java selenium启动火狐浏览器报错：Cannot find firefox binary in PATH. Make sure firefox is installed. OS appears to be: VISTA Build info: version: '3.8.1', revision: '6e95a6684b', time: '2017-12-01T19:05:14.666Z

Cannot find firefox binary in PATH. Make sure firefox is installed. OS appears to be: VISTA Build info: version: '3.8.1', revision: '6e95a6684b', time: '2017-12-01T19:05:14.666Z'

解决方法：

package my_automation;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;

public class open_browser_01 {

    public static void main(String[] args) throws InterruptedException {
        // E:Program Files (x86)Mozilla Firefox
        //System.setProperty("webdriver.gecko.driver", "E:\webdriver\geckodriver.exe");
        System.setProperty("webdriver.firefox.bin", "E:\Program Files (x86)\Mozilla Firefox\firefox.exe");
        WebDriver driver = new FirefoxDriver();
        driver.get("https://www.baidu.com");
        driver.manage().window().maximize();
        Thread.sleep(5000);
        driver.quit();

    }

}

FirefoxDriver调用firefox浏览器的安装路径应为C盘的默认目录下，若firefox安装在其他目录下执行时会报错： 
Cannot find firefox binary in PATH. Make sure firefox is installed. OS appears to be: XP 
Build info: version: '2.25.0', revision: '17482', time: '2012-07-18 21:09:54' 
System info: os.name: 'Windows XP', os.arch: 'x86', os.version: '5.1', java.version: '1.6.0_10' 
这是因为找不到firefox的原因。 
解决办法： 
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 Firefoxfirefox.exe

2.直接用System.setProperty方法设置webdriver.firefox.bin的值 

package selenium.test.googleSearch;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.*;
public class BaiduFirefoxDriver {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        System.setProperty("webdriver.firefox.bin", "D:\Program Files\Mozilla Firefox\firefox.exe");
        WebDriver driver=new FirefoxDriver();
        driver.get("http://www.baidu.com/");
    }

}

3.利用setCapability进行设置 

package selenium.test.googleSearch;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.*;
import org.openqa.selenium.remote.DesiredCapabilities;
public class BaiduFirefoxDriver {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        DesiredCapabilities capability=DesiredCapabilities.firefox();
        capability.setCapability("firefox_binary",
        "D:\Program Files\Mozilla Firefox\firefox.exe");
        WebDriver driver = new FirefoxDriver(capability);
        driver.get("http://www.baidu.com/");
    }

}

4.用FirefoxBinary类和public FirefoxDriver(FirefoxBinary binary, FirefoxProfile profile)这个构造方法 

package selenium.test.googleSearch;

import java.io.File;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.*;
public class BaiduFirefoxDriver {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        File pathToFirefoxBinary = new File("D:\Program Files\Mozilla Firefox\firefox.exe");
        FirefoxBinary firefoxbin = new FirefoxBinary(pathToFirefoxBinary);
        WebDriver driver = new FirefoxDriver(firefoxbin,null);
        driver.get("http://www.baidu.com/");
    }

}