servlet can not run

hi, all,

After a few days’ struggling, the problems in my previous posts have been solved, now my JSP can run well, :slight_smile:

But servlet still can not run, the error message is:


javax.servlet.ServletException: Invoker service() exception
at org.apache.catalina.servlets.InvokerServlet.serveRequest(

root cause

at vaes.BuildSearchTry.doPost(
at javax.servlet.http.HttpServlet.service(
at javax.servlet.http.HttpServlet.service(

Anybody meet this problem before? Any suggestion will be greatly appreciated!