Java 删除文件和目录代码

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 Java 删除文件和目录代码

package book.io; import java.io.File; /** * * @author XWZ * 2007-11-27 * 删除文件或目录 */ public class DeleteFileUtil { /** * 删除文件，可以是单个文件或文件夹 * @param fileName 待删除的文件名 * @return 文件删除成功返回true,否则返回false */ public static boolean delete(String fileName){ File file = new File(fileName); if(!file.exists()){ System.out.println("删除文件失败："+fileName+"文件不存在"); return false; }else{ if(file.isFile()){ return deleteFile(fileName); }else{ return deleteDirectory(fileName); } } } /** * 删除单个文件 * @param fileName 被删除文件的文件名 * @return 单个文件删除成功返回true,否则返回false */ public static boolean deleteFile(String fileName){ File file = new File(fileName); if(file.isFile() && file.exists()){ file.delete(); System.out.println("删除单个文件"+fileName+"成功！"); return true; }else{ System.out.println("删除单个文件"+fileName+"失败！"); return false; } } /** * 删除目录（文件夹）以及目录下的文件 * @param dir 被删除目录的文件路径 * @return 目录删除成功返回true,否则返回false */ public static boolean deleteDirectory(String dir){ //如果dir不以文件分隔符结尾，自动添加文件分隔符 if(!dir.endsWith(File.separator)){ dir = dir+File.separator; } File dirFile = new File(dir); //如果dir对应的文件不存在，或者不是一个目录，则退出 if(!dirFile.exists() || !dirFile.isDirectory()){ System.out.println("删除目录失败"+dir+"目录不存在！"); return false; } boolean flag = true; //删除文件夹下的所有文件(包括子目录) File[] files = dirFile.listFiles(); for(int i=0;i<files.length;i++){ //删除子文件 if(files[i].isFile()){ flag = deleteFile(files[i].getAbsolutePath()); if(!flag){ break; } } //删除子目录 else{ flag = deleteDirectory(files[i].getAbsolutePath()); if(!flag){ break; } } } if(!flag){ System.out.println("删除目录失败"); return false; } //删除当前目录 if(dirFile.delete()){ System.out.println("删除目录"+dir+"成功！"); return true; }else{ System.out.println("删除目录"+dir+"失败！"); return false; } } public static void main(String[] args) { //String fileName = "g:/temp/xwz.txt"; //DeleteFileUtil.deleteFile(fileName); String fileDir = "G:/temp/temp0/temp1"; //DeleteFileUtil.deleteDirectory(fileDir); DeleteFileUtil.delete(fileDir); } }

 

本代码亟待验证中。转自【http://www.qqread.com/java/2008/08/w425698.html】

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