0

麦克书空气

Java 1.8

Appium 桌面版 1.8.1

嗨，大家好，

我正在构建一个 TestNG 框架，并且我想以编程方式启动我的 appium 桌面服务器以进行测试。所以我决定做的是创建一个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。有一个 'null point exception'

1. 我做错了什么？

2. 我该如何解决这个问题？

这是以编程方式启动appium的代码：

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");
    }

}

这是来自eclipse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
4

3 回答 3

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 "

这可能会告诉你它找不到文件

于 2018-08-23T12:33:46.560 回答
0

如果您从 install for Windows 安装 NodeJS 并且 \AppData\Roaming\npm 为空，则应打开 Windows PowerShell 并运行命令：npm install -g appium

于 2020-11-13T10:25:16.630 回答
0

您似乎正在尝试使用 Appium.app 中的 JS main.js 文件，而不是使用节点安装 appium，您应该在
Appium_MAIN_JS = System.getenv(APPIUM_HOME)+"/node_modules/appium/build/lib/main.js下找到您的文件"（在您的 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）

然后你可以调用 .buildService(new AppiumServiceBuilder().withAppiumJS(new File(Appium_MAIN_JS)))

于 2018-08-24T17:04:57.023 回答