lucene利用BooleanQuery进行多个Query组合查询

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lucene3.0中BooleanQuery 实现与或的复合搜索 .
BooleanClause用于表示布尔查询子句关系的类，包括：BooleanClause.Occur.MUST，BooleanClause.Occur.MUST_NOT，BooleanClause.Occur.SHOULD。必须包含,不能包含,可以包含三种.有以下6种组合：
1．MUST和MUST：取得连个查询子句的交集。
2．MUST和MUST_NOT：表示查询结果中不能包含MUST_NOT所对应得查询子句的检索结果。
3．SHOULD与MUST_NOT：连用时，功能同MUST和MUST_NOT。
4．SHOULD与MUST连用时，结果为MUST子句的检索结果,但是SHOULD可影响排序。
5．SHOULD与SHOULD：表示“或”关系，最终检索结果为所有检索子句的并集。

6．MUST_NOT和MUST_NOT：无意义，检索无结果。

package com.jiepu.lucene_23;import java.io.File;import java.io.IOException;import org.apache.lucene.document.Document;import org.apache.lucene.index.IndexReader;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.ScoreDoc;import org.apache.lucene.search.TermQuery;import org.apache.lucene.search.TopDocs;import org.apache.lucene.search.WildcardQuery;import org.apache.lucene.store.Directory;import org.apache.lucene.store.FSDirectory;/** * lucene利用BooleanQuery进行多个Query组合查询 *  */public class LuceneWildCardSearcher {public static void main(String[] args) {String dir = "D:\\index";try {Directory directory = FSDirectory.getDirectory(new File(dir));@SuppressWarnings("deprecation")IndexReader reader = IndexReader.open(directory);IndexSearcher indexSearcher = new IndexSearcher(reader);Term term = new Term("content", "java*");WildcardQuery wildcardQuery = new WildcardQuery(term);Term term2 = new Term("datetime", "191111");TermQuery termQuery = new TermQuery(term2);BooleanQuery booleanQuery = new BooleanQuery();booleanQuery.add(wildcardQuery, Occur.MUST);booleanQuery.add(termQuery, Occur.MUST);TopDocs topDocs = indexSearcher.search(booleanQuery,null, 10);ScoreDoc scoreDocs[] = topDocs.scoreDocs;for (int i = 0; i < scoreDocs.length; i++) {Document document = indexSearcher.doc(scoreDocs[i].doc);System.out.println(document.get("id"));System.out.println(document.get("name"));System.out.println(document.get("text"));System.out.println(document.get("datetime"));}directory.close();} catch (IOException e) {e.printStackTrace();}}}

http://blog.csdn.net/kingzuo/article/details/12096369

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