Question

Mac book air

Java 1.8

Appium桌面版本1.8.1

嗨，

我正在构建一个TestNG框架，并且我想以编程方式启动我的appium Desktop服务器进行测试。所以我决定要做的是创建一个Java测试类来为我调用appium，我以为我已经编码好了，但是当我运行它只是为了检查时。得到了'null point exception'

1。我做错了什么？

2。我该如何解决？

这是启动appium的程序代码：

package aappiumLaunchServer;

import java.io.File;

import io.appium.java_client.service.local.AppiumServiceBuilder;

public class LaunchAppium {

    private static AppiumServiceBuilder service;

    public static void main(String[] args) {
        //text
        stopAppium();
        startAppium();
        stopAppium();
    }

    public static void startAppium() {
        System.out.println("Start Appium Server");
        service = new AppiumServiceBuilder().usingDriverExecutable(new File("/usr/local/bin/node"))
        .withAppiumJS(new File ("/Applications/Appium.app/Contents/Resources/app/node_modules/appium/build/lib/main.js "));
        service.build().start();
        System.out.println("You can now use Appium Server");
    }

    public static void stopAppium(){
        System.out.println("Appium Server is shutting down....");
        try {
            service.build().stop();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            System.out.println("Your current appium session is terminated... ");
        }
        System.out.println(" Appium Server has shut down. Thank you for using Appium Server");
    }

}

这是日食的消息

appium Server is shutting down....
java.lang.NullPointerExceptionYour current appium session is terminated... 
 Appium Server has shut down. Thank you for using Appium Server
Start Appium Server

    at aappiumLaunchServer.LaunchAppium.stopAppium(LaunchAppium.java:44)
    at aappiumLaunchServer.LaunchAppium.main(LaunchAppium.java:16)
Exception in thread "main" io.appium.java_client.service.local.InvalidServerInstanceException: Invalid server instance exception has occured: The invalid appium node /Applications/Appium.app/Contents/Resources/app/node_modules/appium/build/lib/main.js  has been defined
    at io.appium.java_client.service.local.AppiumServiceBuilder.validateNodeStructure(AppiumServiceBuilder.java:102)
    at io.appium.java_client.service.local.AppiumServiceBuilder.checkAppiumJS(AppiumServiceBuilder.java:294)
    at io.appium.java_client.service.local.AppiumServiceBuilder.createArgs(AppiumServiceBuilder.java:389)
    at org.openqa.selenium.remote.service.DriverService$Builder.build(DriverService.java:342)
    at aappiumLaunchServer.LaunchAppium.startAppium(LaunchAppium.java:29)
    at aappiumLaunchServer.LaunchAppium.main(LaunchAppium.java:17)
Caused by: java.io.IOException: The node /Applications/Appium.app/Contents/Resources/app/node_modules/appium/build/lib/main.js doesn't exist
    at io.appium.java_client.service.local.AppiumServiceBuilder.validateNodeStructure(AppiumServiceBuilder.java:104)
    ... 5 more

Answer 1

只需在startAppium方法的调试模式下尝试创建文件实例

new File ("/Applications/Appium.app/Contents/Resources/app/node_modules/appium/build/lib/main.js "

这可能会告诉您找不到文件

Answer 2

似乎您正在尝试使用Appium.app中的JS main.js文件，而不是使用node安装appium，您应该在
下找到文件 Appium_MAIN_JS = System.getenv（APPIUM_HOME）+“ / node_modules / appium / build / lib / main.js”（在bash_profile中定义APPIUM_HOME）您的代码可能无权访问Appium.app（我认为它位于Application文件夹中）

然后您可以致电 .buildService（new AppiumServiceBuilder（）。withAppiumJS（new File（Appium_MAIN_JS）））

Answer 3

如果从Windows的安装中安装了NodeJS，并且\ AppData \ Roaming \ npm为空，则应打开Windows PowerShell并运行命令： npm install -g appium

Appium Java TestNG Framework>通过Mac空点异常通过appium main.js文件以编程方式启动Appium

3 个答案: