Question

我正在尝试在Google.com的前5页上打印所有结果链接的名称

情景是， 1）访问www.google.com并搜索内容。 2）在前5页打印所有结果链接的名称

我可以打印首页的所有结果链接，然后点击下一页链接。但第二页链接不打印。我认为原因可能是第二页中xpath的变化。如果是这样，我如何打印第2第3和第5页的所有链接。请帮助我解决这个问题。

package com;

import java.util.List;
import java.util.concurrent.TimeUnit;

import org.openqa.selenium.By;
import org.openqa.selenium.Keys;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.firefox.FirefoxProfile;
import org.openqa.selenium.firefox.internal.ProfilesIni;

public class Exercise2 {
static WebDriver d;
    public static void main(String[] args) throws InterruptedException {
        ProfilesIni prop = new ProfilesIni();
        FirefoxProfile seleniumProfile = prop.getProfile(("Selenium"));
         d = new FirefoxDriver();
        d.manage().window().maximize();
        d.manage().timeouts().implicitlyWait(20, TimeUnit.SECONDS);

        d.get("http://www.google.com");
        Thread.sleep(5000);
        d.findElement(By.name("q")).sendKeys("Selenium");
        d.findElement(By.name("q")).sendKeys(Keys.ENTER);

        Thread.sleep(5000);

        //Print names of all result links on first page.
        String part1 = "//div[@id='rso']/div[2]/div[";
        String part2  = "]/div/h3/a";

        for(int i=2;i<=5;i++){
            String part3 = "//div[@id='navcnt']/table/tbody/tr/td[";
            String part4 = "]";
            int a = 1;

            while(isElementPresent(part1+a+part2)){
                String text = d.findElement(By.xpath(part1+a+part2)).getText();
                System.out.println(text);
                a++;
            }
            Thread.sleep(5000);
            System.out.println("*************Next Page**********");
            Thread.sleep(5000);
            d.findElement(By.xpath(part3+i+part4)).click();
        }

}
    public static boolean isElementPresent(String xpathexp){
        List<WebElement> allList = d.findElements(By.xpath(xpathexp));
        //WebElement nextPages = d.findElement(By.xpath(nextPage1));
        if(allList.size()==0)
        {
            return false;
        }else{
            return true;
        }

    }

}

Answer 1

List<WebElements> links = driver.findElements(By.tagName("a"));

for(int i = 0 ; i < 5 ; i ++)
{
   string firstLink = links[i].getAttribute("href");
}

Answer 2

尝试以下代码。

▶ class Var
▷   def iv
▷     @iv ||= 42
▷   end
▷ end
▶ Var.new.instance_variables
#⇒ []
# the above is because instance variables are lazily instantiated
▶ v = Var.new
▶ v.iv
#⇒ 42
▶ v.instance_variables
#⇒ [ :@iv ]

}

如果有任何问题，请告诉我。

无法在Selenium的Google.com的前5页上打印所有结果链接的名称

2 个答案: