package com.firewolf.test;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
public class FileReaderUtil {
public static void main(String[] args){
try {
//mergeFile(new File("C:/Documents and Settings/liuxing0/桌面/新建文件夹/script"), new File("D:/all.sql"));
copyFiles(new File("G:/学习资料/笔记"),new File("G:/Test"));
} catch (IOException e) {
e.printStackTrace();
}
}

/**

• 拷贝某个文件目录下面的所有文件，
• @param sourcePath 原文件目录

• @param desPath 目的文件目录
  */
  private static void copyFiles(File sourceFile,File desFile) throws IOException{
  if(sourceFile.isFile()){
  File file = new File(desFile.getPath()+"/"+sourceFile.getName());
  FileInputStream fis = new FileInputStream(sourceFile);
  FileOutputStream fos = new FileOutputStream(file);
  int len = 0;
  byte[] buf = new byte[1024];
  while((len = fis.read(buf)) != -1)
  fos.write(buf,0,len);
  }else{
  File dir = new File(desFile.getPath()+"/"+sourceFile.getName());
  if(!dir.exists())
  dir.mkdir();
  String[] names = sourceFile.list();
  for (int i = 0; i < names.length; i++) {
  copyFiles(new File(sourceFile.getPath()+"/"+names[i]),dir);
  }
  }
  }

  /**

• 将一个文件目录下面的所有文件独到一个文件中的方法（主要用于将很多文本文件合并到一起）
• @param sourceFile
• @param decFile
• @return

• @throws IOException
  */
  private static File mergeFile(File sourceFile,File decFile) throws IOException{
  String[] fileList = sourceFile.list();
  for (String string : fileList) {
  File file = new File(sourceFile.getPath()+"/"+string);
  if(!file.isDirectory()){

  FileInputStream fis = new FileInputStream(file);
  FileOutputStream fos = new FileOutputStream(decFile, true);
  byte[] buffer = new byte[1024];
  int len = 0;
  while((len= fis.read(buffer)) != -1)
  fos.write(buffer, 0, len);
  }
  else {
  decFile = mergeFile(file,decFile);
  }
  }
  return decFile;
  }
  }