Spring MVC : unable to display drop down - spring

Question

I am not getting the drop down value in Profession. Actually I am getting exception
javax.servlet.ServletException: Type [java.lang.String] is not valid for option items
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:848)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:781)
org.apache.jsp.WEB_002dINF.views.Registration_jsp._jspService(org.apache.jsp.WEB_002dINF.views.Registration_jsp:85)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:263)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1208)
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:992)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:939)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827)
javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
root cause
javax.servlet.jsp.JspException: Type [java.lang.String] is not valid for option items
org.springframework.web.servlet.tags.form.OptionWriter.writeOptions(OptionWriter.java:142)
org.springframework.web.servlet.tags.form.SelectTag.writeTagContent(SelectTag.java:223)
org.springframework.web.servlet.tags.form.AbstractFormTag.doStartTagInternal(AbstractFormTag.java:103)
org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:80)
org.apache.jsp.WEB_002dINF.views.Registration_jsp._jspx_meth_form_select_0(org.apache.jsp.WEB_002dINF.views.Registration_jsp:283)
org.apache.jsp.WEB_002dINF.views.Registration_jsp._jspx_meth_form_form_0(org.apache.jsp.WEB_002dINF.views.Registration_jsp:144)
I understand something wrong with select tag .
please help
RegisterController
package net.codejava.spring.controller;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import net.codejava.spring.model.User;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
#Controller
#RequestMapping(value = "/register")
public class RegisterController {
#RequestMapping(method = RequestMethod.GET)
public ModelAndView initForm() {
User user = new User();
user.setUsername("Anukul");
ModelAndView mav = new ModelAndView("Registration");
//=== default user name======
//model.addAttribute("userNameDefault", "Enter Name");
mav.addObject("userNameDefault", "Enter Name");
//==== creating drop down list =====
Map<String,String> profDropDown = new HashMap<String, String>();
profDropDown.put("Lecturer", "Lecturer");
profDropDown.put("proff", "proff");
// //==== adding drop down to user ====
mav.addObject("ProffesionList", profDropDown);
mav.addObject("user",user);
//==== user added to model =========
return mav;
}
#RequestMapping(method = RequestMethod.POST)
public String submitForm(Model model,#ModelAttribute User user) {
model.addAttribute(user);
// implement your own registration logic here...
return "RegistrationSuccess";
}
}
Registration.jsp
<%# page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%# taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Registration</title>
</head>
<body>
<div align="center">
<h1>reached here</h1>
<form:form action="register" method="POST" commandName="user">
<table border="0">
<tr>
<td colspan="2" align="center"><h2>Spring MVC Form Demo - Registration</h2></td>
</tr>
<tr>
<td>User Name:</td>
<td><form:input path="username" /></td>
</tr>
<tr>
<td>Password:</td>
<td><form:password path="password" /></td>
</tr>
<tr>
<td>E-mail:</td>
<td><form:input path="email" /></td>
</tr>
<tr>
<td>Birthday (mm/dd/yyyy):</td>
<td><form:input path="birthDate" /></td>
</tr>
<tr>
<td>Profession:</td>
<td><form:select path="profession" items="${ProffesionList}" /></td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" value="Register" /></td>
</tr>
</table>
</form:form>
</div>
</body>
User.java
package net.codejava.spring.model;
import java.util.Date;
public class User {
private String username;
private String password;
private String email;
private Date birthDate;
private String profession;
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 String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public Date getBirthDate() {
return birthDate;
}
public void setBirthDate(Date birthDate) {
this.birthDate = birthDate;
}
public String getProfession() {
return profession;
}
public void setProfession(String profession) {
this.profession = profession;
}
}
----------------

Answer 1

does this works for you
<form:select id="profession" path="profession">
<form:options items="${ProffesionList}"/>
</form:select>
or try with this
<form:select id="profession" path="profession">
<c:forEach var="prof" items="${ProffesionList}">
<form:option value="${prof.key}" label="${prof.value}" />
</c:forEach>
</form:select>
Controller
#RequestMapping(method = RequestMethod.POST)
public String submitForm(Model model,#ModelAttribute User user) {
//==== creating drop down list =====
Map<String,String> profDropDown = new HashMap<String, String>();
profDropDown.put("Lecturer", "Lecturer");
profDropDown.put("proff", "proff");
// //==== adding drop down to user ====
mav.addObject("ProffesionList", profDropDown);
model.addAttribute(user);
// implement your own registration logic here...
return "RegistrationSuccess";
}
or add #ModelATtribute
#ModelAttribute("ProffesionList")
public Map<String,String> getProfessions(){
Map<String,String> profDropDown = new HashMap<String, String>();
profDropDown.put("Lecturer", "Lecturer");
profDropDown.put("proff", "proff");
return profDropDown;
}