Spring boot and Open UI5 error : JSON.parse: unexpected end of data – when setting resourceroots
Problem : After setting the tag data-sap-ui-resourceroots the UI5 loading stops with the error “JSON.parse: unexpected end of data …” Reason :...
Author: Kj
Kj [/.] Sreekumar programs computers as a hobby and profession. Into programming from his school days, Sree uses Codemarvels to key in facts and fixes he finds interesting while working on different projects. Some of the articles here give away a few shades of his philosophical leanings too.
Spring boot : Testing Cassandra Repositories using Cassandra Unit
This short tutorial is about getting test classes running for the Cassandra repositories in a Spring boot application. The example provided uses Maven, S...
Spring boot application : local URL doesn’t load in an IFrame
Problem : Application URLs (local urls) not loading in iframe inside an application UI. Reason : Spring sets the X-Frame-Options to Deny by default. Fix : Allow...
How to show custom favicon in Vaadin UI ?
Add this custom Vaadin servlet to show a different favicon (other than the Vaadin default) in your UI application – [java] import com.vaadin.server.*; imp...
A Javascript hack for Mohanlal-Rekha puzzle
Click on any node to find Mohanlal’s relation to that person (default selection is actress Rekha). Disclaimer : Based of the Whatsapp forward* only, which...
Openfire does not listen to port 5222
Problem : Openfire server does not listen to port 5222. Symptoms : netstat -tulpn | grep LISTEN – will not show ports 5222 or 5223. tail -1000 /opt/openfi...
Precedence and best practices for Apache ProxyPass
To set priority/order of ProxyPass (and ReverseProxyPass) rules, write the one with most precedence above the rest, and so forth. Delete any non-dot-con...
Open port 80 for Apache2 on Ubuntu using the Ubuntu firewall service
For cases where Apache2 is available within the box/local host, but not from LAN, you might have to open port 80 in the firewall. This is a simple comman...
Extract a selected polygon from an image to a new image file in Java
A reference code to extract a selected shape (this case polygon, could be another shape like Rectangle) – [java] BufferedImage in = ImageIO.read(new File(...
Torch installation fails with message “Error. OpenBLAS could not be compiled”
Problem : Torch installation fails to install dependencies (“bash install-deps”) with the message “Error. OpenBLAS could not be compiled”...