webdriver自动化实现区间查询

题目：请尝试写出以下自动化脚本：
Qunar机票搜索场景
访问Qunar机票首页，选择“单程”，输入出发、到达城市，选择today+7日后的日期，点“搜索”，跳转到机票单程搜索列表页。
在列表页停留1分钟，至到页面上出现“搜索结束”。
如果出现航班列表，对于出现“每段航班均需缴纳税费”的行随机点选“订票”按钮.
代码：

package week5;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

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.support.ui.ExpectedCondition;
import org.openqa.selenium.support.ui.WebDriverWait;

public class Day52 {
    public WebDriver driver;

    public void startfirefox(){
        driver= new FirefoxDriver();
        driver.manage().window().maximize();
        driver.get("/");
    }
    public void endfirefox(){
        driver.close();
    }
    public void inputfromandto(String fromcity,String tocity){
        //选择单程
        driver.findElement(By.id("searchTypeSng")).click();
        //输入出发站
        WebElement weblementElement = driver.findElement(By.xpath("//div[@id='js_flighttype_tab_domestic']//input[@name='fromCity']"));
        weblementElement.clear();
        weblementElement.sendKeys(fromcity);
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e1) {
            e1.printStackTrace();
        }
        //输入终点站
        WebElement webElement = driver.findElement(By.xpath("//div[@id='js_flighttype_tab_domestic']//input[@name='toCity']"));
        webElement.clear();
        webElement.sendKeys(tocity);
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e1) {
            e1.printStackTrace();
        }
        //输入当前日期的七天后日期
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        Calendar rightNow = Calendar.getInstance();
        rightNow.add(Calendar.DAY_OF_YEAR, 7);
        Date dt1 = rightNow.getTime();
        String reStr = formatter.format(dt1);
        WebElement webelemt = driver.findElement(By.xpath("//div[@id='js_flighttype_tab_domestic']//input[@name='fromDate']"));
        webelemt.clear();
        webelemt.sendKeys(reStr);
//        webelemt.click();
        //点击搜索
        WebElement element = driver.findElement(By.xpath("//div[@id='js_flighttype_tab_domestic']//button[text()='搜　索']"));
        element.click();
        //分析搜索结果
        boolean wait = false;
        try {
            wait = new WebDriverWait(driver, 50)
                    .until(new ExpectedCondition<Boolean>() {
                        WebElement webelement;

                        public Boolean apply(WebDriver driver) {
                            webelement = driver.findElement(By.xpath(".//*[@id='progTip']/span"));
                            System.out.println(webelement.getText());
                            return webelement.getText().contains("搜索结束");
                        }
                    });
        } catch (Exception e) {
            System.out.println("没有出搜索结束页面");
        }
        System.out.println(wait);
        if (wait){
            try {
                driver.findElement(By.xpath("//*[contains(@id,'itemBar')]//div//span[@class='highlight']/parent::p")).getText().contains("每段航班均需缴纳税费");
            } catch (Exception e) {
                System.out.println("不存在每段航班均需缴纳税费");
            }
            //点击订票
            List<WebElement> element1 = driver.findElements(By.xpath("//*[contains(@id,'itemBar')]//div//span[@class='highlight']/following::div[@class='a_booking']//span/b"));
            int order = (int) Math.round(Math.random() * (element1.size() - 1));
            System.out.println(order);
            element1.get(order).click();
        }else{
            System.out.println("搜索出问题，没达到搜索页面");
        }
    }
    public static void main(String[] args) {
        Day52 day52 =new Day52();
        day52.startfirefox();
        day52.inputfromandto("银川","南阳");
        day52.endfirefox();

    }

}