java.net.ProtocolException 错误

[zdy199706]

代码

		HttpURLConnection hc=(HttpURLConnection) (new URL(localhost)).openConnection(); 
		hc.setRequestMethod("POST");
		hc.setRequestProperty("Content-Length", data.length()+"");
		hc.setDoOutput(true);
		OutputStream os=hc.getOutputStream();
		os.write(data.getBytes());

已知 最后一行报错
data里面有中文就会报错
错误信息：

java.net.ProtocolException: exceeded content-length limit of 47 bytes

[JavaMan]

hc.setRequestProperty("Content-Length", data.length()+""); 把这个去掉，或者把长度值乘以10.