复制文件

/**
* 复制文件
*
* @param sourceFile
* @param descFile
*/
public static void copyFiles(File sourceFile, File descFile) {
if (sourceFile == null || !sourceFile.exists()
||descFile == null || !descFile.exists()) {
return;
}
File[] files = sourceFile.listFiles();
if (files == null) {
return;
}
for (File file : files) {
File newFile = new File(descFile + File.separator + file.getName());
if (file.isDirectory()) {
newFile.mkdir();
copyFiles(file, newFile);
} else {
try {
copyFile(file, newFile);
} catch (IOException e) {
Log.getlogger().error("复制文件失败！");
Log.exception(e);
}
}
}
}

private static void copyFile(File sourceFile, File descFile) throws IOException{ 
if (sourceFile == null || !sourceFile.exists() || descFile == null) {
return;
}
        // 新建文件输入流并对它进行缓冲   
        FileInputStream input = new FileInputStream(sourceFile); 
        BufferedInputStream inBuff=new BufferedInputStream(input); 
 
        // 新建文件输出流并对它进行缓冲   
        FileOutputStream output = new FileOutputStream(descFile); 
        BufferedOutputStream outBuff=new BufferedOutputStream(output); 
         
        // 缓冲数组   
        byte[] b = new byte[1024 * 5]; 
        int len; 
        while ((len = inBuff.read(b)) != -1) { 
            outBuff.write(b, 0, len); 
        } 
        // 刷新此缓冲的输出流
        if(outBuff != null){
        outBuff.flush();
        }
        //关闭流  
        if(inBuff != null){
        inBuff.close();
        }
        if(outBuff != null){
        outBuff.close();
        }
        if(output != null){
        output.close(); 
        }
        if(input != null){
        input.close(); 
        }
    }