Problems when crawl a .nsf site

[丛云牙之主]

Hello, I am using nutch-1.2 has encountered a problem.The site is writtenwith 
lotus domino, I use the browser to enter, click on the emergence of 
thoseconnections have not changed the site URL, unlike some sites have a lot of 
suffixes.Then there is a web site is buptoa.bupt.edu.cn / student_broad.nsf, I 
wanted to climbwill take. Nsf file. But nutch does not support. Nsf file crawl, 
I should write my ownplugin or should solve this problem from the other side?
Extremely grateful for your help