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
解決辦法有四個：
1.重新安裝firefox在默認路徑下；
| 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方法設置webdriver.firefox.bin的值 ；
3.利用setCapability進行設置 ；
4.用FirefoxBinary類和public FirefoxDriver(FirefoxBinary binary, FirefoxProfile profile)這個構造方法；
參考：http://sariyalee.iteye.com/blog/1688271