Question

I use spring 3. I’m trying to display a value of an object in a jsp.

public class UserForm implements Serializable {

    private List<String> values;
    private String date;
    ...
}

Here is my controller:

@Controller
@RequestMapping("/user.htm")
public class UserController {

    @Autowired
    private IUserService userService;

    @RequestMapping(method = RequestMethod.GET)
    public String userStat(Model model) {

        UserForm stat = userService.populateStatistique();
        stat.setDate("today");
        model.addAttribute("statistiqueForm", stat);
        return "userStat";
    }
}

Here is my jsp:

<form:form commandName="userForm" name="userForm">
    Date: <form:input path="date"></form:input>
    <br/>
    Expediteur: 
    <form:select path="values" items="${values}" />
    <br/>
    <input type="submit" value="create" />
</form:form>

In the jsp I can see the today value for the date field, but the listbox is empty.

any idea?

thanks

Answer 1

You’re correctly passing the form object to the jsp page. In that page you have a list box, which has a list of potential values and a list of selected values. The object form contains the list of selected values, but you should also setup the list with all potential values. In fact you reference ${values} in the jsp, but you don’t pass it to the jsp. You should add this code to your controller:

model.addAttribute("values", potentialValueList);

I also suggest you to change the name of that list to avoid confusion, so it will be easy to understand the difference from selected values to potential values.