Welcome to TechScreen

Welcome to the TechScreen site. This side shall support the exchange of knowledge in the domain of Web Engineering and related aspects. As a side effect, this side is used for research on knowledge management technologies. User can pose challenges in the problem domain and can participate in quizzes. Further a bibliography about arcticles in different related domains is continously extended. Finally, questionnaires on different issues are provided. To be able to participate you need an account and a password from TU Wien's TISS system.

How to connect to a database? How to read or write data?

How to make a website with dynamic content? We need to store the content somewhere. And a good, searchable storage is a database. Almost every webservice needs a database. But how do connect to the database? And how do we read and write the data?

Validate an Email address

It's a common task to integrate email addresses to a web application. But how do we check them? How to make sure it's a valid Email Address? On which level?

Test login functionality after every code change.

Testing the very common functionality of "login"/"sing in" might be exhausting if we have to test it after every change in the project. Entering the credentials every time, or even if they are stored in the browser, one has to click through it. There must be some better way...

Adding Jsp jars with maven!

How can i add JSP jars on eclipse through maven?

Drupal 7 - Export of Case structure and instances

I have a problem with the export, actually with the feature function. I want to export our group case structure and instances, but the problem is under the content type there isn't the CBR case listed, is this an issue or exist another way to export the cases? Thanks in advance Cheers, Markus

Add modules on Drupal

I have a problem concerning adding new modules on Drupal. I am using Drupal 7 and the button "Add new module" is nowhere to be found. When I try to go to "/admin/modules/install", it tells me that I don't have permission to access this page. Did someone encounter the same problem?

Auto like and auto follow on Instagram.

I was looking for a way to auto like my friends pics without engaging my mind with people's matters. In git there is many variation of auto like and auto follow Javascript code, but the problem is some does not work and the one which work you have to put some code inside it. just go to Instagram open a pic and rightclick on next pic arrow and choose the inspect now click on highlighted code, its in a format like this : class" ******* " Now you have to copy the "*******" , part and put inside your code (which you got from git).

Installing Maven

For installing Maven on mac Os or any other operating system you have to first download maven from its website then put the unzip folder in any address you want on your machine then we have to set 2 system variables for it: the first one is PATH, and the another one is HOME. Then you can check from terminal if it is installed fault free. You can check it via this command on Terminal: mvn --version the the problem reveals when you restart the Terminal! the command does not work. It is like you never had installed Maven on your machine.

Connected to the WiFi but PC won't access any page

If it didn't happen today a couple of times, maybe I would hardly come up with the third problem related to the internet, so here it is: As today everybody is at home - typical Sunday, then I counted ca. 10 devices connected to the WiFi, which I thought was the most probable source of my problem when trying to identify one. Even though I was connected to the internet the whole time, I still couldn't access websites the most of the time. Nevertheless, Skype for Business was constantly working - which made the things even more confusing.

Access Exchange Mail Server

In the course of developing an application for a client, I had to access to a Mail inbox with a software via any of the several Servers: IMAP, Exchange, POP3. After hours/days of trying, not a single server was able to access the Mail inbox- the odd was that each time I pinged the server, It was reachable, the credentials were correct and the outlook web access was also working well.


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