开发搜索引擎初步（二）搜索（Lucene实现）

package com.dreamers.search;

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

import org.apache.lucene.document.Document;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;

public class IndexSearch {
private String INDEX_STORE_PATH = "d:\\LuceneDemo";//注意，此处的PATH为你的索引在磁盘中的存放位置
public void search(){
try{
Directory directory = FSDirectory.open(new File(INDEX_STORE_PATH));//建立库，导入索引
System.out.println("使用索引搜索");
IndexSearcher searcher = new IndexSearcher(directory);//初始化搜索的类，在Lucene中
Term t = new Term("publisher","历城二中");//构建搜索初始化元
Query q = new TermQuery(t);
Date begin = new Date();//建立时间，以便显示搜索用时
ScoreDoc[] hits = searcher.search(q,null,1000).scoreDocs;//将搜索到的资源放入数组
System.out.println("共找到 " + hits.length + " 个文档符合条件");
for (int i = 0; i < hits.length; i++){
Document doc = new Document();//遍历资源
doc = searcher.doc(hits[i].doc);
System.out.print("文件名为: ");
System.out.print(doc.get("title"));
System.out.print(".");
System.out.println(doc.get("kind"));
System.out.print("地址为 : ");
System.out.println(doc.get("url"));
System.out.print("描述: ");
System.out.println(doc.get("describe"));
System.out.print("scores is :");
System.out.println(hits[i].score);
System.out.print("作者为:");
System.out.println(doc.get("author"));
System.out.println("---------------------------------------------------");
}
Date end = new Date();
long time = end.getTime()-begin.getTime();
System.out.print("搜索用时 " + time + "ms");
}catch(IOException x){
x.printStackTrace();
}
}

public static void main(String [] args){
IndexSearch search = new IndexSearch();
search.search();//测试
}

}