Firefox 使用browser.helperApps.neverAsk保存图像而不请求确认。saveToDisk失败

当右键单击“另存为”选项时，我试图保存图像文件（jpeg），而不要求确认是否保存图像

设置了firefox配置文件的已知属性后，确认对话框仍然会出现，并且可以找到解决方案

但是，使用相同的属性，excel的打开文件也可以工作

    fxProfile.setPreference("browser.download.folderList", 2);
    fxProfile.setPreference("browser.download.manager.showWhenStarting",false);
    fxProfile.setPreference("browser.download.dir", "D:\\mydownloads\\");
    fxProfile.setAcceptUntrustedCertificates(true);
    fxProfile.setPreference("browser.helperApps.alwaysAsk.force", false);
    fxProfile.setPreference("browser.helperApps.neverAsk.saveToDisk","application/octet-stream");
    fxProfile
            .setPreference(
                    "browser.helperApps.neverAsk.openFile",
                    "text/csv, application/pdf, application/x-msexcel,application/excel,application/x-excel,application/vnd.ms-excel,application/x-excel,application/x-msexcel,image/png,image/jpeg,text/html,text/plain,application/msword,application/xml");
    fxProfile
            .setPreference(
                    "browser.helperApps.neverAsk.saveToDisk",
                    "text/csv, application/pdf, application/x-msexcel,application/excel,application/x-excel,application/excel,application/x-excel,application/excel,application/vnd.ms-excel,application/x-excel,application/x-msexcel,image/png,image/pjpeg,image/jpeg,text/html,text/plain,application/msword,application/xml,application/excel");

    WebDriver driver = new FirefoxDriver(fxProfile);

• selenium-server-standalone-2.45.0.jar

• java版本“1.8.0_31”

您设置了两次

browser.helperApps.neverAsk.saveToDisk

您不应该设置

browser.helperApps.neverAsk.openFile

PHP中的工作代码示例（无论使用何种语言，设置都相同）：

$profile = new FirefoxProfile();
$profile->setPreference('browser.download.folderList', 2); # download to dir
$profile->setPreference('browser.download.panel.shown', false); # don't show info bubble
$profile->setPreference('browser.download.dir', '/tmp');
$profile->setPreference('browser.helperApps.neverAsk.openFile', 'application/x-octet-stream,text/csv'); # skip confirm
$capabilities->setCapability(FirefoxDriver::PROFILE, $profile);