Question

由于我还不清楚如何在ChromeDriver中使用--headless模式下载文件 - selenium [Java]，请在此处添加示例，如何操作，我尝试这样做（文件下载没有--headless选项正常工作）：

ChromeOptions lChromeOptions = new ChromeOptions();
HashMap<String, Object> lChromePrefs = new HashMap<String, Object>();
lChromePrefs.put("profile.default_content_settings.popups", 0);
lChromePrefs.put("download.default_directory", _PATH_TO_DOWNLOAD_DIR);
lChromePrefs.put("browser.set_download_behavior", "{ behavior: 'allow' , downloadPath: '"+_PATH_TO_DOWNLOAD_DIR+"'}");

lChromeOptions.addArguments("--headless");
lChromeOptions.addArguments("--disable-gpu");
lChromeOptions.setExperimentalOption("prefs", lChromePrefs);
WebDriver lWebDriver = new ChromeDriver(lChromeOptions);

据我所知，自从Chrome v60 +设置Browser.setDownloadBehaviour(true, _DIRECTORY)以来，无法以无头模式下载文件，但我无法找到ChromeDriver是否已经支持它的信息，或者只是我使用错误的chrome首选项作为参数

ChromeDriver版本：2.34 Selenium + WebDriver版本：3.8.1

Answer 1

在Java中使用如下：

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();

Answer 2

根据chrome驱动程序的正式发布页面，已针对此问题引入了修复程序。任何高于77的chrome驱动程序版本都可以无头模式下载文件。

options.addArguments("--headless");

使用ChromeDriver和无头模式下载Java，Selenium中的文件

2 个答案: