1、如果网络环境好的话，直接使用火狐浏览器访问https://addons.mozilla.org/en-US/firefox/addon/selenium-ide/安装即可

2、将本文件同级目录下的extensions文件夹拷贝到file对应的位置即可
driver = new FirefoxDriver();//profile.setPreference("browser.link.open_newwindow.restriction", 1);
//profile.setPreference("browser.link.open_newwindow", 2);
System.setProperty("webdriver.firefox.bin", "D://Program files//Develop Softwares//Mozilla Firefox//firefox.exe");
File file = new File("C://Users//DXZ-Peng.liu//AppData//Roaming//Mozilla//Firefox//Profiles//2perkbvl.default");
FirefoxProfile profile = new FirefoxProfile(file);

driver = new FirefoxDriver(profile);
//driver = new FirefoxDriver();
driver.get("http://www.baidu.com");

webdriver IDE安装教程