java複製，剪下，刪除檔案操作

package OALogic.sql.data;

import java.io.*;

public class FileOperate {
   public FileOperate() {
   }
  
   public static void main(String args[]){
       newFolder("D:/100");

   }

   /**
     * 建立目錄
     * @param folderPath String 如 c:/fqf
     * @return boolean
     */
   public static 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("建立目錄操作出錯");
           e.printStackTrace();
       }
   }

   /**
     * 建立檔案
     * @param filePathAndName String 檔案路徑及名稱 如c:/fqf.txt
     * @param fileContent String 檔案內容
     * @return boolean
     */
   public static void newFile(String filePathAndName, String fileContent) {

       try {
           String filePath = filePathAndName;
           filePath = filePath.toString();
           File myFilePath = new File(filePath);
           if (!myFilePath.exists()) {
               myFilePath.createNewFile();
           }
           FileWriter resultFile = new FileWriter(myFilePath);
           PrintWriter myFile = new PrintWriter(resultFile);
           String strContent = fileContent;
           myFile.println(strContent);
           resultFile.close();

       }
       catch (Exception e) {
           System.out.println("建立目錄操作出錯");
           e.printStackTrace();

       }

   }

   /**
     * 刪除檔案
     * @param filePathAndName String 檔案路徑及名稱 如c:/fqf.txt
     * @param fileContent String
     * @return boolean
     */
   public static 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("刪除檔案操作出錯");
           e.printStackTrace();

       }

   }

   /**
     * 刪除檔案夾
     * @param filePathAndName String 檔案夾路徑及名稱 如c:/fqf
     * @param fileContent String
     * @return boolean
     */
   public static void delFolder(String folderPath) {
       try {
           delAllFile(folderPath); //刪除完裡面所有內容
           String filePath = folderPath;
           filePath = filePath.toString();
           java.io.File myFilePath = new java.io.File(filePath);
           myFilePath.delete(); //刪除空檔案夾

       }
       catch (Exception e) {
           System.out.println("刪除檔案夾操作出錯");
           e.printStackTrace();

       }

   }

   /**
     * 刪除檔案夾裡面的所有檔案
     * @param path String 檔案夾路徑 如 c:/fqf
     */
   public static 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]);//先刪除檔案夾裡面的檔案
               delFolder(path+"/"+ tempList[i]);//再刪除空檔案夾
           }
       }
   }

   /**
     * 複製單個檔案
     * @param oldPath String 原檔案路徑 如：c:/fqf.txt
     * @param newPath String 複製後路徑 如：f:/fqf.txt
     * @return boolean
     */
   public static void copyFile(String oldPath, String newPath) {
       try {
           int bytesum = 0;
           int byteread = 0;
           File oldfile = new File(oldPath);
           if (oldfile.exists()) { //檔案存在時
               InputStream inStream = new FileInputStream(oldPath); //讀入原檔案
               FileOutputStream fs = new FileOutputStream(newPath);
               byte[] buffer = new byte[1444];
               int length;
               while ( (byteread = inStream.read(buffer)) != -1) {
                   bytesum += byteread; //位元組數 檔案大小
                   System.out.println(bytesum);
                   fs.write(buffer, 0, byteread);
               }
               inStream.close();
           }
       }
       catch (Exception e) {
           System.out.println("複製單個檔案操作出錯");
           e.printStackTrace();

       }

   }

   /**
     * 複製整個檔案夾內容
     * @param oldPath String 原檔案路徑 如：c:/fqf
     * @param newPath String 複製後路徑 如：f:/fqf/ff
     * @return boolean
     */
   public static void copyFolder(String oldPath, String newPath) {

       try {
           (new File(newPath)).mkdirs(); //如果檔案夾不存在 則建立新檔案夾
           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()){//如果是子檔案夾
                   copyFolder(oldPath+"/"+file[i],newPath+"/"+file[i]);
               }
           }
       }
       catch (Exception e) {
           System.out.println("複製整個檔案夾內容操作出錯");
           e.printStackTrace();

       }

   }

   /**
     * 移動檔案到指定目錄
     * @param oldPath String 如：c:/fqf.txt
     * @param newPath String 如：d:/fqf.txt
     */
   public static void moveFile(String oldPath, String newPath) {
       copyFile(oldPath, newPath);
       delFile(oldPath);

   }

   /**
     * 移動檔案到指定目錄
     * @param oldPath String 如：c:/fqf.txt
     * @param newPath String 如：d:/fqf.txt
     */
   public static void moveFolder(String oldPath, String newPath) {
       copyFolder(oldPath, newPath);
       delFolder(oldPath);

   }
}

 

本文來自CSDN部落格，轉載請標明出處：http://blog.csdn.net/dsj188/archive/2009/06/29/4307225.aspx