用Java写得小程序，保存在这里吧···
import java.io.*;
public class changefilename
{
public static void main(String[] args)
{
System.out.println("->->->Main Begin...");
String path = new String("E:\\");
changepathname(path);
System.out.println("->->->Main End...");
}
public static void changepathname(String path)
{
System.out.println("->->->changepathname Begin...");
File d = new File(path);
//取得当前文件夹下所有文件和目录的列表
File lists[] = d.listFiles();
String pathss = new String("");
//对当前目录下面所有文件进行检索
for(int i = 0; i < lists.length; i ++)
{
if(lists[i].isFile())
{
String filename = lists[i].getName();
filename = upCase(filename);
String toName = new String(path + filename);
File tempf = new File(toName);
lists[i].renameTo(tempf);
System.out.println("new fullfilename is:" + toName);
}
else
{
pathss = path;
//进入下一级目录
pathss = pathss + lists[i].getName() + "\\";
//递归遍历所有目录
changepathname(pathss);
}
}
System.out.println("->->->changepathname End...");
}
public static String upCase(String filename)
{
System.out.println("->->->upCase Begin...");
String tempstr = new String("");
char tempch = ' ';
for(int i = 0; i < filename.length(); i ++)
{
tempch = filename.charAt(i);
if(64 < filename.charAt(i)&& filename.charAt(i) < 91)//是大写字母
tempch += 32;
tempstr += tempch;
}
System.out.println("new filename is:" + tempstr);
System.out.println("->->->upCase End...");
return tempstr;
}
}