java文件和文件夹复制、删除、移动操作

java文件和文件夹复制、删除、移动操作

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.InputStream;
import java.io.PrintWriter;

public  class  CopyFile  {
   public  CopyFile()  {
   }  

   /**
     *  新建目录
     *  @param  folderPath  String  如  c:/fqf
     *  @return  boolean
     */
   public  void  newFolder(String  folderPath)  {
       try  {
           String  filePath  =  folderPath;
           filePath  =  filePath.toString();
           java.io.File  myFilePath  =  new  java.io.File(filePath);
           if  (!myFilePath.exists())  {
               myFilePath.mkdir();
           }
       }
       catch  (Exception  e)  {
           System.out.println("新建目录操作出错");
           e.printStackTrace();
       }
   }  

   /**
     *  新建文件
     *  @param  filePathAndName  String  文件路径及名称  如c:/fqf.txt
     *  @param  fileContent  String  文件内容
     *  @return  boolean
     */
   public  void  newFile(String  filePathAndName,  String  fileContent)  {  

       try  {
           String  filePath  =  filePathAndName;
           filePath  =  filePath.toString();  //取的路径及文件名
           File  myFilePath  =  new  File(filePath);
           /**如果文件不存在就建一个新文件*/
           if  (!myFilePath.exists())  {
               myFilePath.createNewFile();
           }
           FileWriter  resultFile  =  new  FileWriter(myFilePath);  //用来写入字符文件的便捷类, 在给出 File 对象的情况下构造一个 FileWriter 对象
           PrintWriter  myFile  =  new  PrintWriter(resultFile);  //向文本输出流打印对象的格式化表示形式,使用指定文件创建不具有自动行刷新的新 PrintWriter。
           String  strContent  =  fileContent;
           myFile.println(strContent);
           resultFile.close();  

       }
       catch  (Exception  e)  {
           System.out.println("新建文件操作出错");
           e.printStackTrace();  

       }  

   }  

   /**
     *  删除文件
     *  @param  filePathAndName  String  文件路径及名称  如c:/fqf.txt
     *  @param  fileContent  String
     *  @return  boolean
     */
   public  void  delFile(String  filePathAndName)  {
       try  {
           String  filePath  =  filePathAndName;
           filePath  =  filePath.toString();
           java.io.File  myDelFile  =  new  java.io.File(filePath);
           myDelFile.delete();  

       }
       catch  (Exception  e)  {
           System.out.println("删除文件操作出错");
           e.printStackTrace();  

       }  

   }  

   /**
     *  删除文件夹
     *  @param  filePathAndName  String  文件夹路径及名称  如c:/fqf
     *  @param  fileContent  String
     *  @return  boolean
     */
   public  void  delFolder(String  folderPath)  {
       try  {
           delAllFile(folderPath);  //删除完里面所有内容
           String  filePath  =  folderPath;
           filePath  =  filePath.toString();
           java.io.File  myFilePath  =  new  java.io.File(filePath);
           myFilePath.delete();  //删除空文件夹  

       }
       catch  (Exception  e)  {
           System.out.println("删除文件夹操作出错");
           e.printStackTrace();  

       }  

   }  

   /**
     *  删除文件夹里面的所有文件
     *  @param  path  String  文件夹路径  如  c:/fqf
     */
   public  void  delAllFile(String  path)  {
       File  file  =  new  File(path);
       if  (!file.exists())  {
           return;
       }
       if  (!file.isDirectory())  {
           return;
       }
       String[]  tempList  =  file.list();
       File  temp  =  null;
       for  (int  i  =  0;  i  <  tempList.length;  i++)  {
           if  (path.endsWith(File.separator))  {
               temp  =  new  File(path  +  tempList[i]);
           }
           else  {
               temp  =  new  File(path  +  File.separator  +  tempList[i]);
           }
           if  (temp.isFile())  {
               temp.delete();
           }
           if  (temp.isDirectory())  {
               delAllFile(path+"/"+  tempList[i]);//先删除文件夹里面的文件
               delFolder(path+"/"+  tempList[i]);//再删除空文件夹
           }
       }
   }  

   /**
     *  复制单个文件
     *  @param  oldPath  String  原文件路径  如：c:/fqf.txt
     *  @param  newPath  String  复制后路径  如：f:/fqf.txt
     *  @return  boolean
     */
   public  void  copyFile(String  oldPath,  String  newPath)  {
       try  {
//           int  bytesum  =  0;
           int  byteread  =  0;
           File  oldfile  =  new  File(oldPath);
           if  (oldfile.exists())  {  //文件存在时
               InputStream  inStream  =  new  FileInputStream(oldPath);  //读入原文件
               FileOutputStream  fs  =  new  FileOutputStream(newPath);
               byte[]  buffer  =  new  byte[1444];
//               int  length;
               while  (  (byteread  =  inStream.read(buffer))  !=  -1)  {
//                   bytesum  +=  byteread;  //字节数  文件大小
//                   System.out.println(bytesum);
                   fs.write(buffer,  0,  byteread);
               }
               inStream.close();
           }
       }
       catch  (Exception  e)  {
           System.out.println("复制单个文件操作出错");
           e.printStackTrace();  

       }  

   }  

   /**
     *  复制整个文件夹内容
     *  @param  oldPath  String  原文件路径  如：c:/fqf
     *  @param  newPath  String  复制后路径  如：f:/fqf/ff
     *  @return  boolean
     */
   public  void  copyFolder(String  oldPath,  String  newPath)  {  

       try  {
           (new  File(newPath)).mkdirs();  //如果文件夹不存在  则建立新文件夹
           File  a=new  File(oldPath);
           String[]  file=a.list();
           File  temp=null;
           for  (int  i  =  0;  i  <  file.length;  i++)  {
               if(oldPath.endsWith(File.separator)){
                   temp=new  File(oldPath+file[i]);
               }
               else{
                   temp=new  File(oldPath+File.separator+file[i]);
               }  

               if(temp.isFile()){
                   FileInputStream  input  =  new  FileInputStream(temp);
                   FileOutputStream  output  =  new  FileOutputStream(newPath  +  "/"  +
                           (temp.getName()).toString());
                   byte[]  b  =  new  byte[1024  *  5];
                   int  len;
                   while  (  (len  =  input.read(b))  !=  -1)  {
                       output.write(b,  0,  len);
                   }
                   output.flush();
                   output.close();
                   input.close();
               }
               if(temp.isDirectory()){//如果是子文件夹
                   copyFolder(oldPath+"/"+file[i],newPath+"/"+file[i]);
               }
           }
       }
       catch  (Exception  e)  {
           System.out.println("复制整个文件夹内容操作出错");
           e.printStackTrace();  

       }  

   }  

   /**
     *  移动文件到指定目录
     *  @param  oldPath  String  如：c:/fqf.txt
     *  @param  newPath  String  如：d:/fqf.txt
     */
   public  void  moveFile(String  oldPath,  String  newPath)  {
       copyFile(oldPath,  newPath);
       delFile(oldPath);  

   }  

   /**
     *  移动文件到指定目录
     *  @param  oldPath  String  如：c:/fqf.txt
     *  @param  newPath  String  如：d:/fqf.txt
     */
   public  void  moveFolder(String  oldPath,  String  newPath)  {
       copyFolder(oldPath,  newPath);
       delFolder(oldPath);  

   }
   public static void main(String[] args){
    CopyFile file = new CopyFile();
//    file.newFolder("newFolder22222");
    file.delAllFile("E:/1");
   }
// 拷贝文件
   private void copyFile2(String source, String dest) {
   try {
   File in = new File(source);
   File out = new File(dest);
   FileInputStream inFile = new FileInputStream(in);
   FileOutputStream outFile = new FileOutputStream(out);
   byte[] buffer = new byte[10240];
   int i = 0;
   while ((i = inFile.read(buffer)) != -1) {
   outFile.write(buffer, 0, i);
   }//end while
   inFile.close();
   outFile.close();
   }//end try
   catch (Exception e) {

   }//end catch
   }//end copyFile

}