WMI是一項行業推薦規范,旨在為訪問企業環境中的管理信息而開發一種標準化技術。該信息包括系統內存的狀態、當前安裝的客戶應用程序清單,以及有關客戶端狀態的其他數據。
WMI是可伸縮的系統管理結構,該規范采用一個統一、基于標準且可擴展的面向對象接口。它提供與系統管理員信息和基礎WMI API交互的標準方法,主要由系統管理應用程序開發人員和系統管理員用來訪問和操作系統管理信息。
WMI可用來生成組織和管理系統信息的工具,使系統管理人員能夠更密切的監視系統活動。
WMI提供了一套內置在Microsoft Windows操作系統中的豐富的系統管理服務,現在有大量的應用程序、服務和設備用其為信息技術操作和產品支持組織提供全方位的管理功能?;赪MI的管理系統的使用帶來了更可靠的計算環境和更高的系統可靠性,從而節省了企業的開銷。
WMI提供的大量的規范為許多高端應用程序,例如Microsoft Exchange、Microsoft SQL Server和Microsoft Internet信息服務(IIS)等實現如下管理任務。
1. 監視應用程序的運行情況
2. 檢測瓶頸或故障
3. 管理和配置應用程序
4. 查詢應用程序數據(使用對象關系的遍歷和查詢)
5. 執行無縫的本地或遠程管理操作
下面我們通過一個例子來說明WMI的強大功能。以vb6為列:
引用”Microsoft WMI Scripting V1.1 Library”
代碼如下:
Option ExplicitDim WithEvents Sink As SWbemSinkDim j As Integer'功能:利用wmi組件得到計算機的信息,每一個小功能分開寫,便于大家查閱 Private Sub cmdDone_Click()Dim oWMINameSpace As SWbemServicesDim oLogicalDiskSet As SWbemObjectSetDim oLogicalDisk As SWbemObject Dim ObjSet As VariantDim sDrive As StringDim sValue As StringDim dblSize As DoubleDim Obj As Variant Dim lIndex As Long Set oWMINameSpace = GetObject("winmgmts:") '得到驅動器的信息On Error Resume NextSet ObjSet = oWMINameSpace.InstancesOf("Win32_DiskDrive") For Each Obj In ObjSet List5.AddItem Obj.Caption & " - " & BytesToMegabytes(Obj.Size) & " GB"Next '得到每一個驅動器的詳細信息On Error GoTo ErrorHandler'Set oWMINameSpace = GetObject("winmgmts:")Set oLogicalDiskSet = oWMINameSpace.InstancesOf("Win32_LogicalDisk")For Each oLogicalDisk In oLogicalDiskSet On Error Resume Next sDrive = oLogicalDisk.deviceid ListView1.ListItems.Add , , sDrive lIndex = ListView1.ListItems.Count sValue = oLogicalDisk.Description & "" ListView1.ListItems(lIndex).SubItems(1) = sValue sValue = oLogicalDisk.FileSystem & "" ListView1.ListItems(lIndex).SubItems(2) = sValue sValue = oLogicalDisk.VolumeName & "" ListView1.ListItems(lIndex).SubItems(3) = sValue sValue = oLogicalDisk.VolumeSerialNumber & "" ListView1.ListItems(lIndex).SubItems(4) = sValue sValue = oLogicalDisk.Size & "" If IsNumeric(sValue) ThendblSize = BytesToMegabytes(CDbl(sValue))sValue = CStr(dblSize) & " MB" End If ListView1.ListItems(lIndex).SubItems(5) = sValueNext CleanUp:Set oLogicalDisk = NothingSet oLogicalDiskSet = NothingSet oWMINameSpace = NothingExit Sub ErrorHandler:MsgBox "" & Err.Description GoTo CleanUp End Sub Private Sub Command1_Click()Unload MeEnd Sub Private Function BytesToMegabytes(Bytes As Double) As Double Dim dblAns As Double dblAns = (Bytes / 1024) / 1024 BytesToMegabytes = Format(dblAns, "###,###,##0.00")End Function Private Sub Command2_Click()Dim oWMINameSpace As SWbemServicesDim SystemSet As VariantDim System As VariantDim ObjSet As VariantDim Obj As Variant Set oWMINameSpace = GetObject("winmgmts:")'操作系統Set SystemSet = oWMINameSpace.InstancesOf("Win32_OperatingSystem") For Each System In SystemSet List1.AddItem System.Caption List1.AddItem System.Manufacturer List1.AddItem System.BuildType & “” ‘Win9x下好像取不出來 List1.AddItem System.Version List1.AddItem System.SerialNumberNext'cpuSet ObjSet = oWMINameSpace.InstancesOf("Win32_Processor") For Each Obj In ObjSet List2.AddItem Obj.Caption List2.AddItem Obj.currentclockspeed & " Mhz"Next End Sub Private Sub Command3_Click()Dim oWMINameSpace As SWbemServicesDim ObjSet As VariantDim Obj As VariantDim Adapter As Variant '內存Set oWMINameSpace = GetObject("winmgmts:")Set ObjSet = oWMINameSpace.InstancesOf("Win32_PhysicalMemory")Dim i As String For Each Obj In ObjSet List3.AddItem BytesToMegabytes(Obj.capacity) & " MB" & " Chip"Next '網卡Set Sink = New SWbemSink Set Adapter = GetObject("winmgmts:")Adapter.InstancesOfAsync Sink, "Win32_NetworkAdapter" End Sub Private Sub Form_Load()j = 0End Sub Private Sub Sink_OnObjectReady(ByVal objWbemObject As WbemScripting.ISWbemObject, ByVal objWbemAsyncContext As WbemScripting.ISWbemNamedValueSet) Dim Adapter As Variant‘得到所有的適配器信息Set Adapter = GetObject("winmgmts:Win32_NetworkAdapterConfiguration=" & j & "") List4.AddItem Adapter.Description If IsNull(Adapter.MACAddress) Then List4.AddItem "No MAC Address" List4.AddItem ""Else List4.AddItem "Mac: " & Adapter.MACAddress List4.AddItem ""End If j = j + 1End Sub
這篇文章就介紹到這,更多的內容大家可以參考這篇文章:http://technet.microsoft.com/en-us/library/ee198932.aspx
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