学步园

JAVA中，当文件隐藏时FileOutputStream 将不可用，可采用RandomAccessFile来操作文件，但是POI的write函数参数只能是OutputStream，参考了网上的一种方法解决：

public final class HiddenFileOutStream extends OutputStream { 
        private final RandomAccessFile _raf; 
        public HiddenFileOutStream(File f) throws FileNotFoundException { 
                _raf = new RandomAccessFile(f, "rw"); 
        } 
        public void write(int b) throws IOException { 
                _raf.write(b); 
        } 
        public void write(byte[] b, int off, int len) throws IOException { 
                _raf.write(b, off, len); 
        } 
        public void close() throws IOException { 
        	_raf.close();
        } 
}