asp.net 3.三层架构

其他 2018-06-28 16:23:45 阅读次数: 2

1.新建项目和类库

  CZBK.ItcastProject （空白项目）

  CZBK.ItcastProject.BLL （类库） -- 逻辑业务

  CZBK.ItcastProject.Common （类库） -- 工具层

  CZBK.ItcastProject.DAL 

  CZBK.ItcastProject.Model

  CZBK.ItcastProject.WebApp -- web项目

2. DAL

2.1 SqlHelper类 ：ADO.Net 连接数据库的相关

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data;
using System.Data.SqlClient;
namespace CZBK.ItcastProject.DAL
{
   public class SqlHelper
    {
       private static readonly string connStr = ConfigurationManager.ConnectionStrings["connStr"].ConnectionString;
       public static DataTable GetDataTable(string sql,CommandType type,params SqlParameter[]pars)
       {
           using (SqlConnection conn = new SqlConnection(connStr))
           {
               using (SqlDataAdapter apter = new SqlDataAdapter(sql, conn))
               {
                   if (pars != null)
                   {
                       apter.SelectCommand.Parameters.AddRange(pars);
                   }
                   apter.SelectCommand.CommandType = type;
                   DataTable da = new DataTable();
                   apter.Fill(da);
                   return da;
               }
           }
       }

       public static int ExecuteNonquery(string sql, CommandType type, params SqlParameter[] pars)
       {
           using (SqlConnection conn = new SqlConnection(connStr))
           {
               using (SqlCommand cmd = new SqlCommand(sql, conn))
               {
                   if (pars != null)
                   {
                       cmd.Parameters.AddRange(pars);
                   }
                   cmd.CommandType = type;
                   conn.Open();
                   return cmd.ExecuteNonQuery();
               }
           }
       }
    }
}

2.UserInfoDall类  针对表对象UserInfo的SQL语句操作，增删改查，还有将datatable转成对象

扫描二维码关注公众号，回复： 1776683 查看本文章 
using CZBK.ItcastProject.Model;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data;
using System.Data.SqlClient;
namespace CZBK.ItcastProject.DAL
{
    public class UserInfoDal
    {

        /// <summary>
        /// 获取用户列表
        /// </summary>
        /// <returns></returns>
        public List<UserInfo> GetList()
        {
            string sql = "select * from UserInfo";
            DataTable da = SqlHelper.GetDataTable(sql, CommandType.Text);
            List<UserInfo> list = null;
            if (da.Rows.Count > 0)
            {
                list = new List<UserInfo>();
                UserInfo userInfo = null;
                foreach (DataRow row in da.Rows)
                {
                    userInfo = new UserInfo();
                    LoadEntity(userInfo, row);
                    list.Add(userInfo);
                }
            }
            return list;
        }

        /// <summary>
        /// 获取一条用户信息 By ID
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public UserInfo GetDeail(int id)
        {
            string sql = "SELECT id,username,userpass,regtime,email FROM UserInfo where id = @id";
            SqlParameter [] pars ={
                                      new SqlParameter("@id",SqlDbType.Int)
                                  };
            pars[0].Value=id;
            DataTable dt = SqlHelper.GetDataTable(sql, CommandType.Text, pars);
            UserInfo instance = null;
            if(dt.Rows.Count>0)
            {
                instance = new UserInfo();
                LoadEntity(instance, dt.Rows[0]);
            }
            return instance;
        }

        /// <summary>
        /// 添加用户信息
        /// </summary>
        /// <param name="userInfo"></param>
        /// <returns></returns>
        public int AddUserInfo(UserInfo userInfo)
        {
            string sql = "insert into UserInfo(UserName,UserPass,RegTime,Email) values(@UserName,@UserPass,@RegTime,@Email)";
            SqlParameter[] pars = { 
                                new SqlParameter("@UserName",SqlDbType.NVarChar,32),
                                  new SqlParameter("@UserPass",SqlDbType.NVarChar,32),
                                         new SqlParameter("@RegTime",SqlDbType.DateTime),
                                    new SqlParameter("@Email",SqlDbType.NVarChar,32)
                                  };
            pars[0].Value = userInfo.UserName;
            pars[1].Value = userInfo.UserPass;
            pars[2].Value = userInfo.RegTime;
            pars[3].Value = userInfo.Email;
            return SqlHelper.ExecuteNonquery(sql, CommandType.Text, pars);
        }

        /// <summary>
        /// 更新用户信息
        /// </summary>
        /// <param name="userInfo"></param>
        /// <returns></returns>
        public int UpdateUserInfo(UserInfo userInfo)
        {
            string sql = "UPDATE UserInfo SET username = @username,userpass = @userpass,regtime = @regtime,email = @email WHERE id = @id";
            SqlParameter[] pars = {
                                       new SqlParameter("@username",SqlDbType.NVarChar,50),
                                       new SqlParameter("@userpass",SqlDbType.NVarChar,50),
                                       new SqlParameter("@regtime",SqlDbType.DateTime),
                                       new SqlParameter("@email",SqlDbType.NVarChar,50),
                                       new SqlParameter("@id",SqlDbType.Int)
                                   };
            pars[0].Value = userInfo.UserName;
            pars[1].Value = userInfo.UserPass;
            pars[2].Value = userInfo.RegTime;
            pars[3].Value = userInfo.Email;
            pars[4].Value = userInfo.Id;
            return SqlHelper.ExecuteNonquery(sql, CommandType.Text, pars);
        }

        /// <summary>
        /// 删除用户信息
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public int DeleteUserInfo(int id)
        {
            string sql = "DELETE FROM UserInfo WHERE id = @id";
            SqlParameter[] pars ={
                                      new SqlParameter("@id",SqlDbType.Int)
                                  };
            pars[0].Value = id;
            return SqlHelper.ExecuteNonquery(sql, CommandType.Text, pars);
        }

        private void LoadEntity(UserInfo userInfo, DataRow row)
        {
            userInfo.UserName = row["UserName"] != DBNull.Value ? row["UserName"].ToString() : string.Empty;

            userInfo.UserPass = row["UserPass"] != DBNull.Value ? row["UserPass"].ToString() : string.Empty;
            userInfo.Email = row["Email"] != DBNull.Value ? row["Email"].ToString() : string.Empty;
            userInfo.Id = Convert.ToInt32(row["ID"]);
            userInfo.RegTime = row["RegTime"] != DBNull.Value ? Convert.ToDateTime(row["RegTime"]) : DateTime.Now;
        }

    }
}

3.Model 

3.1 UserInfo类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CZBK.ItcastProject.Model
{
   public class UserInfo
    {
       public int Id { get; set; }
       public string UserName { get; set; }
       public string UserPass { get; set; }
       public DateTime RegTime { get; set; }
       public string Email { get; set; }
    }
}

4. Common

4.1 CacheControl类  --> .net框架 HttpRuntime.Cache缓存类的操作

using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.Web;
using System.Web.Caching;

namespace CZBK.ItcastProject.Common
{
    public class CacheControl
    {
        private static string devMode;

        public static TimeSpan DefaultCacheTime()
        {
            return new TimeSpan(5, 0, 0);
        }

        public static T Get<T>() where T : new()
        {
            string fullName = typeof(T).FullName;
            object cache = GetCache(fullName);
            if (cache == null)
            {
                T objObject = (T)Activator.CreateInstance(typeof(T));
                SetCache(fullName, objObject, DefaultCacheTime());
                return objObject;
            }
            return (T)cache;
        }

        public static object GetCache(string cacheKey)
        {
            if (devMode == "Y")
            {
                return null;
            }
            return HttpRuntime.Cache[cacheKey];
        }

        public static object GetObject(Type type)
        {
            string fullName = type.FullName;
            object cache = GetCache(fullName);
            if (cache == null)
            {
                object objObject = Activator.CreateInstance(type);
                SetCache(fullName, objObject, DefaultCacheTime());
                return objObject;
            }
            return cache;
        }

        public static object GetObject(Type type, Assembly dll)
        {
            string fullName = type.FullName;
            object cache = GetCache(fullName);
            if (cache == null)
            {
                object objObject = dll.CreateInstance(type.FullName, true);
                SetCache(fullName, objObject, DefaultCacheTime());
                return objObject;
            }
            return cache;
        }

        public static void RemoveCache(string cacheKey)
        {

            HttpRuntime.Cache.Remove(cacheKey);
        }

        public static void SetCache(string cacheKey, object objObject, TimeSpan slidingExpiration)
        {
            HttpRuntime.Cache.Insert(cacheKey, objObject, null, Cache.NoAbsoluteExpiration, slidingExpiration);
        }


    }
}

5.BLL 

5.1  UserInfoService类    UserInfo表对象的相关业务逻辑， 运用.net缓存Dal层的对象

using CZBK.ItcastProject.Model;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using CZBK.ItcastProject.DAL;
namespace CZBK.ItcastProject.BLL
{
   public class UserInfoService
    {
       UserInfoDal UserInfoDal = CZBK.ItcastProject.Common.CacheControl.Get<UserInfoDal>();

       /// <summary>
       /// 返回数据列表
       /// </summary>
       /// <returns></returns>
       public List<UserInfo> GetList()
       {
           return UserInfoDal.GetList();
       }

       /// <summary>
       /// 返回用户信息 一条
       /// </summary>
       /// <param name="id"></param>
       /// <returns></returns>
       public UserInfo GetDeail(int id)
       {
           return UserInfoDal.GetDeail(id);
       }

       /// <summary>
       /// 添加数据
       /// </summary>
       /// <param name="userInfo"></param>
       /// <returns></returns>
       public bool AddUserInfo(UserInfo userInfo)
       {
           return UserInfoDal.AddUserInfo(userInfo)>0;
       }

       /// <summary>
       /// 更新数据
       /// </summary>
       /// <param name="userInfo"></param>
       /// <returns></returns>
       public bool UpdateUserInfo(UserInfo userInfo)
       {
           return UserInfoDal.UpdateUserInfo(userInfo) > 0;
       }

       /// <summary>
       /// 删除数据
       /// </summary>
       /// <param name="id"></param>
       /// <returns></returns>
       public bool DeleteUserInfo(int id)
       {
           return UserInfoDal.DeleteUserInfo(id) > 0;
       }
    }
}

6. UI

6.1  用户列表

UserInfoList.ashx

using CZBK.ItcastProject.Model;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Web;

namespace CZBK.ItcastProject.WebApp
{
    /// <summary>
    /// UserInfoList 的摘要说明
    /// </summary>
    public class UserInfoList : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
           context.Response.ContentType = "text/html";
           BLL.UserInfoService UserInfoService = CZBK.ItcastProject.Common.CacheControl.Get<BLL.UserInfoService>();
           List<UserInfo>list= UserInfoService.GetList();
           StringBuilder sb = new StringBuilder();
           foreach (UserInfo userInfo in list)
           {
              sb.AppendFormat("<tr><td>{0}</td><td>{1}</td><td>{2}</td><td>{3}</td><td>{4}</td><td><a href='ShowDetail.ashx?id={0}'>详细</a></td><td><a href='DeleteUser.ashx?id={0}' class='deletes'>删除</a></td><td><a href='ShowEdit.ashx?id={0}' class='edits'>编辑</a></td></tr>", userInfo.Id, userInfo.UserName, userInfo.UserPass, userInfo.Email, userInfo.RegTime);
           }
            //读取模板文件
           string filePath = context.Request.MapPath("UserInfoList.html");
           string fileCotent = File.ReadAllText(filePath);
           fileCotent = fileCotent.Replace("@tbody",sb.ToString());
           context.Response.Write(fileCotent);
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}

 UserInfoList.html

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
    <link href="Css/tableStyle.css" rel="stylesheet" />
    <script src="Js/jquery-1.7.1.js"></script>
    <script type="text/javascript">
        $(function () {
            $(".deletes").click(function () {
                if (!confirm("确定要删除吗?")) {
                    return false;
                }
            });

            $(".edits").click(function () {
                if (!confirm("确定要编辑吗?")) {
                    return false;
                }
            });
        });
    </script>
</head>
    
<body>
    <a href="AddUserInfo.html">添加</a>
    <table>
        <tr>
          <th>编号</th>
          <th>用户名</th>
          <th>密码</th>
          <th>邮箱</th>
          <th>时间</th>
          <th>详细</th>
          <th>删除</th>
          <th>编辑</th>
        </tr>
       @tbody

    </table>
</body>
</html>

6.2 添加用户

AddUser.ashx

using CZBK.ItcastProject.Model;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace CZBK.ItcastProject.WebApp
{
    /// <summary>
    /// AddUser 的摘要说明
    /// </summary>
    public class AddUser : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            string userName=context.Request.Form["txtName"]; 
            string userPwd=context.Request.Form["txtPwd"];
            string userEmail=context.Request.Form["txtMail"];
            UserInfo userInfo = new UserInfo();
            userInfo.UserName = userName;
            userInfo.UserPass = userPwd;
            userInfo.Email = userEmail;
            userInfo.RegTime = DateTime.Now;
            BLL.UserInfoService UserInfoService = new BLL.UserInfoService();
            if (UserInfoService.AddUserInfo(userInfo))
            {
                context.Response.Redirect("UserInfoList.ashx");
            }
            else
            {
                context.Response.Redirect("Error.html");

            }
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}

AddUserInfo.html

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title>添加用户</title>
</head>
<body>
      <form method="post" action="AddUser.ashx">
        用户名:<input type="text" name="txtName" /><br />
        密码:<input type="password" name="txtPwd" /><br />
        邮箱:<input type="text" name="txtMail" /><br />
        <input type="submit" value="添加用户" />
    </form>
</body>
</html>

6.3 删除用户

DeleteUser.ashx

using CZBK.ItcastProject.Model;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace CZBK.ItcastProject.WebApp
{
    /// <summary>
    /// DeleteUser 的摘要说明
    /// </summary>
    public class DeleteUser : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            //context.Response.Write("Hello World");
            BLL.UserInfoService UserInfoService = CZBK.ItcastProject.Common.CacheControl.Get<BLL.UserInfoService>();
            string id = context.Request.QueryString["id"];
            int iid;
            if (int.TryParse(id, out iid))
            {
                if (UserInfoService.DeleteUserInfo(iid))
                {
                    context.Response.Redirect("UserInfoList.ashx");
                }
                else
                {
                    context.Response.Redirect("Error.html");
                }
            }
            else
            {
                context.Response.Redirect("Error.html");
            }
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}

6.4 显示用户详细信息

ShowDetail.ashx

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Web;
using CZBK.ItcastProject.Model;

namespace CZBK.ItcastProject.WebApp
{
    /// <summary>
    /// ShowDetail 的摘要说明
    /// </summary>
    public class ShowDetail : IHttpHandler
    {
        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/html";
            //context.Response.Write("Hello World");
            BLL.UserInfoService UserInfoService = CZBK.ItcastProject.Common.CacheControl.Get<BLL.UserInfoService>();
            string id = context.Request.QueryString["id"];
            int iid;
            if (int.TryParse(id, out iid))
            {
                UserInfo instance = UserInfoService.GetDeail(Convert.ToInt32(id));
                //读取模板文件
                string filePath = context.Request.MapPath("ShowDetail.html");
                string fileCotent = File.ReadAllText(filePath);
                fileCotent = fileCotent.Replace("$username", instance.UserName).Replace("$pwd", instance.UserPass).Replace("$email", instance.Email);
                context.Response.Write(fileCotent);
            }
            else
            {
                context.Response.Redirect("Error.html");
            }
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}

ShowDetail.html

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
</head>
<body>
    <form>
        用户名:<input type="text" name="txtName" value="$username" readonly="readonly" /><br />
        密码:<input type="password" name="txtPwd" value="$pwd" readonly="readonly" /><br />
        邮箱:<input type="text" name="txtMail" value="$email" readonly="readonly" /><br />
    </form>
</body>
</html>

6.5 编辑用户

ShowEdit.ashx

using CZBK.ItcastProject.Model;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Web;

namespace CZBK.ItcastProject.WebApp
{
    /// <summary>
    /// ShowEdit 的摘要说明
    /// </summary>
    public class ShowEdit : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/html";
            //context.Response.Write("Hello World");
            BLL.UserInfoService UserInfoService = CZBK.ItcastProject.Common.CacheControl.Get<BLL.UserInfoService>();
            string id = context.Request.QueryString["id"];
            int iid;
            if (int.TryParse(id, out iid))
            {
                UserInfo instance = UserInfoService.GetDeail(Convert.ToInt32(id));
                //读取模板文件
                string filePath = context.Request.MapPath("ShowEdit.html");
                string fileCotent = File.ReadAllText(filePath);
                fileCotent = fileCotent.Replace("$username", instance.UserName).Replace("$pwd", instance.UserPass).Replace("$email", instance.Email).Replace("$hid_id", id);
                context.Response.Write(fileCotent);
            }
            else
            {
                context.Response.Redirect("Error.html");
            }
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}

ShowEdit.html

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
</head>
<body>
    <form method="post" action="UpdateUser.ashx">
        用户名:<input type="text" name="txtName" value="$username" /><br />
        密码:<input type="password" name="txtPwd" value="$pwd" /><br />
        邮箱:<input type="text" name="txtMail" value="$email" /><br />
        <input type="hidden" name="hid_id" value="$hid_id" />
        <input type="submit" value="更新用户" />
    </form>
</body>
</html>

UpdateUser.ashx

using CZBK.ItcastProject.Model;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace CZBK.ItcastProject.WebApp
{
    /// <summary>
    /// UpdateUser 的摘要说明
    /// </summary>
    public class UpdateUser : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            string userName = context.Request.Form["txtName"];
            string userPwd = context.Request.Form["txtPwd"];
            string userEmail = context.Request.Form["txtMail"];
            string id = context.Request.Form["hid_id"];
            UserInfo userInfo = new UserInfo();
            userInfo.Id = Convert.ToInt32(id);
            userInfo.UserName = userName;
            userInfo.UserPass = userPwd;
            userInfo.Email = userEmail;
            userInfo.RegTime = DateTime.Now;
            BLL.UserInfoService UserInfoService = new BLL.UserInfoService();
            if (UserInfoService.UpdateUserInfo(userInfo))
            {
                context.Response.Redirect("UserInfoList.ashx");
            }
            else
            {
                context.Response.Redirect("Error.html");
            }
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}

猜你喜欢

转载自www.cnblogs.com/youguess/p/9239159.html
今日推荐
火速冲上 GitHub 热榜 —— 开源编程语言、框架哪有这么可爱？
北京人形机器人创新中心发布全球首个纯电驱拟人奔跑的全尺寸人形机器人“天工”
LFOSSA 源来如此公开课 | 掌握云原生未来：CNCF 认证全面攻略与备考秘籍
国产云输入法——仅华为无云端数据上传安全问题
开源日报 | 工业开源项目OGG 1.0；姐姐，你要和我一起配置火狐吗；苹果AI遥遥落后？Fedora 40
开放签电子签章：停止新增，优化体验，前进更进（五一假期前工作）
开源日报 | 中学生开源前端动画引擎；全球首个Llama3 8B中文版开源模型；联想电脑恐出局；Linus讽刺AI炒作
周排行
浏览器对同一域名进行请求的最大并发连接数
React Hook之自定义Hook
【转】MyBatis缓存机制
-Java-泛型
自动化测试常用脚本-发送邮件
LeetCode#859: Buddy Strings
java、Python处理字符串
第二篇の博客
Hadoop伪分布式环境安装
SQL Server进阶（十一）临时表、表变量
每日归档
更多
2024-04-27(56)
2024-04-26(39)
2024-04-25(22)
2024-04-24(36)
2024-04-23(26)
2024-04-22(39)
2024-04-21(0)
2024-04-20(6)
2024-04-19(5)
2024-04-18(0)

代码天地 © 2018 codetd.com

境外服务器   最新电视剧2022