ASP在线操作数据库的通用类

代码如下:

<% Class RLManDBCls Private sDBPath, RLConn, sDBType, sServerName, sUserName, sPassword Public Count Private Sub Class_Initialize() sDBType = "" End Sub Private Sub Class_Terminate() If IsObject(RlConn) Then RlConn.Close Set RlConn = Nothing End if End Sub Public Property Let DBType(ByVal strVar) sDBType = strVar End Property Public Property Let ServerName(ByVal strVar) sServerName = strVar End Property Public Property Let UserName(ByVal strVar) sUserName = strVar End Property Public Property Let Password(ByVal strVar) sPassword = strVar End Property '设置数据库路径 Public Property Let DBPath(ByVal strVar) sDBPath = strVar Select Case sDBType Case "SQL" StrServer = sServerName '数据库服务器名 StrUid = sUserName '您的登录帐号 StrSaPwd = sPassword '您的登录密码 StrDbName = sDBPath '您的数据库名称 sDBPath = "driver={SQL server};server=" & StrServer & ";uid=" & StrUid & ";pwd=" & StrSaPwd & ";database=" & StrDbName Case "ACCESS","" sDBPath = "Provider = Microsoft.Jet.OLEDB.4.0;Data Source = " & Server.MapPath(sDBPath) End Select CheckData RLConn,sDbPath End Property '检查数据库链接，（变量名，连接字串） Private Sub CheckData(DataConn,ConnStr) On Error Resume Next Set DataConn = Server.CreateObject("ADODB.Connection") DataConn.Open ConnStr If Err Then Err.Clear Set DataConn = Nothing ErrMsg("数据库连接出错:" & Replace(ConnStr,"\","\\") & "，\n请检查连接字串，确认您输入的数据库信息是否正确。") Response.End End If End Sub '检查表是否存在 Function CheckTable(TableName) On Error Resume Next RLConn.Execute("select * From " & TableName) If Err.Number <> 0 Then Err.Clear() Call ErrMsg("错误提示：" & Err.Description) CheckTable = False Else CheckTable = True End If End Function '错误提示信息（消息） Private Sub ErrMsg(msg) Response.Write msg Response.Flush End Sub '---------------------------------------字段值的操作----------------------------------------------- '修改字段的值 Public Sub upColumn(ByVal TableName, ByVal ColumnName, ByVal ValueText,ByVal WhereStr) On Error Resume Next If WhereStr <> "" Then If InStr(WhereStr,"Where ")<=0 Then WhereStr = "Where " & WhereStr End if Else WhereStr = "" End if RLConn.Execute("update " & TableName & " set " & ColumnName & "=" & ValueText & " " & WhereStr) If Err.Number <> 0 Then Call ErrMsg("错误提示：" & Err.Description) Err.Clear() End If End Sub '执行SQL语句 Public Sub Execute(StrSql) Set RsCount=Server.CreateObject("ADODB.RecordSet") On Error Resume Next RsCount = RLConn.Execute(StrSql) If Left(StrSql,12) = "Select Count" Then Count = RsCount(0) If Err.Number <> 0 Then Call ErrMsg("错误提示：" & Err.Description) Err.Clear() End If RsCount.Close Set RsCount = Nothing End Sub '---------------------------------------索引(Index),视图（View）,主键操作----------------------------------------------- '添加字段索引 Public Function AddIndex(ByVal TableName, ByVal IndexName, ByVal ValueText) On Error Resume Next RLConn.Execute("CREATE INDEX " & IndexName & " ON [" & TableName & "]([" & ValueText & "])") If Err.Number <> 0 Then Call ErrMsg ("在 " & TableName & " 表新建" & IndexName & "索引错误，原因" & Err.Description & "请手工修改该索引。") Err.Clear() AddIndex = False Else AddIndex = True End If End Function '删除表索引 Public Function DelIndex(ByVal TableName, ByVal IndexName) On Error Resume Next RLConn.Execute("drop空格INDEX [" & TableName & "]." & IndexName) If Err.Number <> 0 Then Call ErrMsg ("在 " & TableName & " 表删除" & IndexName & "索引错误，原因" & Err.Description & "请手工删除该索引。") Err.Clear() DelIndex = False Else DelIndex = True End If End Function '更改表TableName的定义把字段ColumnName设为主键 Public Function AddPRIMARYKEY(ByVal TableName, ByVal ColumnName) On Error Resume Next TableName = Replace(Replace(TableName,"[",""),"]","") RLConn.Execute("ALTER TABLE "& TableName & " ADD CONSTRAINT PK_"&TableName&" PRIMARY KEY (" & ColumnName & ")") If Err.Number <> 0 Then Call ErrMsg ("在 " & TableName & " 将字段" & ColumnName & " 添加为主键时出错，原因 " & Err.Description & "请手工修改该字段属性。") Err.Clear() AddPRIMARYKEY = False Else AddPRIMARYKEY = True End If End Function '更改表TableName的定义把字段ColumnName主键的定义删除 Public Function DelPRIMARYKEY(ByVal TableName, ByVal ColumnName) On Error Resume Next RLConn.Execute("ALTER TABLE "& TableName & " drop空格PRIMARY KEY (" & ColumnName & ")") If Err.Number <> 0 Then Call ErrMsg ("在 " & TableName & " 将字段" & ColumnName & " 主键的定义删除时出错，原因" & Err.Description & "请手工修改该字段属性。") Err.Clear() DelPRIMARYKEY = False Else DelPRIMARYKEY = True End If End Function '检查主键是否存在，返回该表的主键名 Function GetPrimaryKey(TableName) on error Resume Next Dim RsPrimary GetPrimaryKey = "" Set RsPrimary = RLConn.OpenSchema(28,Array(Empty,Empty,TableName)) If Not RsPrimary.Eof Then GetPrimaryKey = RsPrimary("COLUMN_NAME") Set RsPrimary = Nothing If Err.Number <> 0 Then Call ErrMsg("数据库不支持检测数据表 " & TableName & " 的主键。原因 ：" & Err.Description) Err.Clear() End If End Function '---------------------------------------表结构操作----------------------------------------------- '添加新字段 Public Function AddColumn(TableName,ColumnName,ColumnType) On Error Resume Next RLConn.Execute("Alter Table [" & TableName & "] Add [" & ColumnName & "] " & ColumnType & "") If Err Then ErrMsg ("新建 " & TableName & " 表中字段错误，请手动将数据库中 <B>" & ColumnName & "</B> 字段建立，属性为 <B>"&ColumnType& "</B>，原因" & Err.Description) Err.Clear AddColumn = False Else AddColumn = True End If End Function '更改字段通用函数 Public Function ModColumn(TableName,ColumnName,ColumnType) On Error Resume Next RLConn.Execute("Alter Table [" & TableName & "] Alter Column [" & ColumnName & "] " & ColumnType & "") If Err Then Call ErrMsg ("更改 " & TableName & " 表中字段属性错误，请手动将数据库中 <B>" & ColumnName & "</B> 字段更改为 <B>" & ColumnType & "</B> 属性，原因" & Err.Description) Err.Clear ModColumn = False Else ModColumn = True End If End Function '删除字段通用函数 Public Function DelColumn(TableName,ColumnName) On Error Resume Next If sDBType = "SQL" THen RLConn.Execute("Alter Table [" & TableName & "] drop空格Column [" & ColumnName & "]") Else RLConn.Execute("Alter Table [" & TableName & "] drop空格[" & ColumnName & "]") End if If Err Then Call ErrMsg ("删除 " & TableName & " 表中字段错误，请手动将数据库中 <B>" & ColumnName & "</B> 字段删除，原因" & Err.Description) Err.Clear DelColumn = False Else DelColumn = True End If End Function '---------------------------------------表操作--------------------------------------------------- '打开表名对象 Private Sub ReNameTableConn() On Error Resume Next Set objADOXDatabase = Server.CreateObject("ADOX.Catalog") objADOXDatabase.ActiveConnection = ConnStr If Err Then ErrMsg("建立更改表名对象出错，您所要升级的空间不支持此对象，您很可能需要手动更改表名，原因" & Err.Description) Response.End Err.Clear End If End Sub '关闭表名对象 Private Sub CloseReNameTableConn() Set objADOXDatabase = Nothing Conn.Close Set Conn=Nothing End Sub '更改数据库表名，入口参数：老表名、新表名 Public Function RenameTable(oldName, newName) On Error Resume Next Call ReNameTableConn objADOXDatabase.Tables(oldName).Name = newName If Err Then Call ErrMsg ("更改表名错误，请手动将数据库中 <B>" & oldName & "</B> 表名更改为 < B>" & newName & "</B>，原因" & Err.Description) Err.Clear RenameTable = False Else RenameTable = True End If Call CloseReNameTableConn End Function '删除表通用函数 Public Function DelTable(TableName) On Error Resume Next RLConn.Execute("drop空格Table [" & TableName & "]") If Err Then ErrMsg ("删除 " & TableName & " 表错误，请手动将数据库中 <B>" & TableName&"</B> 表删除，原因" & Err.Description) Err.Clear DelTable = False Else DelTable = True End If End Function '建立新表 Public Function CreateTable(ByVal TableName,ByVal FieldList) Dim StrSql If sDBType = "SQL" THen StrSql = "CREATE TABLE [" & TableName & "]( " & FieldList & ")" Else StrSql = "CREATE TABLE [" & TableName & "]" End if RLConn.Execute(StrSql) If Err.Number <> 0 Then Call ErrMsg("新建 " & TableName & " 表错误，原因" & Err.Description & "") Err.Clear() CreateTable = False Else CreateTable = True End If End Function '---------------------------------------数据库操作----------------------------------------------- '建立数据库文件 Public function CreateDBfile(byVal dbFileName,byVal SavePath) On error resume Next SavePath = Replace(SavePath,"/","\") If Right(SavePath,1)<>"\" Or Right(SavePath,1)<>"/" Then SavePath = Trim(SavePath) & "\" If Left(dbFileName,1)="\" Or Left(dbFileName,1)="/" Then dbFileName = Trim(Mid(dbFileName,2,Len(dbFileName))) If DbExists(AppPath() & SavePath & dbFileName) Then ErrMsg("对不起，该数据库已经存在!" & AppPath() & SavePath & dbFileName) CreateDBfile = False Else Response.Write AppPath() & SavePath & dbFileName Dim Ca Set Ca = Server.CreateObject("ADOX.Catalog") If Err.number<>0 Then ErrMsg("无法建立，请检查错误信息<br>" & Err.number & "<br>" & Err.Description) Err.Clear CreateDBfile = False Exit function End If call Ca.Create("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & AppPath() & SavePath & dbFileName) Set Ca = Nothing CreateDBfile = True End If End function '查找数据库文件是否存在 Private function DbExists(byVal dbPath) On Error resume Next Dim c Set c = Server.CreateObject("ADODB.Connection") c.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & dbPath If Err.number<>0 Then Err.Clear DbExists = false else DbExists = True End If set c = nothing End function '取当前真实路径 Private function AppPath() AppPath = Server.MapPath("./") If Right(AppPath,1) = "\" THen AppPath = AppPath ELse AppPath = AppPath & "\" End if End function '删除一个数据库文件 Public function DeleteDBFile(filespec) filespec = AppPath() & filespec Dim fso Set fso = CreateObject("Scripting.FileSystemObject") If Err.number<>0 Then ErrMsg("删除文件发生错误!请查看错误信息：" & Err.number & " " & Err.Description & "<br>") Err.Clear DeleteDBFile = False End If If DbExists(filespec) THen call fso.DeleteFile(filespec) DeleteDBFile = True Else ErrMsg("删除文件发生错误!请查看错误信息:" & Err.number & " " & Err.Description & "<br>") DeleteDBFile = False Exit Function End if Set fso = Nothing End function '修改一个数据库名 Public function RenameDBFile(filespec1,filespec2) filespec1 = AppPath() & filespec1:filespec2 = AppPath() & filespec2 Dim fso Set fso = CreateObject("Scripting.FileSystemObject") If Err.number<>0 Then ErrMsg("修改文件名时发生错误!请查看错误信息:" & Err.number & " " & Err.Description) Err.Clear RenameDBFile = False End If If DbExists(filespec1) THen call fso.CopyFile(filespec1,filespec2,True) call fso.DeleteFile(filespec1) RenameDBFile = True Else ErrMsg("源文件不存在！！！") RenameDBFile = False Exit Function End if Set fso = Nothing End function '压缩数据库 Public Function CompactDBFile(strDBFileName) Dim Jet_Conn_Partial Dim SourceConn Dim DestConn Dim oJetEngine Dim oFSO Jet_Conn_Partial = "Provider=Microsoft.Jet.OLEDB.4.0; Data source=" SourceConn = Jet_Conn_Partial & AppPath() & strDBFileName DestConn = Jet_Conn_Partial & AppPath() & "Temp" & strDBFileName Set oFSO = Server.CreateObject("Scripting.FileSystemObject") Set oJetEngine = Server.CreateObject("JRO.JetEngine") With oFSO If Not .FileExists( AppPath() & strDBFileName) Then ErrMsg ("数据库文件未找到！！！！" ) Stop CompactDBFile = False Exit Function Else If .FileExists( AppPath() & "Temp" & strDBFileName) Then ErrMsg("不知道的错误！！！") .DeleteFile ( AppPath() & "Temp" & strDBFileName) CompactDBFile = False Exit Function End If End If End With With oJetEngine .CompactDatabase SourceConn, DestConn End With oFSO.DeleteFile AppPath() & strDBFileName oFSO.MoveFile AppPath() & "Temp" & strDBFileName,AppPath() & strDBFileName Set oFSO = Nothing Set oJetEngine = Nothing CompactDBFile = True End Function End Class Dim ManDb Set ManDb = New RLManDBCls '//---------连接SQL数据库-------------- 'ManDb.DBType = "SQL" 'ManDb.ServerName = "TAO-KUIZU" 'ManDb.UserName = "sa" 'ManDb.Password = "123456" 'ManDb.DBPath = "hhstuss" 'ManDb.CreateTable "cexo255","id int Not Null PRIMARY KEY, Name varchar(20) Not Null" '建立表（表名） 'ManDb.ReNameTable "cexo255","cexo2552" '表改名（旧表名，新表名）(用组件) 'ManDb.DelTable "cexo255" '删除表（表名） 'ManDb.AddColumn "cexo255", "Sex", "varchar(2) null" '建立表结构（表名，字段名，数据类型） 'ManDb.ModColumn "cexo255", "name", "int Not null" '修改表结构（表名，字段名，新数据类型）_ 'ManDb.DelColumn "cexo255", "Sex" '删除表结构（表名，字段名） 'ManDb.AddIndex "cexo255", "i_ID", "ID" '建立表索引（表名，索引名，索引字段名） 'ManDb.DelIndex "cexo255", "i_ID" '删除表索引（表名，索引名） 'ManDb.AddPRIMARYKEY "cexo255","name" '建立表主键（表名，主键字段名） 'ManDb.DelPRIMARYKEY "cexo255","name" '删除表主键（表名，主键字段名）_ 'Response.Write ManDb.GetPrimaryKey("cexo255") '取表的主键（表名） 'ManDb.upColumn "cexo255","id",12345,"name = 1" '修改字段的值 'ManDb.Execute "insert空格into cexo255(id,Name) values (2,2)" '添加记录 'ManDb.Execute "Update cexo255 Set id = 3 Where Name = 2" '修改记录 'ManDb.Execute "delete空格From cexo255 Where Name = 2" '删除记录 'ManDb.Execute("Select Count(*) From cexo255"):Response.Write ManDb.Count '统计记录个数 'If ManDb.CheckTable("StudInfo") THen Response.Write "StudInfo表存在！！！" Else Response.Write "StudInfo表不存在！！！" '//-----------End-------------------------- '//---------连接Access数据库-------------- ManDb.DBType = "ACCESS" ManDb.DBPath = "test.mdb" 'ManDb.CreateDBfile "test2.mdb","" '建立数据库（数据库名，保存路径） 'ManDb.DeleteDBFile("test2.mdb") '删除数据库（数据库名） 'ManDb.RenameDBFile "test2.mdb","test3.mdb" '数据库改名（旧数据库名，新数据库名） 'ManDb.CompactDBFile("test3.mdb") '压缩数据库（数据库名） 'ManDb.CreateTable "dw","" '建立表（表名） 'ManDb.ReNameTable "dw","dw2" '表改名（旧表名，新表名）(用组件)_ 'ManDb.DelTable "dw" '删除表（表名） 'ManDb.AddColumn "cexo255", "name", "varchar(255) Not null" '建立表结构（表名，字段名，数据类型） 'ManDb.ModColumn "cexo255", "name", "int Not null" '修改表结构（表名，字段名，新数据类型） 'ManDb.DelColumn "cexo255", "name" '删除表结构（表名，字段名） 'ManDb.AddIndex "cexo255", "UserID", "ID" '建立表索引（表名，索引名，索引字段名） 'ManDb.DelIndex "cexo255", "UserID" '删除表索引（表名，索引名）_ 'ManDb.AddPRIMARYKEY "cexo255","id" '建立表主键（表名，主键字段名） 'ManDb.DelPRIMARYKEY "cexo255","id" '删除表主键（表名，主键字段名）_ 'Response.Write ManDb.GetPrimaryKey("cexo255") '取表的主键（表名） 'ManDb.upColumn "cexo255","id","12345","id = '12'" '修改字段的值 'ManDb.Execute "insert空格into cexo255(id) values ('789')" '添加记录 'ManDb.Execute "Update cexo255 Set id = 'wxf' Where id = '789'" '修改记录 'ManDb.Execute "delete空格From cexo255 Where id = 'wxf'" '删除记录 ManDb.Execute("Select Count(*) From cexo255"):Response.Write ManDb.Count '统计记录个数 'If ManDb.CheckTable("StudInfo") THen Response.Write "StudInfo表存在！！！" Else Response.Write "StudInfo表不存在！！！" '//-----------End-------------------------- Set ManDb = Nothing %>