Selenium 无法在无头模式下通过Google Chrome下载.csv文件

我一直尝试在Chrome headless模式下使用selenium下载csv文件，但在我的场景中，不起作用。我试着在没有头的情况下运行同一个脚本，结果成功了。我尝试了相同的无头配置的网站，它的工作。下面是我正在使用的chrome无头配置

System.setProperty("webdriver.chrome.driver", Constants.CHROME_DRIVER);
ChromeOptions options = new ChromeOptions();
options.addArguments("--test-type");
options.addArguments("--headless");
options.addArguments("--disable-extensions"); //to disable browser extension popup
options.addArguments("window-size=1980,1080");
options.addArguments("--disable-web-security");
options.addArguments("--no-sandbox");
options.addArguments("--disable-gpu");
options.addArguments("--disable-popup-blocking");
options.addArguments("--start-maximized");
options.addArguments("--allow-running-insecure-content");
options.setExperimentalOption("w3c", false);
options.addArguments("--ignore-certificate-errors");
options.addArguments("user-agent=Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36");

DesiredCapabilities cap = DesiredCapabilities.chrome();
cap.setCapability(ChromeOptions.CAPABILITY, options);

// set performance logger
// this sends Network.enable to chromedriver
LoggingPreferences logPrefs = new LoggingPreferences();
logPrefs.enable(LogType.PERFORMANCE, Level.ALL);
cap.setCapability("goog:loggingPrefs", logPrefs);

ChromeDriverService driverService = ChromeDriverService.createDefaultService();
driver = new ChromeDriver(driverService, cap);
String downloadFilepath = "C:\\Users\\User\\Downloads";
System.out.println(downloadFilepath);
Map < String, Object > commandParams = new HashMap<String, Object>();
commandParams.put("cmd", "Page.setDownloadBehavior");
Map < String, Object > params = new HashMap<String, Object>();
params.put("behavior", "allow");
params.put("download.prompt_for_download", false);
params.put("downloadPath", downloadFilepath);
commandParams.put("params", params);
ObjectMapper objectMapper = new ObjectMapper();
HttpClient httpClient = HttpClientBuilder.create().build();
try {
    String command = objectMapper.writeValueAsString(commandParams);
    String u = driverService.getUrl().toString() + "/session/" + ((ChromeDriver)driver).getSessionId() + "/chromium/send_command";
    System.out.println("U: " + u.toString());
    HttpPost request = new HttpPost(u);
    request.addHeader("content-type", "application/json");
    request.setEntity(new StringEntity(command));
    httpClient.execute(request);
} catch (Exception e) { }

driver.get(prop.getProperty("url"));

下载该文件

请在下面的日志中找到，您可以看到突出显示的部分，其中指出

net:：ERR_已中止

，但我在无头和无头两种情况下都遇到了此错误

无头模式的性能日志

任何人都知道我做错了什么

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编辑：当用户单击导出按钮时，应用程序流将打开一个新窗口，用户在其中填充数据并单击一个按钮，该按钮调用函数进行某种验证。验证后，它使用

document.formName.submit（）

提交表单。我能够找到解决方案。下面是工作代码

System.setProperty("webdriver.chrome.driver", Constants.CHROME_DRIVER);
ChromeOptions options = new ChromeOptions();
options.addArguments("--test-type");
options.addArguments("--headless");
options.addArguments("--disable-extensions"); //to disable browser extension popup
options.addArguments("window-size=1980,1080");
options.addArguments("--disable-web-security");
options.addArguments("--no-sandbox");
options.addArguments("--disable-gpu");
options.addArguments("--disable-popup-blocking");
options.addArguments("--start-maximized");
options.addArguments("--allow-running-insecure-content");
options.setExperimentalOption("w3c", false);
options.addArguments("--ignore-certificate-errors");
options.addArguments("user-agent=Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36");

HashMap<String, Object> chromePreferences = new HashMap<String, Object>();

// This part was missing in my old code.
chromePreferences.put("download.prompt_for_download", false);
chromePreferences.put("download.directory_upgrade", true);
chromePreferences.put("safebrowsing.enabled", false);
chromePreferences.put("profile.default_content_settings.popups", 0);
chromePreferences.put("safebrowsing.disable_download_protection", true);
chromePreferences.put("download.default_directory", downloadFilepath);
options.setExperimentalOption("prefs", chromePreferences);

DesiredCapabilities cap = DesiredCapabilities.chrome();
cap.setCapability(ChromeOptions.CAPABILITY, options);

// set performance logger
// this sends Network.enable to chromedriver
LoggingPreferences logPrefs = new LoggingPreferences();
logPrefs.enable(LogType.PERFORMANCE, Level.ALL);
cap.setCapability("goog:loggingPrefs", logPrefs);

ChromeDriverService driverService = ChromeDriverService.createDefaultService();
driver = new ChromeDriver(driverService, cap);
String downloadFilepath = "C:\\Users\\User\\Downloads";
System.out.println(downloadFilepath);
Map < String, Object > commandParams = new HashMap<String, Object>();
commandParams.put("cmd", "Page.setDownloadBehavior");
Map < String, Object > params = new HashMap<String, Object>();
params.put("behavior", "allow");
params.put("downloadPath", downloadFilepath);
commandParams.put("params", params);
ObjectMapper objectMapper = new ObjectMapper();
HttpClient httpClient = HttpClientBuilder.create().build();
try {
    String command = objectMapper.writeValueAsString(commandParams);
    String u = driverService.getUrl().toString() + "/session/" + ((ChromeDriver)driver).getSessionId() + "/chromium/send_command";
    System.out.println("U: " + u.toString());
    HttpPost request = new HttpPost(u);
    request.addHeader("content-type", "application/json");
    request.setEntity(new StringEntity(command));
    httpClient.execute(request);
} catch (Exception e) { }

System.setProperty（“webdriver.chrome.driver”，Constants.chrome\u driver）；
ChromeOptions选项=新的ChromeOptions（）；
options.addArguments（“--test type”）；
选项。添加参数（“--headless”）；
options.addArguments（“--disable extensions”）//禁用浏览器扩展弹出窗口
options.addArguments（“窗口大小=19801080”）；
options.addArguments（“--disable web security”）；
options.addArguments（“--no sandbox”）；
options.addArguments（“--disable gpu”）；
options.addArguments（“--disable popup blocking”）；
options.addArguments（“--start maximized”）；
options.addArguments（“--允许运行不安全的内容”）；
options.setExperimentalOption（“w3c”，false）；
options.addArguments（“--ignore certificate errors”）；
options.addArguments（“用户代理=Mozilla/5.0（Windows NT 10.0；Win64；x64）AppleWebKit/537.36（KHTML，如Gecko）Chrome/79.0.3945.130 Safari/537.36”）；
HashMap chromePreferences=新HashMap（）；
//我的旧代码中缺少这一部分。
chromePreferences.put（“下载.提示下载”，false）；
chromePreferences.put（“download.directory\u upgrade”，true）；
chromePreferences.put（“safebrowsing.enabled”，false）；
chromePreferences.put（“profile.default\u content\u settings.popups”，0）；
chromePreferences.put（“安全浏览.禁用下载保护”，true）；
chromePreferences.put（“download.default_目录”，downloadFilepath）；
选项。设置实验选项（“优先”，色度优先）；
DesiredCapabilities=DesiredCapabilities.chrome（）；
上限设置能力（色度选项、能力、选项）；
//设置性能记录器
//这会将Network.enable发送到chromedriver
LoggingPreferences logPrefs=新的LoggingPreferences（）；
logPrefs.enable（LogType.PERFORMANCE，Level.ALL）；
上限设置能力（“goog:loggingPrefs”，logPrefs）；
ChromeDriverService driverService=ChromeDriverService.createDefaultService（）；
驾驶员=新的镀铬驾驶员（驾驶员服务，cap）；
String downloadFilepath=“C:\\Users\\User\\Downloads”；
System.out.println（下载文件路径）；
MapcommandParams=newhashmap（）；
commandParams.put（“cmd”，“Page.setDownloadBehavior”）；
Mapparams=newhashmap（）；
参数put（“行为”、“允许”）；
参数put（“downloadPath”，downloadFilepath）；
commandParams.put（“params”，params）；
ObjectMapper ObjectMapper=新的ObjectMapper（）；
HttpClient HttpClient=HttpClientBuilder.create（）.build（）；
试一试{
String命令=objectMapper.writeValueAsString（commandParams）；
字符串u=driverService.getUrl（）.toString（）+“/session/”+（（ChromeDriver）驱动程序）.getSessionId（）+“/Chrome/send_命令”；
System.out.println（“U:+U.toString（））；
HttpPost请求=新的HttpPost（u）；
addHeader（“内容类型”、“应用程序/json”）；
request.setEntity（新的StringEntity（命令））；
httpClient.execute（请求）；
}捕获（例外e）{}

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这篇文章帮助我解决了这个问题

Headless不支持这个。也不支持访问剪贴板。@Jortega headless chrome支持文件下载，因为我已经在其他一些网站上测试过了。问题出在这个特定的网页上。除了selenium之外呢。当您尝试手动下载时，它是否工作？是的，它适用于手动下载和使用chrome drive（无头）尝试只单击下载按钮下载数据？

System.setProperty("webdriver.chrome.driver", Constants.CHROME_DRIVER);
ChromeOptions options = new ChromeOptions();
options.addArguments("--test-type");
options.addArguments("--headless");
options.addArguments("--disable-extensions"); //to disable browser extension popup
options.addArguments("window-size=1980,1080");
options.addArguments("--disable-web-security");
options.addArguments("--no-sandbox");
options.addArguments("--disable-gpu");
options.addArguments("--disable-popup-blocking");
options.addArguments("--start-maximized");
options.addArguments("--allow-running-insecure-content");
options.setExperimentalOption("w3c", false);
options.addArguments("--ignore-certificate-errors");
options.addArguments("user-agent=Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36");

HashMap<String, Object> chromePreferences = new HashMap<String, Object>();

// This part was missing in my old code.
chromePreferences.put("download.prompt_for_download", false);
chromePreferences.put("download.directory_upgrade", true);
chromePreferences.put("safebrowsing.enabled", false);
chromePreferences.put("profile.default_content_settings.popups", 0);
chromePreferences.put("safebrowsing.disable_download_protection", true);
chromePreferences.put("download.default_directory", downloadFilepath);
options.setExperimentalOption("prefs", chromePreferences);

DesiredCapabilities cap = DesiredCapabilities.chrome();
cap.setCapability(ChromeOptions.CAPABILITY, options);

// set performance logger
// this sends Network.enable to chromedriver
LoggingPreferences logPrefs = new LoggingPreferences();
logPrefs.enable(LogType.PERFORMANCE, Level.ALL);
cap.setCapability("goog:loggingPrefs", logPrefs);

ChromeDriverService driverService = ChromeDriverService.createDefaultService();
driver = new ChromeDriver(driverService, cap);
String downloadFilepath = "C:\\Users\\User\\Downloads";
System.out.println(downloadFilepath);
Map < String, Object > commandParams = new HashMap<String, Object>();
commandParams.put("cmd", "Page.setDownloadBehavior");
Map < String, Object > params = new HashMap<String, Object>();
params.put("behavior", "allow");
params.put("downloadPath", downloadFilepath);
commandParams.put("params", params);
ObjectMapper objectMapper = new ObjectMapper();
HttpClient httpClient = HttpClientBuilder.create().build();
try {
    String command = objectMapper.writeValueAsString(commandParams);
    String u = driverService.getUrl().toString() + "/session/" + ((ChromeDriver)driver).getSessionId() + "/chromium/send_command";
    System.out.println("U: " + u.toString());
    HttpPost request = new HttpPost(u);
    request.addHeader("content-type", "application/json");
    request.setEntity(new StringEntity(command));
    httpClient.execute(request);
} catch (Exception e) { }