开始通过PHP服务器端打印作业 [英] Starting serverside print job via PHP

问题描述

这是最有可能不容易的，但这里的情况是：

This is most likely not an easy one but here is the situation:

我写了一个C＃命令行应用程序，其中：

I have written a C# command line application which:

• 创建一个使用iTextSharp的一个PDF


• 将其写入到磁盘


• 使用 Acrord32.exe （这是Acrobat Reader软件），通过的System.Diagnostics.Process 以默默打印生成的PDF

• creates a PDF using ITextSharp
• writes it to disk
• uses Acrord32.exe (this is Acrobat Reader) via System.Diagnostics.Process in order to silently print the generated PDF

如果我建立我的解决方案，然后双击 pdfGen.exe ，它按预期工作。该PDF创建和打印。

If I build my solution and double click the pdfGen.exe, it works as expected. The PDF is created and printed.

现在，我的应用程序已被部署Windows Vista中运行的内部服务器上的IIS 7，该服务器有一些PHP Web应用程序的运行。它会通过PHP使用了shell_exec（）使生成的PDF将连接到服务器的打印机上进行打印。

Now, my app has to be deployed on a internal server with Windows Vista running IIS 7. This server has some PHP webapp running. And it will be called via PHP using shell_exec() so that the resulting PDF will be printed on the printer attached to the server.

所以我的PHP页面基本上是这样的：

So my PHP page looks basically like this:

shell_exec('/path/to/pdfGen.exe');

但在这里出问题。会发生什么事，根据任务管理器等是：

But here things go wrong. What happens is according to task manager etc.:

• pdfGen.exe 启动


• 创建PDF


• Acrord32.exe 启动


• pdfGen.exe 永远挂（也是如此的PHP脚本），并没有打印

• pdfGen.exe starts
• the PDF is created
• Acrord32.exe starts
• pdfGen.exe hangs forever (and so does the PHP script) and nothing is printed

我敢肯定这是一些的许可相关的问题的。我已经给了 IIS_IUSRS 访问默认打印机，到 Acrord32.exe 所在的目录。但结果还是没有打印。不过，如果我开始了我的pdfGen.exe手动它的作品。

I am pretty sure it is some permission related problem. I already gave IIS_IUSRS access to the default printer, and to the directory where Acrord32.exe is located. But still, no printing. However, if I start my pdfGen.exe manually it works.

任何想法，我缺少什么？

Any idea what I am missing?

编辑：

我不一定要使用Acrobat Reader软件，以打印PDF。如果有另一种方式，以默默的打印创建的PDF服务器端，我不会介意。

I am not bound to use Acrobat Reader in order to print the PDF. If there is another way in order to silently print the created PDF serverside, I would not mind at all.

推荐答案

感谢所有为您的意见。不幸的是这个PHP启动的PrintJob的事情是，今天取消了，因为，嗯......我不知道......政治原因，一个更大的项目的一部分。猜猜这个项目是非常死。

Thanks all for your comments. Unfortunately this "php start printjob" thing was part of a larger project that was cancelled today because of, well... I dont know... political reasons. Guess the project is pretty much dead.

不管怎样，我想我自己在最后的日子几次，不能让它在IIS下工作。我的解决方案，我实施和测试已经：删除IIS，与当地的Apache和PHP与的管理员访问权限运行安装XAMPP或WAMPP包。

Anyway, I tried myself a few more times in the last days and could not get it to work with IIS. My solution that I implemented and tested already: remove IIS, install a XAMPP or WAMPP package with a local apache and PHP that runs with admin access rights.

这做的伎俩。我用函数，pclose（popen这（'...命令'，'R'））; 在PHP以启动 .exe文件键，使PHP不等到PDF完成。这一切伟大的工作。

This did the trick. I used pclose(popen('...command...', 'r')); in PHP in order to start the .exe and so that PHP does not wait until the PDF is finished. It all worked great.

下面是开始使用Acrobat Reader软件打印作业我的C＃代码

Here is my C# code which starts the print job using Acrobat Reader

public void Print(string pathname, string acrobatDirectory)
{
    var proc = new Process
    {
        StartInfo =
        {
            Arguments               = String.Format("/t \"{0}\"", pathname),
            FileName                = acrobatDirectory,
            UseShellExecute         = false,
            CreateNoWindow          = true,
            RedirectStandardOutput  = false,
            RedirectStandardError   = false,
        }
    };

    proc.Start();  
}  

第一个参数是路径的PDF应打印，第二参数是对 AcroRd32.exe 。

剩下的唯一问题是绝对路径 AcroRd32.exe 开始，印刷和从未被再次关闭。所以每PrintJob的开始（我使用的Acrobat Reader 9.0） AcroRd32.exe 的新实例。所以，如果你印刷10次，10 Acrobat Reader软件创建实例。

The only problem left was that AcroRd32.exe was started, printed and never got closed again. So every printjob started a new instance of AcroRd32.exe (I am using Acrobat Reader 9.0). So if you printed 10 times, 10 acrobat reader instances were created.

我所做的就是启动打印作业，然后等待X秒，希望打印机已经完成，然后杀害所有 AcroRd32.exe 实例：

What I did was starting the print job, then waiting X seconds, hoping that the printer was finished and then killing all AcroRd32.exe instances:

public void Print(string pathname, string acrobatDirectory)
{
    Debug.WriteLine("Printing...");

    Printer.Print(pathname, acrobatDirectory);

    Thread.Sleep(30000);

    try
    {
        Debug.WriteLine("Trying to kill runnung AcroRd32.exe's ");

        FindAndKillProcess("AcroRd32");
    }
    catch (Exception)
    {
        Debug.WriteLine("AcroRd32.exe could not be killed...");
    }
}

private bool FindAndKillProcess(string name)
{
    foreach (Process clsProcess in Process.GetProcesses())
    {
        if (clsProcess.ProcessName.StartsWith(name))
        {
            clsProcess.Kill();
            return true;
        }
    }

    return false;
}

这结果很不错。

请注意，以上（全部遇难 AcroRd32.exe 并运行与管理privilegs PHP）仅为可行这是因为：整件事一次只能使用一个用户，拥有使用非常有限的区域

Note that the above (killing all AcroRd32.exe and running PHP with admin privilegs) was only doable because: The whole thing is only used by one user at a time and has a very limited area of use.

它应该被用来在部署在客户端POS触摸屏的应用程序。一位售货员将使用PHP应用程序，以配置产品，然后PHP将打电话给我的.exe这将创建并在后台打印PDF。然后打印的文档被传递给客户机。 所以安全性等是不是真的在这种情况下一个问题。

It should be used on a touchscreen application deployed at the clients POS. A salesman would use the PHP app in order to configure a product, and then PHP would call my .exe which would create and print a PDF in the background. The printed document is then handed to the client. So security etc. was not really a concern in this case.

如果有人为了与IIS使用一个解决方案，我仍愿意接受它作为一个答案。

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