今日任务：QT实现TCP服务器客户端搭建的代码，现象

 ser：

#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);server = new QTcpServer(this);connect(server,&QTcpServer::newConnection,this,&Widget::newConnectionSlot);}Widget::~Widget()
{delete ui;
}void Widget::on_startButton_clicked()
{quint16 port = ui->portEdit->text().toUInt();//监听客户端的连接请求if(!server->listen(QHostAddress::Any,port)){QMessageBox::information(this,"失败","监听失败");return;}else{QMessageBox::information(this,"成功","服务器启动成功");}
}void Widget::newConnectionSlot()
{//qDebug()<<"您有新的客户端发来请求";QTcpSocket *s = server->nextPendingConnection();clientList.push_back(s);connect(s,&QTcpSocket::readyRead,this,&Widget::readyReadSlot);
}void Widget::readyReadSlot()
{for(int i = 0;i < clientList.size();i++){//判断当前套接字是否有效连接if(!clientList[i]->state()){//将该套接字移除客户端容易clientList.removeAt(i);}}for(int i = 0;i < clientList.size();i++){if(clientList[i]->bytesAvailable()){//将该套接字的数据读取出来QByteArray msg = clientList[i]->readAll();ui->msgWidget->addItem(QString::fromLocal8Bit(msg));for(int j = 0;j < clientList.size();j++){clientList[j]->write(msg);}}}
}

cli：

#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);server = new QTcpServer(this);connect(server,&QTcpServer::newConnection,this,&Widget::newConnectionSlot);}Widget::~Widget()
{delete ui;
}void Widget::on_startButton_clicked()
{quint16 port = ui->portEdit->text().toUInt();//监听客户端的连接请求if(!server->listen(QHostAddress::Any,port)){QMessageBox::information(this,"失败","监听失败");return;}else{QMessageBox::information(this,"成功","服务器启动成功");}
}void Widget::newConnectionSlot()
{//qDebug()<<"您有新的客户端发来请求";QTcpSocket *s = server->nextPendingConnection();clientList.push_back(s);connect(s,&QTcpSocket::readyRead,this,&Widget::readyReadSlot);
}void Widget::readyReadSlot()
{for(int i = 0;i < clientList.size();i++){//判断当前套接字是否有效连接if(!clientList[i]->state()){//将该套接字移除客户端容易clientList.removeAt(i);}}for(int i = 0;i < clientList.size();i++){if(clientList[i]->bytesAvailable()){//将该套接字的数据读取出来QByteArray msg = clientList[i]->readAll();ui->msgWidget->addItem(QString::fromLocal8Bit(msg));for(int j = 0;j < clientList.size();j++){clientList[j]->write(msg);}}}
}

效果图：