I migrate from jboss3.0.6(jdk1.4) to jboss4.2.3(jdk1.5) GA.

where i call the  servlet from applet ,if the url include blank space ,i will get the error :505 ,and i run well in  jboss3.0.6(jdk1.4).i don't want to modify application because a lot of places must be modified.

Can i solve this problem by Jboss setting ,not programming?