Spring form tag error - spring

Question

I think It is easy for a lot of peoples but I don't know what I'm doing wrong.
My controller:
#RequestMapping(value = "/novo", method = RequestMethod.GET)
public ModelAndView novoTimeSheet() {
Usuario usuario1 = new Usuario(1L,"Leandro1","ltsiciliano1#gmail.com");
Usuario usuario2 = new Usuario(2L,"Leandro2","ltsiciliano2#gmail.com");
Usuario usuario3 = new Usuario(3L,"Leandro3","ltsiciliano3#gmail.com");
List<Usuario> usuarioList = new ArrayList<Usuario>();
usuarioList.add(usuario1);
usuarioList.add(usuario2);
usuarioList.add(usuario3);
Map<String, Object> model = new HashMap<String, Object>();
model.put("usuarios", usuarioList);
return new ModelAndView("timesheetcrud/novo", "timesheetcruddto", model);
}
It's working:
<td>Usuário :</td>
<td>
<select id="usuarios" name="usuarios">
<c:forEach items="${timesheetcruddto.usuarios}" var="usuario">
<option value="${usuario.id}"><c:out value="${usuario.nome}"/></option>
</c:forEach>
</select>
</td>
But I'd like to use spring tag and I put this:
<td>Usuário :</td>
<td>
<td>
<form:select id="id_usuario" path="usuarios">
<form:option value="0" label="--- Select ---" />
<form:options items="${usuarioList}"/>
</form:select>
</td>
</td>
It isn't work:
<td>
<form:select id="id_usuario" path="usuarios">
<form:option value="0" label="--- Select ---" />
<form:options items="${usuarios}"/>
</form:select>
</td>
And It's wrong:
org.springframework.beans.NotReadablePropertyException: Invalid property 'usuarios' of bean class [java.util.HashMap]: Bean property 'usuarios' is not readable or has an invalid getter method: Does the return type of the getter match the parameter type of the setter?
I'd like to know what's benefit to use spring tags instead of JSTL.
Thanks

Answer 1

usuarios is a list .. for a form, you need to bind an object
object will have a list with getters and setters.
object.setUsuarioList(usariolist);
model.put("object", object);
and then
<form:options items="${object.usuarioList}"/>

Answer 2

You can do like this
<form:select path="usuarioList">
<form:options items="${usuarios}" />
</form:select>

Answer 3

You can improve your code like
`<form:select path="usuarioList">
<form:option value="NONE" label="--- Select ---"/>
<form:options items="${usuarios}" />
</form:select>
`
Also please change your variable name for more suitable one like
List<Usuario> usuarios= new ArrayList<Usuario>();
usuarios.add(usuario1);
usuarios.add(usuario2);
usuarios.add(usuario3);
Map<String, Object> model = new HashMap<String, Object>();
model.put("UserList", usuarios);
It looks much good than earlier