158 lines
2.9 KiB
C++
158 lines
2.9 KiB
C++
#include"ADOConn.h"
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#include<iostream>
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ADOConn::ADOConn(void)
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{
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}
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ADOConn::~ADOConn(void)
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{
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}
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void ADOConn::OnInitADOConn(_bstr_t add)
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{
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//初始化ole/com库环境
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::CoInitialize(NULL);
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try
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{
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//创建connection对象
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m_pConnection.CreateInstance("ADODB.Connection");
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add1 = add;
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_bstr_t FileName = add;//".\\AllData.mdb"
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_bstr_t strConnect = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + FileName;
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m_pConnection->Open(strConnect, "", "", adModeUnknown);
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//m_pConnection.CreateInstance("ADODB.Connection");
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////设置连接字符串
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//m_pConnection->Open("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=lolic.accdb;Persist Security Info=False ", "", "", adModeUnknown);
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//设置连接字符串
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}
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//捕捉异常
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catch (_com_error e)
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{
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//显示错误信息
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cout << e.Description() << endl;
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}
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}
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void ADOConn::ExitConnect(void)
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{
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//关闭记录集和连接
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if (m_pRecordset != NULL)
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m_pRecordset->Close();
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m_pConnection->Close();
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//释放环境
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::CoUninitialize();
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}
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void ADOConn::GetRecordSet(_bstr_t bstrSql, int c)
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{
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try
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{
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if (!Query((_bstr_t)bstrSql))
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{
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//执行失败，返回错误
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cout << "错误！！！\n" << endl;
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return ;
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}
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//连接数据库，如果connection是空，则重新连接数据库
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if (m_pConnection == NULL)
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OnInitADOConn(add1);
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//创建记录对象
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m_pRecordset.CreateInstance(__uuidof(Recordset));
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//取得表中的记录
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m_pRecordset->Open(bstrSql, m_pConnection.GetInterfacePtr(), adOpenDynamic,
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adLockOptimistic, adCmdText);
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}
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catch (_com_error e)
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{
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cout << e.Description() << endl;
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}
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search = m_pRecordset;//返回记录集
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}
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bool ADOConn::Query(_bstr_t bstrSQL)
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{
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try
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{
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//链接数据库，如果connection对象空，则重新链接数据库
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if (m_pConnection == NULL)
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OnInitADOConn(add1);
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//创建记录集对象
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m_pRecordset.CreateInstance(_uuidof(Recordset));
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//取得标准记录
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m_pRecordset->Open(bstrSQL, m_pConnection.GetInterfacePtr(), adOpenDynamic, adLockOptimistic, adCmdText);
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return true;
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}
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catch (_com_error e)
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{
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return false;
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}
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}
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string ADOConn::search_RES(_variant_t resid)
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{
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_bstr_t strRecord;
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string c;
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while (!search->adoEOF)
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{
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strRecord = (LPCTSTR)(_bstr_t)m_pRecordset->GetCollect(resid);
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c = (string)strRecord;
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}
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return c;
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}
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_RecordsetPtr ADOConn::GetRecordSet(_bstr_t bstrSql)
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{
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try
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{
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//连接数据库，如果connection是空，则重新连接数据库
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if (m_pConnection == NULL)
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OnInitADOConn(add1);
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//创建记录对象
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m_pRecordset.CreateInstance(__uuidof(Recordset));
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//取得表中的记录
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m_pRecordset->Open(bstrSql, m_pConnection.GetInterfacePtr(), adOpenDynamic,
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adLockOptimistic, adCmdText);
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}
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catch (_com_error e)
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{
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cout << e.Description() << endl;
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}
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//返回记录集
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return m_pRecordset;
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}
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bool ADOConn::ExecuteSQL(_bstr_t bstrSql)
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{
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_variant_t recordsAffected;
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try
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{
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//数据库是否已连接
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if (m_pConnection == NULL)
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OnInitADOConn(add1);
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m_pConnection->Execute(bstrSql, NULL, adCmdText);
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return true;
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}
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catch (_com_error e)
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{
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cout << e.Description() << endl;
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return false;
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}
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return false;
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}
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