在 Java 上使用 Selenium 时遇到问题。我正在尝试遵循此页面上的示例: http ://code.google.com/p/selenium/wiki/GettingStarted
我正在输入这个:
$ javac -cp . -cp ~/Downloads/selenium-2.20.0/selenium-java-2.20.0-srcs.jar -cp ~/Downloads/selenium-2.20.0/selenium-java-2.20.0.jar -g Example.java
得到这个:
alis-mac-pro:selenium ali$ java ExampleException in thread "main" java.lang.NoClassDefFoundError: Example (wrong name: org/openqa/selenium/example/Example)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
我将示例中的代码粘贴到 Example.java 中。
更新
irc.freenode.net 上#java 上的一个好心人告诉我将我的条目链接到类路径中。所以,而不是:
$ javac -cp . -cp ~/Downloads/selenium-2.20.0/selenium-java-2.20.0-srcs.jar -cp ~/Downloads/selenium-2.20.0/selenium-java-2.20.0.jar -g Example.java
我用了:
javac -cp .:~/Downloads/selenium-2.20.0/selenium-java-2.20.0-srcs.jar:~/Downloads/selenium-2.20.0/selenium-java-2.20.0.jar -g Example.java
伟大的!:-) 但现在出现了新错误:
Example.java:3: cannot find symbol
symbol : class By
location: package org.openqa.selenium
import org.openqa.selenium.By;
^
Example.java:4: cannot find symbol
symbol : class WebDriver
location: package org.openqa.selenium
import org.openqa.selenium.WebDriver;
^
Example.java:5: cannot find symbol
symbol : class WebElement
location: package org.openqa.selenium
import org.openqa.selenium.WebElement;
^
Example.java:6: package org.openqa.selenium.htmlunit does not exist
import org.openqa.selenium.htmlunit.HtmlUnitDriver;
^
Example.java:13: cannot find symbol
symbol : class WebDriver
location: class org.openqa.selenium.example.Example
WebDriver driver = new HtmlUnitDriver();
^
Example.java:13: cannot find symbol
symbol : class HtmlUnitDriver
location: class org.openqa.selenium.example.Example
WebDriver driver = new HtmlUnitDriver();
^
Example.java:19: cannot find symbol
symbol : class WebElement
location: class org.openqa.selenium.example.Example
WebElement element = driver.findElement(By.name("q"));
^
Example.java:19: cannot find symbol
symbol : variable By
location: class org.openqa.selenium.example.Example
WebElement element = driver.findElement(By.name("q"));
^
8 errors
更新
我试过了:
$ jar tf ~/Downloads/selenium-2.20.0/selenium-java-2.20.0.jar
但是我看到了 org.openqa.selenium.By 类,例如,所以看起来我没有丢失任何包。
更新
好的!:-) 我删除了包说明符。我执行了:
$ javac -classpath ~/Downloads/selenium-2.20.0/selenium-java-2.20.0.jar Example.java
这是评论者给我的,除了我添加了.jar的完整路径。然后我执行:
$ java -cp .:~/Downloads/selenium-2.20.0/selenium-java-2.20.0.jar Example
这给了我:
Exception in thread "main" java.lang.NoClassDefFoundError: org/openqa/selenium/WebDriver
Caused by: java.lang.ClassNotFoundException: org.openqa.selenium.WebDriver
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
更新
欢呼!胜利,感谢 Mike Kwan。以下是有效的:
alis-mac-pro:selenium ali$ javac -cp ".:/Users/ali/Downloads/selenium-2.20.0/selenium-java-2.20.0.jar:/Users/ali/Downloads/selenium-2.20.0/selenium-java-2.20.0-srcs.jar:/Users/ali/Downloads/selenium-2.20.0/libs/*" Example.java
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
alis-mac-pro:selenium ali$ java -cp ".:/Users/ali/Downloads/selenium-2.20.0/selenium-java-2.20.0.jar:/Users/ali/Downloads/selenium-2.20.0/selenium-java-2.20.0-srcs.jar:/Users/ali/Downloads/selenium-2.20.0/libs/*" Example
Page title is: Cheese! - Google Search
顺便说一句,我添加了“-cp”选项的最后一部分(用于“libs/*”),因为这是我下载 Selenium / WebDriver 内容时 HTMLUnit 所在的位置。