我尝试在foreach循环中逐行地将字符串从客户端发送到服务器:
foreach(QString s, stringlist)
client.sendMessage(s);
但客户端只收到第一个字符串。当我删除" \ n"从一个字符串,服务器接收一串在一个大字符串中合并在一起的字符串。我认为添加" \ n"会将数据划分为我可以使用readLine()
读取的字符串。我错过了什么?
我的客户
class cClient:public QTcpSocket
{
public:
void sendMessage(QString text)
{
text = text + "\n";
write(text.toUtf8());
}
};
和服务器:
class pServer:public QTcpServer
{
Q_OBJECT
public:
pServer()
{
connect(this,SIGNAL(newConnection()),SLOT(slotNewConnection()));
}
public slots:
void slotNewConnection()
{
QTcpSocket* c = nextPendingConnection();
connect(c,SIGNAL(readyRead()),this, SLOT(readData()));
}
void readData()
{
QTcpSocket* conn = qobject_cast<QTcpSocket*>(sender());
QString data = QString(conn->readLine());
}
};
答案 0 :(得分:3)
您当时可能会收到多行,但只能阅读第一行。通过canReadLine查看尽可能多的行。这样的事情:
void readData()
{
QTcpSocket* conn = qobject_cast<QTcpSocket*>(sender());
QStringList list;
while (conn->canReadLine())
{
QString data = QString(conn->readLine());
list.append(data);
}
}