解决向OutputStream流中插入空行

String filePath

主要代码如下：

FileOutputStream out = new FileOutputStream(new File(filePath));

BufferedOutputStream bw=new BufferedOutputStream(out); 
bw.write(b);
byte[] line = null;
line = "\r\n".getBytes();
bw.write(line);
bw.close();
out.flush();
out.close();