java复制文件

 1 /**

 2      * @param sourceFile

 3      * @param targetFile

 4      * @throws IOException

 5      */

 6     public static void copyFile(File sourceFile, File targetFile)

 7             throws IOException {

 8         BufferedInputStream inBuff = null;

 9         BufferedOutputStream outBuff = null;

10         try {

11             inBuff = new BufferedInputStream(new FileInputStream(sourceFile));

12             outBuff = new BufferedOutputStream(new FileOutputStream(targetFile));

13 

14             byte[] b = new byte[1024 * 1024];

15             int len;

16             while ((len = inBuff.read(b)) != -1) {

17                 outBuff.write(b, 0, len);

18             }

19             outBuff.flush();

20         } finally {

21             if (inBuff != null)

22                 inBuff.close();

23             if (outBuff != null)

24                 outBuff.close();

25         }

26     }