Question

我有非常简单的java服务器：

int port = 2245;
       try {
         ServerSocket ss = new ServerSocket(port);
         System.out.println("Waiting for a client...");

         Socket incomingClient = ss.accept();
         InputStream i = incomingClient.getInputStream();
         OutputStream o = incomingClient.getOutputStream();  // Use it write to the Client Socket
         InputStreamReader isr = new InputStreamReader(i);
         BufferedReader br = new BufferedReader(isr);
         String str = new String();

         while ((str = br.readLine())!=null){
                System.out.println("str = " + str);
                o.write(123); //("message from server");
          }
       } catch(Exception x) { x.printStackTrace(); }

我有简单的Qt客户端，它使用QNetworkAccessManager

QNetworkAccessManager *manager = new QNetworkAccessManager(this);
QUrl url("http://127.0.0.1:2245");
url.port(6666);
QByteArray postData;
QNetworkRequest request(url);
request.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");

QString postKey("SomeKey");
postData.append(postKey);
QObject::connect(manager, SIGNAL(finished(QNetworkReply *)), this, SLOT(replyFinished(QNetworkReply *)));

我在插槽replyFinished中的mainwindow.h中声明了

public slots: 
void replyFinished(QNetworkReply* reply);

在最好的情况下，Server会获得一些标题（POST / HTTP / 1.1 内容类型：application / x-www-form-urlencoded和其他）

但是在服务器上我无法从客户端读取我的消息和客户端没有收到来自Java服务器的任何响应

Answer 1

Qt客户端的正确代码是：

QNetworkAccessManager *manager = new QNetworkAccessManager(this);
QUrl url("http://192.168.0.101:8000");
url.port(8000);

QByteArray postData;
QNetworkRequest request(url);
request.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");

QString postKey("some data");
postData.append(postKey);
QObject::connect(manager, SIGNAL(finished(QNetworkReply *)), this, SLOT(replyFinished(QNetworkReply *)));

manager->post(request, postData);

}

并获得响应声明并实现以下插槽

void MainWindow::replyFinished(QNetworkReply *reply){
qDebug() << "Status" << reply->errorString();
qDebug() << "Status" << reply->error();


     QByteArray data = reply->readAll(); //It's works!
     qDebug() << "data: " << data;

}

对于服务器端，我使用了HttpServer，它在最新版本的JDK中可用

java上的服务器无法从Qt客户端获取消息

1 个答案: