java+selenium+new——操作单选下拉列表——select类

package rjcs;

import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.interactions.Actions;
import org.openqa.selenium.support.ui.Select;

public class xinkaishi 
{

    
    public static void main(String[] args)
    
    {
         System.setProperty("webdriver.firefox.bin","C:\\Program Files (x86)\\Mozilla Firefox\\firefox.exe");    //设置火狐的安装路径，防止系统找不到
            
         FirefoxDriver driver = new FirefoxDriver();        //初始化FireFox浏览器实例，并打开浏览器
         
        try
        {
             driver.manage().window().maximize();         //最大化窗口
             
             Thread.sleep(5000);    
             
             driver.navigate().to("http://www.baidu.com"); 
             
             Thread.sleep(5000);
             
             
             
             Actions action = new Actions(driver);
             
             action.moveToElement(driver.findElementByLinkText("设置")).perform();     //鼠标悬浮在 设置  元素上面
             
             driver.findElementByClassName("setpref").click();      // 打开搜索设置
             
             Thread.sleep(5000);
             
             Select dropList = new Select(driver.findElementByName("NR"));
             

             
             Thread.sleep(5000);
             
             
             
             
             System.out.println(dropList.getFirstSelectedOption().getText());  //查看刚开始默认选择的选项
             Boolean a = dropList.isMultiple();      //是否允许多选，允许多选返回true，否则 不允许返回false 
             System.out.println(a);  // 此处不允许多选，返回false
             Thread.sleep(5000);            
             
             
             




//selectByIndex()方法，通过索引进行选中，3个选项，索引从0开始，即   0，1，2
             
             dropList.selectByIndex(1);         //3个选项，索引从0开始，即   0，1，2
             System.out.println(dropList.getFirstSelectedOption().getText());
             Thread.sleep(5000);
             
             
             
             dropList.selectByIndex(2);
             System.out.println(dropList.getFirstSelectedOption().getText());
             Thread.sleep(5000);
             
             
             
             dropList.selectByIndex(0);
             System.out.println(dropList.getFirstSelectedOption().getText());
             Thread.sleep(5000);
             
             
             




//selectByVisibleText()方法，通过选项的文字进行选中
             
             dropList.selectByVisibleText("每页显示20条");
             System.out.println(dropList.getFirstSelectedOption().getText());
             Thread.sleep(5000);
             
             
             
             dropList.selectByVisibleText("每页显示50条");
             System.out.println(dropList.getFirstSelectedOption().getText());
             Thread.sleep(5000);
             
             
             
             dropList.selectByVisibleText("每页显示10条");
             System.out.println(dropList.getFirstSelectedOption().getText());
             Thread.sleep(5000);
             
             
             
             
             







//selectByValue()方法，使用下来列表的属性的value属性值进行选中操作
             
             dropList.selectByValue("20");
             System.out.println(dropList.getFirstSelectedOption().getText());
             Thread.sleep(5000);
             
             
             
             
             
             
             dropList.selectByValue("50");
             System.out.println(dropList.getFirstSelectedOption().getText());
             Thread.sleep(5000);
             
             
             
             
             
             
             dropList.selectByValue("10");
             System.out.println(dropList.getFirstSelectedOption().getText());
             Thread.sleep(5000);
             
             
             
             
             Thread.sleep(10000);
             
             
        }catch (Exception e) 
        {
            e.printStackTrace();
        }finally 
        {
            driver.quit();
        
         }
    }
    
    
    
}