我想通过java代码将"http://yooz.ir/“的背景图像保存到我的磁盘中。这个图像每隔几天就会改变一次。它有一个下载链接blue arrow,但我找不到图像位置来通过代码保存它。我怎样才能找到这个图片在url内容中的位置,通过jsoup,htmlunit等?
发布于 2016-08-25 21:54:56
您输入了错误的url。下面是正确的一个:http://imgs.yooz.ir/yooz/walls/yooz-950602-2.jpg
发布于 2016-08-25 21:57:11
我看到这个元素填充了asynchronously,所以你需要使用一些webdriver自动化工具,最常见的是selenium
/*
import selenium, you can do it via maven;
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-server</artifactId>
<version>2.45.0</version>
</dependency>
*/
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.support.ui.ExpectedCondition;
import org.openqa.selenium.support.ui.WebDriverWait;
public class SaveImageFromUrl {
public static void main(String[] args) throws Exception {
// download chrome driver http://chromedriver.storage.googleapis.com/index.html
// or use firefox, w/e u like
System.setProperty("webdriver.chrome.driver", chromeDriverLocation);
WebDriver driver = new ChromeDriver(); // opens browsers
driver.get("http://yooz.ir/"); // redirect to site
// wait until element which contains the download link exist in page
new WebDriverWait(driver, 5).until(new ExpectedCondition<WebElement>() {
@Override
public WebElement apply(WebDriver d) {
return d.findElement(By.className("image-day__download"));
}
});
// get the link inside the element via queryselector
// https://developer.mozilla.org/en-US/docs/Web/API/Document/querySelector
String img2download = driver.findElement(By.cssSelector(".image-day__download a")).getAttribute("href");
System.out.println("img2download = " + img2download);
//TODO download..
driver.close();
}
}https://stackoverflow.com/questions/39147217
复制相似问题