扩展DLL好像是要用VC编写,而且有一定要求,具体地参考SQL联机帮助另一种是编写ole,参考下面的VB代码及调用示例--SQL Server的存储过程调用Com组件 /*--下面的部分在VB中完成首先我们先用VB 作一个最简单的组件工程名称: testSQLCOM 类名: TestMath'函数,计算两个整数相加的结果 Public Function AddMe(a As Long, b As Long) As Long AddMe = a + b End Function编译生成后,我们就可以在 Sql Server 中对这个 Com 组件进行调用了 --*//*--下面是SQL中对上面DLL的调用--*/--定义用到的变量 declare @err int,@src varchar(255),@desc varchar(255) declare @obj int,@re int--创建调用实例 exec @err=sp_OACreate 'testSQLCOM.TestMath', @obj out if @err<>0 goto lberr --如果创建失败,则进行错误处理--调用DLL中的函数 exec @err=sp_OAMethod @obj,'AddMe',@re out,100,200 if @err<>0 goto lberr --如果调用错误,则进行错误处理print '返回的结果是:' + str(@re)--完成后释放 exec sp_OADestroy @objreturnlberr: exec sp_oageterrorinfo 0,@src out,@desc out select cast(@err as varbinary(4)) as 错误号 ,@src as 错误源,@desc as 错误描述
我的SQL是2000,DLL是用CBC写的,不知可不可以使用
一下实例都来自sqlserver2000 online book。 使用 CLSID创建对象 下面的示例通过使用 SQL-DMO SQLServer 对象的 CLSID 创建该对象。DECLARE @object int DECLARE @hr int DECLARE @src varchar(255), @desc varchar(255) EXEC @hr = sp_OACreate '{00026BA1-0000-0000-C000-000000000046}', @object OUT IF @hr <> 0 BEGIN EXEC sp_OAGetErrorInfo @object, @src OUT, @desc OUT SELECT hr=convert(varbinary(4),@hr), Source=@src, Description=@desc RETURN END释放对象 EXEC @hr = sp_OADestroy @object IF @hr <> 0 BEGIN EXEC sp_OAGetErrorInfo @object RETURN END调用 OLE 对象的方法 EXEC @hr = sp_OAMethod @object, 'Connect', NULL, 'my_server', 'my_login', 'my_password' IF @hr <> 0 BEGIN EXEC sp_OAGetErrorInfo @object RETURN END 获取属性 DECLARE @property varchar(255) EXEC @hr = sp_OAMethod @object, 'HostName', @property OUT IF @hr <> 0 BEGIN EXEC sp_OAGetErrorInfo @object RETURN END PRINT @property将 OLE 对象的属性设置为新值。 EXEC @hr = sp_OASetProperty @object, 'HostName', 'Gizmo' IF @hr <> 0 BEGIN EXEC sp_OAGetErrorInfo @object RETURN END获取 OLE 对象的属性值。A. 使用局部变量 下面的示例获取 HostName 属性(属于先前创建的 SQLServer 对象)并将其存储在局部变量中。DECLARE @property varchar(255) EXEC @hr = sp_OAGetProperty @object, 'HostName', @property OUT IF @hr <> 0 BEGIN EXEC sp_OAGetErrorInfo @object RETURN END PRINT @propertyB. 使用结果集 下面的示例获取 HostName 属性(属于先前创建的 SQLServer 对象)并将其作为结果集返回给客户端。EXEC @hr = sp_OAGetProperty @object, 'HostName' IF @hr <> 0 BEGIN EXEC sp_OAGetErrorInfo @object RETURN END
/*--下面的部分在VB中完成首先我们先用VB 作一个最简单的组件工程名称: testSQLCOM
类名: TestMath'函数,计算两个整数相加的结果
Public Function AddMe(a As Long, b As Long) As Long
AddMe = a + b
End Function编译生成后,我们就可以在 Sql Server 中对这个 Com 组件进行调用了
--*//*--下面是SQL中对上面DLL的调用--*/--定义用到的变量
declare @err int,@src varchar(255),@desc varchar(255)
declare @obj int,@re int--创建调用实例
exec @err=sp_OACreate 'testSQLCOM.TestMath', @obj out
if @err<>0 goto lberr --如果创建失败,则进行错误处理--调用DLL中的函数
exec @err=sp_OAMethod @obj,'AddMe',@re out,100,200
if @err<>0 goto lberr --如果调用错误,则进行错误处理print '返回的结果是:' + str(@re)--完成后释放
exec sp_OADestroy @objreturnlberr:
exec sp_oageterrorinfo 0,@src out,@desc out
select cast(@err as varbinary(4)) as 错误号
,@src as 错误源,@desc as 错误描述
使用 CLSID创建对象
下面的示例通过使用 SQL-DMO SQLServer 对象的 CLSID 创建该对象。DECLARE @object int
DECLARE @hr int
DECLARE @src varchar(255), @desc varchar(255)
EXEC @hr = sp_OACreate '{00026BA1-0000-0000-C000-000000000046}',
@object OUT
IF @hr <> 0
BEGIN
EXEC sp_OAGetErrorInfo @object, @src OUT, @desc OUT
SELECT hr=convert(varbinary(4),@hr), Source=@src, Description=@desc
RETURN
END释放对象
EXEC @hr = sp_OADestroy @object
IF @hr <> 0
BEGIN
EXEC sp_OAGetErrorInfo @object
RETURN
END调用 OLE 对象的方法
EXEC @hr = sp_OAMethod @object, 'Connect', NULL, 'my_server',
'my_login', 'my_password'
IF @hr <> 0
BEGIN
EXEC sp_OAGetErrorInfo @object
RETURN
END
获取属性
DECLARE @property varchar(255)
EXEC @hr = sp_OAMethod @object, 'HostName', @property OUT
IF @hr <> 0
BEGIN
EXEC sp_OAGetErrorInfo @object
RETURN
END
PRINT @property将 OLE 对象的属性设置为新值。
EXEC @hr = sp_OASetProperty @object, 'HostName', 'Gizmo'
IF @hr <> 0
BEGIN
EXEC sp_OAGetErrorInfo @object
RETURN
END获取 OLE 对象的属性值。A. 使用局部变量
下面的示例获取 HostName 属性(属于先前创建的 SQLServer 对象)并将其存储在局部变量中。DECLARE @property varchar(255)
EXEC @hr = sp_OAGetProperty @object, 'HostName', @property OUT
IF @hr <> 0
BEGIN
EXEC sp_OAGetErrorInfo @object
RETURN
END
PRINT @propertyB. 使用结果集
下面的示例获取 HostName 属性(属于先前创建的 SQLServer 对象)并将其作为结果集返回给客户端。EXEC @hr = sp_OAGetProperty @object, 'HostName'
IF @hr <> 0
BEGIN
EXEC sp_OAGetErrorInfo @object
RETURN
END
#include <stdafx.h>
#include <stdlib.h>
#include <time.h>#define XP_NOERROR 0
#define XP_ERROR 1
#define MAXCOLNAME 25
#define MAXNAME 25
#define MAXTEXT 255#ifdef __cplusplus
extern "C" {
#endif#ifdef _WIN32
#include <winsock.h>
#else
#include <errno.h>
#endif#if defined(_MSC_VER)
# pragma comment(lib,"wsock32.lib")
#elif defined(__BORLANDC__)
# pragma comment(lib,"mswsock.lib")
#endif#pragma pack(1)
enum
{
LOCAL_USER =0,
OUTSIDE_USER =1,
FOREIGN_USER =2,
///////////////
NET_ABIS_PACKET =3,
NET_HLR_PACKET =4,
NET_A_PACKET =5,
NET_SMS_SUBMIT_PACKET =7,//add 2002-9-29
NET_SMS_DELIEVER_PACKET =8,//add 2002-9-29
SS7_STAT_PACKET =9,
NET_QUERY_VLR_PACKET = 10,
};//Define User Type & Packet Type
typedef struct
{
unsigned int msisdn;//
unsigned int cgi;//
unsigned char updatetype;//
int time;//时间
unsigned char sch;// }VLR_DATA; typedef struct
{
__int64 imsi;
__int64 msisdn;//8613XXXXXXXXX
unsigned char sch;//UserType;
unsigned int msc;
// int sch;
}NET_HLR_DATA; typedef struct
{
__int64 imsi;
__int64 msisdn;
}NET_QUERY_VLR;
typedef struct
{
__int64 imsi;//卡号
VLR_DATA vlrdata;//直取VLR数据
}NET_QUERY_VLR_RESP;//查询返回数据如果返回的数据全为0 则表标 查询失败
//网络上所有数据包
typedef struct
{
unsigned short PacketLen;
unsigned short PacketType;
union
{
NET_QUERY_VLR queryvlr;
NET_HLR_DATA hlrdata;
NET_QUERY_VLR_RESP queryvlrresp;
};
}NET_DATA;
#pragma pack()SOCKET sd_client = 0;
BOOL g_bInitSocket = false;
char szFileName[MAX_PATH+1];
//互斥
CRITICAL_SECTION g_csec;
BOOL g_bcs = false;
int InitMySocket();
void CloseMySocket();RETCODE __declspec(dllexport) xp_GetCurLocation(SRV_PROC *srvproc);
RETCODE __declspec(dllexport) xp_RegistUser(SRV_PROC *srvproc);#ifdef __cplusplus
}
#endifvoid InitCS()
{
if (!g_bcs)
InitializeCriticalSection( &g_csec);
g_bcs = true;
}
void DeleteCS()
{
if (g_bcs)
DeleteCriticalSection( &g_csec);
g_bcs = false;
}
int InitMySocket()
{
int iErr; u_short iPort;
struct sockaddr_in addr_srv;
char pszFileName[MAX_PATH]; //= "c:\\winnt\\StorProc.ini";
GetWindowsDirectory(pszFileName,MAX_PATH);
strcat(pszFileName,"\\StorProc.ini");
char pszHost[20];
GetPrivateProfileString("net","ip","192.168.0.201",pszHost,16,pszFileName);
iPort = GetPrivateProfileInt(
"net",
"port",
8080,
pszFileName
); WSADATA wsaData;
WORD wVersionRequested; wVersionRequested = MAKEWORD( 1,1 );
iErr = WSAStartup( wVersionRequested, &wsaData );
if ( iErr != 0 ) {
//WriteInfo("Error: Winsock not available\n" + iErr);
return 1;
}else g_bInitSocket = true; sd_client = socket(PF_INET, SOCK_STREAM, 0);
if (sd_client == INVALID_SOCKET)
{
//WriteInfo("没有更多的socket资源");
return 1;
}
addr_srv.sin_family = PF_INET;
addr_srv.sin_addr.S_un.S_addr = inet_addr(pszHost);
addr_srv.sin_port = htons(iPort); TIMEVAL timeout;
FD_SET fdset;
timeout.tv_sec = 2;
timeout.tv_usec= 0;
FD_ZERO( &fdset);
FD_SET ( sd_client, &fdset);
iErr = select(
0,
NULL,
&fdset,
NULL,
&timeout); iErr = connect(sd_client, (struct sockaddr *) &addr_srv,
sizeof(addr_srv));
if (iErr == INVALID_SOCKET)
{
return 1;
}
else
{
return 0;
}
}
{
closesocket(sd_client);
if (g_bInitSocket)
WSACleanup();
sd_client=0;
}
RETCODE __declspec(dllexport) xp_RegistUser(SRV_PROC* pSrvProc)
{
RETCODE nRet = XP_NOERROR;
int iErrCode = 0;
bool bEnterCS = false;
int nSizeQ;
unsigned char szFlag;
char szMsisdn[14];
BYTE bType;
unsigned long cbMaxLen;
unsigned long cbActualLen;
BOOL fNull; NET_DATA nData; memset(&nData,0,sizeof(nData));
memset(szMsisdn,0,14); int paramCount = srv_rpcparams(pSrvProc);
if (paramCount != 4)
{
return XP_ERROR;
}
if (sd_client == 0)
{
if (InitMySocket() )
{// 101:网络错误
iErrCode = 101;
sd_client = 0;
goto ERR_TAB;
}
}
nSizeQ = sizeof(NET_HLR_DATA)+4;
int ret = srv_paraminfo(pSrvProc, 1, &bType, &cbMaxLen, &cbActualLen,
NULL, &fNull); if (cbActualLen){
int err; /////////////////////////////////
nData.PacketLen = nSizeQ;
nData.PacketType = NET_HLR_PACKET;
memcpy(szMsisdn, srv_paramdata(pSrvProc, 1), cbActualLen);
ret = srv_paraminfo(pSrvProc, 2, &bType, &cbMaxLen, &cbActualLen,
NULL, &fNull);
memcpy(&nData.hlrdata.imsi,srv_paramdata(pSrvProc, 2),cbActualLen);
ret = srv_paraminfo(pSrvProc, 3, &bType, &cbMaxLen, &cbActualLen,
NULL, &fNull);
memcpy(&szFlag, srv_paramdata(pSrvProc, 3), cbActualLen);
//nData.hlrdata.imsi = 0;
nData.hlrdata.msc = 0;
//if (szFlag == 1) nData.hlrdata.sch = 0x11;
//if (szFlag == 0) nData.hlrdata.sch = 0x10;
nData.hlrdata.sch = szFlag;
nData.hlrdata.msisdn = _atoi64(szMsisdn); /////////////////////////////////
InitCS();//初始化临界区
EnterCriticalSection( &g_csec);//开始进行临界区
bEnterCS = true;
err = send (sd_client, (char *)&nData, nSizeQ, 0);
if (err!=nSizeQ)
{
CloseMySocket();
iErrCode = 102;
goto ERR_TAB;
}
}
else {
return XP_ERROR;
} ERR_TAB:
if (bEnterCS) LeaveCriticalSection( &g_csec);//离开临界区,注意在return之前一定要调用 否则下一次永远不会进入临界区
srv_paramsetoutput(pSrvProc,4,(BYTE *)&iErrCode,4,FALSE);
return XP_NOERROR;
}RETCODE __declspec(dllexport) xp_GetCurLocation(SRV_PROC* pSrvProc)
{
RETCODE nRet = XP_NOERROR;
int iErrCode = 0;
bool bEnterCS = false; TIMEVAL timeout;
FD_SET fdset;
timeout.tv_sec = 2;
timeout.tv_usec= 0;
int nSizeQ,nSizeR;
char szMsisdn[14];
BYTE bType;
unsigned long cbMaxLen;
unsigned long cbActualLen;
BOOL fNull; char szImsi[20];
char sTime[20]; int iLac,iCi;
iLac = 0;
iCi = 0; NET_DATA nData;
NET_DATA rData; memset(&rData,0,sizeof(rData));
memset(szMsisdn,0,14);
memset(sTime,0,20);
int paramCount = srv_rpcparams(pSrvProc);
if (paramCount != 8)
{
return XP_ERROR;
}
if (sd_client == 0)
{
if (InitMySocket() )
{// 101:网络错误
iErrCode = 101;
sd_client = 0;
goto ERR_TAB;
}
} nSizeQ = sizeof(NET_QUERY_VLR)+4;
nSizeR = sizeof(NET_QUERY_VLR_RESP)+4; int ret = srv_paraminfo(pSrvProc, 1, &bType, &cbMaxLen, &cbActualLen,
NULL, &fNull);
if (cbActualLen){
int err; /////////////////////////////////
nData.PacketLen = nSizeQ;
nData.PacketType = NET_QUERY_VLR_PACKET;
memcpy(szMsisdn, srv_paramdata(pSrvProc, 1), cbActualLen);
nData.queryvlr.msisdn = _atoi64(szMsisdn);
nData.queryvlr.imsi = 0;
/////////////////////////////////
InitCS();//初始化临界区
EnterCriticalSection( &g_csec);//开始进行临界区
bEnterCS = true;
err = send (sd_client, (char *)&nData, nSizeQ, 0);
if (err!=nSizeQ)
{
CloseMySocket();
iErrCode = 102;
goto ERR_TAB;
} FD_ZERO( &fdset);
FD_SET ( sd_client, &fdset); err = select(
0,
&fdset,
NULL,
NULL,
&timeout);
if( err != 1)
nRet = XP_ERROR;
err = recv( sd_client, (char*)&rData, nSizeR, 0);
if(err < nSizeR)
{
CloseMySocket();
iErrCode = 103;
goto ERR_TAB;
}
// 测试值
//rData.queryvlrresp.imsi = 460001234567890;
//rData.queryvlrresp.vlrdata.cgi = 1;
//rData.queryvlrresp.vlrdata.time = time(NULL);
//rData.queryvlrresp.vlrdata.updatetype=49;
//////////////////////////////////
_i64toa(rData.queryvlrresp.imsi,szImsi,10);
struct tm *now;
now = localtime( (long *)&rData.queryvlrresp.vlrdata.time);
sprintf(sTime ,"%04d-%02d-%02d %02d:%02d:%02d",
now->tm_year+1900,
now->tm_mon + 1,
now->tm_mday,
now->tm_hour,
now->tm_min,
now->tm_sec);
//转换成lac与ci
iLac = rData.queryvlrresp.vlrdata.cgi>>16;
iCi = rData.queryvlrresp.vlrdata.cgi & 0xffff;
}
else {
return XP_ERROR;
}ERR_TAB:
if (bEnterCS) LeaveCriticalSection( &g_csec);//离开临界区,注意在return之前一定要调用 否则下一次永远不会进入临界区
srv_paramsetoutput(pSrvProc,2,(BYTE *)szImsi,15,FALSE);
srv_paramsetoutput(pSrvProc,3,(BYTE *)&(iLac),4,FALSE);
srv_paramsetoutput(pSrvProc,4,(BYTE *)&(iCi),4,FALSE);
srv_paramsetoutput(pSrvProc,5,(BYTE *)&(rData.queryvlrresp.vlrdata.updatetype),1,FALSE);
srv_paramsetoutput(pSrvProc,6,(BYTE *)&sTime,19,FALSE);
srv_paramsetoutput(pSrvProc,7,(BYTE *)&iErrCode,4,FALSE);
srv_paramsetoutput(pSrvProc,8,(BYTE *)&(rData.queryvlrresp.vlrdata.sch),1,FALSE);
return XP_NOERROR;}
2> 在里面写好你的函数,编译
3> 把生成好的dll拷贝至 MSSQL/Binn 目录
4> 使用exec sp_addextendedproc 'xp_example', 'xp_example.dll'
其中'xp_example'是你调用的存储过程名字,'xp_example.dll'是dll的名字
5> 最后执行,exec xp_example
用ole也可以,通过共享内存或命名管道调用.不过前提都是要声明一个系统扩展存储过程.你去SQL server 2000帮助那里找 系统扩展存储过程 的例子就明白了.