将Reader转为String

public void printReader(Reader reader)
{
	  BufferedReader r = new BufferedReader(reader);
	  StringBuffer sb = new StringBuffer();
	  String line;
	  try 
	  {
			while((line=r.readLine())!=null) 
			{
				 
				 sb.append(line);
				 sb.append("\r\n");
			}
	} 
	catch (IOException e) 
	{
		e.printStackTrace();
	}
    sb.toString();
    System.out.println(sb);
}