如何制作一个程序,循环遍历instagram上所有已保存的照片

时间:2019-02-09 12:36:16

标签: java selenium instagram

我正在创建一个程序,用于从页面的“已保存”区域保存instagram照片。 有2个元素:

  • 雪佛龙”,可让您在多出版物中切换照片;
  • 向右箭头”,它使您可以移至下一个出版物。

enter image description here

我想创建一个程序来保存所有保存的照片。如果有shevron,则程序应在多张照片出版物中循环浏览所有照片(在可用时单击shervor )。如果没有可用的shevron,则程序应移至下一张保存的照片(单击下一个箭头)。

我的问题是:如何为以下各项写适当的“ IF子句”:1)首先在多重出版物中循环播放,然后2)然后(当多重酒吧中的所有照片都将完成时)转到下一个出版物

到目前为止,我有以下代码:

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
import org.openqa.selenium.By;
import org.openqa.selenium.WebElement;

import java.util.List;

public class TestSelenium {
    public static void main(String[] args){
        WebElement img;
        String src;
        int i =0;

// Set webdriver option
        System.setProperty("webdriver.chrome.driver", "C:\\Program Files (x86)\\Common Files\\Oracle\\Java\\Webdrivers\\chromedriver.exe");
        WebDriver driver = new ChromeDriver();
        driver.get("https://www.instagram.com/accounts/login/");
// Set waits
        WebDriverWait wait = new WebDriverWait(driver, 5);

// Write down the login
        wait.until(ExpectedConditions.visibilityOfElementLocated(By.cssSelector("input[name='username']"))).sendKeys("%%MY_INSTA_LOGGIN%%");
// Write down the password
        wait.until(ExpectedConditions.visibilityOfElementLocated(By.cssSelector("input[name='password']"))).sendKeys("%%MY_INSTA_PASSWORD%%");
// Click on the Signin button
        wait.until(ExpectedConditions.visibilityOfElementLocated(By.cssSelector("button[type='submit']"))).click();

// Go to the saved page
        wait.until(ExpectedConditions.visibilityOfElementLocated(By.cssSelector("div[class='SKguc']"))).click();
        driver.get("https://www.instagram.com/aleksandrqa/saved/");

// Click on the first element
        wait.until(ExpectedConditions.visibilityOfElementLocated(By.cssSelector("div[class='eLAPa']"))).click();

            // Click on the next chevron
            wait.until(ExpectedConditions.visibilityOfElementLocated(By.cssSelector("a[class='SWk3c  Zk-Zb coreSpriteRightChevron']"))).click();

            // Click on the next arrow
            wait.until(ExpectedConditions.visibilityOfElementLocated(By.cssSelector("a[class='HBoOv coreSpriteRightPaginationArrow']"))).click();

// TODO
// Save all photos URLs

    }
}

1 个答案:

答案 0 :(得分:1)

您可以使用下面的xpath标识下一个图像>箭头:

String xpath = "//div[contains(@class, 'RightChevron')]";

如果您移至最后一个图像,则上面的xpath将不会返回任何匹配项,因为最后一个/单个图像没有该图像的>箭头。

要检查定位器是否存在而不处理任何异常,可以使用如下所示的findElements()方法:

List<WebElement> imageArrow = driver.findElements(By.xpath(xpath));
if(imageArrow.size() > 0) {
    System.out.println("=> The image arrow is present...");
    // Perform some action here
} else {
    System.out.println("=> The image arrow is not present...");
}

如果列表大小大于零,则没有箭头,否则,下面的代码将循环遍历,直到大小大于零,然后单击图像箭头。

boolean isThereAnArrow = true;
while(isThereAnArrow) {
    final String xpath = "//div[contains(@class, 'RightChevron')]";
    List<WebElement> imageArrow = driver.findElements(By.xpath(xpath));
    if(imageArrow.size() > 0) {
        System.out.println("=> The image arrow is present...");
        imageArrow.get(0).click(); // Clicking on the image arrow
    } else {
        System.out.println("=> The image arrow is not present...");
        isThereAnArrow = false; // If there is no match then it will help us to break the loop
    }

}

与上面的内容相同,您可以在>箭头旁边检查帖子。下面是整个代码,如果有图像>,请单击图像上的箭头,否则将单击下一个发布按钮,直到出现一些帖子为止。

boolean isThereNextPostArrow = true;
while(isThereNextPostArrow) {
    // Checks for the next '>' image arrow, if not then will break the loop
    // ---------------------------------------------------------------------------
    boolean isThereAnArrow = true;
    while(isThereAnArrow) {
        final String xpath = "//div[contains(@class, 'RightChevron')]";
        List<WebElement> imageArrow = driver.findElements(By.xpath(xpath));
        if(imageArrow.size() > 0) {
            System.out.println("=> The image arrow is present...");

            // Do something here

            imageArrow.get(0).click(); // Clicking on the image arrow
        } else {
            System.out.println("=> The image arrow is not present...");
            isThereAnArrow = false; // If there is no match then it will help us to break the loop
        }
    }
    // ---------------------------------------------------------------------------
    // Checks for the next '>' post arrow, if not then will break the loop
    List<WebElement> nextPost = driver.findElements(By.xpath("//a[contains(@class, 'PaginationArrow')]"));
    if(nextPost.size() > 0) {
        System.out.println("=> The next post arrow is there...");
        nextPost.get(0).click(); // Clicking on the next post
    } else {
        System.out.println("=> The next post arrow is not there...");
        isThereNextPostArrow = false; // If there is no match then it will help us to break the outer loop
    }
}

希望对您有帮助...