Qt5_TCP_Client01

ZC: 代码来自<<Qt及Qt Quick开发实战精解>>“代码\src\5\5-3”（“代码\src\5\5-4”里面的代码差不多，不知有何差别...貌似应该是更为完善）

ZC: 这是 Qt5 TCP客户端 简单测试类

1、TtcpClient.h

#ifndef TTCPCLIENT_H
#define TTCPCLIENT_H

#include <QObject>
#include <QTcpSocket>

class TtcpClient : public QObject
{
Q_OBJECT
public:
explicit TtcpClient(QObject *parent = 0);

signals:

public slots:

public:
QTcpSocket *FsktTcp;
public:
void NewConnectZ(QString _strDestIP, qint16 _iDestPort);// 创建新连接
void AbortZ();// 取消
void CloseZ();// 关闭
// ***
void WriteZ();// 发送数据
public slots:
void ReadyReadZ();// 读取数据
void SocketErrorZ(QAbstractSocket::SocketError _socketError);// 错误处理
};

#endif // TTCPCLIENT_H

2、TtcpClient.cpp

#include "TtcpClient.h"

#include <QDebug>
#include <QHostAddress>
#include <QDataStream>

TtcpClient::TtcpClient(QObject *parent) : QObject(parent)
{
FsktTcp = new QTcpSocket(this);

// 错误处理
connect(FsktTcp, SIGNAL(QAbstractSocket::error(SocketError)),
this, SLOT(SocketErrorZ(QAbstractSocket::SocketError)));
// 读取数据
connect(FsktTcp, SIGNAL(readyRead()), this, SLOT(ReadyReadZ()));
}

// 创建新连接
void TtcpClient::NewConnectZ(QString _strDestIP, qint16 _iDestPort)
{
FsktTcp->abort();
QHostAddress ha(_strDestIP);
FsktTcp->connectToHost(ha, _iDestPort);
}

// 取消
void TtcpClient::AbortZ()
{
FsktTcp->abort();
}

// 关闭
void TtcpClient::CloseZ()
{
FsktTcp->close();
}

// 错误处理
void TtcpClient::SocketErrorZ(QAbstractSocket::SocketError _socketError)
{
switch(_socketError)
{
case QAbstractSocket::RemoteHostClosedError :
{
qDebug() << "Remote host closed .";
break;
}
default : qDebug() << FsktTcp->errorString();
}
}

// 读取数据
void TtcpClient::ReadyReadZ()
{
QDataStream in(FsktTcp);
in.setVersion(QDataStream::Qt_5_5);

QByteArray baRead = FsktTcp->readAll();

qDebug() << QString::fromLocal8Bit(baRead);
// 接收完毕，就关闭socket
}

// 发送数据
void TtcpClient::WriteZ()
{
QByteArray outBlock;
outBlock = outBlock.append("test out");

QDataStream out(&outBlock, QIODevice::WriteOnly);
out.setVersion(QDataStream::Qt_5_5);

//qDebug() << outBlock.size();
//out.

// 发送数据
FsktTcp->write(outBlock);
}

3、