Hello !
I would not recommend to do such a thing directly with Spectrum. Spectrum is a network fault management tool and here you're trying to monitor services... UIM would be far more adapted to that if you have the choice (and then, UIM can be integrated with Spectrum so you get the alarms at the same place).
That being said, you can either use a SystemEDGE agent (or any kind of agent, or even a scheduled task) to run a script of your own on a regular basis, connecting on that page to retrieve the information you need. If the script finds out everything is OK, you do nothing, and if there are problems you generate a trap and send it to Spectrum. If the trap is configured in your AlertMaps/EventDisp, that's done!
Last but not least, you can have a look at the Southbound Gateway to do such an integration... Have fun!