JasperException: Exception in JSP

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Devendra Borkar

JasperException: Exception in JSP
0 Answer(s) 11 months ago
Posted in : JSP-Servlet

Hi,

I am facing below problem while getting paramater as int from jsp. Same code is working fine for string. Please suggest the way forward.

exception

org.apache.jasper.JasperException: Exception in JSP: /UserMonitor.jsp:23

20: <input type="submit" value="get Info">
21: </form>
22: <%
23: bean.setClassId(Integer.parseInt(request.getParameter("id")));
24: bean.setClassName(request.getParameter("name"));
25:  %>
26: <h4>using useBean and other directives:</h4>


Stacktrace:
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:491)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:413)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:308)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:259)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)


root cause 

java.lang.NumberFormatException: null
    java.lang.Integer.parseInt(Integer.java:417)
    java.lang.Integer.parseInt(Integer.java:499)
    org.apache.jsp.UserMonitor_jsp._jspService(UserMonitor_jsp.java:72)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:99)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:730)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:371)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:308)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:259)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:730)

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