I am trying to web scrape the website savevideo.tube using JSOUP.
When we put a link in the search bar and click the search button, the website dynamically loads and shows some download links that I want to scrape. My problem is how to load link in JSOUP with the link search without clicking the search button and showing the results (scraping the results).
Is there any way to search for a link and load it without clicking any button and get results?
I tried this code but I'm not getting the required result.
val result:Document = Jsoup.connect(Constants.BASE_URL)
.data("url", Constants.YOUTUBE_LINK)
.data("sid", "9823478982349872384789273489238904790234")
.userAgent("Mozilla").post()
JSOUP is a Static HTML parser. You cannot parse the content that is loaded by javascript dynamically. For that, you have to use a web drive.
The best web drives that you can use are
HTML Unit
JBrowserDriver
You can also use selenium but it may not be ideal for android
:-
As mentioned by ʀᴀʜɪʟ, JSOUP is a static HTML parser only. If you want to scrape a website that uses JS generated content you should probably take a look at skrape.it library
fun getDocumentByUrl(urlToScrape: String) = skrape(BrowserFetcher) { // <--- pass BrowserFetcher to include rendered JS
request { url = urlToScrape }
response { htmlDocument { this } }
}
fun main() {
// do stuff with the document
}
I have the following code:
doc = Jsoup.connect("http://www.amazon.com/gp/goldbox").userAgent("Mozilla").timeout(5000).get();
Elements hrefs = doc.select("div.a-row.layer");
System.out.println("Results:"+ hrefs); //I am trying to print out contents but not able to see the output.
Problem: Want to display all image src within the div with class name "a-row layer". But, i am unable to see the output.
What is the mistake with my query?
I have taken a look at the website and tested it myself. The issue seems to be that the piece of html code you want to extract (div.a-row.layer) is generated by JavaScript.
Jsoup does not support JavaScript and cannot parse those generated by it. You would need a headless web browser to deal with this, such as HTMLUnit.
I am trying to Jsoup to parse the html from the URL http://www.threadflip.com/shop/search/john%20hardy
Jsoup looks to only get the data from the line
<![CDATA[ window.gon= ..............
Does anyone know why this would be?
Document doc = Jsoup.connect("http://www.threadflip.com/shop/search/john%20hardy").get();
The site you try to parse loads most of its contents async via AJAX calls. JSoup does not interpret Javascript and therefore does not act like a browser. It seems that the store is filled by calling their api:
http://www.threadflip.com/api/v3/items?attribution%5Bapp%5D=web&item_collection_id=&q=john+hardy&page=1&page_size=30
So maybe you need to directly load the API Url in order to read the stuff you want. Note that the response is JSON, not HTML, so the JSoup html parser is of not much help here. But there is great JSON libraries available. I use JSON-Simple.
Alternatively, you may switch to Selenium webdriver, which actually remote controls a real browser. This should have no trouble accessing all items from the page.
The problem is that some of the urls I am trying to pull from have javascript slideshow containers that haven't loaded yet. I want to get the images in the slideshow but since this hasn't loaded yet it doesn't grab the element. Is there anyway to do this? This is what I have so far
Document doc = Jsoup.connect("http://news.nationalgeographic.com/news/2013/03/pictures/130316-gastric-brooding-frog-animals-weird-science-extinction-tedx/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+ng%2FNews%2FNews_Main+%28National+Geographic+News+-+Main%29").get();
Elements jpg = doc.select("img[src$=.jpg]");
jsoup can't handle javascript, but you can use an additional library for this:
Parse JavaScript with jsoup
Trying to parse html hidden by javascript
What I need to do is browse to a webpage, login, then browse to another webpage on that site that requires you to be logged in, so it needs to save cookies. After that, I need to click an element on that page, in which I would fill out the form and get the message that the webpage returns to me. The reason I need to actually go to the page and click the button as suppose to just navigating directly to the link is because the you are assigned a session ID every time you log in and click the link, and its always different. The button looks like this, its not a normal href link:
<span id=":tv" idlink="" class="sA" tabindex="0" role="link">Next</span>
Anyway, what would be the easiest way to do this? Thanks.
Update:
After trying HTMLunit, and other headless browser libraries, it doesnt seem that its happening using anything "headless." Another thing that I recently found out about this page is that that all the HTML is in some weird format... Its all inside a script tag. Here is a sample.
"?ui\x3d2\x26view\x3dss\x26mset\x3dmain\x26ver\x3d-68igm85d1771\x26am\x3d!Zsl-0RZ-XLv0BO3aNKsL0sgMg3nH10t5WrPgJSU8CYS-KNWlyrLmiW3HvC5ykER_n_5dDw\x26fri"],"http://example.com/?ctx\x3d%67mail\x26hl\x3den",,0,"Gmail","Gmail",[["us","c130f0854ca2c2bb",[["n"],["m","New features!"],["u"],["k","0"],["p","1000:500000,10,200000,5,100000,3,75000,2,0,1"],["h","https://survey.googleratings.com/wix/p1679258.aspx?l\x3d1033"],["at","query,5,contacts,5,adv,5,cf,5,default,20"],["v","https://www.youtube.com/embed/Ra8HG6MkOXY?showinfo\x3d0"],
When I do inspect element on the button, the HTML code that I posted above for the button comes up, but not when doing view source. Basically, what I am going to need to do is use some sort of GUI and have the user navigate to the link and then have the program fill out the info. Does anyone know how I can do this? Thanks.
Have a look at the 5 Minute Getting Started Guide for Selenium: http://code.google.com/p/selenium/wiki/GettingStarted
On the login page, look at the form's HTML to see the url it posts to and the url parameters. Then request that url with the same parameters filled in with correct info, and make sure to save all the cookie headers to send to the second page. Then use an html parser to find your link. There are several html parsers available on sourceforge, and you could even try java's built in xml parsers, though if the site has even a tiny html mistake they will glitch.
EDIT didn't notice the fact that it is not a normal link. In that case you will need to look at the site's javascript to see where the link leads. If the link requires javascript to run, it gets more complicated. Java is not able to execute browser javascript, but I found a library called DJ native swing which includes a web browser class that you can add to jframes. It uses your native browser to render, and to run javascript.
This should be possible in Selenium as others have noted.
I have used Selenium to login then crawl a site and discover every permuation of values for every form on the site (30+ forms). These values are later used to fill and submit the form with a specific perumation of values. This site was very JS/jQuery heavy and I used Selenium's built-in support of javascript executor, css selectors, and XPath to accomplish this.
I implemented HtmlUnit and HttpUnit as faster alternatives, but found they were not as reliable as Selenium given the JS semantics of the site I was crawling.
It's hard to give you code on how to accomplish it because your Selenium implementation will be quite page-specific and I can't look at the page you're coding against to figure out what's going on with that button script junk. However, I have include some possibly relevant selenium code (Java) snippets:
Element element = driver.findElements(By.id(value)); //find element on page
List<Element> buttons = parent.findElements(By.xpath("./tr/td/button")); //find child element
button.click();
element.submit() //submit enclosing form
element.sendKeys(text); //enter text in an input
String elementText = (String) ((JavascriptExecutor) driver).executeScript("return arguments[0].innerText || arguments[0].textContent", element); //interact with a selenium element via JS
If you are coding similar functions on different pages, then PageObjects behind interfaces can help.
The link Anew posted is a good starting point and good ol' StackOverflow has answers to just about any Selenium problem ever.
Instead of trying to browse around programmatically, try executing the login request and save the cookies then set those in the next request to the form post.
HTMLUnit is pretty bad at processing JavaScript, the Rhino JS library produces often errors (actually no errors is much the exception). I would advise to use Selenium, which is basically a framework to control headless browsers (chrome, firefox based).
For your question, the following code would do the work
selenium.open(myurl);
selenium.click("id=:tv");
You then have to wait for the page to load
selenium.waitForPageToLoad(someTime);
I would recommend htmlunit any day. It's a great library.
First, check out their web page(http://htmlunit.sourceforge.net/) to get htmlunit up and running. Make sure you use the latest snapshot(2.12 when writing this)
Try these settings to ignore pretty much any obstacle:
WebClient webClient = new WebClient(BrowserVersion.FIREFOX_17);
webClient.getOptions().setRedirectEnabled(true);
webClient.getOptions().setCssEnabled(false);
webClient.getOptions().setThrowExceptionOnScriptError(false);
webClient.getOptions().setThrowExceptionOnFailingStatusCode(false);
webClient.getOptions().setUseInsecureSSL(true);
webClient.getOptions().setJavaScriptEnabled(true);
webClient.getCookieManager().setCookiesEnabled(true);
Then when fetching your page, make sure you wait for background Javascript before doing anything with the page, like posting a login form:
//Get Page
HtmlPage page1 = webClient.getPage("https://login-url/");
//Wait for background Javascript
webClient.waitForBackgroundJavaScript(10000);
//Get first form on page
HtmlForm form = page1.getForms().get(0);
//Get login input fields using input field name
HtmlTextInput userName = form.getInputByName("UserName");
HtmlPasswordInput password = form.getInputByName("Password");
//Set input values
userName.setValueAttribute("MyUserName");
password.setValueAttribute("MyPassword");
//Find the first button in form using name, id or xpath
HtmlElement button = (HtmlElement) form.getFirstByXPath("//button");
//Post by clicking the button and cast the result, login arrival url, to a new page and repeat what you did with page1 or something else :)
HtmlPage page2 = (HtmlPage) button.click();
//Profit
System.out.println(page2.asXml());
I hope this basic example will help you!