Connecting Tomcat server to Eclipse

The trick here was that the location of the jar was inside the Eclipse/STS project directory. STS stores its server configurations inside the /Servers folder and I had decided to store the tomcat runtimes here as well for neatness. Placing the runtimes elsewhere and trying again solves this issue.

You might want to check/manually edit your path by going into server properities:

In Servers view,

1) double-click on Tomcat server.

2) Then click on Overview of Tomcat settings appears.

3) "Open launch configuration" then Classpath

4) Edit User Entries here