I have been writing c#, html, js, jquery for awhile and been using F12 in chrome and IE to look at the html code to help me with some dom manipulation. I am curious if there is a way to do something similar to that context to look at a jsp page and manipulate it with javascript.
For example: viewsource on a jsp page and fill out a textbox on the jsp page with javascript.
I hope the question is clear and the example makes sense. I am not working on anything with this so I don't have a real example. This is more of curiosity. I know javascript but I am not familiar with java at all.
The jsp file gets compiled to a servlet on the Application Server which is then executed. This servlet then produces html on the server side, therefore you can not view the jsp source code client side (F12 in chrome). You can only view the generated output (html, css, js, ...).
Source: http://oreilly.com/catalog/jserverpages2/chapter/ch03.html
JSP is compiled and run on the server side--the same place you edit it (more or less).
Only HTML is sent to the client.
In addition,
You write in C#, so if you generate simple ASP.NET page and see how a dynamic page is being generated.
It's not JSP/Java but It have the same concept of dynamic pages.
Related
im working on a server-side html render.
The case: The user has a simpel page with 3 cells. In each cell he can fill the html, css and JS code. After that, it will be send to the server which render the html and css code considering the javascript code.
My idea was to "simulate" a headless-browser. Till now i just found PhantomJS but i think its not really comfortable.
My result should be only the rendered HTML DOM
thank you
Try headless Chrome, this works on all operating systems:
https://chromium.googlesource.com/chromium/src/+/lkgr/headless/README.md
On Linux you have one more option. You can run any normal browser with virtual screen buffer.
Thank you for your response. As far as i see i have to use node.js. Is there a way to stay in the java envoirment without node.js?
I use Java. I want to get web page source code but on the page works JavaScript and I want get code generated by JavaScript (code which we see in firebug in firefox)
Anyone knows what I should do?
To inspect the page after modification by JavaScript, you need a client-side JavaScript engine that can run the scripts and then let you inspect the DOM.
HtmlUnit can do this - it is a "GUI-Less browser for Java programs".
See also this question
However, this won't give you the exact original page source, because that has already been parsed into a DOM by this point.
I think you want to see the source code of DOM Elements created after the page load via AJAX.
If that´s what you want, the only way to see it is through a DOM inspector, like firebug in firefox or Developers Tools in Chrome.
Going to "View source code" only shows the source at load-time.
If I understand your question, yes your javascript objects can be passed back to your java backend either by a creating a html <form> element with inputelements, fill them with your values and then submit the form, or asynchronously via ajax/json (which doesn't require re-loading your web page). For both methods you need to configure an endpoint on your java side to receive the submitted data and return some kind of confirmation to the client, i.e. your javascript. I would recommend googling "jQuery.post" for the javascript side and finding some examples for your java backend.
in my project I need to read some web pages. Usually it is pretty easy: I read the source code using java classes, parse the output and save interesting data.
But sometimes it is harder; for example reading Google pages. I think it is because of javascript. Do you know to get the real web page code, I mean without javascript? For example if I analyse the page using the Firebug extension of Firefox I read exactly what I need: javascript is correctly replaced by its results. Any idea to do it using Java?
Thanks in advance
I am working with Liferay and I need to show a preview of HTML output of an URL as an embeded window in a JSP view. I am assessing different possibilities.
Store somewhat the interface to preview as a screenshot image and show it as an embeded image. Good thing is that formatting would be totally the same.
Parse URL output stream with a BufferedReader and clean all html, scripting, body tags with indexOf. Embed images as cid:
Some kind of include, jsp:include or liferay-util:include form direct URL of downloaded temporal HTML output
Any JQuery AJAX $().html() kind of solution
Any HTML-level solution in iframe, applet, frame, appletwindow or whatever if it exists
What do you think is the best or recommended way: simplest, reliable and exact looking? Any code or reference?
And in case I had to send it as a JavaMail Message content into an email direction?
Thank you!!
This should probably be done client-side, in Javascript, or even via iframes. Either put the iframes in the page directly, or have javascript code that generates the iframes, and point the iframes at the URL to be previewed. Keep it simple.
I need a solution for getting HTML content from a browser. As rendering in a browser, js will be ran, and if not, js won't be ran. So any html libraries like lxml, beautifulsoup and others are all not gonna work.
I've searched a project named pywebkitgtk, but it's purpose is to create a browser with a front end.
Is there any way to put a url into a "fake browser" and render it and run its all javascript and save it into a html file? I don't need any front-end, just back-end is ok.
I need to use Python or java to do that.
selenium-rc lets you drive an actual browser for your purpose, under control of any of several languages at your choice, which include both Python and Java. Check it out!
For a detailed example of use with Python, see here.