硒試圖添加擴展時拋出錯誤 - 「無法連接到二進制FirefoxBinary」和「無法找到包含擴展ID的節點」

Question

我想讓Selenium在測試時安裝擴展。我正在使用最新的獨立JAR（selenium-server-standalone-2.26.0.jar）和Firefox 17來運行我的測試。當我不想添加擴展名時，該程序完美工作。

我已驗證多次，我試圖使用的擴展文件存在，並可以由程序訪問，事實上包含有效的install.rdf，因爲我用它來手動安裝擴展名在我的默認Firefox個人資料。

我的代碼是：

FirefoxProfile fp=new FirefoxProfile(); 
File ext=new File("myext-2.17.xpi"); 
     try { 
      fp.addExtension(ext); 
      fp.setPreference("extensions.myext.version", "myext-2.17"); 
     } catch (Exception e2) { 
      e2.printStackTrace(); 
     } 
WebDriver wd=new FirefoxDriver(fp); 

完整的堆棧跟蹤如下：使用FF16和FF9也存在

Exception in thread "pool-1-thread-2" org.openqa.selenium.WebDriverException: Failed to connect to binary FirefoxBinary(C:\Program Files (x86)\Mozilla Firefox\firefox.exe) on port 7055; process output follows: 
null 
Build info: version: '2.26.0', revision: '18041', time: '2012-11-01 19:33:38' 
System info: os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.7.0_02' 
Driver info: driver.version: FirefoxDriver 
    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:122) 
    at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:243) 
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:109) 
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:189) 
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:182) 
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:178) 
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:95) 
    at TrafficGenerator.BrowserWindow.run(BrowserWindow.java:80) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
    at java.lang.Thread.run(Unknown Source) 
Caused by: org.openqa.selenium.WebDriverException: org.openqa.selenium.WebDriverException: Cannot locate node containing extension id: C:\Users\Vivek\AppData\Local\Temp\unzip3924903411706376479stream\install.rdf 
Build info: version: '2.26.0', revision: '18041', time: '2012-11-01 19:33:38' 
System info: os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.7.0_02' 
Driver info: driver.version: FirefoxDriver 
Build info: version: '2.26.0', revision: '18041', time: '2012-11-01 19:33:38' 
System info: os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.7.0_02' 
Driver info: driver.version: FirefoxDriver 
    at org.openqa.selenium.firefox.internal.FileExtension.readIdFromInstallRdf(FileExtension.java:141) 
    at org.openqa.selenium.firefox.internal.FileExtension.writeTo(FileExtension.java:60) 
    at org.openqa.selenium.firefox.FirefoxProfile.installExtensions(FirefoxProfile.java:465) 
    at org.openqa.selenium.firefox.FirefoxProfile.layoutOnDisk(FirefoxProfile.java:443) 
    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:77) 
    ... 10 more 

錯誤。 關於什麼可能是錯誤的原因以及我如何解決它的任何想法？

Answer 1

Caused by: org.openqa.selenium.WebDriverException: org.openqa.selenium.WebDriverException: Cannot locate node containing extension id: C:\Users\Vivek\AppData\Local\Temp\unzip3924903411706376479stream\install.rdf 

看起來像你的擴展在RDF描述缺少必要的「擴展ID」字段。

您可能會嘗試在沒有您的擴展名的情況下啓動Firefox，並嘗試在沒有硒的情況下將您的擴展程序安裝到正在運行的Firefox中。