java文件操作

//new/del/copy/move文件

import java.io.*;

public class newFolder {

   public newFolder() {

   }

  

   public static void main(String args[]){

//       newFolder("D:/100");

       copyFile("C:\\Users\\JiangWenwen\\Workspaces\\MyEclipse 8.5\\bif\\war\\upload_dri\\rpdinfo_file\\p17uue5veg1djm8n2ib10hkgd4.jpg", "C:\\Users\\JiangWenwen\\Workspaces\\MyEclipse 8.5\\bif\\war\\upload_dri\\2013-7-1144\\p17uue5veg1djm8n2ib10hkgd4.jpg");

//copyFile("D:/test.txt", "F:/test.txt");

   }

   /**

     * 新建目录

     * @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("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 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("新建目录操作出错");

           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 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("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 static 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 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 static 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 static 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 static 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 static void moveFolder(String oldPath, String newPath) {

       copyFolder(oldPath, newPath);

       delFolder(oldPath);

   }

}