搞定
QByteArray content = "name=1&pwd=1";
int contentLength = content.length();
QNetworkRequest req;
//req.setUrl(QUrl("http://192.168.1.121/test.php"));
req.setUrl(QUrl("http://192.168.1.59/index.php?do=check"));
req.setHeader(QNetworkRequest::ContentTypeHeader,"application/x-www-form-urlencoded");
req.setHeader(QNetworkRequest::ContentLengthHeader,contentLength);
QNetworkReply *rtn = networkManager->post(req,content);