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JSP Throwing Exception in the jsp:useBean Tag

Joe Ridener
Ranch Hand

Joined: Jul 16, 2012
Posts: 86
Ok I am trying to auto populate a bean and retrieve the values from it using the jsp:useBean tags ect..

My code looks like this..



The error my Apache Tomcat is throwing

org.apache.jasper.JasperException: An exception occurred processing JSP page /sign_on_server_pages/confirm_info.jsp at line 91

88:
89:
90: %>
91: <jsp:useBean id="acct" type="beans.Creating_Account" scope="application"></jsp:useBean>
92: <!-- -->
93: <h5 class="param_names"> <%=param_names[0] %></h5><h5 style=" color: ${ color_border_links[0] } ;" class=""> ${ request.getParameter("firstName") }</h5>
94:


Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:568)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:455)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)

root cause

javax.servlet.ServletException: java.lang.InstantiationException: bean acct not found within scope
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:912)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:841)
org.apache.jsp.sign_005fon_005fserver_005fpages.confirm_005finfo_jsp._jspService(confirm_005finfo_jsp.java:217)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)


Any ideas on what I may be doing wrong... I have tried sever different values for the scope attribute and all of them say the same thing about 'not found in scope'
Bear Bibeault
Author and ninkuma
Marshal

Joined: Jan 10, 2002
Posts: 60794
    
  65

Well, have you created a scoped attributed named acct in the desired scope? If not, then that's exactly what the the exception is telling you.

The form of useBean you are using requires that the scoped variable already exist.

(And, of course, the usually question: why are you using 12-year-old obsolete technology? scriptlets are long dead.)


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