AppiumForWindows 菜鸟计划（四）启动服务_win7 appiumserver 已启动, 运行appium客户端,报错 appium serve-优快云博客

本文链接：https://blog.youkuaiyun.com/wslg1010/article/details/45536697

这篇博客介绍了如何启动AppiumForWindows服务。通过点击启动按钮，该操作与LaunchCommand绑定。文中深入解析了服务启动的内部过程，涉及ProcessStartInfo的配置和使用，以及在新线程中执行服务启动的详细步骤。

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看到了那个硕大的三角了么，启动服务就是点它，别犹豫，点吧。

查看主页面文件MainWindowVM.xaml，可以看到启动按钮：

    Command="{Binding LaunchCommand}"

说明该按钮绑定了LaunchCommand，查找：

    public ICommand LaunchCommand
    {
        get { return _LaunchCommand ?? (_LaunchCommand = new RelayCommand(() => _ExecuteLaunchCommand(), () => _CanExecuteLaunchCommand())); }
    }

继续查看：

    private void _ExecuteLaunchCommand()
    {
        if (_AppiumEngine.IsRunning)
        {
            _AppiumEngine.Stop();
        }
        else
        {
            _AppiumEngine.Start();
        }
    }

接着我们就找到了真正执行启动服务的地方了：

    public void Start()
    {
        //setup runner
        AppiumServerRunner setup = new AppiumServerRunner(this._NodePath, this._AppiumPackageFolder, _Settings);

        // setup basic process info
        var appiumServerProcessStartInfo = new ProcessStartInfo();
        appiumServerProcessStartInfo.WorkingDirectory = setup.WorkingDirectory;
        appiumServerProcessStartInfo.FileName = setup.Filename;
        appiumServerProcessStartInfo.Arguments = setup.GetArgumentsCmdLine() + " --log-no-color";
        appiumServerProcessStartInfo.RedirectStandardOutput = true;
        appiumServerProcessStartInfo.RedirectStandardError = true;
        appiumServerProcessStartInfo.CreateNoWindow = true;
        appiumServerProcessStartInfo.UseShellExecute = false;

        //set up the process and allow the thread to start it
        _AppiumServerProcess = new Process();
        _AppiumServerProcess.StartInfo = appiumServerProcessStartInfo;
        _AppiumServerProcess.OutputDataReceived += _Process_OutputDataReceived;
        _AppiumServerProcess.ErrorDataReceived += _Process_ErrorDataReceived;

        this._ServerExitMonitorThread = new Thread(() =>
        {
            _FireOutputData("Starting Node Server");
            _OnRunningChanged(true);
            this._AppiumServerProcess.Start();
            this._AppiumServerProcess.BeginOutputReadLine();
            this._AppiumServerProcess.BeginErrorReadLine();
            this._AppiumServerProcess.WaitForExit();
            _OnRunningChanged(false);
            _FireOutputData("Node Server Process Ended");
        });
        this._ServerExitMonitorThread.Name = "Server Exit Monitor";
        this._ServerExitMonitorThread.Priority = ThreadPriority.BelowNormal;
        this._ServerExitMonitorThread.Start();
    }

额，整体来说就是new 一个ProcessStartInfo，各种初始化，各种赋值，然后交给新new的 Process，再然后起一个Thread，再在然后，执行……
appiumServerProcessStartInfo的详细信息：

如果仔细看上边的代码，就会发现，其实启动和停止走的是同一条路，只不过通过if (_AppiumEngine.IsRunning)进行判断，结束自然调用的就是stop了，没啥可说的了……

        public void Stop()
        {
            if (IsRunning && null != _ServerExitMonitorThread && _ServerExitMonitorThread.IsAlive && null != _AppiumServerProcess)
            {
                _AppiumServerProcess.OutputDataReceived -= _Process_OutputDataReceived;
                _AppiumServerProcess.ErrorDataReceived -= _Process_ErrorDataReceived;
                _AppiumServerProcess.Kill();
                _AppiumServerProcess.Dispose();
                _AppiumServerProcess = null;
                _FireOutputData("Killed Node Server.");
                _OnRunningChanged(false);
            }
        }