在RFT中如何等待浏览器处于Ready状态？

在RFT中，如何等待一段时间，让浏览器启动并加载页面处于Ready状态？下面的代码可以实现：

closeIEBrowsers();

startBrowser("http://blog.youkuaiyun.com/testing_is_believing");

if(waitForReady())

System.out.println("Ready!");

else

System.out.println("NOT Ready!");

关闭所有IE浏览器的方法closeIEBrowsers，参见：

http://blog.youkuaiyun.com/Testing_is_believing/archive/2010/01/22/5233918.aspx

waitForReady方法如下所示：

public static boolean waitForReady() {

long maxWaitTimeMillis = 60000;

//get start time so can determine timeout

long startTime = System.currentTimeMillis();

TestObject to = findBrowser();

while ((to ==null) && ((System.currentTimeMillis() - startTime) < maxWaitTimeMillis))

{

sleep(10);

to = findBrowser();

}

if (to == null)

return false;

//get start time again for next timeout

startTime = System.currentTimeMillis();

while (!isReady(to) && (System.currentTimeMillis() - startTime) < maxWaitTimeMillis)

sleep(2);

if (isReady(to)) {

RationalTestScript.unregister(new Object[]{to});

return true;

}

else {

RationalTestScript.unregister(new Object[]{to});

return false;

}

}

通过获取测试对象的readyState属性值来判断页面是否加载完成：

public static boolean isReady(TestObject to) {

return Integer.parseInt(to.getProperty(".readyState").toString()) == 4;

}

查找浏览器实例的方法：

public static BrowserTestObject findBrowser() {

DomainTestObject domains[] = getDomains();

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

try {

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

//We found an Html domain.

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

if (topObjects != null) {

try {

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

if (topObjects[j] instanceof BrowserTestObject)

{

return (BrowserTestObject)topObjects[j];

}

}

} catch (Exception e) {

System.out.println("Exception in findBrowser: " + e);

e.printStackTrace();

}

}

}

} catch (com.rational.test.ft.TargetGoneException e) {

//noop - continue if target has since disappeared

}

}

//if we get here, we didn't find a browser

return null;

}