blocks|key|278156|text|看起来您正在尝试导入一些google代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|278157|import+com.google.common.base.Function;|code-block|syntax|javascript|278158|它没有找到它的类函数。检查以确保所有必需的库都在您的构建路径中，并且您输入的包是正确的。|278159|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

It looks like you're trying to import some google code:

<pre><code>import com.google.common.base.Function;
</code></pre>

And it's not finding it the class Function. Check to make sure all the required libraries are in your build path, and that you typed the package correctly.

blocks|key|2986354|text|您的classpath上没有"google-collections"库。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2986355|有许多ways+to+add+libraries+to+your+classpath，因此请提供有关如何执行您的程序的更多信息。|2986356|如果是从命令行，则可以通过|2986357|java+-classpath+path/lib.jar+...|style|CODE|2986358|entityMap|0|LINK|mutability|MUTABLE|url|http://download.oracle.com/javase/6/docs/technotes/tools/windows/classpath.html|1|http://code.google.com/p/google-collections/|2^0|2|9|0|E|K|1|0|3|13|2|0|0|0|W|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]|$A|10|B|11|1|12]]|C|$]]|$1|D|3|E|5|6|7|13|8|@]|9|@$A|14|B|15|1|16]]|C|$]]|$1|F|3|G|5|6|7|17|8|@]|9|@]|C|$]]|$1|H|3|I|5|6|7|18|8|@$A|19|B|1A|J|K]]|9|@]|C|$]]|$1|L|3|-4|5|6|7|1B|8|@]|9|@]|C|$]]]|M|$N|$5|O|P|Q|C|$R|S]]|T|$5|O|P|Q|C|$R|U]]|V|$5|O|P|Q|C|$R|S]]]]

you don't have the <a href="http://code.google.com/p/google-collections/" rel="noreferrer">"google-collections"</a> library on your <a href="http://download.oracle.com/javase/6/docs/technotes/tools/windows/classpath.html" rel="noreferrer">classpath</a>.

There are a number of <a href="http://download.oracle.com/javase/6/docs/technotes/tools/windows/classpath.html" rel="noreferrer">ways to add libraries to your classpath</a>, so please provide more info regarding how you are executing your program.

if from the command line, you can add libraries to the classpath via 

<code>java -classpath path/lib.jar ...</code>

blocks|key|2986360|text|我也遇到了同样的问题，最后我发现我忘了添加selenium-server-standalone-version.jar。我只添加了客户端jar，selenium-java-version.jar。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2986361|希望这能有所帮助。|2986362|entityMap|0|LINK|mutability|MUTABLE|url|https://mvnrepository.com/artifact/org.seleniumhq.selenium/selenium-server-standalone|1|https://mvnrepository.com/artifact/org.seleniumhq.selenium/selenium-java^0|L|12|0|20|P|1|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]|$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]]]

I had the same problem, and finally I found that I forgot to add the <a href="https://mvnrepository.com/artifact/org.seleniumhq.selenium/selenium-server-standalone" rel="noreferrer">selenium-server-standalone-version.jar</a>. I had only added the client jar, <a href="https://mvnrepository.com/artifact/org.seleniumhq.selenium/selenium-java" rel="noreferrer">selenium-java-version.jar</a>.

Hope this helps.

blocks|key|276302|text|我遇到了同样的错误，经过调查，我发现selenium-API2.41.0库需要guava+15.0，但它被旧版本覆盖了，所以我通过在pom.xml中添加以下配置来声明guava+15.0为直接依赖：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|276303|<dependency>
++++++++<artifactId>guava</artifactId>
++++++++<groupId>com.google.guava</groupId>
++++++++<type>jar</type>
++++++++<version>15.0</version>
</dependency>|code-block|syntax|javascript|276304|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I encountered the same error and after the investigation, I found that library selenium-api 2.41.0 requires guava 15.0 but it was overridden by an older version so I declared guava 15.0 as a direct dependency by adding following configuration in pom.xml:

<pre><code>&lt;dependency&gt;
 &lt;artifactId&gt;guava&lt;/artifactId&gt;
 &lt;groupId&gt;com.google.guava&lt;/groupId&gt;
 &lt;type&gt;jar&lt;/type&gt;
 &lt;version&gt;15.0&lt;/version&gt;
&lt;/dependency&gt;
</code></pre>

blocks|key|282029|text|当我捕捉到异常java.lang.NoClassDefFoundError:+com/google/common/base/Function时，它是由项目库中的错误引起的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|282030|请在您的项目设置中检查它。对于Intellij+IDEA，请转到文件-项目结构，然后选择模块选项卡。我需要做的就是重新添加selenium库来解决这个异常|BOLD|282031|entityMap^0|7|1R|0|W|7|18|2|0^^$0|@$1|2|3|4|5|6|7|K|8|@$9|L|A|M|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|N|8|@$9|O|A|P|B|H]|$9|Q|A|R|B|H]]|D|@]|E|$]]|$1|I|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|J|$]]

When I caught the exception <code>java.lang.NoClassDefFoundError: com/google/common/base/Function</code> it was caused by errors in Project Libraries. 

Please check it in your project settings. For Intellij IDEA go to File - Project Structure and select Modules tab. All I needed to do to resolve this exception was re-adding the selenium library

blocks|key|3199846|text|我遇到了同样的问题，即使在安装'selenium-server-standalone-version.jar‘之后也失败了，我认为您还需要安装芭乐和芭乐-gwt+jar+(https://code.google.com/p/guava-libraries/)。我添加了所有这些jar，最后它在我的PC上工作。希望它能为遇到这个问题的其他人工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3199847|entityMap|0|LINK|mutability|MUTABLE|url|https://code.google.com/p/guava-libraries/^0|2E|16|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

I met the same problem and fail even after installing the 'selenium-server-standalone-version.jar', I think you need to install the guava and guava-gwt jar (<a href="https://code.google.com/p/guava-libraries/" rel="nofollow">https://code.google.com/p/guava-libraries/</a>) as well. I added all of these jar, and finally it worked in my PC. Hope it works for others meeting this issue.

blocks|key|2986427|text|对我来说，除了选择jar+-+selenium-java-2.45.0.jar之外，我还必须选择selenium根文件夹下的"libs“文件夹中的所有jar。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2986428|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

For me, in addition to selecting the jar - selenium-java-2.45.0.jar, I had to select all the jars in the "libs" folder under selenium root folder.

blocks|key|278212|text|请包含selenium单机版和lib文件夹的所有jar文件，此错误将得到解决|type|unstyled|depth|inlineStyleRanges|entityRanges|data|278213|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Please include all the jar files of selenium stand-alone and lib folder, then this error will resolved

blocks|key|2986455|text|解压"selenium-java-.zip“文件后，需要从IDE配置构建路径。导入"lib“文件夹下的所有jar文件，以及selenium独立服务器和Selenium+java版jar文件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2986456|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

After you extract your "selenium-java-.zip" file you need to configure your build path from your IDE. Import all the jar files under "lib" folder and both selenium standalone server &amp; Selenium java version jar files.

blocks|key|278267|text|我想在IDE之外尝试一个简单的类。所以从网站上下载selenium+zip并像这样运行这个类：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|278268|java+-cp+selenium-2.50.1/*:selenium-2.50.1/libs/*:.+my/package/MyClass+<params>|code-block|syntax|javascript|278269|我有一个问题，那就是我最初使用lib而不是libs。I不需要添加selenium独立jar。I没有添加selenium独立jar。这是Java+8，它可以理解类路径中的通配符。我认为java7也可以。|offset|length|style|CODE|BOLD|278270|entityMap^0|0|0|F|3|L|4|R|K|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Q|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|R|8|@$I|S|J|T|K|L]|$I|U|J|V|K|L]|$I|W|J|X|K|M]]|9|@]|A|$]]|$1|N|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|O|$]]

I wanted to try a simple class outside IDE and stuff. So downloaded selenium zip from website and run the class like this:

<pre><code>java -cp selenium-2.50.1/*:selenium-2.50.1/libs/*:. my/package/MyClass &lt;params&gt;
</code></pre>

I had the issue that I initially used <code>lib</code> instead of <code>libs</code>. I didn't need to add selenium standalone jar. This is Java 8 that understands wildcards in classpath. I think java 7 would also do.

blocks|key|278272|text|我也遇到了同样的问题，最后我发现我忘记添加selenium-server-standalone-version.jar。我只添加了客户端jar+selenium-java-version.jar。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|278273|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I had the same problem, and finally I found that I forgot to add the selenium-server-standalone-version.jar. I had only added the client jar, selenium-java-version.jar.

blocks|key|2986573|text|我也有同样的问题。我发现我忘记将selenium-2.53.0/selenium-java-2.53.0-srcs.jar文件添加到项目的参考库中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2986574|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I had the same issue. I found that I forgot to add selenium-2.53.0/selenium-java-2.53.0-srcs.jar file to my project's Reference library.

blocks|key|278288|text|我得到了相同的错误，但是如果您使用INTELIJ，如果您添加selenium库(如果您还没有添加)，它就会得到解决|type|unstyled|depth|inlineStyleRanges|entityRanges|data|278289|278290|+project>projectStructure>Module>%2B>add+selenium+jars+(从lib文件夹和外部文件夹)。|blockquote|278291|278292|278293|对其他IDE也需要做同样的事情，比如eclipse。|278294|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|M|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|N|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|O|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|P|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|Q|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|K|$]]

I got the same error, but it was resolved if you add the libraries of selenium (again if you haven't), if you are using INTELIJ

<blockquote>
 project>projectStructure>Module>+>add the selenium jars (both from lib folder and outside ones.). 
</blockquote>

Same needs to be done for other IDE's as well, like eclipse.

blocks|key|280052|text|this+is+for+chrome++
System.setProperty("webdriver.chrome.driver","D:\\Testing_offical\\chromedriver.exe");
driver+=new+ChromeDriver();
this+is+for+fire+fox+
System.setProperty("webdriver.gecko.driver",""D:\\Testing_offical\\geckodriver.exe"");
driver+=new+FirefoxDriver();|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|280053|模式：|unstyled|280054|System.setProperty("webdriver.gecko.driver","**Path+of+the+gecko+driver**+");|280055|注意:从这里下载gecko+:-+http://docs.seleniumhq.org/download/|offset|length|280056|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.seleniumhq.org/download/^0|0|0|0|H|10|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|V|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$B|C]]|$1|I|3|J|5|F|7|X|8|@]|9|@$K|Y|L|Z|1|10]]|A|$]]|$1|M|3|-4|5|F|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

<pre><code>this is for chrome 
System.setProperty("webdriver.chrome.driver","D:\\Testing_offical\\chromedriver.exe");
driver =new ChromeDriver();
this is for fire fox 
System.setProperty("webdriver.gecko.driver",""D:\\Testing_offical\\geckodriver.exe"");
driver =new FirefoxDriver();
</code></pre>

pattern :

<pre><code>System.setProperty("webdriver.gecko.driver","**Path of the gecko driver** ");
</code></pre>

Note download gecko from here :- <a href="http://docs.seleniumhq.org/download/" rel="nofollow noreferrer">http://docs.seleniumhq.org/download/</a>

When I executing the following code: 

<pre><code>public static void main(String[] args) {
 try {
 FirefoxDriver driver = new FirefoxDriver();
 driver.get("http:www.yahoo.com");
 } catch (NoClassDefFoundError ex) {
 System.out.println("error: " + ex.getStackTrace());
 }
}
</code></pre>

I'm facing the following error: 

<blockquote>
 error:[Ljava.lang.StackTraceElement;@80f4cb
 
 Exception in thread "main" java.lang.NoClassDefFoundError: com/google/common/base/Function
</blockquote>

 
Could someone help me to find the solution or reason for this?

NoClassDefFoundError in Java: com/google/common/base/Function

服务器

Java

当我执行以下代码时：public static void main(String[] args) {    try {        FirefoxDriver driver = new FirefoxDriver();        driver.get("http:www.yahoo.com");    } cat...

问Java中的函数:com/google/ NoClassDefFoundError /base/Function
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