Selenium碰到的异常记录

Java版本的Selenium异常记录

 

1. 没有找到类的异常(NoClassDefFoundError)

异常如下:

Exception in thread "main" java.lang.NoClassDefFoundError: com/google/common/base/Function
    at com.yy.baidu.testBaidu.main(testBaidu.java:12)
Caused by: java.lang.ClassNotFoundException: com.google.common.base.Function
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 1 more

解决办法:

此问题通常的包引入的少了,少Selenium包,如下图,除了要引入selenium-java-2.52.0.jar包以外,还需要引入libs目录下的包。

package

2. 没有找到Firefox的路径

异常如下:

Exception in thread "main" org.openqa.selenium.WebDriverException: Cannot find firefox binary in PATH. Make sure firefox is installed. OS appears to be: WIN8_1
Build info: version: '2.52.0', revision: '4c2593c', time: '2016-02-11 19:03:33'
System info: host: 'DESKTOP-VFHU33A', ip: '192.168.3.115', os.name: 'Windows 8.1', os.arch: 'amd64', os.version: '6.3', java.version: '1.7.0_79'
Driver info: driver.version: FirefoxDriver
    at org.openqa.selenium.firefox.internal.Executable.<init>(Executable.java:74)
    at org.openqa.selenium.firefox.FirefoxBinary.<init>(FirefoxBinary.java:60)
    at org.openqa.selenium.firefox.FirefoxBinary.<init>(FirefoxBinary.java:56)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:120)
    at com.yy.baidu.testBaidu.main(testBaidu.java:12)

解决办法:

方法1. 重装Firefox,这个问题最简单的办法就是重新按照Firefox,稳稳的

方法2. 用System.setPropert方法设置webdriver.firefox.bin的值,如:

public class testBaidu {
    public static void main(String[] args){
 
        System.setProperty("webdriver.firefox.bin","D:\\Mozilla Firefox\\firefox.exe");
 
 
        System.out.println("srart selenium ");
        WebDriver driver = new FirefoxDriver();
        driver.get("http://www.baidu.com");
        WebElement txtbox = driver.findElement(By.id("kw"));
        txtbox.sendKeys("selenium java");
        WebElement btn = driver.findElement(By.id("su"));
        btn.click();
        System.out.println("end selenium");
    }
}

方法3. 用FirefoxBinary类和public FirefoxDriver(FirefoxBinary binary, FirefoxProfile profile)这个构造方法,直接上代码:

public class testBaidu {
    public static void main(String[] args){
 
        File pathToFirefoxBinary = new File("D:\\Mozilla Firefox\\firefox.exe");
        FirefoxBinary firefoxbin = new FirefoxBinary(pathToFirefoxBinary);
        WebDriver driver = new FirefoxDriver(firefoxbin,null);//这里使用这个构造方法。 
 
        System.out.println("srart selenium ");
        WebDriver driver = new FirefoxDriver();
        driver.get("http://www.baidu.com");
        WebElement txtbox = driver.findElement(By.id("kw"));
        txtbox.sendKeys("selenium java");
        WebElement btn = driver.findElement(By.id("su"));
        btn.click();
        System.out.println("end selenium");
    }
}

注:有人可能会不知道webdriver.firefox.bin,可以看一下源码,其中

org.openqa.selenium.firefox.internal.Executable.locateFirefoxBinaryFromSystemProperty()

方法第一句

    String binaryName = System.getProperty(FirefoxDriver.SystemProperty.BROWSER_BINARY);

说明默认的时候取的就是这个值,重新设置一下。

 

最后附上查看Selenium源码的方法

 

1. 右键selenium引入的jar包“selenium-java-2.52.0.jar”选择Properties

sele1

2. 点击External location -> External File... -> 找到“selenium-java-2.52.0-srcs.jar”

sele2

设置好了之后,就可以查看Selenium的源码了。

posted @ 2016-02-17 11:01  ﹏猴子请来的救兵  阅读(5167)  评论(0编辑  收藏