第三步：新建一个TestNg Class，把excel数据填写到测试界面，具体代码如下：
　　CODE:
import java.io.File;
import java.util.List;
import java.util.concurrent.TimeUnit;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.firefox.FirefoxProfile;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
import File.ExcelWorkBook;
public class LoginCenter {
private WebDriver driver;
private String url;
String sourceFile="你文件的路径和文件名称";
@BeforeClass
public void testBefore(){
//设置firefox浏览器
FirefoxProfile file=new FirefoxProfile(new File("C:\Users\qinfei\AppData\Roaming\Mozilla\Firefox\Profiles\t5ourl6s.selenium"));
driver=new FirefoxDriver(file);
url="你的测试地址";
}
@Test
public void login() throws Exception{
//初始化ExcelWorkBook Class
ExcelWorkBook excelbook=new ExcelWorkBook();
//进入到你的测试界面
driver.get(url);
driver.manage().timeouts().implicitlyWait(30，TimeUnit.SECONDS);
try{
//把取出的username放在userlist集合里面
List<string> userList=excelbook.readUsername(sourceFile);
//把取出的password放在passlist集合里面
List</string><string> passList=excelbook.readPassword(sourceFile);
//把取出来的值，输入到界面的输入框中
int usersize=userList.size();
for(int i=0;i<usersize ;i++){
//通过css定位到username输入框
WebElement username=driver.findElement(By.cssSelector("input[name="j_username"]"));
//通过css定位到password输入框
WebElement password=driver.findElement(By.cssSelector("input[name="j_password"]"));
//通过xpath定位登录按钮
WebElement submit=driver.findElement(By.xpath("//button//span[contains(text()，'登录')]"));
//清除username输入框的内容
username.clear();
//把list中数据一个一个的取出来
String name=userList.get(i);
//然后填写到username输入框
username.sendKeys(name);
for(int j=0;j<passList.size();j++){
password.clear();
String pass=passList.get(j);
password.sendKeys(pass);
}
//点击登录按钮
submit.click();
driver.manage().timeouts().implicitlyWait(30，TimeUnit.SECONDS);
//通过xpath定位登出按钮
WebElement logoutButton=driver.findElement(By.xpath("//button//span[contains(text()，'登出')]"));
logoutButton.click();
driver.manage().timeouts().implicitlyWait(30，TimeUnit.SECONDS);
}
}catch(Exception e){
e.printStackTrace();
}
}
}