隨筆檔案(496)

import java.util.*;

public class File extends java.io.File {
????

???? File(java.io.File file,String str){
???????? super(file,str);
???? }
???? File(String str1,String str2){
???????? super(str1,str2);
???? }
???? File(String str){
???????? super(str);
???? }
???? File(java.net.URI uri){
???????? super(uri);
???? }
???? public static void deleteDirs(java.io.File dir)throws Exception{
???????? m_root=dir;
???????? m_dirs= new ArrayList();
???????? if(!m_root.isDirectory()){
???????????? throw new Exception("Exception:\""+m_root.toString()+"\" is not a director");
???????? }
???????? else{
???????????? for(int i=0;i<m_dirs.size();i++){
???????????????? System.out.println(((File)m_dirs.get(i)).toString());
???????????? }
???????????? //delete all director
???????????? try{
???????????????? m_dirs.add(m_root);
???????????????? myDelete();
???????????? }
???????????? catch(Exception e){
???????????????? e.printStackTrace();
???????????? }???
???????? }???
???? }
???? /**
????? *
????? * @param dirPath?? String a director file path;
????? * @throws IOException if dirPath is not a director file path
????? */
???? public static void deleteDirs(String dirPath)throws Exception{
???????? m_root=new java.io.File(dirPath);
???????? deleteDirs(m_root);
???? }
????
???? public static void deleteSubDirs(String dirPath)throws Exception{
???????? m_root=new java.io.File(dirPath);
???????? deleteSubDirs(m_root);????
???? }
????
????
???? public static void deleteSubDirs(java.io.File dir)throws Exception{
???????? m_root=dir;
???????? m_dirs= new ArrayList();
???????? //deleteDirs(m_root);
???????? if(!m_root.isDirectory()){
???????????? throw new Exception("Exception:\""+m_root.toString()+"\" is not a director");
???????? }
????????
???????? else{
???????????? for(int i=0;i<m_dirs.size();i++){
???????????????? System.out.println(((File)m_dirs.get(i)).toString());
???????????? }
???????????? try{
???????????????? myDelete();
??????????? }
??????????? catch(Exception e){
??????????????????? e.printStackTrace();
??????????? }
??????????? }????
???? }
???? /*
????? *?? visit all a director and save them in a list
????? */
???? private static void visitAll(java.io.File tempRoot){
???????? //m_dirs.add(tempRoot);
???????? //System.out.println("函數開始處："+m_dirs.size());
????????
???????? java.io.File[] dirs=tempRoot.listFiles();
???????? if(dirs!=null){
????????
???????? List dirsList=Arrays.asList(dirs);
???????? //while(dirsList!=null){
???????????? if(dirsList==null){
???????????????? try{
???????????????????? tempRoot.delete();
???????????????? }
???????????????? catch(Exception e){
???????????????????? e.printStackTrace();
???????????????? }
}
???????????? else{
????????????????
???????????????? m_dirs.addAll(dirsList);????
???????????????? //System.out.println(m_dirs.size());
???????????????? /*
???????????????? for(int i=0;i<dirs.length;i++){//print dirs
???????????????????? System.out.println("NO."+ ++counter+":"+dirs[i].toString());
???????????????? }
???????????????? */
???????????????? //System.out.println(m_dirs.size());
????????????????
???????????????? for(int i=0;i<dirsList.size();i++){
???????????????????? tempRoot=(java.io.File)dirsList.get(i);
???????????????????? visitAll(tempRoot);
???????????????????? /*
???????????????????? dirs=tempRoot.listFiles();
???????????????????? List dirsList= Arrays.asList(dirs);
???????????????????? */
???????????????????? //System.out.println(tempRoot.toString());
???????????????? }???
???????????? }
???????????? //return true;
???????? //}
???????? }
???? }
???? /*
????? * do delete
????? */
???? private static void myDelete()throws Exception{
???????? //m_dirs.add(m_root);
???????? visitAll(m_root);
????????
???????? if(m_dirs!=null){
????????????
???????????? //System.out.println("刪除前:"+m_dirs.size());
???????????? //System.out.println(m_dirs.size());
???????????? for(int i=m_dirs.size()-1;i>=0;i--){
???????????????? java.io.File f= (java.io.File)m_dirs.remove(i);
???????????????? //File f= (File)m_dirs.get(i);
???????????????? //System.out.println(f.toString());
???????????????? String fileName=f.toString();
????????????????
???????????????? if(!f.delete()){
???????????????????? throw new Exception("Exception: delete file "+ fileName+" false!");
???????????????????? //System.out.println("刪除文件/文件夾"+fileName+"失敗!");
???????????????? }
???????????? }
???????? }
???????? else{
???????????? throw new Exception("Exception: read file list of "+m_root.toString()+"false!");
???????????? //System.out.println("ArrayList==null");
???????? }
???? }
???? /*
????? * root director
????? */
???? private static java.io.File m_root;
????
???? private static ArrayList m_dirs;
???? //private static int counter=0;

???? public static void main(String[] args) {//測試類
????????
???????? File file =new File("H:/小說/小四/天亮說晚安");
???????? try{
???????????? File.deleteDirs("H:/小說/小四/天亮說晚安");
???????????? //File.deleteDirs(file);
???????????? //File.deleteSubDirs("H:/小說/小四/天亮說晚安");
???????????? //File.deleteSubDirs(file);
//File f=new File("F:/test.txt");
???????????? //f.delete();
???????? }
???????? catch(Exception e){
???????????? e.printStackTrace();
???????? }
???????? System.out.println("刪除成功~");
???? }????
}