Question

我有VB.net代码，该代码利用Selenium和Chrome驱动程序导航到页面并下载文件。无论是否指定无头选项，它都可以正常工作。但是我也想取消命令窗口。根据阅读的内容，我需要启动ChromeDriver，并为HideCommandPromptWindow属性指定“ true”。当我这样做时，会出现以下错误：

OpenQA.Selenium.DriverServiceNotFoundException HResult = 0x80131500 消息=文件False \ chromedriver.exe不存在。可以从http://chromedriver.storage.googleapis.com/index.html下载驱动程序来源= WebDriver 堆栈跟踪：在OpenQA.Selenium.DriverService..ctor（字符串servicePath，Int32端口，字符串driverServiceExecutableName，Uri driverServiceDownloadUrl）在OpenQA.Selenium.Chrome.ChromeDriverService..ctor（字符串可执行文件路径，字符串可执行文件名称，Int32端口）在OpenQA.Selenium.Chrome.ChromeDriver..ctor（字符串chromeDriverDirectory，ChromeOptions选项）在OpenQA.Selenium.Chrome.ChromeDriver..ctor（String chromeDriverDirectory）

我正在使用CommandWindow的TitleBar中显示的路径，它在运行和运行时会看到，因此我知道该路径和文件是有效的。

基于错误消息“文件False \ chromedrive.exe ...不存在...”的事实，看来我传递给该路径的arg某种程度上被评估为“假”。

这是正在运行的代码的片段-在第219或220行出错：

    Dim cOpt As New ChromeOptions()
    cOpt.AddArguments("--headless", "--no-sandbox", "--disable-gpu")

    Dim param As New Dictionary(Of String, Object)
    param.Add("behavior", "allow")
    param.Add("downloadPath", G.gRadiusExportsFolder)

    Dim cdp As String = FixPathSlash(My.Application.Info.DirectoryPath, False)

    Dim d As New ChromeDriver(cOpt)
    'LINE 219-- Dim d As New ChromeDriver(ChromeDriverService.CreateDefaultService(cdp, "chromedriver.exe").HideCommandPromptWindow = True)
    'LINE220-- Dim d As New ChromeDriver(ChromeDriverService.CreateDefaultService(cdp, "chromedriver.exe").HideCommandPromptWindow = True, cOpt)

    Wait(5)
    d.ExecuteChromeCommand("Page.setDownloadBehavior", param)

Answer 1

    Dim cOpt As New ChromeOptions()
    cOpt.AddArguments("--headless", "--no-sandbox", "--disable-gpu")

    Dim param As New Dictionary(Of String, Object)
    param.Add("behavior", "allow")
    param.Add("downloadPath", G.gRadiusExportsFolder)

    Dim driverService = ChromeDriverService.CreateDefaultService()
    driverService.HideCommandPromptWindow = True
    Dim d As New ChromeDriver(driverService, cOpt)

    Wait(5)
    d.ExecuteChromeCommand("Page.setDownloadBehavior", param)

即使指定正确的路径，也要获取DriverServiceNotFoundException

1 个答案: