package com.iwindyforest.dir;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.util.ArrayList;public class FileSystem{ private ArrayList fileList = new ArrayList(); public FileSystem(String path) { long a = System.currentTimeMillis(); this.listFiles(path); this.print("TimeCost:" + (System.currentTimeMillis() - a) + " Millis"); this.xCopy(path, "C: //temp"); } private void print(String message) { System.out.println(message); } public void listFiles(String strPath) { File dir = new File(strPath); if(dir != null && dir.exists()) { if(dir.isDirecTory()) { File[] files; try { files = dir.listFiles(); } catch(SecurityException e) { files = null; e.printStackTrace(); } if(files == null) { return; } else { for(int i = 0; i < files.length; i++) { String strFileName = files[i].getAbsolutePath(); if(files[i].isDirecTory()) { this.print("D--:" + strFileName); this.listFiles(files[i].getAbsolutePath()); } else { this.print("F--:" + strFileName); fileList.add(files[i].getAbsolutePath()); } } } } else { this.print("F--:" + dir.getAbsolutePath()); } } else { this.print("FileNotExist:" + dir.getAbsolutePath()); } } private boolean checkDir(File dir) { if(dir == null) { this.print("dirPath is null"); return false; } else if(!dir.exists()) { this.print("dirPath: " + dir.getAbsolutePath() + " doesn't exist."); return false; } else if(!dir.isDirecTory()) { this.print("dirPath: " + dir.getAbsolutePath() + " is not a direcTory."); return false; } else { return true; } } /** * 类似与windows操作系统的xCopy，递归拷贝整个源目录到目标目录。源目录和目标目录必须已经存在。 * * @param srcDirPath * @param destDirPath */ public void xCopy(String srcDirPath, String destDirPath) { File srcDir = new File(srcDirPath); File destDir = new File(destDirPath); if(this.checkDir(srcDir) && this.checkDir(destDir)) { File[] files; try { files = srcDir.listFiles(); } catch(SecurityException e) { files = null; this.print("xCopy breaked: can't listFiles,may be caused by:"); e.printStackTrace(); return; } if(files == null) { return; } else { for(int i = 0; i < files.length; i++) { String fileName = files[i].getName(); String absoluteFileName = files[i].getAbsolutePath(); if(files[i].isDirecTory()) { // 下一次递归的源目录 String subSrcDir = srcDir.getPath() + File.separaTor + fileName; // 下一次递归的目的目录 String subDestDir = destDir.getPath() + File.separaTor + fileName; try { new File(subDestDir).mkdir(); } catch(SecurityException e) { this.print("can't mkdir in path : " + subDestDir); this.print("xCopy breaked cause by: "); e.printStackTrace(); return; } xCopy(subSrcDir, subDestDir); } else { String destFileName = destDirPath + File.separaTor + fileName; copyFile(absoluteFileName, destFileName); } } } } } /** * 简单复制单个文件到目标路径。目标路径下的该文件必须有可写权限 * * @param srcFilePath * @param desFilePath */ public void copyFile(String srcFilePath, String desFilePath) { int byteread = 0; InputStream in = null; FileOutputStream ut = null; try { in = new FileInputStream(srcFilePath); ut = new FileOutputStream(desFilePath); } catch(FileNotFoundException e) { e.printStackTrace(); } byte[] buffer = new byte[1024]; try { while((byteread = in.read(buffer)) != -1) { out.write(buffer, 0, byteread); } in.close(); out.close(); } catch(IOException e) { e.printStackTrace(); } } public static void main(String[] args) { if(args.length == 1) { new FileSystem(args[0]); } else { new FileSystem(System.getProperty("user.dir", "c://")); } }}
回避现实的人，未来将更不理想。
