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  • java 字节流文件复制方法总结

    1、使用字节流每次读写单个字节

     1 public static void main(String[] args) throws IOException {
     2         FileInputStream fis = new FileInputStream("C:\CloudMusic\1.mp3");
     3         FileOutputStream fos = new FileOutputStream("e:\1.mp3");
     4         int len = 0;
     5         while ((len = fis.read()) != -1) {
     6             fos.write(len);
     7         }
     8         if (fos != null) {
     9             fos.close();
    10         }
    11         if (fis != null) {
    12             fis.close();
    13         }
    14     }

    2、使用字节流每次读写多个字节

     1 public static void main(String[] args) throws IOException {
     2         FileInputStream fis = new FileInputStream("C:\CloudMusic\1.mp3");
     3         FileOutputStream fos = new FileOutputStream("e:\1.mp3");
     4         byte[] b = new byte[1024];
     5         int len = 0;
     6         while ((len = fis.read(b)) != -1) {
     7             fos.write(b,0,len);
     8         }
     9         if (fos != null) {
    10             fos.close();
    11         }
    12         if (fis != null) {
    13             fis.close();
    14         }
    15     }

    3、使用字节缓冲流每次读写单个字节

     1 public static void main(String[] args) throws IOException {
     2         BufferedInputStream bis = new BufferedInputStream(new FileInputStream("C:\CloudMusic\1.mp3"));
     3         BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream("e:\1.mp3"));
     4         int len = 0;
     5         while ((len = bis.read()) != -1) {
     6             bos.write(len);
     7         }
     8         if (bos != null) {
     9             bos.close();
    10         }
    11         if (bis != null) {
    12             bis.close();
    13         }
    14     }

    4、使用字节缓冲流每次读写多个字节

     1 public static void main(String[] args) throws IOException {
     2         BufferedInputStream bis = new BufferedInputStream(new FileInputStream("C:\CloudMusic\1.mp3"));
     3         BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream("e:\1.mp3"));
     4         byte[] b = new byte[1024];
     5         int len = 0;
     6         while ((len = bis.read(b)) != -1) {
     7             bos.write(b, 0, len);
     8         }
     9         if (bos != null) {
    10             bos.close();
    11         }
    12         if (bis != null) {
    13             bis.close();
    14         }
    15     }
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  • 原文地址:https://www.cnblogs.com/voidchar/p/10410278.html
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