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POFind the error in Struts2 dropdown list program?
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  1. POFind the error in Struts2 dropdown list program?
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    copied!<p>the three files are given for struts2.it is not giving the output.its giving jasper exception.please find the errors</p> <p>========================</p> <pre><code>updatedesig.jsp </code></pre> <p>=======================</p> <pre><code>&lt;%@page contentType="text/html" pageEncoding="UTF-8"%&gt; &lt;%@taglib prefix="p" uri="/struts-tags" %&gt; &lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;meta http-equiv="Content-Type" content="text/html; charset=UTF-8"&gt; &lt;title&gt;JSP Page&lt;/title&gt; &lt;/head&gt; &lt;body&gt; &lt;p:form action="count"method="post"&gt; &lt;p:select name="country" list="countryList" label="Select a country" /&gt;/*creating list in jsp*/ &lt;/p:form&gt; &lt;h1&gt;Hello World!&lt;/h1&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>========================</p> <pre><code>struts.xml </code></pre> <p>========================</p> <pre><code>&lt;struts&gt; &lt;package name="b" extends="struts-default"&gt; &lt;action name="count" class="b.Countr" &gt;/*action class is Countr.java*/ &lt;result name="success"&gt;updatedesig.jsp&lt;/result&gt; &lt;/action&gt; &lt;/package&gt; &lt;/struts&gt; </code></pre> <p>============================</p> <pre><code>Countr.java </code></pre> <p>============================</p> <pre><code> package b; import java.util.ArrayList; import com.opensymphony.xwork2.ActionSupport; public class Countr extends ActionSupport/*class Countr*/ { public ArrayList countrylist; String country; public ArrayList getCountrylist()/*getting countrylist*/ { return countrylist; } public void setCountrylist( ArrayList countrylist)/*setting countrylist*/ { this.countrylist=countrylist; } public String getCountry()/*getting country*/ { return country; } public void setCountry( String country)/*setting country*/ { this.country=country; } public String execute() { countrylist = new ArrayList();/*creating the arraylist*/ countrylist.add("1"); countrylist.add("!"); countrylist.add("1"); return SUCCESS; } } </code></pre> <p>/*some parts of Glassfish server log */</p> <pre><code>WARNING: StandardWrapperValve[jsp]: PWC1406: Servlet.service() for servlet jsp threw exception tag 'select', field 'list', name 'country': The requested list key 'countryList' could not be resolved as a collection/array/map/enumeration/iterator type. Example: people or people.{name} - [unknown location] at org.apache.struts2.components.Component.fieldError(Component.java:237) at org.apache.struts2.components.Component.findValue(Component.java:358) at org.apache.struts2.components.ListUIBean.evaluateExtraParams(ListUIBean.java:80) at org.apache.struts2.components.Select.evaluateExtraParams(Select.java:105) at org.apache.struts2.components.UIBean.evaluateParams(UIBean.java:856) at org.apache.struts2.components.UIBean.end(UIBean.java:510) at org.apache.struts2.views.jsp.ComponentTagSupport.doEndTag(ComponentTagSupport.java:42) at org.apache.jsp.updatedesig_jsp._jspx_meth_p_select_0(updatedesig_jsp.java:138) at org.apache.jsp.updatedesig_jsp._jspx_meth_p_form_0(updatedesig_jsp.java:107) at org.apache.jsp.updatedesig_jsp._jspService(updatedesig_jsp.java:68) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111) at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:403) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:492) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:378) at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:88) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595) at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98) at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162) at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174) at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828) at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725) at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019) at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59) at com.sun.grizzly.ContextTask.run(ContextTask.java:71) at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532) at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513) at java.lang.Thread.run(Thread.java:722) </code></pre>
 

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