Android Appium测试启动错误+；远程网络驱动程序

运行Appium测试时出现以下错误

Exception in thread "main" org.openqa.selenium.remote.SessionNotFoundException: A                   session is either terminated or not started (Original error: Command failed: 'adb' is not    recognized as an internal or external command,
operable program or batch file.
) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 13.51 seconds
Build info: version: '2.30.0', revision: 'dc1ef9c', time: '2013-02-19 00:15:27'
System info: os.name: 'Windows 7', os.arch: 'x86', os.version: '6.1', java.version: '1.6.0_41'
Driver info: org.openqa.selenium.remote.RemoteWebDriver
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.new      Instance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:187)
    at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:151)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:554)
    at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:216)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:111)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:129)
    at tests.AppiumTest.main(AppiumTest.java:29)

---

以下措施解决了这个问题， 1.模拟器需要时间才能启动，需要等到它完全启动 2.平台工具和添加到%Path%env变量的工具的路径

DesiredCapabilities caps = new DesiredCapabilities();
    caps.setCapability("app-package", "com.android.example.spinner");
    caps.setCapability("browserName", "");
    caps.setCapability("device", "Android");
    caps.setCapability("app-activity",
            "com.android.example.spinner.SpinnerActivity");
    caps.setCapability("takesScreenshot", true);
    caps.setCapability("version", "4.3");
    caps.setCapability("device ID", "5554");
    caps.setCapability("app",
            "E:\\eclipse\\SpinnerActivity\\bin\\SpinnerActivity.apk");

    RemoteWebDriver driver = new RemoteWebDriver(new URL(
            "http://localhost:4723/wd/hub/"), caps);