一个消息提示托盘程序的开发历程（采用socket技术，附源代码）二－－－服务端源代码

消息提示工具源码：
服务端：
Msg.h
/*
* Create Date: 2004-12-01
* Create By: 李春雷
* purpose: 协议用自定义消息结构:
* MESSAGEINFO:任务消息
* MsgType消息头：0xA登陆成功,0xB登陆失败,0xC工作消息,0xD任务结束标识
* LoginInfo:登陆消息
*/

//------------------------------------------------------------------------------

struct MESSAGEINFO{ //消息结构
int MsgType; //消息头：0xA登陆成功,0xB登陆失败,0xC工作消息,0xD任务结束标识
char MessageID[10]; //任务序号
char UsrCode[10]; //用户帐号
//char TastName[50]; //任务名称
char TastName[200]; //任务名称
char CreatTime[20]; //时间
};

struct LoginInfo{ //登陆信息
char pwd[20]; //用户密码
char userID[30]; //用户ID
};
//------------------------------------------------------------------------------

Unit1.cpp
//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop
#include "Unit1.h"
#include "Unit2.h"
#include "Msg.h"
#include <iniFiles.hpp>
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
String myProvider;//数据库连接字符
int Port; //端口;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
IsServer=false;
Server="localhost";
}
//---------------------------------------------------------------------------

void __fastcall TForm1::FormCreate(TObject *Sender)
{
//
char dir[MAX_PATH];
//----获取运行程序的目录开始
char *tfile = "/Config.ini";
//将程序现在目录所在输入此字符数组
::GetCurrentDirectory(MAX_PATH,dir);
//将现在目录加上指定文件名
strcat(dir,tfile);
//----获取运行程序的目录结束
TIniFile *ini = new TIniFile(dir);
try
{
myProvider = ini->ReadString("servercfg","Provider","Provider=OraOLEDB.Oracle.1;Password=pwsc;Persist Security Info=True;User ID=developer;Data Source=dl;Extended Properties=""");
Port = ini->ReadInteger("servercfg","port",1555);
}
catch(...)
{
MessageBox(Application->Handle,"读取配置文件config.ini失败!","信息提示!",MB_OK+MB_ICONINFORMATION+MB_SYSTEMMODAL);
delete ini;
}
delete ini;
ADOConnection1->ConnectionString = myProvider;
ADOConnection1->LoginPrompt = false;
try
{
ADOConnection1->Open();
}
catch(...)
{
ShowMessage("无法连接数据库");
return;
}

btndisconnect->Enabled=false;
}
//---------------------------------------------------------------------------

void __fastcall TForm1::btnlistenClick(TObject *Sender)
{
//程序运行后，如果用户按下＂监听＂钮，
//则将该程序设为服务器端，
//这时应将TServerSocket的Active属性设为True，
//使服务器自动进入监听状态。
ServerSocket1->Port = Port;
ServerSocket1->Active=true;
StatusBar1->SimpleText="正在监听...";
btnlisten->Enabled=false;
btndisconnect->Enabled=true;

}
//---------------------------------------------------------------------------
void __fastcall TForm1::ClientSocket1Connect(TObject *Sender,
TCustomWinSocket *Socket)
{
//当用户提出连接请求后，客户端会触发OnCreate事件，
StatusBar1->SimpleText="连接到:"+Server;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::ServerSocket1Accept(TObject *Sender,
TCustomWinSocket *Socket)
{
//在服务器接受了客户的请求后会触发OnAccept事件，
//在这个事件处理程序中将标志服务器端的变量IsServer设为True，
IsServer=true;
StatusBar1->SimpleText="连接到:"+Socket->RemoteAddress;

}
//---------------------------------------------------------------------------
//---- 非阻塞传输方式，当其中的一方进行写操作时，
//另一方会触发OnRead事件(客户端)或OnClientRead事件(服务器端)，
void __fastcall TForm1::ServerSocket1ClientRead(TObject *Sender,
TCustomWinSocket *Socket)
{
LoginInfo *loginfo = new LoginInfo;
Socket->ReceiveBuf(loginfo,50);
String mySql = "select yhxh from xt_yh where yhbh='";
mySql+=loginfo->userID;
mySql+="' and pwd='";
mySql+=loginfo->pwd;
mySql+="'";
ADOQuery2->Close();
ADOQuery2->Connection = ADOConnection1;
ADOQuery2->SQL->Clear();
ADOQuery2->SQL->Add(mySql);
ADOQuery2->Open();
int num = ADOQuery2->RecordCount;
MESSAGEINFO *LoginMsg = new MESSAGEINFO;
int MsgType;
if(num>0){
MsgType=0xA; //ok
LoginMsg->MsgType=MsgType;
}else{
MsgType=0xB; //nobody
LoginMsg->MsgType=MsgType;
}
for(int i=0;i<ServerSocket1->Socket->ActiveConnections;i++){
if(ServerSocket1->Socket->Connections[i]->RemoteAddress==Socket->RemoteAddress)
ServerSocket1->Socket->Connections[i]->SendBuf(LoginMsg,244);
}
ADOQuery2->Close();

}
//---------------------------------------------------------------------------
void __fastcall TForm1::btndisconnectClick(TObject *Sender)
{
ServerSocket1->Close();
btnlisten->Enabled=true;
btndisconnect->Enabled=false;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::ServerSocket1ClientDisconnect(TObject *Sender,
TCustomWinSocket *Socket)
{
StatusBar1->SimpleText="正在监听...";
}
//---------------------------------------------------------------------------
void __fastcall TForm1::ClientSocket1Disconnect(TObject *Sender,
TCustomWinSocket *Socket)
{
btnlisten->Enabled=true;
btndisconnect->Enabled=false;
StatusBar1->SimpleText="";
}
//---------------------------------------------------------------------------
void __fastcall TForm1::ClientSocket1Error(TObject *Sender,
TCustomWinSocket *Socket, TErrorEvent ErrorEvent, int &ErrorCode)
{
//---- 此外在客户端还应该增加错误捕获机制，
//当用户输入无效的服务器名或服务器端没有
//处于监听状态时能够及时给用户反馈信息。
StatusBar1->SimpleText="无法连接到:"+Socket->RemoteHost;
ErrorCode=0;
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Timer1Timer(TObject *Sender)
{
try{
if(ADOConnection1->Connected){
String strmessage="";
ADOQuery1->Close();
ADOQuery1->Connection = ADOConnection1;
ADOQuery1->SQL->Clear();
ADOQuery1->SQL->Add("select t.message_id as 序号,t.user_code as 责任人, t.message_title as 任务名称, to_char(t.create_time,'yyyy-mm-dd hh24:mi') as 时间, t.is_read as 是否阅读 from user_message t where t.is_read='F' and t.task_state = 'ASSIGN' order by t.message_id");
ADOQuery1->Open();
MESSAGEINFO *Msg = new MESSAGEINFO;

String MessageID; //任务序号
String UsrCode; //用户帐号
String TastName; //任务名称
String CreatTime; //时间

while(!ADOQuery1->Eof){
MessageID=ADOQuery1->FieldByName("序号")->AsString;
UsrCode=ADOQuery1->FieldByName("责任人")->AsString;
TastName=ADOQuery1->FieldByName("任务名称")->AsString;
CreatTime=ADOQuery1->FieldByName("时间")->AsString;
Msg->MsgType=0xC;
memcpy(Msg->MessageID,MessageID.c_str(),MessageID.Length()+1);
memcpy(Msg->UsrCode,UsrCode.c_str(),UsrCode.Length()+1);
memcpy(Msg->TastName,TastName.c_str(),TastName.Length()+1);
memcpy(Msg->CreatTime,CreatTime.c_str(),CreatTime.Length()+1);
//对客户端发消息：
for(int i=0;i<ServerSocket1->Socket->ActiveConnections;i++){
//ServerSocket1->Socket->Connections[i]->SendBuf(Msg,94);
ServerSocket1->Socket->Connections[i]->SendBuf(Msg,244);
Sleep(1);
}
ADOQuery1->Next();
}
Msg->MsgType=0xD; //结束符号
for(int i=0;i<ServerSocket1->Socket->ActiveConnections;i++){
//ServerSocket1->Socket->Connections[i]->SendBuf(Msg,94);
ServerSocket1->Socket->Connections[i]->SendBuf(Msg,244);
Sleep(1); //停1ms很关键
}
delete Msg;
}else{
Timer1->Enabled=false;
}
}
catch(...){
Application->MessageBox("访问数据库错误！请重新启动程序。",NULL,MB_OK);
Application->Terminate();
}
}

//---------------------------------------------------------------------------

void __fastcall TForm1::ServerSocket1ClientError(TObject *Sender,
TCustomWinSocket *Socket, TErrorEvent ErrorEvent, int &ErrorCode)
{
ErrorCode=0;
}
//---------------------------------------------------------------------------

void __fastcall TForm1::N2Click(TObject *Sender)
{
Application->Terminate();
}
//---------------------------------------------------------------------------

void __fastcall TForm1::N3Click(TObject *Sender)
{
FormAbout->ShowModal();
}
//---------------------------------------------------------------------------

Unit1.h

//---------------------------------------------------------------------------

#ifndef Unit1H
#define Unit1H
//---------------------------------------------------------------------------
#include <Classes.hpp>
#include <Controls.hpp>
#include <StdCtrls.hpp>
#include <Forms.hpp>
#include <ComCtrls.hpp>
#include <ExtCtrls.hpp>
#include <ScktComp.hpp>
#include <ADODB.hpp>
#include <Db.hpp>
#include <DBGrids.hpp>
#include <Grids.hpp>
#include <Menus.hpp>
//---------------------------------------------------------------------------
class TForm1 : public TForm
{
__published:// IDE-managed Components
TServerSocket *ServerSocket1;
TPanel *Panel1;
TButton *btnlisten;
TButton *btndisconnect;
TStatusBar *StatusBar1;
TADOConnection *ADOConnection1;
TADOQuery *ADOQuery1;
TDBGrid *DBGrid1;
TDataSource *DataSource1;
TTimer *Timer1;
TADOQuery *ADOQuery2;
TGroupBox *GroupBox1;
TMainMenu *MainMenu1;
TMenuItem *N1;
TMenuItem *N2;
TMenuItem *N3;
TMenuItem *N4;
TMenuItem *N5;
TMenuItem *N6;
void __fastcall FormCreate(TObject *Sender);
void __fastcall btnlistenClick(TObject *Sender);
void __fastcall ClientSocket1Connect(TObject *Sender,
TCustomWinSocket *Socket);
void __fastcall ServerSocket1Accept(TObject *Sender,
TCustomWinSocket *Socket);
void __fastcall ServerSocket1ClientRead(TObject *Sender,
TCustomWinSocket *Socket);
void __fastcall btndisconnectClick(TObject *Sender);
void __fastcall ServerSocket1ClientDisconnect(TObject *Sender,
TCustomWinSocket *Socket);
void __fastcall ClientSocket1Disconnect(TObject *Sender,
TCustomWinSocket *Socket);
void __fastcall ClientSocket1Error(TObject *Sender,
TCustomWinSocket *Socket, TErrorEvent ErrorEvent,
int &ErrorCode);
void __fastcall Timer1Timer(TObject *Sender);
void __fastcall ServerSocket1ClientError(TObject *Sender,
TCustomWinSocket *Socket, TErrorEvent ErrorEvent,
int &ErrorCode);
void __fastcall N2Click(TObject *Sender);
void __fastcall N3Click(TObject *Sender);
private:// User declarations
bool IsServer; //服务器标识
String Server; //服务器IP
public:// User declarations
__fastcall TForm1(TComponent* Owner);
};
//---------------------------------------------------------------------------
extern PACKAGE TForm1 *Form1;
//---------------------------------------------------------------------------
#endif

Unit2.h
//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Unit2.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TFormAbout *FormAbout;
//---------------------------------------------------------------------------
__fastcall TFormAbout::TFormAbout(TComponent* Owner)
: TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TFormAbout::Button1Click(TObject *Sender)
{
ModalResult = mrOk;
}
//---------------------------------------------------------------------------

Unit2.cpp
//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Unit2.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TFormAbout *FormAbout;
//---------------------------------------------------------------------------
__fastcall TFormAbout::TFormAbout(TComponent* Owner)
: TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TFormAbout::Button1Click(TObject *Sender)
{
ModalResult = mrOk;
}
//---------------------------------------------------------------------------

以上是服务端socket程序
另外，服务端的配置文件Config.ini内容如下：
[servercfg]
Provider=Provider=OraOLEDB.Oracle.1;Password=pwsc;Persist Security Info=True;User ID=developer;Data Source=dl;Extended Properties=""
Port=1555