blocks|key|260905|text|几次快速搜索后，我找到了这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|260906|http://blogs.steeplesoft.com/posts/2012/grabbing-screenshots-of-failed-selenium-tests.html|offset|length|260907|基本上，他建议创建一个JUnit4+Rule，将测试Statement包装在try/catch块中，在该块中他调用：|style|CODE|260908|imageFileOutputStream.write(
++++((TakesScreenshot)+driver).getScreenshotAs(OutputType.BYTES));|code-block|syntax|javascript|260909|这对你的问题有效吗？|260910|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|2I|0|0|I|4|Q|9|0|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Y|8|@]|9|@$D|Z|E|10|1|11]]|A|$]]|$1|F|3|G|5|6|7|12|8|@$D|13|E|14|H|I]|$D|15|E|16|H|I]]|9|@]|A|$]]|$1|J|3|K|5|L|7|17|8|@]|9|@]|A|$M|N]]|$1|O|3|P|5|6|7|18|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|19|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|C]]]]

A few quick searches led me to this:

<a href="http://blogs.steeplesoft.com/posts/2012/grabbing-screenshots-of-failed-selenium-tests.html" rel="noreferrer">http://blogs.steeplesoft.com/posts/2012/grabbing-screenshots-of-failed-selenium-tests.html</a>

Basically, he recommends creating a JUnit4 <code>Rule</code> that wraps the test <code>Statement</code> in a try/catch block in which he calls:

<pre><code>imageFileOutputStream.write(
 ((TakesScreenshot) driver).getScreenshotAs(OutputType.BYTES));
</code></pre>

Does that work for your problem?

blocks|key|260941|text|如果您想在测试失败时截图，请添加这个类|type|unstyled|depth|inlineStyleRanges|entityRanges|data|260942|import+java.io.File;

import+java.io.IOException;

import+java.util.UUID;

import+org.apache.commons.io.FileUtils;

import+org.junit.rules.MethodRule;

import+org.junit.runners.model.FrameworkMethod;

import+org.junit.runners.model.Statement;

import+org.openqa.selenium.OutputType;

import+org.openqa.selenium.TakesScreenshot;

import+org.openqa.selenium.WebDriver;

public+class+ScreenShotOnFailure+implements+MethodRule+{

++++private+WebDriver+driver;

++++public+ScreenShotOnFailure(WebDriver+driver){
++++++++this.driver+=+driver;
++++}

++++public+Statement+apply(final+Statement+statement,+final+FrameworkMethod+frameworkMethod,+final+Object+o)+{
++++++++return+new+Statement()+{
++++++++++++@Override
++++++++++++public+void+evaluate()+throws+Throwable+{
++++++++++++++++try+{
++++++++++++++++++++statement.evaluate();
++++++++++++++++}+catch+(Throwable+t)+{
++++++++++++++++++++captureScreenShot(frameworkMethod.getName());
++++++++++++++++++++throw+t;
++++++++++++++++}
++++++++++++}

++++++++++++public+void+captureScreenShot(String+fileName)+throws+IOException+{
++++++++++++++++File+scrFile+=+((TakesScreenshot)+driver).getScreenshotAs(OutputType.FILE);
++++++++++++++++fileName+%2B=+UUID.randomUUID().toString();
++++++++++++++++File+targetFile+=+new+File("./Screenshots/"+%2B+fileName+%2B+".png");
++++++++++++++++FileUtils.copyFile(scrFile,+targetFile);
++++++++++++}
++++++++};
++++}
}|code-block|syntax|javascript|260943|在所有测试之前，您应该使用以下规则：|260944|@Rule
public+ScreenShotOnFailure+failure+=+new+ScreenShotOnFailure(driver));

@Before
public+void+before()+{
+++...
}|260945|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

If you want to take a screenshot on test failure, add this class
<pre><code>import java.io.File;

import java.io.IOException;

import java.util.UUID;

import org.apache.commons.io.FileUtils;

import org.junit.rules.MethodRule;

import org.junit.runners.model.FrameworkMethod;

import org.junit.runners.model.Statement;

import org.openqa.selenium.OutputType;

import org.openqa.selenium.TakesScreenshot;

import org.openqa.selenium.WebDriver;

public class ScreenShotOnFailure implements MethodRule {

 private WebDriver driver;

 public ScreenShotOnFailure(WebDriver driver){
 this.driver = driver;
 }

 public Statement apply(final Statement statement, final FrameworkMethod frameworkMethod, final Object o) {
 return new Statement() {
 @Override
 public void evaluate() throws Throwable {
 try {
 statement.evaluate();
 } catch (Throwable t) {
 captureScreenShot(frameworkMethod.getName());
 throw t;
 }
 }

 public void captureScreenShot(String fileName) throws IOException {
 File scrFile = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE);
 fileName += UUID.randomUUID().toString();
 File targetFile = new File(&quot;./Screenshots/&quot; + fileName + &quot;.png&quot;);
 FileUtils.copyFile(scrFile, targetFile);
 }
 };
 }
}
</code></pre>
And Before all tests, you should use this Rule:
<pre><code>@Rule
public ScreenShotOnFailure failure = new ScreenShotOnFailure(driver));

@Before
public void before() {
 ...
}
</code></pre>

When my test case fails, especially on our build server, I want to take a picture / screenshot of the screen to help me debug what happened later on. I know how to take a screenshot, but I was hoping for a way in JUnit to call my <code>takeScreenshot()</code> method if a test fails, before the browser is closed. 

No, I don't want to go edit our bazillions of tests to add a try/catch. I could maybe, just possibly be talked into an annotation, I suppose. All of my tests have a common parent class, but I can't think of anything I can do there to solve this.

Ideas?

Can Selenium take a screenshot on test failure with JUnit?

服务器

当我的测试用例失败时，尤其是在我们的构建服务器上，我想拍一张屏幕的照片/屏幕截图，以帮助我调试后面发生的事情。我知道如何截图，但我希望在浏览器关闭之前，如果测试失败，可以在JUnit中调用我的takeScreenshot()方法。不，我不想去编辑我们无数的测试来添加try/catch。我想，我可能，只是可能被说成是一个...

问Selenium可以在JUnit测试失败时截屏吗？
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