目录文件操作

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.InputStream;
import java.io.PrintWriter;


/**
 * Created by IntelliJ IDEA.
 * User: Administrator
 * Date: 2005-12-30
 * Time: 15:05:27
 * To change this template use File | Settings | File Templates.
 */
public class FileUtils {

    /**
     * 新建目录
     * @param folderPath
     */
    public  void  newFolder(String  folderPath)  {
        try  {
            String  filePath  =  folderPath;
            filePath  =  filePath.toString();
            java.io.File  myFilePath  =  new  java.io.File(filePath);
            if  (!myFilePath.exists())  {
                myFilePath.mkdirs();
            }
        }
        catch  (Exception  e)  {
            System.out.println("新建目录操作出错");
            e.printStackTrace();
        }
    }

    /**
     * 新建文件
     * @param filePathAndName
     * @param fileContent
     */
    public  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
     */
    public  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();

        }

    }

    /**
     * 删除目录
     * @param folderPath
     */
    public  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  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
            }
        }
    }

    /**
     * 复制文件
     * @param oldPath
     * @param newPath
     */
    public  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];
                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();

        }

    }

    /**
     * 复制目录
     * @param oldPath
     * @param newPath
     */
    public  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  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  void  moveFolder(String  oldPath,  String  newPath)  {
        copyFolder(oldPath,  newPath);
        delFolder(oldPath);

    }

}