org.openqa.selenium.WebDriverException: Cannot find firefox binary in PATH. Make sure firefox is installed. OS appears to be: VISTA
Build info: version: \'2.48.2\', revision: \'41bccdd\', time: \'2015-10-09 19:59:12\'
System info: host: \'MININT-RQ9DS4O\', ip: \'30.10.3.30\', os.name: \'Windows 7\', os.arch: \'amd64\', os.version: \'6.1\', java.version: \'1.7.0_60\'
Driver info: driver.version: FirefoxDriver
解决办法有四个：
1.重新安装firefox在默认路径下；
| OS | Expected Location of Firefox |
| Linux | firefox (found using "which") |
| Mac | /Applications/Firefox.app/Contents/MacOS/firefox |
| Windows | %PROGRAMFILES%\Mozilla Firefox\firefox.exe |
2.直接用System.setProperty方法设置webdriver.firefox.bin的值 ；
3.利用setCapability进行设置 ；
4.用FirefoxBinary类和public FirefoxDriver(FirefoxBinary binary, FirefoxProfile profile)这个构造方法；
参考：http://sariyalee.iteye.com/blog/1688271