我正在使用代理连接到使用selenium的网站并测试一些东西，问题是一些代理速度非常慢并且使得事情效率非常低，但另一个问题是我无法捕获错误无论我做什么都继续下去。尝试过其他堆叠帖子的各种建议，但无济于事。
org.openqa.selenium.Proxy proxy = new org.openqa.selenium.Proxy();
proxy.setHttpProxy(ip+":"+port);
proxy.setSslProxy(ip+":"+port);
proxy.setFtpProxy(ip+":"+port);
DesiredCapabilities dc = DesiredCapabilities.firefox();
dc.setCapability(CapabilityType.PROXY, proxy);
WebDriver driver = new FirefoxDriver(dc);
try {
driver.manage().timeouts().pageLoadTimeout(15, TimeUnit.SECONDS);
driver.manage().timeouts().setScriptTimeout(15, TimeUnit.SECONDS);
driver.navigate().to("http://foo.bar");
} catch (Exception ex) {
ex.printStackTrace();
driver.quit();
driver = null;
break;
}
我将超时设置为15秒，因为它必须导航几页并且一些代理需要30-40秒才加载页面所以需要相当长的时间，是否真的有办法捕获错误
Timed out waiting for page load
我的另一个问题是，使用硒替代品会更容易吗？到目前为止，我有一些硒的问题似乎已经存在了一段时间，其他人的帖子判断
答案 0 :(得分：1)
scriptss，
在我看来，您需要使用ExplicitWaits来验证您的导航。 ExplicitWaits不是在驱动程序中使用隐式配置，而是允许更灵活的解决方案，具体取决于您的环境。根据我的经验，WebDriverWait类与ExpectedConditions一起解决了我的大多数问题。我尚未获得对驱动程序的代理支持，但它似乎与我迄今为止获得的信息一致。
话虽如此，我不完全确定为什么你没有看到被抛出的异常。当我遇到类似的问题时，我会将我的WebDriver包装在EventFiringWebDriver中，并查看WebDriverEventListener的onException消息是否在这些情况下被触发。
在下面的示例中，您需要填写代理IP和端口的常量，以及要转到的实际URL。在createParameters方法中，您还需要更新标题和部分URL的字符串以适合您的用例。
使用Java 8和Selenium v 2.47.2构建
import java.util.List;
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import org.junit.After;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.remote.CapabilityType;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.support.events.AbstractWebDriverEventListener;
import org.openqa.selenium.support.events.EventFiringWebDriver;
import org.openqa.selenium.support.ui.ExpectedCondition;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
import com.google.common.collect.Lists;
@RunWith(Parameterized.class)
public class ExplicitWaitNavigationTest {
/** IP configuration for the proxy.*/
private static final String PROXY_IP = "";
/** Port configuration for the proxy.*/
private static final int PROXY_PORT = 8080;
/** The url the test will navigate to.*/
private static final String TEST_URL = "http://the-internet.herokuapp.com/dropdown";
/** Maximum time to wait for a page to load.*/
private static final int PAGE_LOAD_SECONDS = 15;
/** Maximum time to wait for javascript to complete.*/
private static final int SCRIPT_LOAD_SECONDS = 15;
/** ExpectedCondition used to validate the navigation state.*/
private ExpectedCondition<Boolean> navTestCondition;
/** The URL to be tested in this instance.*/
private String url;
/** WebDriver reference used for testing navigation through proxy.*/
private WebDriver webDriver;
/**
* Assembles the Constructor arguments for testing.
* Due to test parameterization, each pair is run as a separate test.
* @return Object array of test parameters.
*/
@Parameters
public static Object[] createParameters() {
List<Object[]> params = Lists.newArrayList();
String url = TEST_URL;
//Test that url exactly matches
ExpectedCondition<Boolean> test = ExpectedConditions.urlToBe(url);
params.add(new Object[]{test, url});
//Test if the url matches a regex?
test = ExpectedConditions.urlMatches(url); //regex match? I'm not great with regex
params.add(new Object[]{test, url});
//Test if the url contains the base site, or other fragment information
test = ExpectedConditions.urlContains("dropdown");
params.add(new Object[]{test, url});
// Test if the page title exactly matches expectation.
test = ExpectedConditions.titleIs("The Internet");
params.add(new Object[]{test, url});
//Test if the page title somewhat matches expectation
test = ExpectedConditions.titleContains("Internet");
params.add(new Object[]{test, url});
return params.toArray(new Object[]{});
}
/**
* Turns off noisy logging that is on by default in the Selenium structure.
*/
@BeforeClass
public static void disableHttpUnitOutput() {
java.util.logging.Logger.getLogger("com.gargoylesoftware").setLevel(Level.OFF);
System.setProperty("org.apache.commons.logging.Log", "org.apache.commons.logging.impl.NoOpLog");
}
/**
* Constructor.
* @param waitCondition Expected condition to validate in this effort.
* @param url URL being navigated to.
*/
public ExplicitWaitNavigationTest(ExpectedCondition<Boolean> waitCondition, String url) {
this.navTestCondition = waitCondition;
this.url = url;
}
/**
* Configures the Driver for this test instance.
*/
@Before
public void setupDriver() {
org.openqa.selenium.Proxy proxy = new org.openqa.selenium.Proxy();
String proxyConfig = PROXY_IP + ":" + PROXY_PORT;
proxy.setHttpProxy(proxyConfig);
proxy.setSslProxy(proxyConfig);
proxy.setFtpProxy(proxyConfig);
DesiredCapabilities dc = DesiredCapabilities.firefox();
dc.setCapability(CapabilityType.PROXY, proxy);
FirefoxDriver ffd = new FirefoxDriver(dc);
ffd.manage().timeouts().pageLoadTimeout(PAGE_LOAD_SECONDS, TimeUnit.SECONDS);
ffd.manage().timeouts().setScriptTimeout(SCRIPT_LOAD_SECONDS, TimeUnit.SECONDS);
//XXX EventFiringWebDriver decoration
EventFiringWebDriver efwd = new EventFiringWebDriver(ffd);
efwd.register(new AbstractWebDriverEventListener() {
@Override
public void onException(Throwable throwable, WebDriver driver) {
System.out.println("Exception thrown from within the EventFiringWebDriver");
throwable.printStackTrace();
}
@Override
public void beforeNavigateTo(String url, WebDriver driver) {
System.out.println("Before NavigateTo :: " + url);
}
@Override
public void afterNavigateTo(String url, WebDriver driver) {
System.out.println("After NavigateTo :: " + url);
}
});
webDriver = efwd;
}
/**
* Test instance which attempts to navigate to the configured url and establishes an ExplicitWait to confirm
* navigation before continuing with the test event.
*/
@Test
public void testPageLoadFeedback() {
webDriver.navigate().to(url);
/*
* FIXME: How long are you actually willing to wait.
*
* It's my understanding that if the wait value is less than the implicit wait, then the looping capabilities of
* the ExplicitWait are never really leveraged.
*
* Note that the time value is the maximum time to wait. If the condition validates before the time specified
* then the process will continue.
*/
WebDriverWait wait = new WebDriverWait(webDriver, PAGE_LOAD_SECONDS * 2);
wait.pollingEvery(500, TimeUnit.MILLISECONDS);
wait.until(navTestCondition);
// If we get to this line then the test passed and we should be on the page.
System.out.println("Navigation Succeeded!");
}
/**
* Cleanup method to close any browsers used by the test session.
*/
@After
public void cleanupTest() {
//XXX: To leave the browser open, comment out the @After of this method.
for (String handle : webDriver.getWindowHandles()) {
webDriver.switchTo().window(handle);
webDriver.close();
}
}
}