原始错误：io.appium.uiautomator2.common.exceptions.UiAutomator2Exception

Question

• 运行脚本时出现未知的服务器端错误。
• 该脚本将在滚动时终止，否则它将正常工作。

记录错误：

org.openqa.selenium.WebDriverException: An unknown server-side error occurred while processing the command. Original error: io.appium.uiautomator2.common.exceptions.UiAutomator2Exception: java.lang.IllegalStateException: UiAutomation not connected!
    at io.appium.uiautomator2.utils.UiExpressionParser.invokeMethod(UiExpressionParser.java:251)
    at io.appium.uiautomator2.utils.UiScrollableParser.consumeMethodCall(UiScrollableParser.java:124)
    at io.appium.uiautomator2.utils.UiScrollableParser.parse(UiScrollableParser.java:60)
    at io.appium.uiautomator2.utils.UiAutomatorParser.consumeStatement(UiAutomatorParser.java:93)
    at io.appium.uiautomator2.utils.UiAutomatorParser.parse(UiAutomatorParser.java:49)
    at io.appium.uiautomator2.utils.LocationHelpers.toSelectors(LocationHelpers.java:95)
    at io.appium.uiautomator2.utils.LocationHelpers.toSelector(LocationHelpers.java:88)
    at io.appium.uiautomator2.handler.FindElement.findElement(FindElement.java:144)
    at io.appium.uiautomator2.handler.FindElement.safeHandle(FindElement.java:75)
    at io.appium.uiautomator2.handler.request.SafeRequestHandler.handle(SafeRequestHandler.java:37)
    at io.appium.uiautomator2.server.AppiumServlet.handleRequest(AppiumServlet.java:250)
    at io.appium.uiautomator2.server.AppiumServlet.handleHttpRequest(AppiumServlet.java:241)
    at io.appium.uiautomator2.http.ServerHandler.channelRead(ServerHandler.java:44)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:366)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:352)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:345)
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:366)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:352)

* **元素信息：

{Using=-android uiautomator, value=new UiScrollable(new UiSelector()).scrollIntoView(new UiSelector().text(" val "));}

Appium日志：

Answer 1

在使用adb kill-server; adb start-server运行测试之前重新启动adb adb kill-server; adb start-server adb kill-server; adb start-server 。 因为有时appium服务器出现adb问题，所以通过重新启动可以避免此问题，并非每次出现此错误时都可以，如果未解决，您可以再次开始执行，请重新启动adb ，然后开始执行将起作用的脚本。 ..如果您有任何疑问，请在下面写下。