RFT的异常处理方式

在RFT中，异常处理的方式与QTP有所不同。QTP中的异常处理主要依赖VB Script的On Error Resume Next以及恢复场景（Recovery Scenario）的机制。

在RFT中，由于脚本继承于RationalTestScript，因此处理可以在脚本中使用JAVA的try-catch语句做一般的异常处理外，还可以重写IobjectManagerEventListener接口的各种事件，例如找到多个相同对象时的onAmbiguousRecognition事件、找不到对象时的onObjectNotFound事件等。

下面的脚本重写了onAmbiguousRecognition事件进行定制处理，testObjectMethodState对象的findObjectAgain方法让RFT再次查找对象。

public void onAmbiguousRecognition(ITestObjectMethodState testObjectMethodState,

TestObject[] choices,

int[] scores)

{

System.out.println("有"+choices.length+"个相同的对象！");

for(int i=1;i<choices.length;i++)

{

TopLevelSubitemTestObject window = (TopLevelSubitemTestObject)choices[i];

window.close();

}

// 再次查找对象

testObjectMethodState.findObjectAgain();

}

以下脚本重写了onObjectNotFound事件。（参考RFT的帮助文档Handling unexpected active window）

/**

* Overrides the base implementation of onObjectNotFound. Whenever

* this event occurs, look through all the active domains (places

* where objects might be found). For HTML domains (Java

* and other domains are skipped) finds all the top objects.

* If the top object is an Html Dialog,

* types an Enter key to dismiss the dialog.

* Logs a warning when this happens.

*/

public void onObjectNotFound(ITestObjectMethodState testObjectMethodState)

{

if (!testObjectMethodState.getTestObject().

getPropertyFromMap(IMapPropertyName.DOMAIN).equals("Html"))

{

return;

}

boolean dismissedAWindow = false;

DomainTestObject domains[] = getDomains();

for (int i = 0; i < domains.length; ++i)

{

if (domains[i].getName().equals("Html"))

{

// HTML domain is found.

TestObject[] topObjects = domains[i].getTopObjects();

if (topObjects != null)

{

try

{

for (int j = 0; j < topObjects.length; ++j)

{

if (topObjects[j].getProperty(".class").equals("Html.Dialog"))

{

// A top-level HtmlDialog is found.

logWarning("HtmlScript.onObjectNotFound - dismissing dialog.");

try

{

dismissedAWindow = true;

((TopLevelTestObject)topObjects[j]).inputKeys("{enter}");

}

catch(RuntimeException e) {}

}

}

}

finally

{

//unregister all references to top objects

unregister(topObjects);

}

}

}

}

if (dismissedAWindow)

{

// try again

testObjectMethodState.findObjectAgain();

}

else

{

logWarning("HtmlScript.onObjectNotFound; no Html Dialog to dismiss");

}

}