java - 在 selenium webdriver 中执行 javascript 时发生错误

Question

 static WebDriver driver = new  FirefoxDriver();
    public static void main(String[] args) throws IOException, InterruptedException {
        // TODO code application logic here
        BufferedReader br= new BufferedReader(new InputStreamReader(System.in));
        System.out.println("Enter base url....!!!");
        String baseurl = br.readLine();
        connection c= new connection();
        c.makeConnection(driver,baseurl);
       JavascriptExecutor js;
      if (driver instanceof JavascriptExecutor) {
    js = (JavascriptExecutor)driver;
    js.executeScript("alert('hello world');");
  }

发生以下错误

Exception in thread "main" org.openqa.selenium.UnhandledAlertException: Modal dialog present: hello world
Build info: version: '2.39.0', revision: 'ff23eac', time: '2013-12-16 16:11:15'
System info: host: 'comp74', ip: '192.168.0.74', os.name: 'Windows 7', os.arch: 'x86', os.version: '6.1', java.version: '1.7.0_17'
Session ID: f6ba3a2b-87d4-4192-ad1a-94cf260d8f6e
Driver info: org.openqa.selenium.firefox.FirefoxDriver
Capabilities [{platform=XP, acceptSslCerts=true, javascriptEnabled=true, cssSelectorsEnabled=true, databaseEnabled=true, browserName=firefox, handlesAlerts=true, browserConnectionEnabled=true, webStorageEnabled=true, nativeEvents=true, rotatable=false, locationContextEnabled=true, applicationCacheEnabled=true, takesScreenshot=true, version=26.0}]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
    at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:193)
    at org.openqa.selenium.remote.ErrorHandler.createUnhandledAlertException(ErrorHandler.java:174)
    at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:141)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:554)
    at org.openqa.selenium.remote.RemoteWebDriver.findElements(RemoteWebDriver.java:332)
    at org.openqa.selenium.remote.RemoteWebDriver.findElementsByXPath(RemoteWebDriver.java:408)
    at org.openqa.selenium.By$ByXPath.findElements(By.java:358)
    at org.openqa.selenium.remote.RemoteWebDriver.findElements(RemoteWebDriver.java:295)
    at javaapplication4.count.linkCount(count.java:27)
    at javaapplication4.JavaApplication4.main(JavaApplication4.java:34)

Answer 1

根据我的理解。执行警报后，如果您在警报已存在的情况下尝试在页面中执行任何其他操作，则会出现此错误。您提供实际的代码吗？

Exception shows 
at javaapplication4.count.linkCount(count.java:27)
at javaapplication4.JavaApplication4.main(JavaApplication4.java:34)

根据上面的堆栈跟踪，您在 linkCount 中执行了一些操作。如果您在 .executeScript("alert('hello world' 行后有任何代码。请注释它们，然后检查。