import org.apache.lucene.index.Term;
 import org.apache.lucene.search.BooleanClause.Occur;
 import org.apache.lucene.search.BooleanQuery;
 import org.apache.lucene.search.IndexSearcher;
 import org.apache.lucene.search.MatchAllDocsQuery;
 import org.apache.lucene.search.NumericRangeQuery;
 import org.apache.lucene.search.PhraseQuery;
 import org.apache.lucene.search.Query;
 import org.apache.lucene.search.ScoreDoc;
 import org.apache.lucene.search.TermQuery;
 import org.apache.lucene.search.TopDocs;
 import org.apache.lucene.search.WildcardQuery;
 import org.junit.Test;

 /**
  * 1、关键词查询 2、查询所有文档 3、范围查询 4、通配符查询 5、短语查询 6、Boolean查询
  *
  * @author Administrator
  *
  */
 public class QueryTest {

     private void showData(Query query) throws Exception {
         IndexSearcher indexSearcher = new IndexSearcher(LuceneUtils.directory);
         TopDocs topDocs = indexSearcher.search(query, 25);
         ScoreDoc[] scoreDocs = topDocs.scoreDocs;
         List<Article> articleList = new ArrayList<Article>();
         for (ScoreDoc scoreDoc : scoreDocs) {
             Document document = indexSearcher.doc(scoreDoc.doc);
             Article article = DocumentUtils.document2Article(document);
             articleList.add(article);
         }

         for (Article article : articleList) {
             System.out.println(article.getId());
             System.out.println(article.getTitle());
             System.out.println(article.getContent());
         }
     }

     /**
      * 关键词查询 因为没有分词器，所以区分大小写
      */
     @Test
     public void testTermQuery() throws Exception {
         Term term = new Term("title", "lucene");
         Query query = new TermQuery(term);
         this.showData(query);
     }

     /**
      * 查询所有的文档
      */
     @Test
     public void testAllDocQuery() throws Exception {
         Query query = new MatchAllDocsQuery();
         this.showData(query);
     }

     /**
      * 通配符查询 * 代表任意多个任意字符 ? 任意一个任意字符
      */
     @Test
     public void testWildCartQuery() throws Exception {
         Term term = new Term("title", "*.java");
         Query query = new WildcardQuery(term);
         this.showData(query);
     }

     /**
      * 短语查询 所有的关键词对象必须针对同一个属性
      *
      * @param query
      * @throws Exception
      */
     @Test
     public void testPharseQuery() throws Exception {
         Term term = new Term("title", "lucene");
         Term term2 = new Term("title", "搜索");
         PhraseQuery query = new PhraseQuery();
         query.add(term);
         query.add(term2, 4);
         this.showData(query);

     }

     /**
      * boolean查询 各种关键词的组合
      *
      * @param query
      * @throws Exception
      */
     @Test
     public void testBooleanQuery() throws Exception {
         Term term = new Term("title", "北京");
         TermQuery termQuery = new TermQuery(term);
         Term term2 = new Term("title", "美女");
         TermQuery termQuery2 = new TermQuery(term2);
         Term term3 = new Term("title", "北京美女");
         TermQuery termQuery3 = new TermQuery(term3);

         BooleanQuery booleanQuery = new BooleanQuery();
         booleanQuery.add(termQuery, Occur.SHOULD);
         booleanQuery.add(termQuery2, Occur.SHOULD);
         booleanQuery.add(termQuery3, Occur.SHOULD);
         this.showData(booleanQuery);
     }

      /**
       * 范围查询
       * @param query
       * @throws Exception
       */
      @Test
      public void testRangeQuery() throws Exception{
       Query query = NumericRangeQuery.newLongRange("id", 5L, 10L, true, true);
       this.showData(query);
      }

 }

原文地址：https://www.cnblogs.com/sharpest/p/5992564.html