At times it is required to add Enum values on the jsp page so that its easy to handle on the server side. To display this feature i am using spring 3.0 version.
Lets create a Java Enum Class and override some of its behavior
public enum WorkingDay {</code>
Monday("Monday"),
Tuesday("Tuesday");
Wednesday("Wednesday");
Thursday("Thursday");
private String description;
private WorkingDay(String description) {
this.description = description;
}
public String getValue() {
return name();
}
public void setValue(String value) {}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
}
I just want 4 working days in a week 🙂 .
Now register a binder to the controller.
@InitBinder
protected void initBinder(HttpServletRequest request,
ServletRequestDataBinder binder) {</code>
binder.registerCustomEditor(WorkingDay.class, new PropertyEditorSupport() {
@Override
public void setAsText(String value) throws IllegalArgumentException {
if(StringUtils.isBlank(value))
return;
setValue(WorkingDay.valueOf(value));
}
@Override
public String getAsText() {
if(getValue() == null)
return "";
return ((WorkingDay) getValue()).name();
}
});
Set the WorkingDay object to the model object for the view. It should be in the same controller in which the above binder is registered.
@RequestMapping(value="/form", method = RequestMethod.GET)
public ModelAndView showForm() {
ModelAndView model = new ModelAndView("/view_my_jsp");
model.addObject("workingday", WorkingDay.values());
return model;
}
Add the code in “view_my_jsp.jsp”
<form:radiobuttons path="type" items="${workinday}" />
The value of path should match the field name of the property of the command object passed.
The jsp page will contain four radio buttons.