Issue
I have 2 tables, city and hotel_details in my database. I am trying to fetch the data from these tables and populating inside a form for registering the customer. But I am getting "java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'command' available as request attribute" as error.
JSP file
<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%> <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> <!DOCTYPE html> <head> <title>Search Hotels</title> </head> <body> <h4>Search Hotels</h4> <form:form action="search"> <table> <tr> <td>City:</td> <td> <form:select path="cities"> <form:options items="${cities}" /> </form:select> </td> </tr> <tr> <td>Hotel:</td> <td> <form:select path="hotels"> <form:options items="${hotels}" /> </form:select> </td> </tr> <tr> <td>Date:</td> <td> <input type="date" id="date" name="date"> </td> </tr> <tr> <td colspan="3"> <input type="submit" value="Check Availability"> </td> </tr> </table> </form:form>
- Controller
@Controller public class HomeController {
//need a controller method to show the initial HTML form
@Autowired(required=true)
private CityDAO cityDAO;
@Autowired(required=true)
private HotelDetailsDAO hotelDetailsDAO;
@RequestMapping("/")
public String showCheckAvailablityForm(Model theModel) {
// get customers from the dao
//List<City> theCities = cityDAO.getCities();
List<String> theCities = cityDAO.getCities();
Set<String> theHotels = hotelDetailsDAO.getHotels();
// add the customers to the model
theModel.addAttribute("cities", theCities);
theModel.addAttribute("hotels", theHotels);
//printing the data fetched
System.out.println("In HomeController showCheckAvailability method where city name is being fetched from city table");
theCities.forEach((n) -> System.out.println(n));
System.out.println("printing hotels");
for (String temp : theHotels) {
System.out.print(temp + " ");
}
return "checkAvailability-form";
}
@RequestMapping("/search")
public String searchResult(@RequestParam("cityName") String theCityName, @RequestParam("hotelName") String theHotelName,Model model) {
System.out.println("processed successfully");
return null;
}
}
Solution
When you use <form:form> attribute, it requires you to specify model object that should be bound to form tag. If you don't specify any model attribute default name is used as command.
Following is the description of form:form tag from spring-form.tld -
<attribute>
<description>Name of the model attribute under which the form object is exposed.
Defaults to 'command'.</description>
<name>modelAttribute</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<description>Name of the model attribute under which the form object is exposed.
Defaults to 'command'.</description>
<name>commandName</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
As you don't have any model object bound to form, try removing form:form tag and use HTML form tag and also make sure you match input parameter names with method parameter names. i.e -
<form action="search">
...
</form>
Answered By - Sachin Gorade
Answer Checked By - Gilberto Lyons (JavaFixing Admin)
