Tag: java

How to Create JWT Token Using LDAP and Spring Boot Part 1

If you are working in an enterprise infrastructures, chances are that you are using a centralized authentication system, most likely Active Directory or openLDAP. In this blog I’ll explore how to create a REST API using spring boot to authenticate against openLDAP and create a JWT token in return. Before getting our hand dirty, we… Continue reading How to Create JWT Token Using LDAP and Spring Boot Part 1

How to Authenticate Against openLDAP Without Knowing DN Using java

In fact you can’t do it without knowing DN! There is an anonymous access in openLDAP which is enabled by default. The anonymous access let one to query(search filter) openLDAP without knowing bind username/password. Run following command on your openLDAP server : ldapwhoami -H ldap:// -x If you get “anonymous” as result you are all… Continue reading How to Authenticate Against openLDAP Without Knowing DN Using java

How to use CompletableFuture in SpringBoot 2

In Spring Boot there is an annotation @Async to assist developers for developing concurrent applications. But using this feature is quite tricky. In this blog we will see how to use this feature along with CompletableFuture. I assumed you know the drill about CompletableFuture, so I won’t repeat the concept here. First of all you… Continue reading How to use CompletableFuture in SpringBoot 2

How to install maven on Ubuntu manually with any specific version

For installing Maven on Ubuntu you have two ways  the easy way and the manual method. The easy way is just execute following command : sudo apt-get install maven Or if you use Ubuntu 16+ you can use following command too : sudo apt install maven Just remember you need to have root privileges. The… Continue reading How to install maven on Ubuntu manually with any specific version