vinnom/UsuarioController.java

## lista.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://www.springframework.org/tags" prefix="s"%>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<%@ taglib uri="http://www.springframework.org/security/tags" prefix="security"%>

<!-- <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> -->
<c:url value="/resources" var="resPath" />
<c:url value="/usuarios/editar" var="editar"/>

<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <c:url value="/resources/css" var="cssPath" />
    <link rel="stylesheet" href="${cssPath}/bootstrap.min.css" />
    <link rel="stylesheet" href="${cssPath}/bootstrap-theme.min.css" />
    <title>Livros de Java, Android, iPhone, Ruby, PHP e muito mais - Casa do Código</title>
  </head>
  <body>
    <nav class="navbar navbar-inverse">
      <div class="container">
        <div class="navbar-header">
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse"
            data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
            <span class="sr-only">Toggle navigation</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </button>
          <a class="navbar-brand" href="${s:mvcUrl('HC#index').build()}">Casa do Código</a>
        </div>
        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
          <ul class="nav navbar-nav">
            <li class="nav-item"><a href="${s:mvcUrl('PC#listar').build()}">Lista de Produtos</a></li>
            <li class="nav-item"><a href="${s:mvcUrl('PC#form').build()}">Cadastro de Produtos</a></li>
            <li class="nav-item"><a href="${s:mvcUrl('UC#listar').build()}">Lista de Usuários</a></li>
            <li class="nav-item"><a href="${s:mvcUrl('PSC#pedidos').build()}">Pedidos</a></li>
          </ul>
          <ul class="nav navbar-nav navbar-right">
            <li class="nav-item"><span><a href="<c:url value="/logout" />">Sair</a></span></li>
            <li class="nav-item">
              <a href="#"><security:authentication property="principal" var="usuario" /> ${usuario.username} </a>
            </li>
          </ul>
        </div>
        <!-- /.navbar-collapse -->
      </div>
    </nav>
    <div class="container">
      <h2><a href="${s:mvcUrl('UC#form').build()}">Novo Usuário</a></h2>
      <h1>Usuários cadastrados:</h1>
      <h3>${sucesso}</h3>
      <table class="table table-bordered table-striped table-hover">
        <tr>
          <th>Nome</th>
          <th>Email</th>
          <th>Roles</th>
        </tr>
        <c:forEach items="${usuarios}" var="usuario">
          <tr>
            <td>${usuario.nome}</td>
            <td>${usuario.email}</td>
            <td>${usuario.roles}</td>
            <td>
              <form:form servletRelativeAction="${s:mvcUrl('UC#editarForm').arg(0, usuario.email).build()}"
                method="POST" modelAttribute="email">
                <input type="image" name="usuario" src="${resPath}/imagens/editar.png" alt="Editar" title="Editar" >
              </form:form>
            </td>
          </tr>
        </c:forEach>
      </table>
    </div>
  </body>
</html>

## UsuarioController.java
package br.com.casadocodigo.loja.controllers;

import java.util.List;

import javax.validation.Valid;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import br.com.casadocodigo.loja.dao.RoleDAO;
import br.com.casadocodigo.loja.dao.UsuarioDAO;
import br.com.casadocodigo.loja.models.Role;
import br.com.casadocodigo.loja.models.Usuario;
import br.com.casadocodigo.loja.validation.UsuarioValidation;

@Controller
@RequestMapping("/usuarios")
public class UsuarioController {

  @Autowired
  private UsuarioDAO usuarioDao;

  @Autowired
  private RoleDAO roleDao;

  @Autowired
  private UsuarioValidation validaUsuario;

  @InitBinder
  public void initBinder(WebDataBinder binder) {
    binder.addValidators(validaUsuario);
  }

  @RequestMapping("/form")
  public ModelAndView form(Usuario usuario) {
    ModelAndView modelAndView = new ModelAndView("usuarios/form");
    return modelAndView;
  }

  @RequestMapping(method = RequestMethod.POST)
  public ModelAndView gravar(@Valid Usuario usuario, BindingResult result, RedirectAttributes redirectAttributes) {

    if (result.hasErrors()) {
      return form(usuario);
    }

    usuarioDao.gravar(usuario);

    String sucesso = "Usuário " + usuario.getNome() + " cadastrado com sucesso!";

    redirectAttributes.addFlashAttribute("sucesso", sucesso);

    return new ModelAndView("redirect:/usuarios");
  }

  @RequestMapping(method = RequestMethod.GET)
  public ModelAndView listar() {
    List<Usuario> usuarios = usuarioDao.listar();
    ModelAndView modelAndView = new ModelAndView("usuarios/lista");
    modelAndView.addObject("usuarios", usuarios);
    return modelAndView;
  }

  @RequestMapping("/roles/{email}")
  public ModelAndView editarForm(@PathVariable("email") String email) {
    ModelAndView mav = new ModelAndView("/usuarios/editar");

    Usuario usuario = usuarioDao.loadUserByUsername(email);
    mav.addObject("usuario", usuario);

    List<Role> listaRoles = roleDao.listar();
    mav.addObject("listaRoles", listaRoles);

    return mav;
  }
}
	<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
	<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
	<%@ taglib uri="http://www.springframework.org/tags" prefix="s"%>
	<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
	<%@ taglib uri="http://www.springframework.org/security/tags" prefix="security"%>

	<!-- <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> -->
	<c:url value="/resources" var="resPath" />
	<c:url value="/usuarios/editar" var="editar"/>

	<!DOCTYPE html>
	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
	<c:url value="/resources/css" var="cssPath" />
	<link rel="stylesheet" href="${cssPath}/bootstrap.min.css" />
	<link rel="stylesheet" href="${cssPath}/bootstrap-theme.min.css" />
	<title>Livros de Java, Android, iPhone, Ruby, PHP e muito mais - Casa do Código</title>
	</head>
	<body>
	<nav class="navbar navbar-inverse">
	<div class="container">
	<div class="navbar-header">
	<button type="button" class="navbar-toggle collapsed" data-toggle="collapse"
	data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
	<span class="sr-only">Toggle navigation</span>
	<span class="icon-bar"></span>
	<span class="icon-bar"></span>
	<span class="icon-bar"></span>
	</button>
	<a class="navbar-brand" href="${s:mvcUrl('HC#index').build()}">Casa do Código</a>
	</div>
	<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
	<ul class="nav navbar-nav">
	<li class="nav-item"><a href="${s:mvcUrl('PC#listar').build()}">Lista de Produtos</a></li>
	<li class="nav-item"><a href="${s:mvcUrl('PC#form').build()}">Cadastro de Produtos</a></li>
	<li class="nav-item"><a href="${s:mvcUrl('UC#listar').build()}">Lista de Usuários</a></li>
	<li class="nav-item"><a href="${s:mvcUrl('PSC#pedidos').build()}">Pedidos</a></li>
	</ul>
	<ul class="nav navbar-nav navbar-right">
	<li class="nav-item"><span><a href="<c:url value="/logout" />">Sair</a></span></li>
	<li class="nav-item">
	<a href="#"><security:authentication property="principal" var="usuario" /> ${usuario.username} </a>
	</li>
	</ul>
	</div>
	<!-- /.navbar-collapse -->
	</div>
	</nav>
	<div class="container">
	<h2><a href="${s:mvcUrl('UC#form').build()}">Novo Usuário</a></h2>
	<h1>Usuários cadastrados:</h1>
	<h3>${sucesso}</h3>
	<table class="table table-bordered table-striped table-hover">
	<tr>
	<th>Nome</th>
	<th>Email</th>
	<th>Roles</th>
	</tr>
	<c:forEach items="${usuarios}" var="usuario">
	<tr>
	<td>${usuario.nome}</td>
	<td>${usuario.email}</td>
	<td>${usuario.roles}</td>
	<td>
	<form:form servletRelativeAction="${s:mvcUrl('UC#editarForm').arg(0, usuario.email).build()}"
	method="POST" modelAttribute="email">
	<input type="image" name="usuario" src="${resPath}/imagens/editar.png" alt="Editar" title="Editar" >
	</form:form>
	</td>
	</tr>
	</c:forEach>
	</table>
	</div>
	</body>
	</html>
	package br.com.casadocodigo.loja.controllers;

	import java.util.List;

	import javax.validation.Valid;

	import org.springframework.beans.factory.annotation.Autowired;
	import org.springframework.stereotype.Controller;
	import org.springframework.validation.BindingResult;
	import org.springframework.web.bind.WebDataBinder;
	import org.springframework.web.bind.annotation.*;
	import org.springframework.web.servlet.ModelAndView;
	import org.springframework.web.servlet.mvc.support.RedirectAttributes;

	import br.com.casadocodigo.loja.dao.RoleDAO;
	import br.com.casadocodigo.loja.dao.UsuarioDAO;
	import br.com.casadocodigo.loja.models.Role;
	import br.com.casadocodigo.loja.models.Usuario;
	import br.com.casadocodigo.loja.validation.UsuarioValidation;

	@Controller
	@RequestMapping("/usuarios")
	public class UsuarioController {

	@Autowired
	private UsuarioDAO usuarioDao;

	@Autowired
	private RoleDAO roleDao;

	@Autowired
	private UsuarioValidation validaUsuario;

	@InitBinder
	public void initBinder(WebDataBinder binder) {
	binder.addValidators(validaUsuario);
	}

	@RequestMapping("/form")
	public ModelAndView form(Usuario usuario) {
	ModelAndView modelAndView = new ModelAndView("usuarios/form");
	return modelAndView;
	}

	@RequestMapping(method = RequestMethod.POST)
	public ModelAndView gravar(@Valid Usuario usuario, BindingResult result, RedirectAttributes redirectAttributes) {

	if (result.hasErrors()) {
	return form(usuario);
	}

	usuarioDao.gravar(usuario);

	String sucesso = "Usuário " + usuario.getNome() + " cadastrado com sucesso!";

	redirectAttributes.addFlashAttribute("sucesso", sucesso);

	return new ModelAndView("redirect:/usuarios");
	}

	@RequestMapping(method = RequestMethod.GET)
	public ModelAndView listar() {
	List<Usuario> usuarios = usuarioDao.listar();
	ModelAndView modelAndView = new ModelAndView("usuarios/lista");
	modelAndView.addObject("usuarios", usuarios);
	return modelAndView;
	}

	@RequestMapping("/roles/{email}")
	public ModelAndView editarForm(@PathVariable("email") String email) {
	ModelAndView mav = new ModelAndView("/usuarios/editar");

	Usuario usuario = usuarioDao.loadUserByUsername(email);
	mav.addObject("usuario", usuario);

	List<Role> listaRoles = roleDao.listar();
	mav.addObject("listaRoles", listaRoles);

	return mav;
	}
	}