通過製作一個登陸小案例搭建 MVC + 三層
【VIEWS】--【Shared】下創建一個母版頁： _LoginPartial.cshtml
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<script src="~/Scripts/jquery-1.10.2.min.js"></script>
<script src="~/Scripts/jquery.validate.min.js"></script>
<script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>
<link href="~/Content/LogIn.css" rel="stylesheet" />
<style type="text/css">
* {
margin: 0;
padding: 0;
}
.nav {
border: 2px solid border-right:none;
overflow: hidden;
float: center;
}
.nav ul li {
float: left;
width: 130px;
height: 20px;
}
.nav ul li a {
width: 150px;
height: 30px;
text-align: center;
line-height: 28px;
display: block;
border-right: 2px solid #FFFFFF;
color: #FFF;
width: 150px;
font-weight: bold;
}
.nav ul li a:hover {
font-weight: bold;
color: #FFFFFF;
}
.nav ul li ul {
position: absolute;
display: none;
}
.nav ul li ul li {
float: none;
}
.nav ul li ul li a {
width: 150px;
height: 40px;
border-right: none;
border-top: 1px dotted #FFFFFF;
background: #cc6698;
}
.nav ul li:hover ul {
display: block;
}
.barStyle {
color: #FFFFFF;
font-weight: bold;
}
.style1 {
text-align: center;
font-family: "Meiryo UI";
font-size: x-large;
}
</style>
<title>@ViewBag.Title</title>
</head>
<body>
<div id="header" style="background: #a6154c; width: 100%; height: 80px">
<p style="color: #ffffff; padding: 23px" class="style1">
<strong>User Management System</strong>
</p>
</div>
@if (Request.IsAuthenticated) <span style="color:#ff6600;"> //如果登陸成功</span>
{
<center>
<div class="nav" style="background: #a6154c; width: 100%; height: 30px">
<ul>
<li>@Html.ActionLink("Home", "Index", "Home")</li> //主頁
<li>@Html.ActionLink("Log Out", "LogOut", "Account")</li> //導航欄添加一個 log Out 選項
</ul>
</div>
<div><span>Current ID: @Context.User.Identity.Name</span> </div> <span style="color:#ff6600;">//獲取當前登錄用戶</span>
</center>
}
else <span style="color:#ff6600;">// 未登錄狀態</span>
{
<center>
<div class="nav" style="background: #a6154c; width: 100%; height: 30px">
<ul>
<li>@Html.ActionLink("Home", "Index", "Home")</li> //主頁
<li>@Html.ActionLink("Log In", "login", "Account")</li> //登陸選項
</ul>
</div>
<b>Pls login first!</b> //提示需要先登錄
</center>
}
<div>
@RenderBody()
</div>
</body>
</html>注意：需要使用Request.IsAuthenticated 身份驗證，需要在Web.Config 下添加如下代碼
<authentication mode="Forms">
<forms loginUrl="~/Account/Login" protection="All" timeout="60" path="/" />
</authentication>
控制器： AccountController.cs
public class AccountController : Controller
{
// GET: Account
public ActionResult Index()
{
return View();
}
public ActionResult Login()
{
return View();
}
[HttpPost]
public ActionResult Login(AccountEntity account)
{
if (new Bll.AccountManageBll().LoginCheck(account))
{
FormsAuthentication.SetAuthCookie(account.LogID, true);
return RedirectToAction("Index", "Home");
}
else
{
ViewBag.msg = "LogID or Password error.";
return View();
}
}
public ActionResult LogOut()
{
FormsAuthentication.SignOut();
return RedirectToAction("Index","Home");
}
}視圖：【Views】--【Account】 Login.cshtml
@using Model
@model AccountEntity
@{
ViewBag.Title = "Login";
Layout = "~/Views/Shared/_LoginPartial.cshtml";
}
<br />
<br />
<br />
@using (Html.BeginForm("Login", "Account", FormMethod.Post))
{
<div class="full">
<div class="box">
<div class="title">
<span class="titlespan"><b>Log In</b></span>
</div>
<br />
<div class="ID">
<div><span>Login ID </span> @Html.TextBoxFor(u => u.LogID)</div>
<div>@Html.ValidationMessageFor(u => u.LogID, "", new { style = "color:#F00;font-size:10px" })</div>
</div>
<div class="password">
<div><span>Password </span>@Html.PasswordFor(u => u.Password)</div>
<div>@Html.ValidationMessageFor(u => u.Password, "", new { style = "color:#F00;font-size:10px" })</div> <span style="color:#ff6600;"> //校驗不能爲空</span>
</div>
<div class="btnLogin">
<input type="Submit" name="Submit" value="Log In">
</div>
</div>
</div>
<div class="full">
<br />
<span style="color:#F00;font-size:12px;font-weight:bold">@ViewBag.msg</span><br />
</div>
}實體：【Model】層新建一個 AccountEntity 實體模型
public class AccountEntity
{
[Required(ErrorMessage ="LogID cann't be empty!")] //Required 驗證
public string LogID { get; set; }
[Required(ErrorMessage = "Password cann't be empty!")] //Required 驗證
public string Password { get; set; }
public AccountEntity() { } //無參構造函數
public AccountEntity(string ID,string Pwd) //有參構造函數 爲了測試數據
{
LogID = ID;
Password = Pwd;
}
}【DAL】數據訪問層 AccountServiceDal.cs
【使用數據庫才需要使用 本實例測試數據在BLL層】
/// <summary>
/// 獲取用戶信息
/// </summary>
/// <returns></returns>
public List<AccountEntity> GetAccountInfo()
{
string sqlStr = @"ProcSelAccount"; //存儲過程名
List<AccountEntity> accountList = new List<AccountEntity>();
using (SqlDataReader reader = SqlHelper.ExecReader(sqlStr)) //SqlHelper： SQL幫助類
{
while (reader.Read())
{
AccountEntity account = BuildSubject(reader);
accountList.Add(account);
}
}
return accountList;
}
public AccountEntity BuildSubject(SqlDataReader reader)
{
AccountEntity account = new AccountEntity();
account.LogID = reader.GetString(0);
account.Password = reader.GetString(1);
【BLL】業務邏輯層 AccountManageBll.cs
public bool LoginCheck(AccountEntity account)
{
bool flag = false;
// List<AccountEntity> accountList = new AccountServiceDal().GetAccountInfo(); //校驗數據庫中用戶數據，需使用此代碼
<span style="color:#ff0000;">//Test Account Data</span>
List<AccountEntity> accountList = new List<AccountEntity>() //增加兩條用戶數據
{
new AccountEntity("Jarvis","ABC123"),
new AccountEntity("Admin","admin123")
};
foreach (AccountEntity accountInfo in accountList)
{
if(accountInfo.LogID == account.LogID && accountInfo.Password == account.Password)
{
flag = true;
}
}
return flag;
}最終測試實現：
1.未登錄狀態
2. 驗證
3.正確登陸
4.登陸成功
作爲初學者，純分享一些小案例，有不足之處還望高人指點迷津。