Subject: Preservation of forms From: "Scott Danzig" <[EMAIL PROTECTED]> === I'm wondering if forms are preserved in the session attributes. Here's the layout I have:
LogonAction bean: Create a SecondForm bean Set various properties in the bean, prepopulating it Set it as the value of the session attribute: "secondForm" Specifies to load second.jsp second.jsp Shows all the prepopulated values just fine. Has an html:image button which leads to second.jsp Now should I be able to keep pressing this button, reloading the same form, with the values in the form being preserved? One of the properties I try setting in the form is two array lists used for an html:select statement. When I click the button, it complains about one of the array lists being null, as shown in the error below. In the SecondAction bean, if I take the form it gives me and set these array list properties to new array lists before returning to reload second.jsp, it stops complaining. Why should I have to reload it? I made sure reset() wasn't touching it. Here's that error... There's more to this I'll write afterwards: Error: 500 Location: /MYPROJECT/second.jsp Internal Servlet Error: javax.servlet.ServletException: Property listValues returned a null value at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImp l.java:459) at _0002flocation_0002ejsplocation_jsp_17._jspService(_0002flocation_0002ejsplo cation_jsp_17.java:1122) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServlet.ja va:130) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.ja va:282) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405) at org.apache.tomcat.core.Handler.service(Handler.java:287) at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372) at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:81 2) at org.apache.tomcat.core.ContextManager.service(ContextManager.java:758) at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC onnectionHandler.java:213) at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416) at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501) at java.lang.Thread.run(Thread.java:484) Root cause: javax.servlet.jsp.JspException: Property listValues returned a null value at org.apache.struts.taglib.html.OptionsTag.getIterator(OptionsTag.java:392) at org.apache.struts.taglib.html.OptionsTag.doEndTag(OptionsTag.java:284) at _0002flocation_0002ejsplocation_jsp_17._jspService(_0002flocation_0002ejsplo cation_jsp_17.java:419) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServlet.ja va:130) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.ja va:282) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405) at org.apache.tomcat.core.Handler.service(Handler.java:287) at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372) at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:81 2) at org.apache.tomcat.core.ContextManager.service(ContextManager.java:758) at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC onnectionHandler.java:213) at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416) at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501) at java.lang.Thread.run(Thread.java:484) Furthermore, if I have a third.jsp and have second.jsp go to that, and third.jsp go back to second.jsp, even refilling the form with the arraylists in SecondAction and ThirdAction doesn't work. It keeps saying they're null. What am I missing that would allow the desired functionality? Thanks in advance, and let me know if you need me to post more info. - Scott -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
