用户

要实现这些目的首先新建用户(Model)模型

/// <summary>
    /// 用户模型
    /// </summary>
    public class User
    {
        [Key]
        public int UserId { get; set; }
        /// <summary>
        /// 用户组Id
        /// </summary>
        [Display(Name="用户组Id")]
        [Required(ErrorMessage = "×")]
        public int GroupId { get; set; }
        /// <summary>
        /// 用户名
        /// </summary>
        [Display(Name="用户名",Description="4-20个字符。")]
        [Required(ErrorMessage = "×")]
        [StringLength(20, MinimumLength = 4, ErrorMessage = "×")]
        public string UserName { get; set; }
        /// <summary>
        /// 密码
        /// </summary>
        [Required]
        [StringLength(256)]
        public string Password { get; set; }
        /// <summary>
        /// 性别【0-男;1-女;2-保密】
        /// </summary>
        [Display(Name="性别")]
        [Required(ErrorMessage = "×")]
        [Range(0,2,ErrorMessage = "×")]
        public byte Gender { get; set; }
        /// <summary>
        /// Email
        /// </summary>
        [Display(Name="Email",Description="请输入您常用的Email。")]
        [Required(ErrorMessage = "×")]
        [EmailAddress(ErrorMessage = "×")]
        public string Email { get; set; }
        /// <summary>
        /// 密保问题
        /// </summary>
        [Display(Name="密保问题",Description="请正确填写,在您忘记密码时用户找回密码。4-20个字符。")]
        [Required(ErrorMessage = "×")]
        [StringLength(20, MinimumLength = 4, ErrorMessage = "×")]
        public string SecurityQuestion { get; set; }
        /// <summary>
        /// 密保答案
        /// </summary>
        [Display(Name="密保答案",Description="请认真填写,忘记密码后回答正确才能找回密码。2-20个字符。")]
        [Required(ErrorMessage = "×")]
        [StringLength(20, MinimumLength = 2, ErrorMessage = "×")]
        public string SecurityAnswer { get; set; }
        /// <summary>
        /// QQ号码
        /// </summary>
        [Display(Name="QQ号码")]
        [RegularExpression("^[1-9][0-9]{4-13]$",ErrorMessage = "×")]
        [StringLength(12, MinimumLength = 6, ErrorMessage = "×")]
        public string QQ { get; set; }
        /// <summary>
        /// 电话号码
        /// </summary>
        [Display(Name="电话号码",Description="常用的联系电话(手机或固话),固话格式为:区号-号码。")]
        [RegularExpression("^[0-9-]{11-13}$",ErrorMessage = "×")]
        public string Tel { get; set; }
        /// <summary>
        /// 联系地址
        /// </summary>
        [Display(Name="联系地址",Description="常用地址,最多80个字符。")]
        [StringLength(80, ErrorMessage = "×")]
        public string Address { get; set; }
        /// <summary>
        /// 邮编
        /// </summary>
        [Display(Name="邮编")]
        [RegularExpression("^[0-9]{6}$",ErrorMessage = "×")]
        public string PostCode { get; set; }
        /// <summary>
        /// 注册时间
        /// </summary>
        public DateTime? RegTime { get; set; }
        /// <summary>
        /// 上次登录时间
        /// </summary>
        public DateTime? LastLoginTime { get; set; }

        /// <summary>
        /// 用户组
        /// </summary>
        public virtual UserGroup Group { get; set; }
    }

下面添加用户Controller。在Controller文件夹点右键 选择新建控制器名称输入UserController,完成后生成代码如下:

using System.Web.Mvc;
using CMS.Models;

namespace CMS.Controllers
{
    public class UserController : Controller
    {

        public ActionResult Register()
        {
            return View();
        }

        //
        // POST: /User/Create

        [HttpPost]
        public ActionResult Register(UserRegister uerReg)
        {
            try
            {
                // TODO: Add insert logic here

                return RedirectToAction("Index");
            }
            catch
            {
                return View();
            }
        }
    }
}

马上涉及的问题就是数据的存取,本来准备用Repository模式做,后来觉得用Repository模式在一个人写个简单那网站的情况下意义不大,写起来反而有点啰嗦,干脆用伪Repository模式写。项目中新建Repository文件夹。在文件夹中新建类CMS,用来实现EF的Context。代码如下:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data.Entity;
using CMS.Models;

namespace CMS.Repository
{
    public class CMSContext:DbContext
    {
        public DbSet<User> Users { get; set; }
    }
}

简单吧。再建一个类RepositoryBase,用来做***Repository的基类,里面写Add,Update,Delete,Find几个虚函数,方便在继承类里面这几个函数的名称统一。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace CMS.Repository
{
    public class RepositoryBase<TModel>
    {
        private CMSContext dbContext;
        public RepositoryBase()
        {
            dbContext = new CMSContext();
        }
        /// <summary>
        /// 添加【继承类重写后才能正常使用】
        /// </summary>
        public virtual bool Add(TModel Tmodel) { return false; }
        /// <summary>
        /// 更新【继承类重写后才能正常使用】
        /// </summary>
        public virtual bool Update(TModel Tmodel) { return false; }
        /// <summary>
        /// 删除【继承类重写后才能正常使用】
        /// </summary>
        public virtual bool Delete(int Id) { return false; }
        /// <summary>
        /// 查找指定值【继承类重写后才能正常使用】
        /// </summary>
        public virtual TModel Find(int Id) { return default(TModel); }
        ~RepositoryBase()
        {
            if (dbContext != null)
            {
                dbContext.Dispose();
            }
        }
    }
}

可以写UserRepository的具体实现了,新建UserRepository类。重写Add,Update方法后代码如下:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using CMS.Models;

namespace CMS.Repository
{
    public class UserRepository:RepositoryBase<User>
    {
        private CMSContext dbContext;
        public UserRepository()
        {
            dbContext = new CMSContext();
        }
        /// <summary>
        /// 添加用户
        /// </summary>
        /// <param name="user">用户信息</param>
        /// <returns></returns>
        public override bool Add(User user)
        {
            if (user == null) return false;
            dbContext.Users.Add(user);
            if (dbContext.SaveChanges() > 0) return true;
            else return false;
        }
        /// <summary>
        /// 更新用户信息
        /// </summary>
        /// <param name="user"></param>
        /// <returns></returns>
        public override bool Update(User user)
        {
            var _user = dbContext.Users.SingleOrDefault(u => u.UserId == user.UserId);
            if (_user == null) return false;
            _user = user;
            if (dbContext.SaveChanges() > 0) return true;
            else return false;
        }
        //public override 
    }
}

到这里Repository的基本模式也出来了,现在MVC中的M和C都出来了就差V了,少了V相当于高富帅少了“富”在高,再帅都没用。那么马上下手为了写view做准备。

@Html.Label可以用来显示字段的Display(Name=“”),@Html.DisplayText显示模型中字段值。没有找到用来显示模型中字段的Display(……,Description=“”)属性的HtmlHelper。先自己写一个用。在项目中新建Extensions文件夹,右键添加类DisplayDescriptionExtensions,在生成的代码中将命名空间改为System.Web.Mvc.Html,添加两个静态方法DisplayDescription和DisplayDescriptionFor。完成后代码

using System.Linq.Expressions;

namespace System.Web.Mvc.Html
{
    public static class DisplayDescriptionExtensions
    {
        /// <summary>
        /// 模型描述信息
        /// </summary>
        /// <param name="htmlHelper"></param>
        /// <param name="name"></param>
        /// <returns></returns>
        public static MvcHtmlString DisplayDescription(this HtmlHelper htmlHelper, string name)
        {
            ModelMetadata _modelMetadata = ModelMetadata.FromStringExpression(name, htmlHelper.ViewData);
            return MvcHtmlString.Create(_modelMetadata.Description);
        }
        /// <summary>
        /// 模型描述信息
        /// </summary>
        /// <typeparam name="TModel"></typeparam>
        /// <typeparam name="TResult"></typeparam>
        /// <param name="htmlHelper"></param>
        /// <param name="expression"></param>
        /// <returns></returns>
        public static MvcHtmlString DisplayDescriptionFor<TModel, TResult>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TResult>> expression)
        {
            ModelMetadata _modelMetadata = ModelMetadata.FromLambdaExpression(expression,htmlHelper.ViewData);
            return MvcHtmlString.Create(_modelMetadata.Description);
        }
    }
}

好了,在视图中就可以直接用@Html.DisplayDescriptionFor(model => model.UserName)或@Html.DisplayDescription(“.UserName”)调用描述信息了.

到了这里后,大致的准备工作差不多了,还有两个小东东实现一下就可以写具体功能了。

第一个小东东:验证码。验证码分两块一是随机获取一定位数的字符,另一块是把字符绘制成图片。

在项目中添加Common 文件夹,在文件夹中新建Text类,在类实现函数VerificationText()利用Random获取指定长度的随机字符串,写完后的代码:

using System;

namespace CMS.Common
{
    /// <summary>
    /// 文本相关
    /// </summary>
    public class Text
    {
        /// <summary>
        /// 获取验证码【字符串】
        /// </summary>
        /// <param name="Length">验证码长度【必须大于0】</param>
        /// <returns></returns>
        public static string VerificationText(int Length)
        {
            char[] _verification = new Char[Length];
            Random _random = new Random();
            char[] _dictionary = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' };
            for (int i = 0; i < Length; i++)
            {
                _verification[i] = _dictionary[_random.Next(_dictionary.Length - 1)];
            }
            return new string(_verification);
        }
    }
}

现在可以绘制验证码了,这里会用到.net的GDI+,我看了很多朋友写的验证码,一般都绘制了很多干扰点和干扰线,目的是为了使验证码不容易被电脑,个人觉得把绘制字的时候用材质刷绘制应该也能达到目的,所以找了一幅水彩画的材质。

image

用这个做字的材质也应该不太容易别识别吧,开始写绘图的代码,在UserController里新建名为VerificationCode的Action,代码如下:

/// <summary>
        /// 绘制验证码
        /// </summary>
        /// <returns></returns>
        public ActionResult VerificationCode()
        {
            int _verificationLength = 6;
            int _width = 100, _height = 20;
            SizeF _verificationTextSize;
            Bitmap _bitmap = new Bitmap(Server.MapPath("~/Skins/Common/Texture.jpg"),true);
            TextureBrush _brush = new TextureBrush(_bitmap);
            //获取验证码
            string _verificationText = Common.Text.VerificationText(_verificationLength);
            //存储验证码
            Session["VerificationCode"] = _verificationText.ToUpper();
            Font _font = new Font("Arial", 14, FontStyle.Bold);
            Bitmap _image = new Bitmap(_width, _height);
            Graphics _g = Graphics.FromImage(_image);
            //清空背景色
            _g.Clear(Color.White);
            //绘制验证码
            _verificationTextSize = _g.MeasureString(_verificationText, _font);
            _g.DrawString(_verificationText,_font,_brush,(_width-_verificationTextSize.Width)/2,(_height-_verificationTextSize.Height)/2);
            _image.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);
            return null;
        }

打开浏览器看下效果 image 还不错。到此准备工作完成。