The sSearch value is corrupt (text) ,How to do

maye100

hi,
my program is GBK,and use search have a Problem...
[code]
String searchTerm = request.getParameter("sSearch");
searchTerm = &/;*&^&^^%; //corrupt (text)
[/code]
my jsp head
[code]
//fail
[/code]

How to do? thanks