随笔档案(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("函数开始处："+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("删除前:"+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("删除文件/文件夹"+fileName+"失败!");
                 }
             }
         }
         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) {//测试类
        
         File file =new File("H:/小说/小四/天亮说晚安");
         try{
             File.deleteDirs("H:/小说/小四/天亮说晚安");
             //File.deleteDirs(file);
             //File.deleteSubDirs("H:/小说/小四/天亮说晚安");
             //File.deleteSubDirs(file);
//File f=new File("F:/test.txt");
             //f.delete();
         }
         catch(Exception e){
             e.printStackTrace();
         }
         System.out.println("删除成功~");
     }    
}