客户端的界面是:
两个文本框用来填写server的IP和端口号,三个按钮:“连接”、“发送”、“断开”,一个文本框填写发送的文本(如:aaa),一个文本框显示接受到的服务器应答文本(如:bbb)可以将代码发到
谢谢!
两个文本框用来填写server的IP和端口号,三个按钮:“连接”、“发送”、“断开”,一个文本框填写发送的文本(如:aaa),一个文本框显示接受到的服务器应答文本(如:bbb)可以将代码发到
谢谢!
使用TCP/IP协议实现聊天程序
使用TCP/IP协议实现聊天程序
TCP/IP协议的传输即面向点到点的传输方式!1.创建应用程序。选择“NEW”菜单下的“Application”选项,创建一个普通的应用程序。2.创建所需控件。首先在控件栏的Win32页中选择ImageList控件和CoolBar控件,再从Win32栏选择ToolBar控件放置到CoolBar控件上。用鼠标右键单击“ImageList”控件,在弹出的菜单中选择“ImageList Editer...”选项,弹出“ImageList Editer”对话框,单击“Add...”按钮,选择5幅位图。在对象管理器Object Inspector中将ToolBar控件的Image属性设为“ImageList1”,用鼠标右键单击“ToolBar”控件,选“New Button”选项,总共创建5个ToolButton,在 对象管理器中将5个ToolButton的ImageIndex属性分别设置为0,1,2,3,4。此时ImageList控件中的5幅位图将会分别显示在Toolbutton上,将5个ToolButton控件的ShowHint属性全都设置为“ture”,并将它们的Hint属性分别设置为“监听”、“连接”、“断开连接”、“更改你的昵称”和“退出聊天程序”。然后在窗体中放置一个Edit控件、Memo控件、StatusBar控件和一个Label控件。将Label控件的Caption属性设置为“输入框”。最后,也是最关键的,在控件栏的Internet页中选择SeverSocket控件和ClientSocket控件放置在窗体中,将SeverSocket控件和ClientSocket控件的Port属性设置为“1100”。SeverSocket控件是基于TCP/IP协议传输的服务器方的控件,它的主要作用是用来监听其它基于TCP/IP传输计算机的连接请求,并在收到连接请求时建立连接,进行数据传输,ClientSocket控件是基于TCP/IP传输的客户方的控件,它的主要作用是向监听TCP/IP传输的服务器发出连接请求,在收到服务器的允许连接的响应后,建立连接,并传输数据,之所以在窗体中同时创建ServerSocket和ClientSocket控件,是因为应用程序既可作为服务器,又可作为客户端使用。3.Serversocket和ClientSocket之间的连接首先设置两个全局变量:NickName:string;b_Client:boolean;其中NickName用于放聊天人的名称,b_Client用于表明应用程序是否作为客户端进行数据传输。在窗体Form1的Oncreate事件中初始化变量,代码如下:procedure TForm1.FormCreate(Sender:TObject);beginNickName:+="我的昵称";b_Client:=ture;end;双击ToolButton1,编写服务器监听代码如下:procedure TForm1.Toolbutton1Click(Sender:TObject);beginClientSocket1.close;ServerSocket1.open;StatusBar1.SimpleText:='开始监听’;end;双击ToolButton2,编写客户的申请连接,代码如下:procedure TForm1.ToolButton2Click(Sender:TObject);var s:string;beginif Clientsocket1.Active thenClientSocket1.close;if InputQuery('连接到计算机','要连接的计算机名称或IP地址:',s) thenif Length(s)>0 thenwith ClientSocket1 dobeginHost:=s;open;end;end;在对象管理器中,双击ClientSocket事件页的OnConnecting事件,编写处理客户等待连接请求,代码如下:procedure TForm1.ClientSocket1Connecting(Sender:TObject;Socket:TCustomWinSocket);beginStatusBar1.SimpleText:='等待来自'+Socket.RemoteAddress+'的连接允许响应...';end;在对象管理器中,双击SeverSocket事件页的OnAccept事件,处理服务器响应连接事件,代码如下:procedure TForm1.SeverSocket1Accept(Sender:TObject;Socket:TCustomWinSocket);beginb_Client:=false;StatusBar1.SimpleText:='连接到'+Socket.RemoteAddress;end;在对象管理器中,双击ClientSocket事件页的OnConnect事件,OnConnect事件在连接成功时被调用,代码如下:procedure TForm1.ClientSocket1Connect(Sender:TObject;Socket:TCustomWinSocket);beginb_Client:=ture;StatusBar1.SimpleText:='连接成功';end;4.ServerSocket和ClientSocket之间的数据传输聊天的内容是通过Edit控件输入并在敲回车键后显示在Memo控件中,再传输到与之连接的计算机中。Edit的OnKeyDown事件代码如下:procedure TForm1.Edit1KeyDown(Sender:TObject;var Key:Word;Shift:TShiftState);beginif Key=VK_Return thenbeginMemo1.Lines.Add(NickName+':'+Edit1.Text0;if b_Client thenClientSocket1.Socket.SendText(Memo1.Lines[Memo1.lines.Count-1])elseServerSocket1.Socket.Connections[0].SendText(Memo1.Lines[Memo1.lines.Count-1]);end;end;在ServerSocket控件的onread事件中编写服务器接收到数据后的动作,代码如下:procedure TForm1.ServerSocket1ClientRead(Sender:TObject;Socket:TCustomWinSocket);beginMemo1.lines.Add(Socket.ReceiveText);end;在ClientSocket控件的onread事件中编写客户端接收到数据后的动作,代码如下:procedure TForm1.ClientSocket1Read(Sender:TObject;Socket:TCustomWinSocket);beginMemo1.lines.Add(Socket.ReceiveText);end;5.断开Serversocket和ClientSocket之间的连接双击ToolButton3,编写客户端断开的处理过程,代码如下:procedure TForm1.ToolButton3Click(Sender:TObject);beginClientSocket1.close;StatusBar1.SimpleText:='断开连接';end;编写服务器响应客户端断开的处理过程,代码如下:procedure TForm1.ServerSocket1ClientDisconnect(Sender:TObject;Socket:TCustomWinSocket); beginSeverSocket1.close;StatusBar1.SimpleText:='断开连接';end;6.更改聊天者的昵称双击Toolbutton4,编写更改昵称代码如下:procedure TForm1.ToolButton4Click(sender:TObject);vars:string;beginif InputQuery('更改昵称','你的新昵称',s) thenif Length(s)>0 thenNickName:=s;end;7.退出应用程序双击Toolbutton5,编写退出应用程序代码如下:procedure TForm1.ToolButton5Click(sender:TObject);ClientSocket1.close;ServerSocket1.close;Form1.close;end;8.保存并运行应用程序最好在网上运行该程序,如果没联网,但你的计算机支持TCP/IP协议(可以通过网络邻居安装TCP/IP协议),你可以在你的计算机上从“我的电脑”中运行该应用程序的两个实例。运行后,将一个聊天程序作为服务器监听,另一个聊天程序作为客户与服务器连接并聊天。局域网中同样可以运行!!!
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ScktComp, StdCtrls;type
TForm1 = class(TForm)
ClientSocket1: TClientSocket;
ServerSocket1: TServerSocket;
btnConnectToServer: TButton;
btnServerListen: TButton;
btnSendToServer: TButton;
Edit1: TEdit;
btnDisconnectFromServer: TButton;
procedure ServerSocket1ClientRead(Sender: TObject;
Socket: TCustomWinSocket);
procedure btnServerListenClick(Sender: TObject);
procedure btnConnectToServerClick(Sender: TObject);
procedure btnSendToServerClick(Sender: TObject);
procedure ClientSocket1Read(Sender: TObject; Socket: TCustomWinSocket);
procedure btnDisconnectFromServerClick(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;var
Form1: TForm1;implementation{$R *.dfm}procedure TForm1.ServerSocket1ClientRead(Sender: TObject;
Socket: TCustomWinSocket);
begin
// showMessage(ServerSocket1.Socket.Connections[0].ReceiveText);
// ServerSocket1.Socket.Connections[0].SendText('dddd');
ShowMessage( Socket.ReceiveText);
Socket.SendText('xxx');
end;procedure TForm1.btnServerListenClick(Sender: TObject);
begin
ServerSocket1.Open;
end;procedure TForm1.btnConnectToServerClick(Sender: TObject);
begin
ClientSocket1.Open;
end;procedure TForm1.btnSendToServerClick(Sender: TObject);
begin
ClientSocket1.Socket.SendText(Edit1.Text);
end;procedure TForm1.ClientSocket1Read(Sender: TObject;
Socket: TCustomWinSocket);
begin
Caption:=Socket.ReceiveText;
end;procedure TForm1.btnDisconnectFromServerClick(Sender: TObject);
begin
ClientSocket1.Close;
end;end.
您上面提供的程序,在delphi7中调试不出来,:( ,按F9没有反应。
能否将client和server分别写成两个程序,该怎么实现,请不吝赐教。
把它们放到窗体上就行了啊。
分两个程序就是:///////////////////////
////// server ////////
//////////////////////
unit Unit1;interfaceuses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ScktComp, StdCtrls;type
TForm1 = class(TForm)
ServerSocket1: TServerSocket;
btnServerListen: TButton;
procedure ServerSocket1ClientRead(Sender: TObject;
Socket: TCustomWinSocket);
procedure btnServerListenClick(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;var
Form1: TForm1;implementation{$R *.dfm}procedure TForm1.ServerSocket1ClientRead(Sender: TObject;
Socket: TCustomWinSocket);
begin
// showMessage(ServerSocket1.Socket.Connections[0].ReceiveText);
// ServerSocket1.Socket.Connections[0].SendText('dddd');
ShowMessage( Socket.ReceiveText);
Socket.SendText('xxx');
end;procedure TForm1.btnServerListenClick(Sender: TObject);
begin
ServerSocket1.Open;
end;end.///////////////////////
////// Client ////////
//////////////////////
unit Unit1;interfaceuses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ScktComp, StdCtrls;type
TForm1 = class(TForm)
ClientSocket1: TClientSocket;
btnConnectToServer: TButton;
btnSendToServer: TButton;
Edit1: TEdit;
btnDisconnectFromServer: TButton;
procedure btnConnectToServerClick(Sender: TObject);
procedure btnSendToServerClick(Sender: TObject);
procedure ClientSocket1Read(Sender: TObject; Socket: TCustomWinSocket);
procedure btnDisconnectFromServerClick(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;var
Form1: TForm1;implementation{$R *.dfm}procedure TForm1.btnConnectToServerClick(Sender: TObject);
begin
ClientSocket1.Open;
end;procedure TForm1.btnSendToServerClick(Sender: TObject);
begin
ClientSocket1.Socket.SendText(Edit1.Text);
end;procedure TForm1.ClientSocket1Read(Sender: TObject;
Socket: TCustomWinSocket);
begin
Caption:=Socket.ReceiveText;
end;procedure TForm1.btnDisconnectFromServerClick(Sender: TObject);
begin
ClientSocket1.Close;
end;end.
//客户端uses
ScktComp; //加入Socket单元
.
.
.var
ClientSocket: TClientSocket; //也可放控件
.
.
.
procedure TForm1.FormCreate(Sender: TObject);
begin
ClientSocket := TClientSocket;
with ClientSocket do
begin
ClientType := ctNonBlocking;
OnRead := Read; //事件指定
end;
end;procedure TForm1.Read(Sender: TObject; Socket: TCustomWinSocket);
begin
edtRec := Socket.ReceiveText;
end;procedure TForm1.btnConnectClick(Sender: TObject); //'连接'按钮
begin
with ClientSocket do
begin
Host := Trim(edtIP); //edtIP--Edit框
Port := StrToIntDef(edtPort, 8045); //edtPort--Edit框
try
Open;
except
ShowMessage('连接失败!');
end;
end; procedure TForm1.btnSendClick(Sender: TObject); //'发送'按钮
begin
ClientSocket.Socket.SendText('A text from Client');
end;procedure TForm1.btnCloseClick(Sender: TObject); //'断开'按钮
begin
ClientSocket.Close;
end;
//服务端uses
ScktComp;var
ServerSocket: TServerSocket;procedure TForm1.FormCreate(Sender: TObject);
begin
ServerSocket := TSErverSocket.Create(nil);
with ServerSocket do
begin
Port := StrToIntDef(dtPort, 8045);
ServerType := stNonBlocking;
OnClientRead := ClientRead;
end;
end;procedure TForm1.Read(Sender: TObject; Socket: TCustomWinSocket);
begin
Socket.SendText('Return from Server');
end;
SOCKET 作出应答
SOCKET.SENTTEXT('OK');