Chromium / Chrome无头 - 文件下载不起作用?

时间:2017-02-26 16:36:00

标签: chromium headless

我下载了最新版本的铬,以测试无头功能。

当我跑(作为根,因为我还在测试东西)时:

Tenants

在GUI终端中,它会打开Chromium并下载文件。

如果我试图让它无头,我输入以下内容:

NewRentPayments

终端输出一些信息,没有窗口打开,但是:我没有在任何地方下载文件。

我一直在寻找互联网和讨论组以获取更多信息,但找不到任何信息。

Chromium的文件下载无法在无头模式下工作吗?

7 个答案:

答案 0 :(得分:12)

这是无头实施中报告的错误: https://bugs.chromium.org/p/chromium/issues/detail?id=696481

答案 1 :(得分:5)

在Java中使用以下代码:

System.setProperty("webdriver.chrome.driver", "/usr/local/bin/chromedriver");
         ChromeOptions options = new ChromeOptions();
                options.addArguments("--test-type");
                options.addArguments("--headless");
                options.addArguments("--disable-extensions"); //to disable browser extension popup

                ChromeDriverService driverService = ChromeDriverService.createDefaultService();
                ChromeDriver driver = new ChromeDriver(driverService, options);

                Map<String, Object> commandParams = new HashMap<>();
                commandParams.put("cmd", "Page.setDownloadBehavior");
                Map<String, String> params = new HashMap<>();
                params.put("behavior", "allow");
                params.put("downloadPath", "//home//vaibhav//Desktop");
                commandParams.put("params", params);
                ObjectMapper objectMapper = new ObjectMapper();
                HttpClient httpClient = HttpClientBuilder.create().build();
                String command = objectMapper.writeValueAsString(commandParams);
                String u = driverService.getUrl().toString() + "/session/" + driver.getSessionId() + "/chromium/send_command";
                HttpPost request = new HttpPost(u);
                request.addHeader("content-type", "application/json");
                request.setEntity(new StringEntity(command));
                httpClient.execute(request);
        driver.get("http://www.seleniumhq.org/download/");
        driver.findElement(By.linkText("32 bit Windows IE")).click();

答案 2 :(得分:2)

使用ChromeDriverService和POST会话/ {sessionId} / chromium / send_command

用于POST的JSON:

{
    "cmd": "Page.setDownloadBehavior",
    "params": {
        "behavior": "allow",
        "downloadPath": "C:\\Download\\Path"
    }
}

C#解决方案

添加对System.Net.Http的引用,并使用NuGet安装Newtonsoft.JSON。

public static IWebDriver Driver { get; private set; }

public void SetDriver()
{
    var chromeOptions = new ChromeOptions();
    chromeOptions.AddArguments("--headless", "--window-size=1920,1080");

    var driverService = ChromeDriverService.CreateDefaultService();
    Driver = new ChromeDriver(driverService, chromeOptions);

    Task.Run(() => AllowHeadlessDownload(driverService));
}

static async Task AllowHeadlessDownload(ChromeDriverService driverService )
{
    var jsonContent = new JObject(
        new JProperty("cmd", "Page.setDownloadBehavior"),
        new JProperty("params",
        new JObject(new JObject(
            new JProperty("behavior", "allow"),
            new JProperty("downloadPath", @"C:\Download\Path")))));
    var content = new StringContent(jsonContent.ToString(), Encoding.UTF8, "application/json");
    var sessionIdProperty = typeof(ChromeDriver).GetProperty("SessionId");
    var sessionId = sessionIdProperty.GetValue(Driver, null) as SessionId;

    using (var client = new HttpClient())
    {
        client.BaseAddress = driverService.ServiceUrl;
        var result = await client.PostAsync("session/" + sessionId.ToString() + "/chromium/send_command", content);
        var resultContent = await result.Content.ReadAsStringAsync();
    }
}

答案 3 :(得分:0)

注意:不完全回答问题,但解决了问题

我研究了很多关于使用不同的参数/选项/偏好进行无头镀铬下载,但没有任何效果。然后我使用Apache Commons的FileUtils

使用标准的Java下载文件方式
FileUtils.copyURLToFile(URI, FILE);

答案 4 :(得分:0)

由于Chrome Remote Interface

,我能够使用chrome headless下载文件
public void TryEnableFileDownloading(string downloadPath)
{
    TrySendCommand("Page.setDownloadBehavior", new Dictionary<string, object>()
    {
        ["behavior"] = "allow",
        ["downloadPath"] = downloadPath
    });
}

可以在此处找到与selenium集成的完整代码 https://github.com/cezarypiatek/Tellurium/blob/master/Src/MvcPages/SeleniumUtils/ChromeRemoteInterface/ChromeRemoteInterface.cs

有关setDownloadBehavior和Chrome Remote界面的详细信息 https://chromedevtools.github.io/devtools-protocol/tot/Page/#method-setDownloadBehavior

答案 5 :(得分:0)

以下代码在使用ChromeDriver 2.46的C#中有效

    private ChromeDriver GetDriver()
    {
        var options = new ChromeOptions();

        options.AddArguments("headless");
        options.AddUserProfilePreference("download.prompt_for_download", "false");
        options.AddUserProfilePreference("download.directory_upgrade", "true");
        options.AddUserProfilePreference("download.prompt_for_download", "false");
        options.AddUserProfilePreference("safebrowsing.enabled", "false");
        options.AddUserProfilePreference("safebrowsing.disable_download_protection", "true");

        options.AddArguments("--disable-web-security");

        var curr = Directory.GetCurrentDirectory();
        options.AddUserProfilePreference("download.default_directory", curr);

        var driver = new ChromeDriver(options);
        Log.Info($"Started Chrome Driver with options: {options.ToJsonNoTypes()}");

        var param = new Dictionary<string, object>();
        param.Add("behavior", "allow");
        param.Add("downloadPath", curr);
        driver.ExecuteChromeCommand("Page.setDownloadBehavior", param);

        return driver;
    }

答案 6 :(得分:0)

我今天在Windows 10上的IdeaJ编辑器,Java和Maven中进行了尝试,并且运行良好:

                ChromeOptions ds = getDesiredCapabilities(browserName);

                ChromeDriverService driverService = ChromeDriverService.createDefaultService();
                ChromeDriver driver = new ChromeDriver(driverService, ds);

                Map<String, Object> commandParams = new HashMap<>();
                commandParams.put("cmd", "Page.setDownloadBehavior");

                Map<String, String> params = new HashMap<>();
                params.put("behavior", "allow");
                params.put("downloadPath", System.getProperty("user.home") + File.separator + "Downloads");
                commandParams.put("params", params);

                ObjectMapper objectMapper = new ObjectMapper();
                HttpClient httpClient = HttpClientBuilder.create().build();

                String command = objectMapper.writeValueAsString(commandParams);

                String u = driverService.getUrl().toString() + "/session/" + driver.getSessionId() + "/chromium/send_command";

                HttpPost request = new HttpPost(u);
                request.addHeader("content-type", "application/json");
                request.setEntity(new StringEntity(command));
                httpClient.execute(request);

此配置了“驱动程序”实例的用户,可以通过URL或Json / AngularJs下载操作导航到下载文件。 另外,由于互联网速度缓慢,下载时有时还会损坏文件。

更多信息,相同的配置将适用于最新版本的Chrome驱动程序77中的Google Chrome UI或Headless执行〜