●  出现的异常： 

Build info: version: '3.141.59', revision: 'e82be7d358', time: '2018-11-14T08:25:48'
System info: host: 'DESKTOP-H7TOMMO', ip: '192.168.64.1', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_131'
Driver info: driver.version: FirefoxDriver
	at org.openqa.selenium.firefox.FirefoxBinary.<init>(FirefoxBinary.java:100)
	at java.util.Optional.orElseGet(Unknown Source)
	at org.openqa.selenium.firefox.FirefoxOptions.getBinary(FirefoxOptions.java:216)
	at org.openqa.selenium.firefox.FirefoxDriver.toExecutor(FirefoxDriver.java:187)
	at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:147)
	at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:125)
	at test.main(test.java:13)

• 原因：firebox浏览器没有安装在默认的路径
• 解决方案：

        图中12、13行代码为火狐浏览器位置和geckodriver位置，根据你自己的情况而定！ 

   ●  成功：

●  项目背景：