lucene一个field多个条件查询

灰太狼 2022-07-12 11:30 144阅读 0赞

lucene模拟sql where in 查询demo

import java.io.File;
    import java.io.IOException;
    import java.util.ArrayList;
    
    import org.apache.lucene.document.Document;
    import org.apache.lucene.index.DirectoryReader;
    import org.apache.lucene.index.Term;
    import org.apache.lucene.search.BooleanClause;
    import org.apache.lucene.search.BooleanQuery;
    import org.apache.lucene.search.IndexSearcher;
    import org.apache.lucene.search.MultiPhraseQuery;
    import org.apache.lucene.search.ScoreDoc;
    import org.apache.lucene.search.TopDocs;
    import org.apache.lucene.store.Directory;
    import org.apache.lucene.store.FSDirectory;
    import org.junit.Test;
    
    public class IluceneTest {
        @Test
        public void test(){
         DirectoryReader reader = null;
         try{
    //         1、创建Directory
              Directory directory = FSDirectory.open(new File("/home/ilucene"));//在硬盘上生成Directory
    //         2、创建IndexReader
              reader = DirectoryReader.open(directory);
    //         3、根据IndexWriter创建IndexSearcher
              IndexSearcher searcher =  new IndexSearcher(reader);
              String[] keys = new String[]{
       "211058","254"}; 
              //同时声明一个与之对应的字段数组  
              BooleanQuery rootQuery = new BooleanQuery(); 
              MultiPhraseQuery query = new MultiPhraseQuery(); 
              ArrayList<Term> terms = new ArrayList<Term>(); 
              for(String key:keys){   
                  terms.add(new Term("cataId",key));
              }
              query.add((Term[])terms.toArray(new Term[terms.size()])); 
              rootQuery.add(query,BooleanClause.Occur.SHOULD); 
              TopDocs tds = searcher.search(rootQuery, 100);//查询10条记录
              ScoreDoc[] sds = tds.scoreDocs; 
              for(ScoreDoc sd:sds){
                  Document d = searcher.doc(sd.doc);
                  System.out.println(d.get("id"));
              }
    
    
         }catch(Exception e){
             e.printStackTrace();
         }finally{
             //9、关闭reader
             try {
                 reader.close();
             } catch (IOException e) {
                 e.printStackTrace();
             }
         }
        }
    }