Question

我的代码尝试等到我们的原生应用加载。但它收到了NPE：

    RemoteWebDriver driver = 
                new AndroidDriver<MobileElement>//this gets NPE below
                //new RemoteWebDriver //this works!!
                (new URL("http://127.0.0.1:4723/wd/hub"), capabilities);
    new WebDriverWait(driver, 30).until(
            ExpectedConditions.presenceOfElementLocated(
                    By.xpath("//*[contains(@text, 'Tan')]")));

当我用RemoteDriver替换AndroidDriver时，一切都按预期工作！我们的应用程序启动，我们的测试代码等待应用程序加载。问题是，我们无法使用RemoteDriver使用特定于移动设备的API。

Appium GUI v1.4.16.1（Ophiuchus）。请告诉我是否需要任何其他版本信息，因为我不擅长npm等。但我上周下载了所有这些内容。

这是堆栈跟踪：

java.lang.NullPointerException
at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:152)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:636)
at io.appium.java_client.DefaultGenericMobileDriver.execute(DefaultGenericMobileDriver.java:40)
at io.appium.java_client.AppiumDriver.execute(AppiumDriver.java:1)
at io.appium.java_client.android.AndroidDriver.execute(AndroidDriver.java:1)
at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:369)
at io.appium.java_client.DefaultGenericMobileDriver.findElement(DefaultGenericMobileDriver.java:56)
at io.appium.java_client.AppiumDriver.findElement(AppiumDriver.java:1)
at io.appium.java_client.android.AndroidDriver.findElement(AndroidDriver.java:1)
at org.openqa.selenium.remote.RemoteWebDriver.findElementByXPath(RemoteWebDriver.java:474)
at io.appium.java_client.DefaultGenericMobileDriver.findElementByXPath(DefaultGenericMobileDriver.java:134)
at io.appium.java_client.AppiumDriver.findElementByXPath(AppiumDriver.java:1)
at io.appium.java_client.android.AndroidDriver.findElementByXPath(AndroidDriver.java:1)
at org.openqa.selenium.By$ByXPath.findElement(By.java:361)
at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:361)
at io.appium.java_client.DefaultGenericMobileDriver.findElement(DefaultGenericMobileDriver.java:52)
at io.appium.java_client.AppiumDriver.findElement(AppiumDriver.java:1)
at io.appium.java_client.android.AndroidDriver.findElement(AndroidDriver.java:1)
at org.openqa.selenium.support.ui.ExpectedConditions.findElement(ExpectedConditions.java:895)
at org.openqa.selenium.support.ui.ExpectedConditions.access$000(ExpectedConditions.java:41)
at org.openqa.selenium.support.ui.ExpectedConditions$6.apply(ExpectedConditions.java:181)
at org.openqa.selenium.support.ui.ExpectedConditions$6.apply(ExpectedConditions.java:178)
at org.openqa.selenium.support.ui.FluentWait.until(FluentWait.java:238)

以下是我在Appium GUI上看到的内容：

> info: [debug] Appium session started with sessionId 4153c447-cfba-45db-a23a-1e603a3e0e7c
> info: <-- POST /wd/hub/session 303 17598.310 ms - 74 
> info: --> GET /wd/hub/session/4153c447-cfba-45db-a23a-1e603a3e0e7c {}
> info: [debug] Responding to client with success: {"status":0,"value":{"platform":"LINUX","browserName":"Android","platformVersion":"4.4.2","webStorageEnabled":false,"takesScreenshot":true,"javascriptEnabled":true,"databaseEnabled":false,"networkConnectionEnabled":true,"locationContextEnabled":false,"warnings":{},"desired":{"app":"C:\\Temp\\appium\\akbank-release.apk","appActivity":"com.akbank.akbankdirekt.ui.prelogin.SplashActivity","platformName":"Android","deviceName":"OJOBUCIBGEKNTKYS"},"app":"C:\\Temp\\appium\\akbank-release.apk","appActivity":"com.akbank.akbankdirekt.ui.prelogin.SplashActivity","platformName":"Android","deviceName":"OJOBUCIBGEKNTKYS"},"sessionId":"4153c447-cfba-45db-a23a-1e603a3e0e7c"}
> info: <-- GET /wd/hub/session/4153c447-cfba-45db-a23a-1e603a3e0e7c 200 4.362 ms - 667 {"status":0,"value":{"platform":"LINUX","browserName":"Android","platformVersion":"4.4.2","webStorageEnabled":false,"takesScreenshot":true,"javascriptEnabled":true,"databaseEnabled":false,"networkConnectionEnabled":true,"locationContextEnabled":false,"warnings":{},"desired":{"app":"C:\\Temp\\appium\\akbank-release.apk","appActivity":"com.akbank.akbankdirekt.ui.prelogin.SplashActivity","platformName":"Android","deviceName":"OJOBUCIBGEKNTKYS"},"app":"C:\\Temp\\appium\\akbank-release.apk","appActivity":"com.akbank.akbankdirekt.ui.prelogin.SplashActivity","platformName":"Android","deviceName":"OJOBUCIBGEKNTKYS"},"sessionId":"4153c447-cfba-45db-a23a-1e603a3e0e7c"}
> info: --> POST /wd/hub/session/4153c447-cfba-45db-a23a-1e603a3e0e7c/element {"using":"xpath","value":"//*[contains(@text, 'Tan')]"}
> info: [debug] Waiting up to 0ms for condition
> info: [debug] Pushing command to appium work queue: ["find",{"strategy":"xpath","selector":"//*[contains(@text, 'Tan')]","context":"","multiple":false}]
> info: [debug] [BOOTSTRAP] [debug] Got data from client: {"cmd":"action","action":"find","params":{"strategy":"xpath","selector":"//*[contains(@text, 'Tan')]","context":"","multiple":false}}
> info: [debug] [BOOTSTRAP] [debug] Got command of type ACTION
> info: [debug] [BOOTSTRAP] [debug] Got command action: find
> info: [debug] [BOOTSTRAP] [debug] Finding //*[contains(@text, 'Tan')] using XPATH with the contextId:  multiple: false
> info: [debug] [BOOTSTRAP] [debug] Returning result: {"value":"Could not find an element using supplied strategy. ","status":7}
> info: [debug] Condition unmet after 8397ms. Timing out.
> info: [debug] Responding to client with error: {"status":7,"value":{"message":"An element could not be located on the page using the given search parameters.","origValue":"Could not find an element using supplied strategy. "},"sessionId":"4153c447-cfba-45db-a23a-1e603a3e0e7c"}
> info: <-- POST /wd/hub/session/4153c447-cfba-45db-a23a-1e603a3e0e7c/element 500 8402.114 ms - 230

Answer 1

在等待之前我已经睡了一觉，现在我没有得到NPE：

  var employeeList = JSON.stringify(text);
        var  hi = table.text;

        for (var i = 0; i < hi.length; i++) {
            //  var table = $("<table id=DynamicTable border=1></table>").appendTo("#employeeData");
            var employeeId = hi[i].employeeid;

            var employeeName = hi[i].name;
            var employeecity = hi[i].city;


            $('#tableemployees tbody').append('<tr><td>' + employeeId + '</td><td>' + employeeName + '</td><td>' + employeecity + '</td></tr>');

            $('td').click(function () {


                $('td:nth-child(2)').replaceWith(function () {

                    return '<input type="text" id="txt"' + employeeId + ' value="' + $(this).text() + '"> </input>';


                });
            });

首次加载应用后，NPE就会被抛出。我认为这是一个内部的Appium问题。

使用AndroidDriver并调用WebDriverWait时出现NullPointerException

1 个答案: