帮忙,我到处寻找可能的地方。如果我从主类创建到TCP服务器的连接,则一切正常。但是,如果我创建一个单独的类,它将给出错误“函数的参数过多”。
Qt版本5.9.9使用QTcpSocket
tcpclient.h
#ifndef TCPCLIENT_H
#define TCPCLIENT_H
#include <QObject>
#include <QTcpSocket>
#include <QDataStream>
#include <QHostAddress>
class TcpClient : public QObject {
public:
TcpClient(QObject *parent = 0);
private:
QTcpSocket *tcpSocket;
const QString ip = "185.137.235.92";
const int port = 9080;
public slots:
void connect();
private slots:
void onReadyRead();
void onConnected();
void onDisconnected();
};
#endif // TCPCLIENT_H
tcpclient.cpp
#include "tcpclient.h"
TcpClient::TcpClient(QObject *parent) :QObject(parent) {
tcpSocket = new QTcpSocket(this);
connect(tcpSocket, SIGNAL(readyRead()), this, SLOT(onReabyRead()));
connect(tcpSocket, SIGNAL(connected()), this, SLOT(onConnected()));
connect(tcpSocket, SIGNAL(disconnected()), this, SLOT(onDisconnected()));
}
void TcpClient::connect() {
tcpSocket->connectToHost(QHostAddress(ip), port);
}
void TcpClient::onReadyRead() {
}
void TcpClient::onConnected() {
if(tcpSocket->waitForConnected() ) {
QDataStream in(tcpSocket);
ushort id;
uint size;
quint8 type;
ushort action;
QString message;
in >> id >> size >> type >> action;
message = tcpSocket->read(size);
qDebug() << id;
qDebug() << size;
qDebug() << type;
qDebug() << action;
qDebug() << message;
}
}
void TcpClient::onDisconnected() {
}
编译器发现模棱两可,因为您似乎正在尝试调用该方法
void TcpClient::connect()
这没有参数...所以解决方案是“告诉编译器应该采用哪种方法”,即您必须替换为:
connect(tcpSocket, SIGNAL(readyRead()), this, SLOT(onReabyRead()));
与
QObject::connect(tcpSocket, SIGNAL(readyRead()), this, SLOT(onReabyRead()));
经过这种修改,编译器意识到您编写的连接调用是来自QObject
该类的,而不是TcpClient
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