Question

我正在编写我的第一个Powershell脚本并且来自C＃很困惑，我的代码如下：

function Run(
[string] $command,
[string] $args,
[Ref] [string] $stdout,
[Ref] [string] $stderr
)
{  
    $p1 = New-Object System.Diagnostics.Process
    $p1.StartInfo = New-Object System.Diagnostics.ProcessStartInfo;
    $p1.StartInfo.FileName = $command
    $p1.StartInfo.Arguments = $arguments
    $p1.StartInfo.CreateNoWindow = $true
    $p1.StartInfo.RedirectStandardError = $true
    $p1.StartInfo.RedirectStandardOutput = $true
    $p1.StartInfo.UseShellExecute = $false

    $p1.Start()
    $p1.WaitForExit()
}

$p = New-Object System.Diagnostics.Process
$p.StartInfo = New-Object System.Diagnostics.ProcessStartInfo;
$p.StartInfo.FileName = "ping"
$p.StartInfo.Arguments = "142.553.22242.2"
$p.StartInfo.CreateNoWindow = $true
$p.StartInfo.RedirectStandardError = $true
$p.StartInfo.RedirectStandardOutput = $true
$p.StartInfo.UseShellExecute = $false

$p.Start()
$p.WaitForExit()
$code = $p.ExitCode
$stderr = $p.StandardError.ReadToEnd()
$stdout = $p.StandardOutput.ReadToEnd()


Run("ping","208.67.222.222","","")

$ p.Start（）有效，但由于某种原因，传入Run函数的参数被忽略，$ p1失败。我做错了什么？

Exception calling "Start" with "0" argument(s): "The system cannot find the file specified"
At C:\Users\Administrator\Desktop\logtofile.ps1:27 char:5
+     $p1.Start()
+     ~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : Win32Exception

Exception calling "WaitForExit" with "0" argument(s): "No process is associated with this object."
At C:\Users\Administrator\Desktop\logtofile.ps1:28 char:5
+     $p1.WaitForExit()
+     ~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : InvalidOperationException

Answer 1

我没有尝试从函数内部启动一个进程，但是我得到了同样的错误。我花了几分钟才意识到这是我最喜欢的浪费时间之一：UAC陷阱。我没有使用＆＃34;以管理员身份运行＆＃34;来启动PowerShell。您必须具有管理员权限并运行代码才能启动/停止/修改您不拥有的进程，并且此错误消息在这方面完全没有帮助。

Answer 2

您必须按如下方式调用run：

Run "ping","208.67.222.222","",""

放入括号之间将其作为单个数组参数传递给函数。

Answer 3

class AboutView(TemplateView):
template_name = "about.html"


class PostListView(ListView):
    model = Post
    
    def get_queryset(self):
        return Post.objects.filter(publish_date__lte=timezone.now()).order_by('-publish_date')

class PostDetailView(DetailView):
    model = Post


class PostCreateView(LoginRequiredMixin,CreateView):
    login_url = '/login/'
    redirect_field_name = 'blogapp/post_detail.html'
    model = Post
    
    form_class = PostForm
    def get_queryset(self):
        

class PostUpdateView(LoginRequiredMixin, UpdateView):
    login_url = '/login/'
    redirect_field_name = 'blogapp/post_detail.html'
    model = Post
    
    form_class = PostForm


class PostDeleteView(LoginRequiredMixin, DeleteView):
    model = Post
    success_url = reverse_lazy('post_list')

class DraftListView(LoginRequiredMixin, ListView):
    login_url = '/login/'
    redirect_field_name = 'blog/post_list.html'
    model = Post
    
    def get_queryset(self):
        return Post.objects.filter(publish_date__isnull=True).order_by('create_date')

Answer 4

我在服务上的 start() 函数中遇到此错误，因为一位同事在 Windows 服务窗口中将该服务设置为“已禁用”。将其设置回“手动”修复了它。

PowerShell异常从另一个函数中调用“Start”和“0”参数

4 个答案: