标签：finally 16px block oid class otf code opened jpg
目标：复制一个文件夹下所有的文件及目录
问题分解
1.复制一个文件到指定位置
2.复制指定目录下的所有文件到指定位置
3.复制指定目录下所有是文件及目录到指定位置
代码
1.复制一个文件到指定位置
1 import java.io.BufferedInputStream; 2 import java.io.BufferedOutputStream; 3 import java.io.File; 4 import java.io.FileInputStream; 5 import java.io.FileNotFoundException; 6 import java.io.FileOutputStream; 7 import java.io.IOException; 8 9 public class TestCopyFile { 10 public static void copyOneFile(File src,File dest) { 11 BufferedInputStream bis=null; 12 BufferedOutputStream bos=null; 13 try { 14 bis = new BufferedInputStream(new FileInputStream(src)); 15 bos = new BufferedOutputStream(new FileOutputStream(dest)); 16 17 byte[] buf=new byte[1024]; 18 int len=-1; 19 20 while((len=bis.read(buf))!=-1) { 21 bos.write(buf, 0, len); 22 } 23 } catch (FileNotFoundException e) { 24 // TODO Auto-generated catch block 25 e.printStackTrace(); 26 } catch (IOException e) { 27 // TODO Auto-generated catch block 28 e.printStackTrace(); 29 }finally { 30 if(bos!=null) { 31 try { 32 bos.close(); 33 } catch (IOException e) { 34 // TODO Auto-generated catch block 35 e.printStackTrace(); 36 } 37 } 38 if(bis!=null) { 39 try { 40 bis.close(); 41 } catch (IOException e) { 42 // TODO Auto-generated catch block 43 e.printStackTrace(); 44 } 45 } 46 } 47 } 48 49 public static void main(String[] args) { 50 File src=new File("D:\\Test\\恋する彼女の不器用な舞台 Visual Fan Book (JPG).zip"); 51 File dest=new File("F:\\恋する彼女の不器用な舞台 Visual Fan Book (JPG).zip"); 52 copyOneFile(src, dest); 53 } 54 }
2.复制指定目录下的所有文件到指定位置
1 import java.io.BufferedInputStream; 2 import java.io.BufferedOutputStream; 3 import java.io.File; 4 import java.io.FileInputStream; 5 import java.io.FileNotFoundException; 6 import java.io.FileOutputStream; 7 import java.io.IOException; 8 9 public class TestCopyFile { 10 public static void copyOneFile(File src,File dest) { 11 BufferedInputStream bis=null; 12 BufferedOutputStream bos=null; 13 try { 14 bis = new BufferedInputStream(new FileInputStream(src)); 15 bos = new BufferedOutputStream(new FileOutputStream(dest)); 16 17 byte[] buf=new byte[1024]; 18 int len=-1; 19 20 while((len=bis.read(buf))!=-1) { 21 bos.write(buf, 0, len); 22 } 23 } catch (FileNotFoundException e) { 24 // TODO Auto-generated catch block 25 e.printStackTrace(); 26 } catch (IOException e) { 27 // TODO Auto-generated catch block 28 e.printStackTrace(); 29 }finally { 30 if(bos!=null) { 31 try { 32 bos.close(); 33 } catch (IOException e) { 34 // TODO Auto-generated catch block 35 e.printStackTrace(); 36 } 37 } 38 if(bis!=null) { 39 try { 40 bis.close(); 41 } catch (IOException e) { 42 // TODO Auto-generated catch block 43 e.printStackTrace(); 44 } 45 } 46 } 47 } 48 49 public static void copyAllFiles(File src,File dest) { 50 if(!dest.exists()) { 51 dest.mkdir(); 52 } 53 File[] flies=src.listFiles(); 54 for (File file : flies) { 55 if(file.isFile()) { 56 copyOneFile(new File(src+"\\"+file.getName()) ,new File(dest+"\\"+file.getName())); 57 } 58 } 59 } 60 61 public static void main(String[] args) { 62 File src=new File("D:\\Test"); 63 File dest=new File("F:\\Test"); 64 copyAllFiles(src, dest); 65 } 66 }
3.复制指定目录下所有是文件及目录到指定位置
1 import java.io.BufferedInputStream; 2 import java.io.BufferedOutputStream; 3 import java.io.File; 4 import java.io.FileInputStream; 5 import java.io.FileNotFoundException; 6 import java.io.FileOutputStream; 7 import java.io.IOException; 8 9 public class TestCopyFile { 10 public static void copyOneFile(File src,File dest) { 11 BufferedInputStream bis=null; 12 BufferedOutputStream bos=null; 13 try { 14 bis = new BufferedInputStream(new FileInputStream(src)); 15 bos = new BufferedOutputStream(new FileOutputStream(dest)); 16 17 byte[] buf=new byte[1024]; 18 int len=-1; 19 20 while((len=bis.read(buf))!=-1) { 21 bos.write(buf, 0, len); 22 } 23 } catch (FileNotFoundException e) { 24 // TODO Auto-generated catch block 25 e.printStackTrace(); 26 } catch (IOException e) { 27 // TODO Auto-generated catch block 28 e.printStackTrace(); 29 }finally { 30 if(bos!=null) { 31 try { 32 bos.close(); 33 } catch (IOException e) { 34 // TODO Auto-generated catch block 35 e.printStackTrace(); 36 } 37 } 38 if(bis!=null) { 39 try { 40 bis.close(); 41 } catch (IOException e) { 42 // TODO Auto-generated catch block 43 e.printStackTrace(); 44 } 45 } 46 } 47 } 48 49 public static void copyAllFiles(File src,File dest) { 50 if(!dest.exists()) { 51 dest.mkdir(); 52 } 53 File[] flies=src.listFiles(); 54 for (File file : flies) { 55 if(file.isFile()) { 56 copyOneFile(new File(src+"\\"+file.getName()) ,new File(dest+"\\"+file.getName())); 57 }else { 58 copyAllFiles(new File(src+"\\"+file.getName()) ,new File(dest+"\\"+file.getName())); 59 } 60 } 61 } 62 63 public static void main(String[] args) { 64 File src=new File("D:\\Test"); 65 File dest=new File("F:\\Test"); 66 copyAllFiles(src, dest); 67 } 68 }
标签：finally 16px block oid class otf code opened jpg
原文地址：https://www.cnblogs.com/syxy/p/12353260.html
