Hi, You are iterating over user. Best regards, Paweł Wielgus.
2009/1/14 ECLIPSE + CVS <anishpis...@gmail.com>: > > Hi, > > In one page of my application i am trying to iterate through one collection > for populating one combo box. But it is showing > "javax.servlet.jsp.JspException: Cannot create iterator for this collection" > .... > > I have one LoginForm that extends Validator form and it containg one object > of User. This user object contains a List of user roles .Actually i am > trying to display these user roles in my combo box in the jsp page. My code > is below. > > I am using struts 1.3 for develping this project ... > > Please help me > > > > My form class is below... > > > public class Loginform extends ValidatorForm{ > > public String userName; > public String passWord; > public User user = new User(); > > > public String getUserName() { > return userName; > } > > public void setUserName(String userName) { > this.userName = userName; > } > > public String getPassWord() { > return passWord; > } > > public void setPassWord(String passWord) { > this.passWord = passWord; > } > > public User getUser() { > return user; > } > > public void setUser(User user) { > this.user = user; > } > > /** > * Reset all properties to their default values. > * > * @param mapping The mapping used to select this instance > * @param request The servlet request we are processing > */ > public void reset(ActionMapping mapping, HttpServletRequest request) { > super.reset(mapping, request); > userName = ""; > passWord= ""; > } > } > > > > > User object is > > public class User implements Serializable{ > > public String userid = "Ashli"; > public String userName = "Ashli Isaac"; > public String passWord = "123456"; > public String userNumber = "1001"; > public List<String> userRoles = new ArrayList<String>(); > public String loginStatus; > public String riskCounter; > > > public User(){ > userRoles.add("Admin User"); > userRoles.add("Trial User"); > userRoles.add("BackUP User"); > userRoles.add("Super User"); > > } > > public List<String> getUserRoles() { > return userRoles; > } > public void setUserRoles(List<String> userRoles) { > this.userRoles = userRoles; > } > > > > > the code snippet for iteration in jsp is > > <tr> > > <td width="30%"> > <logic:iterate id="results" name="loginForm" > property="user"> > <bean:define id="result" > name="results" property="userRoles"> > <bean:write name="result"/> > </bean:define> > </logic:iterate> > </td> > > > My exception stack trace is > > SEVERE: Servlet.service() for servlet jsp threw exception > javax.servlet.jsp.JspException: Cannot create iterator for this collection > at > org.apache.struts.taglib.logic.IterateTag.doStartTag(IterateTag.java:275) > at org.apache.jsp.jsp.welcome_jsp._jspService(welcome_jsp.java:193) > at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > at > org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374) > at > org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) > at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) > at > org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630) > at > org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436) > at > org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374) > at > org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302) > at > org.apache.struts.chain.commands.servlet.PerformForward.handleAsForward(PerformForward.java:113) > at > org.apache.struts.chain.commands.servlet.PerformForward.perform(PerformForward.java:96) > at > org.apache.struts.chain.commands.AbstractPerformForward.execute(AbstractPerformForward.java:54) > at > org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51) > at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190) > at > org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304) > at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190) > at > org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283) > at > org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913) > at > org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) > at > org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) > at > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) > at > org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) > at java.lang.Thread.run(Unknown Source) > Jan 14, 2009 9:07:41 PM > org.apache.struts.chain.commands.AbstractExceptionHandler execute > WARNING: Unhandled exception > org.apache.jasper.JasperException: An exception occurred processing JSP page > /jsp/welcome.jsp at line 99 > > 96: Login > Status > 97: </td> > 98: <td > width="30%"> > 99: > <logic:iterate id="results" name="loginForm" property="user"> > 100: > <bean:define id="result" name="results" property="userRoles"> > 101: > <bean:write name="result"/> > 102: > </bean:define> > > > Stacktrace: > at > org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:505) > at > org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:398) > at > org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) > at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) > at > org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630) > at > org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436) > at > org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374) > at > org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302) > at > org.apache.struts.chain.commands.servlet.PerformForward.handleAsForward(PerformForward.java:113) > at > org.apache.struts.chain.commands.servlet.PerformForward.perform(PerformForward.java:96) > at > org.apache.struts.chain.commands.AbstractPerformForward.execute(AbstractPerformForward.java:54) > at > org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51) > at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190) > at > org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304) > at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190) > at > org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283) > at > org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913) > at > org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) > at > org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) > at > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) > at > org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) > at java.lang.Thread.run(Unknown Source) > Caused by: javax.servlet.ServletException: javax.servlet.jsp.JspException: > Cannot create iterator for this collection > at > org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:852) > at > org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:781) > at org.apache.jsp.jsp.welcome_jsp._jspService(welcome_jsp.java:368) > at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > at > org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374) > ... 33 more > Caused by: javax.servlet.jsp.JspException: Cannot create iterator for this > collection > at > org.apache.struts.taglib.logic.IterateTag.doStartTag(IterateTag.java:275) > at org.apache.jsp.jsp.welcome_jsp._jspService(welcome_jsp.java:193) > ... 36 more > Jan 14, 2009 9:07:41 PM org.apache.struts.chain.commands.ExceptionCatcher > postprocess > WARNING: Exception from exceptionCommand 'servlet-exception' > org.apache.jasper.JasperException: An exception occurred processing JSP page > /jsp/welcome.jsp at line 99 > > 96: Login > Status > 97: </td> > 98: <td > width="30%"> > 99: > <logic:iterate id="results" name="loginForm" property="user"> > 100: > <bean:define id="result" name="results" property="userRoles"> > 101: > <bean:write name="result"/> > 102: > </bean:define> > > > Stacktrace: > at > org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:505) > at > org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:398) > at > org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) > at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) > at > org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630) > at > org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436) > at > org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374) > at > org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302) > at > org.apache.struts.chain.commands.servlet.PerformForward.handleAsForward(PerformForward.java:113) > at > org.apache.struts.chain.commands.servlet.PerformForward.perform(PerformForward.java:96) > at > org.apache.struts.chain.commands.AbstractPerformForward.execute(AbstractPerformForward.java:54) > at > org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51) > at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190) > at > org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304) > at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190) > at > org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283) > at > org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913) > at > org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) > at > org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) > at > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) > at > org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) > at java.lang.Thread.run(Unknown Source) > Caused by: javax.servlet.ServletException: javax.servlet.jsp.JspException: > Cannot create iterator for this collection > at > org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:852) > at > org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:781) > at org.apache.jsp.jsp.welcome_jsp._jspService(welcome_jsp.java:368) > at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > at > org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374) > ... 33 more > Caused by: javax.servlet.jsp.JspException: Cannot create iterator for this > collection > at > org.apache.struts.taglib.logic.IterateTag.doStartTag(IterateTag.java:275) > at org.apache.jsp.jsp.welcome_jsp._jspService(welcome_jsp.java:193) > ... 36 more > Jan 14, 2009 9:07:41 PM org.apache.catalina.core.StandardWrapperValve invoke > SEVERE: Servlet.service() for servlet action threw exception > javax.servlet.jsp.JspException: Cannot create iterator for this collection > at > org.apache.struts.taglib.logic.IterateTag.doStartTag(IterateTag.java:275) > at org.apache.jsp.jsp.welcome_jsp._jspService(welcome_jsp.java:193) > at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > at > org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374) > at > org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) > at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) > at > org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630) > at > org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436) > at > org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374) > at > org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302) > at > org.apache.struts.chain.commands.servlet.PerformForward.handleAsForward(PerformForward.java:113) > at > org.apache.struts.chain.commands.servlet.PerformForward.perform(PerformForward.java:96) > at > org.apache.struts.chain.commands.AbstractPerformForward.execute(AbstractPerformForward.java:54) > at > org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51) > at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190) > at > org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304) > at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190) > at > org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283) > at > org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913) > at > org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) > at > org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) > at > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) > at > org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) > at java.lang.Thread.run(Unknown Source) > > > > > > Thanks and Regards, > > Crazy Worker > > > > -- > View this message in context: > http://www.nabble.com/Logic-Iterate-problem-tp21462092p21462092.html > Sent from the Struts - User mailing list archive at Nabble.com. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: user-unsubscr...@struts.apache.org > For additional commands, e-mail: user-h...@struts.apache.org > >