我看不到这段代码有什么问题：
JSONObject msg; //passed in as a parameter to this method
HttpURLConnection httpCon = (HttpURLConnection) url.openConnection();
httpCon.setDoOutput(true);
httpCon.setDoInput(true);
httpCon.setUseCaches(false);
httpCon.setRequestProperty( "Content-Type","application/json" );
httpCon.setRequestProperty("Accept","application/json");
httpCon.setRequestMethod("POST");
OutputStream os = httpCon.getoutputStream();
OutputStreamWriter osw = new OutputStreamWriter(os,"UTF-8");
msg.write(osw);
osw.flush();
osw.close();
os.close(); //probably overkill
在服务器上,我没有收到任何帖子内容,零长度的字符串.
解决方法
尝试
...
httpCon.setRequestMethod("POST");
httpCon.connect(); // Note the connect() here
...
OutputStream os = httpCon.getoutputStream();
OutputStreamWriter osw = new OutputStreamWriter(os,"UTF-8");
...
osw.write(msg.toString());
osw.flush();
osw.close();
发送数据.
检索数据尝试：
BufferedReader br = new BufferedReader(new InputStreamReader( httpCon.getInputStream(),"utf-8"));
String line = null;
while ((line = br.readLine()) != null) {
sb.append(line + "\n");
}
br.close();
System.out.println(""+sb.toString());