import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.channels.FileChannel;
import java.util.ArrayList;
import java.util.List;/*** 文件拷贝* @author lixiaolong*/
public class FileTransfer {/*** 使用通道的方式进行整个目录/子目录/文件的拷贝* @throws IOException*/public void useChannel() throws IOException {String driver = "F:\\AgileController";String path = "/tomcat/webapps/OPMUI/customize";File input = new File(driver + path);String bakpath = "\\syncbak";File bakFile = new File(driver + bakpath);if(bakFile.exists()){deleteFile(bakFile);}bakFile.mkdirs();File output = new File(driver + bakpath + path);if(input.isDirectory()) {output.mkdirs();List<File> allFileList = new ArrayList<File>();getAllFiles(input, allFileList);for(File f : allFileList) {String outputPath = f.getCanonicalPath();if(outputPath.startsWith(driver)){outputPath = driver + bakpath + outputPath.substring(driver.length(), outputPath.length());}output = new File(outputPath);if(f.isDirectory()){output.mkdirs();} else {fileCopy(f, output);}}} else {fileCopy(input, output);}}/*** 递归列出所有子目录/文件* @param directory* @param allFileList*/private void getAllFiles(File directory, List<File> allFileList) {File flist[] = directory.listFiles();if (flist == null || flist.length == 0) {return;}for (File f : flist) {if (f.isDirectory()) {//列出所有子文件夹
                allFileList.add(f);getAllFiles(f, allFileList);} else {//列出所有文件
                allFileList.add(f);}}}/*** 使用通道的方式对单个文件进行拷贝* @param input* @param output* @throws IOException*/private void fileCopy(File input, File output) throws IOException {if(!input.exists()) {return;}if(!output.exists()) {output.createNewFile();}FileInputStream fis = new FileInputStream(input);FileOutputStream fos = new FileOutputStream(output);FileChannel inputChannel = null;FileChannel outputChannel = null;try {inputChannel = fis.getChannel();outputChannel = fos.getChannel();outputChannel.transferFrom(inputChannel, 0, inputChannel.size());} finally {inputChannel.close();outputChannel.close();fis.close();fos.close();}}/*** 级联删除文件* @param file*/private void deleteFile(File file){if (file.isDirectory()){File[] files = file.listFiles();for (File f : files){f.delete();}}file.delete();}public static void main(String[] args) {FileTransfer ft = new FileTransfer();try {ft.useChannel();} catch (IOException e) {System.out.println(e);}System.out.println("end");}}