使用lucene3.6创建索引和实现简单搜索

使用lucene3.6的一个小例子，实现了索引的创建和简单的搜索。

代码如下：

package com.java.search;

import java.io.File;
import java.io.IOException;
import java.util.Date;

import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.Field.Index;
import org.apache.lucene.document.Field.Store;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.util.Version;

public class Searcher {
	public void test() throws IOException {
		File file = new File("f://youyajie");
		FSDirectory directory = FSDirectory.open(file);
		//用来创建索引
		IndexWriterConfig conf = new IndexWriterConfig(Version.LUCENE_36,
				new StandardAnalyzer(Version.LUCENE_36));
		IndexWriter writer = new IndexWriter(directory, conf);
	    
		Document doc1 = new Document();
		Document doc2 = new Document();
		Document doc3 = new Document();
		Document doc4 = new Document();
		Document doc5 = new Document();
		Document doc6 = new Document();
		Document doc7 = new Document();
		Document doc8 = new Document();
		
		Field f1 = new Field("bookname", "钢铁是怎样炼成的", Store.YES, Index.ANALYZED);
		Field f2 = new Field("bookname", "英雄儿女", Store.YES, Index.ANALYZED);
		Field f3 = new Field("bookname", "篱笆女人和狗", Store.YES, Index.ANALYZED);
		Field f4 = new Field("bookname", "格林童话", Store.YES, Index.ANALYZED);
		Field f5 = new Field("bookname", "钢和铁是两种金属", Store.YES, Index.ANALYZED);
		Field f6 = new Field("bookname", "白毛女", Store.YES, Index.ANALYZED);
		Field f7 = new Field("bookname", "钢的世界", Store.YES, Index.ANALYZED);
		Field f8 = new Field("bookname", "钢铁战士", Store.YES, Index.ANALYZED);
		
		doc1.add(f1);
		doc2.add(f2);
		doc3.add(f3);
		doc4.add(f4);
		doc5.add(f5);
		doc6.add(f6);
		doc7.add(f7);
		doc8.add(f8);
		
		writer.addDocument(doc1);
		writer.addDocument(doc2);
		writer.addDocument(doc3);
		writer.addDocument(doc4);
		writer.addDocument(doc5);
		writer.addDocument(doc6);
		writer.addDocument(doc7);
		writer.addDocument(doc8);
		
		writer.close();//一定要关闭writer，这样索引才能写到磁盘上
		
		IndexReader reader = IndexReader.open(directory);
		//简单索引
		IndexSearcher searcher = new IndexSearcher(reader);
		Term t = new Term("bookname", "钢");
	    TermQuery quenry = new TermQuery(t);
	    //获得得分靠前的两个匹配记录
	    ScoreDoc[] docs = searcher.search(quenry, 2).scoreDocs;
	    for(int i = 0; i < docs.length; i++) {
	    	Date start = new Date();
	    	String bookname = searcher.doc(docs[i].doc).get("bookname");
	    	Date end = new Date();
	    	System.out.println(bookname + (end.getTime() - start.getTime()) + "ms");
	    }
		
		}
	
	public static void main(String[] args) throws IOException {
		Searcher Test = new Searcher();
		Test.test();
	}


}

索引创建成功。

运行结果为：

钢的世界2ms
钢铁战士1ms

作者：youyajie 发表于2012-4-22 21:04:05 原文链接

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