java文件工具类

来源：互联网发布：我的世界安装java 编辑：程序博客网时间：2024/05/01 11:59

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

/**
* Title: 
* Description: 
* Copyright: Copyright (c) 2002
* Company: 
* @author yinjin
* @version 1.0
*/
public class FileUtil {
public static void rmdirs(File path) {
 try {
 if (path.isFile()) {
 path.delete();
 return;
 }
 File[] subs = path.listFiles();
 if (subs.length == 0) {
 path.delete();
 }
 else {
 for (int i = 0; i < subs.length; i++) {
 rmdirs(subs[i]);
 }
 path.delete();
 }
 }
 catch (Exception ex) {
 }
}
public static void xcopy(File src,File destine)
{
 try {
 if (!src.exists() || src.getCanonicalPath().equals(destine.getCanonicalPath())) return;
 }
 catch (IOException ex) {
 }
 File[] chs = src.listFiles();
 for (int i=0;i<chs.length;i++)
 {
 if (chs[i].isFile())
 {
 File destineFile = new File(destine,chs[i].getName());
 copy (chs[i],destineFile);
 }
 else
 {
 File destineDir = new File(destine,chs[i].getName());
 destineDir.mkdirs();
 xcopy(chs[i],destineDir);
 }
 }
}

public static void copy(File src,File destine)
{
  try{
   if (!src.exists() || src.getCanonicalPath().equals(destine.getCanonicalPath())) return;
   FileInputStream fins = new FileInputStream(src);
   copy(fins,destine);
   destine.setLastModified(src.lastModified());
  }
  catch(Exception e)
  {}
}
public static void copy(InputStream fins, File destine){
  try {
   if (fins == null) return;
   destine.getParentFile().mkdirs();
   FileOutputStream fos = new FileOutputStream(destine);
   byte[] buf = new byte[1024];
   int readLen;
   while ((readLen = fins.read(buf,0,buf.length))>0)
   {
    fos.write(buf,0,readLen);
   }
   fos.flush();
   fos.close();
   fins.close();
  }
  catch (Exception ex) {
  }
}
public static void move(File src,File destine){
  try {
   if (!src.exists() || src.getCanonicalPath().equals(destine.getCanonicalPath())) return;
  }catch(IOException ex){}
  copy(src,destine);
  src.delete();
}
/**
* 重命名文件而不改变后缀
* @param fromFilename:要重命名的文件名
* @param toFilename:新的文件名,没有后缀
*/
public static String rename(String fromFilename,String toFilename)
{
  String filename = toFilename;
  int tail_index = fromFilename.lastIndexOf(".");
  if(tail_index != -1)
  {
      String tail = fromFilename.substring(tail_index);
      filename = toFilename+tail;
  }
  return filename;

}
/**
* 根据给定的路径创建目录
* @param dest
* @return 成功返回true,失败返回false
*/
public static boolean makeDir(String dest)
{
  boolean flag = true;
  try
  {
      File f = new File(dest);
   if(!f.mkdirs())
   {
    flag = false;
   }
  }
  catch(Exception e)
  {
   e.printStackTrace();
   flag = false;
  }
  return flag;
}
/**
* 测试方法
* @param args
*/
public static void main(String []args)
{
  String f = "U765P8T1D110044F913DT20040912232529";
  String e=FileUtil.rename(f,"修改");
  System.out.println("源文件名称："+f+"/n经过修改以后的文件名："+e);
  String path ="E://BJhouseApplicationsafasdf//bjhouseHomeasdf//configasdf";
  String lname = DateUtil.getTimeString();
  path += File.separator+lname;
  if(FileUtil.makeDir(path))
  {
   System.out.println("目录创建成功");
  }
  else
      System.out.println("目录创建失败");

}
}