基于apache Lucene的mp3搜索器 前些日子找机器上的一首老歌时,费了些周折,后想到既然这些mp3有自己的标签信息,为何不利用起来呢?笔者就尝试用Lucene实现,分两部分,Mp3Indexer.java是创建索引的,mp3search.jsp是搜索mp3的页面。 下面是Mp3Indexer.java的代码。 package mp3indexer; import java.io.*; import java.text.*; import java.util.*;
import org.apache.lucene.analysis.cjk.*; import org.apache.lucene.document.*; import org.apache.lucene.index.*;
public class Mp3Indexer { public final static String mp3Path="d:\\mp3";//mp3所在目录 public final static String indexPath="c:\\mp3Indexer";//索引存放目录 public static void main(String[] args) throws ClassNotFoundException, IOException{ try { IndexWriter writer = new IndexWriter(indexPath, new CJKAnalyzer(), true); indexMp3s(writer, new File(mp3Path));
System.out.println("优化中...."); writer.optimize(); writer.close();
} catch (Exception e) { System.out.println(e.getMessage()); } }
public static void indexMp3s(IndexWriter writer, File file) throws Exception { if (file.isDirectory()) { String[] files = file.list(); for (int i = 0; i < files.length; i++) { indexMp3s(writer, new File(file, files[i])); } } else if (file.getPath().endsWith(".mp3")) { //只对 MP3 文件做索引 System.out.print("正在处理文件:" + file + " ...."); // Add mp3 file .... Document doc = new Document(); doc.add(Field.Text("name", file.getName())); //索引文件名 doc.add(Field.UnIndexed("modified", DateFormat.getDateTimeInstance().format(new Date(file.lastModified())))); //索引最后修改时间 doc.add(Field.Text("size",""+NumberFormat.getNumberInstance().format(file.length()/1048576.0)+"MB")); //索引最后修改时间
FileReader fReader = new FileReader(file); java.io.RandomAccessFile r=new RandomAccessFile(file,"r"); r.seek(file.length()-128); byte[] bt=new byte[127]; r.read(bt); String labelInfo=new String(bt,"GB2312"); System.out.println(labelInfo);
if (labelInfo.startsWith("TAG")) { doc.add(Field.Text("comment", labelInfo)); } System.out.println("[处理完成]");
r.close(); fReader.close(); writer.addDocument(doc); } //end else if }
} //end class
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