如何使用 GhostScript 将 PDF 转换为 TIF？

Question

可能的重复：
将 pdf 文件转换为 tiff 文件的最佳方法 < /p>

我我正在寻找一个免费的库，它允许我将 PDF 文档转换为一个（或多个）TIFF 图像。如果 Tiff 不可行，也可以是其他图像格式。

我读到了有关使用 Ghostscript 执行此操作的方法，但我找不到很好的解释。那么有什么提示如何做到这一点吗？

编辑： 根据评论我使用这个命令执行：

Process.Start("gswin32c", "-dNOPAUSE -q -sDEVICE=tiffg4 -dBATCH -sOutputFile=" + fileName + ".tif " +  fileName + ".pdf");

我看到GhostScript是在命令行中执行的，但是我总是得到一个错误：

  System.ArgumentException was unhandled
  Message=The contact with id '16778241' does not currently exist.
Parameter name: contact
  Source=Microsoft.Surface.Presentation
  ParamName=contact
  StackTrace:
       at Microsoft.Surface.Presentation.Contacts.CheckIfCanBeCapturedOrReleased(Contact contact)
       at Microsoft.Surface.Presentation.Contacts.CaptureContact(Contact contact, IInputElement element)
       at Microsoft.Surface.Presentation.Controls.Primitives.ButtonBaseAdapter.OnContactDown(ContactEventArgs e)
       at Microsoft.Surface.Presentation.Controls.SurfaceButton.OnContactDown(ContactEventArgs e)
       at Microsoft.Surface.Presentation.Controls.SurfaceButton.Microsoft.Surface.Presentation.Controls.IContactEventThunk.OnContactDownThunk(ContactEventArgs e)
       at Microsoft.Surface.Presentation.Controls.InputElementAdapter.OnContactDownThunk(Object sender, ContactEventArgs e)
       at Microsoft.Surface.Presentation.ContactEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
       at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
       at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
       at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
       at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
       at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
       at System.Windows.Input.InputManager.ProcessStagingArea()
       at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
       at Microsoft.Surface.Presentation.InputSurfaceProviderBase.DoProcessInput(Object obj)
       at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
       at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
       at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
       at System.Windows.Threading.DispatcherOperation.InvokeImpl()
       at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)
       at System.Threading.ExecutionContext.runTryCode(Object userData)
       at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
       at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Windows.Threading.DispatcherOperation.Invoke()
       at System.Windows.Threading.Dispatcher.ProcessQueue()
       at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
       at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
       at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
       at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
       at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter)
       at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg)
       at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
       at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
       at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
       at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
       at System.Windows.Threading.Dispatcher.Run()
       at System.Windows.Application.RunDispatcher(Object ignore)
       at System.Windows.Application.RunInternal(Window window)
       at System.Windows.Application.Run(Window window)
       at System.Windows.Application.Run()
       at Prototype_Concept_2.App.Main() in C:\Users\Roflcoptr\Documents\Visual Studio 2008\Projects\Prototype_Concept_2\Prototype_Concept_2\obj\Debug\App.g.cs:line 0
       at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()

InnerException:

Why this?

Answer 1

您不能使用 Process.Start(string filename) 重载来提供命令行参数。来自 MSDN：

此重载不允许进程使用命令行参数。如果需要为进程指定一个或多个命令行参数，请使用 Process.Start(ProcessStartInfo) 或 Process.Start(String, String) 重载。
http://msdn.microsoft.com/en-us/library/53ezey2s.aspx

因此，请尝试以下操作：

Process.Start(@"C:\Users\Roflcoptr\Documents\Visual Studio 2008\Projects\Prototype_Concept_2\Prototype_Concept_2\bin\Debug\gswin32c", "-dNOPAUSE -q -g300x300 -sDEVICE=tiffg4 -dBATCH -sOutputFile=Report_22_02_2011_21_18.tif Report_22_02_2011_21_18.pdf");

Answer 2

您可以发布 Process.Start() 行代码吗？

我猜测找不到文件的错误是由于路径不正确造成的。缺少引号。由于 Visual 和 Studio 中的空间，它会假设“C:\Users\Roflcoptr\Documents\Visual”是目录。

Process.Start(@"\"C:\Users\Roflcoptr\Documents\Visual Studio 2008\Projects\Prototype_Concept_2\Prototype_Concept_2\bin\Debug\gswin32c\" -dNOPAUSE -q -g300x300 -sDEVICE=tiffg4 -dBATCH - sOutputFile=Report_22_02_2011_21_18.tif Report_22_02_2011_21_18.pdf");

测试这一点的最佳方法，也许首先启动命令提示符，看看在 Process.Start() 方法中使用它之前是否可以成功运行该命令行称呼。