java实现酷狗音乐临时缓存文件转换为MP3文件的方法

package com.zhou.run;
import java.io.File;
import java.util.HashMap;
import java.util.Map;
public class KugouTempFileToMp3AndModifyNameToTrueName {
  public static String KGTEMP = ".kgtemp";
  public static String KRC = "krc";
  public void Change(String tempPath, String krcPath) {
    File temp = new File(tempPath);
    File krc = new File(krcPath);
    if (temp.exists() && temp.getName().endsWith(KGTEMP)) {
      String filename = temp.getName();
      String filemd5 = filename
          .substring(0, filename.lastIndexOf(KGTEMP));
      if (!krc.exists())
        return;
      String krcname = krc.getName();
      String krcmd5 = krcname.substring(krcname.lastIndexOf("-") + 1,
          krcname.lastIndexOf(KRC) - 1);
      String mp3name = krcname.substring(0, krcname.lastIndexOf("-"));
      if (krcmd5.equals(filemd5)) {
        String path = temp.getPath().substring(0,
            temp.getPath().lastIndexOf("\\"));
        File mp3File = new File(path + "\\" + mp3name + ".mp3");
        temp.renameTo(mp3File);
      }
      System.out.println(filename + " " + filemd5);
      System.out.println(krcname + " " + mp3name + " " + krcmd5);
    }
  }
  public void ChangeByDir(String tempPath,String krcPath){
    Map<String,File> temps = fileMd5Map(tempPath);
    Map<String,String> mp3Names = krcNameMd5Map(krcPath);
    for(String key :temps.keySet()){
      File f = temps.get(key);
      if(f.exists()){
        String path = f.getPath().substring(0,
            f.getPath().lastIndexOf("\\"));
        String mp3Name = mp3Names.get(key);
        File mp3File = new File(path + "\\" + mp3Name + ".mp3");
        if(f.renameTo(mp3File)){
          System.out.println(f.getName()+" to "+mp3File.getName());
          System.err.print("  SUCCESS");
        }
      }
    }
  }
  public Map<String, File> fileMd5Map(String path) {
    File dirFile = new File(path);
    Map<String, File> map = null;
    if (dirFile.isDirectory()) {
      map = new HashMap<String, File>();
      for (File f : dirFile.listFiles()) {
        if (f.exists()&&f.isFile()&& f.getName().endsWith(KGTEMP)) {
          String filename = f.getName();
          String filemd5 = filename.substring(0,
              filename.lastIndexOf(KGTEMP));
          map.put(filemd5, f);
        }
      }
    }
    return map;
  }
  public Map<String,String> krcNameMd5Map(String path){
    File dirFile = new File(path);
    Map<String, String> map = null;
    if (dirFile.isDirectory()) {
      map = new HashMap<String, String>();
      for (File f : dirFile.listFiles()) {
        if (f.exists()&&f.isFile()&& f.getName().endsWith(KRC)) {
          String krcname = f.getName();
          if(!krcname.contains("-"))continue;
          String krcmd5 = krcname.substring(krcname.lastIndexOf("-") + 1,
              krcname.lastIndexOf(KRC) - 1);
          String mp3name = krcname.substring(0, krcname.lastIndexOf("-"));
          map.put(krcmd5, mp3name);
        }
      }
    }
    return map;
  }
}
public static void main(String[] args) {
    KugouTempFileToMp3AndModifyNameToTrueName ktf = new KugouTempFileToMp3AndModifyNameToTrueName();
    /*String tempPath = "D:/KuGou/mp3/2fad259e357078e89404be12e1fd7ae3.kgtemp";
    String krcPath ="D:/KuGou/Lyric/周杰伦、袁咏琳 - 怎么了-2fad259e357078e89404be12e1fd7ae3.krc";
    ktf.Change(tempPath,krcPath);*/
    String tempDir ="D:/KuGou/mp3";
    String krcDir="D:/KuGou/Lyric";
    ktf.ChangeByDir(tempDir, krcDir);
}