1、对MVC的认识
1、启动项在Global.asax.cs文件中，RouteConfig.RegisterRoutes(RouteTable.Routes);定义路由事件，可以设置启动项【默认是Home/Index】；
2、Views/Home/Index.cshtml文件是页面内容，在@....@中直接写C#语句。该页面可以用easyui进行布局、控件样式模仿等；
2、知识点
2.1、小知识
<iframe src="/NewList/Index" scrolling="no" width="100%" height="100%" frameborder="0"></iframe> src是iframe中的url
overflow:hidden影藏滚动条
版权符号：“©”
2.2、超链接
eg：点击新闻管理就打开这个页面
<div title="新闻管理" iconCls="icon-ok" style="overflow:auto;padding:10px;">
<a href="javascript:void(0)" class="detailLink123" url="/NewList/Index">新闻管理</a>
</div>
1 <script type="text/javascript"> 2 $(function () { 3 binClickEvent(); 4 }); 5 function binClickEvent() { 6 //绑定超链接的单击事件 7 $(".detailLink123").click(function () { 8 var title = $(this).text(); 9 var url = $(this).attr("url"); 10 var isExt = $('#tt').tabs('exists', title);//判断页签是否存在 11 if (isExt) { //如果该标签页存在，就不增加新的标签页了 12 $('#tt').tabs('select', title); 13 return; 14 } 15 16 $('#tt').tabs('add', { 17 title: title, 18 content: showContent(url), 19 closable: true 20 }); 21 22 }); 23 } 24 //页签中显示的内容 25 function showContent(url) { 26 var strHtml = '<iframe src="' + url + '" scrolling="no" width="100%" height="100%" frameborder="0"></iframe>'; 27 return strHtml; 28 } 29 </script>
2.3、验证用户登录
<script type="text/javascript"> //刷新验证码 function changeCheckCode() { //得到img元素，给它的src属性赋值 $("#img").attr("src",$("#img").attr("src")+1); //第一次id=1,第二次id=2 } //登录成功后的回调函数 function afterLogin(data) {//data为LoginController中UserLogin方法的返回值 var serverData = data.split(':'); //数据用：来分隔，得到的是数组 if (serverData[0] == "ok") { window.location.href = "/Home/Index"; //成功，跳转 } else if (serverData[0] == "no") { $("#errorMsg").text(serverData[1]); //失败，返回错误信息，刷新验证码 changeCheckCode(); } else { $("#errorMsg").text("系统繁忙!!"); //否则系统繁忙 } } </script> <!--使用ajax异步，OnSucess是回调函数，当登录成功后做什么--> @using (Ajax.BeginForm("UserLogin", new { }, new AjaxOptions() { HttpMethod = "post", OnSuccess = "afterLogin" }, new { id = "loginForm" })) { <table cellpadding="0" cellspacing="0"> <tbody> <tr> <td align="left" colspan="2"> <h3> 请使用传智播客CMS系统账号登录 </h3> </td> </tr> <tr> <td align="right"> 账号： </td> <td align="left"> <input type="text" name="LoginCode" id="LoginCode" class="login-text" /> </td> </tr> <tr> <td align="right"> 密码： </td> <td align="left"> <input type="password" name="LoginPwd" id="LoginPwd" value="123" class="login-text" /> </td> </tr> <tr> <td> 验证码： </td> <td align="left"> <input type="text" class="login-text" id="code" name="vCode" value="1" /> </td> </tr> <tr> <td></td> <td> <!--这里加/?id=1,是为了每点击刷新一次id加1，都是一个新的url，浏览器会重新加载触发这个方法，而不使用缓存--> <img id="img" src="/Login/ShowValidateCode/?id=1" style="float: left; height: 24px;" /> <div style="float: left; margin-left: 5px; margin-top: 10px;"> <a href="javascript:void(0)" onclick="changeCheckCode();return false;">看不清，换一张</a> </div> </td> </tr> <tr> <td align="center" colspan="2"> <input type="submit" id="btnLogin" value="登录" class="login-btn" /> <span id="errorMsg"></span> </td> </tr> </tbody> </table> }
//Controller类 /// <summary> /// MVC写一个功能的步骤： /// 1、创建Controller /// 2、添加View /// 3、在Controller中调用BLL,BLL中调用DAL /// </summary> public class LoginController : Controller { //引用BLL、Model、Common层 BLL.UserInfoService userInfoBll = new BLL.UserInfoService(); // GET: Login public ActionResult Index() //指向Login/Index.cshtml文件 { return View(); } public ActionResult UserLogin() { //1、判断验证码是否正确 string code = Session["code"]== null ? string.Empty : Session["code"].ToString(); if (string.IsNullOrEmpty(code)) return Content("no:验证码不能为空！"); Session["code"] = null; //清空seesion记录 string userCode = Request["vCode"]; //得到用户输入的验证码 if (!userCode.Equals(code, StringComparison.InvariantCultureIgnoreCase)) return Content("no:验证码不正确！"); //2、用户名密码是否正确，首先在Dal层查询逻辑，在Bll层中调用Dal层，再Controller中调用Bll层 string userName = Request["LoginCode"]; string userPwd = Request["LoginPwd"]; Model.UserInfo user = userInfoBll.GetUserInfo(userName, userPwd); if (user != null) //该用户名密码存在 { Session["UserInfo"] = user; return Content("ok: 用户登录成功!"+ user.UserName + user.UserMail); //Content用作返回标识 } else return Content("no: 用户名密码不正确!"); } /// <summary> /// ActionResult是一个父类，可以返回很多类型（视图、图片...） /// </summary> /// <returns></returns> public ActionResult ShowValidateCode() { Common.ValidateCode ValidateCode = new Common.ValidateCode(); string code = ValidateCode.CreateValidateCode(4); //获取验证码 Session["code"] = code; //把code保存在Session中，以便和用户输入的code作比较 byte[] buf = ValidateCode.CreateValidateGraphic(code); //获取图片 return File(buf, "image/jpeg"); } } //Bll public UserInfo GetUserInfo(string name, string pwd) { return userInfoDal.GetUserInfo(name, pwd); } //Dal public UserInfo GetUserInfo(string userName, string userPwd) { string sql = "select * from UserInfo where UserName = :userName and UserPwd = :userPwd"; OracleParameter[] pars = { new OracleParameter(":userName", OracleType.NVarChar, 50), new OracleParameter(":userPwd", OracleType.NVarChar,50)}; pars[0].Value = userName; pars[1].Value = userPwd; //调用方法查询 DataTable dt = SqlHelper.GetTable(sql, CommandType.Text, pars); UserInfo user = null; if(dt.Rows.Count > 0) { user = new UserInfo(); LoadEntity(user, dt.Rows[0]); //加载一行数据 } return user; } private void LoadEntity(UserInfo user, DataRow row) { user.UserId = Convert.ToInt32(row["ID"]); //数据库中不允许为空的不用判断 //数据库中允许为空的，如果为空则给它赋值一个空字符串 user.UserName = row["UserName"] != DBNull.Value ? row["UserName"].ToString() : string.Empty; user.UserPwd = row["UserPwd"] != DBNull.Value ? row["UserPwd"].ToString() : string.Empty; user.UserMail = row["UserMail"] != DBNull.Value ? row["UserMail"].ToString() : string.Empty; user.RegTime = Convert.ToDateTime(row["RegTime"]); }
using System; using System.Collections.Generic; using System.Configuration; using System.Data; using System.Data.OracleClient; using System.Linq; using System.Text; using System.Threading.Tasks; namespace CMS.DAL { public class SqlHelper { private static readonly string conStr = ConfigurationManager.ConnectionStrings["ConStr"].ConnectionString; /// <summary> /// 查询 /// </summary> /// <param name="sql"></param> /// <param name="type"></param> /// <param name="parms"></param> /// <returns></returns> public static DataTable GetTable(string sql, CommandType type, params OracleParameter[] parms) { using(OracleConnection conn = new OracleConnection(conStr)) { using(OracleDataAdapter adapter = new OracleDataAdapter(sql, conn)) { adapter.SelectCommand.CommandType = type;//设置数据类型 if (parms != null) adapter.SelectCommand.Parameters.AddRange(parms); DataTable dt = new DataTable(); adapter.Fill(dt); return dt; } } } /// <summary> /// 增删改 /// </summary> /// <param name="sql"></param> /// <param name="type"></param> /// <param name="pars"></param> /// <returns>影响的行数</returns> public static int ExecuteNonQuery(string sql, CommandType type, params OracleParameter[] pars) { using(OracleConnection conn = new OracleConnection(conStr)) { using(OracleCommand cmd = new OracleCommand(sql, conn)) { cmd.CommandType = type; if (pars != null) cmd.Parameters.AddRange(pars); conn.Open(); return cmd.ExecuteNonQuery(); } } } /// <summary> /// 返回条数 /// </summary> /// <param name="sql"></param> /// <param name="type"></param> /// <param name="pars"></param> /// <returns></returns> public static int ExecuteScalar(string sql, CommandType type, params OracleParameter[] pars) { using (OracleConnection conn = new OracleConnection(conStr)) { using (OracleCommand cmd = new OracleCommand(sql, conn)) { cmd.CommandType = type; if (pars != null) cmd.Parameters.AddRange(pars); conn.Open(); return Convert.ToInt32(cmd.ExecuteScalar()) ; } } } } }
using System; using System.Collections.Generic; using System.Drawing; using System.Drawing.Drawing2D; using System.Drawing.Imaging; using System.IO; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Web; namespace CMS.Common { public class ValidateCode { public ValidateCode() { } /// <summary> /// 验证码的最大长度 /// </summary> public int MaxLength { get { return 10; } } /// <summary> /// 验证码的最小长度 /// </summary> public int MinLength { get { return 1; } } /// <summary> /// 生成验证码 /// </summary> /// <param name="length">指定验证码的长度</param> /// <returns></returns> public string CreateValidateCode(int length) { int[] randMembers = new int[length]; int[] validateNums = new int[length]; string validateNumberStr = ""; //生成起始序列值 int seekSeek = unchecked((int)DateTime.Now.Ticks); Random seekRand = new Random(seekSeek); int beginSeek = (int)seekRand.Next(0, Int32.MaxValue - length * 10000); int[] seeks = new int[length]; for (int i = 0; i < length; i++) { beginSeek += 10000; seeks[i] = beginSeek; } //生成随机数字 for (int i = 0; i < length; i++) { Random rand = new Random(seeks[i]); int pownum = 1 * (int)Math.Pow(10, length); randMembers[i] = rand.Next(pownum, Int32.MaxValue); } //抽取随机数字 for (int i = 0; i < length; i++) { string numStr = randMembers[i].ToString(); int numLength = numStr.Length; Random rand = new Random(); int numPosition = rand.Next(0, numLength - 1); validateNums[i] = Int32.Parse(numStr.Substring(numPosition, 1)); } //生成验证码 for (int i = 0; i < length; i++) { validateNumberStr += validateNums[i].ToString(); } return validateNumberStr; } /// <summary> /// 创建验证码的图片 /// </summary> /// <param name="context">要输出到的page对象</param> /// <param name="validateNum">验证码</param> public void CreateValidateGraphic(string validateCode, HttpContext context) { Bitmap image = new Bitmap((int)Math.Ceiling(validateCode.Length * 12.0), 22); Graphics g = Graphics.FromImage(image); try { //生成随机生成器 Random random = new Random(); //清空图片背景色 g.Clear(Color.White); //画图片的干扰线 for (int i = 0; i < 25; i++) { int x1 = random.Next(image.Width); int x2 = random.Next(image.Width); int y1 = random.Next(image.Height); int y2 = random.Next(image.Height); g.DrawLine(new Pen(Color.Silver), x1, y1, x2, y2); } Font font = new Font("Arial", 12, (FontStyle.Bold | FontStyle.Italic)); LinearGradientBrush brush = new LinearGradientBrush(new Rectangle(0, 0, image.Width, image.Height), Color.Blue, Color.DarkRed, 1.2f, true); g.DrawString(validateCode, font, brush, 3, 2); //画图片的前景干扰点 for (int i = 0; i < 100; i++) { int x = random.Next(image.Width); int y = random.Next(image.Height); image.SetPixel(x, y, Color.FromArgb(random.Next())); } //画图片的边框线 g.DrawRectangle(new Pen(Color.Silver), 0, 0, image.Width - 1, image.Height - 1); //保存图片数据 MemoryStream stream = new MemoryStream(); image.Save(stream, ImageFormat.Jpeg); //输出图片流 context.Response.Clear(); context.Response.ContentType = "image/jpeg"; context.Response.BinaryWrite(stream.ToArray()); } finally { g.Dispose(); image.Dispose(); } } /// <summary> /// 得到验证码图片的长度 /// </summary> /// <param name="validateNumLength">验证码的长度</param> /// <returns></returns> public static int GetImageWidth(int validateNumLength) { return (int)(validateNumLength * 12.0); } /// <summary> /// 得到验证码的高度 /// </summary> /// <returns></returns> public static double GetImageHeight() { return 22.5; } //C# MVC 升级版 /// <summary> /// 创建验证码的图片 /// </summary> /// <param name="containsPage">要输出到的page对象</param> /// <param name="validateNum">验证码</param> public byte[] CreateValidateGraphic(string validateCode) { Bitmap image = new Bitmap((int)Math.Ceiling(validateCode.Length * 12.0), 22); Graphics g = Graphics.FromImage(image); try { //生成随机生成器 Random random = new Random(); //清空图片背景色 g.Clear(Color.White); //画图片的干扰线 for (int i = 0; i < 25; i++) { int x1 = random.Next(image.Width); int x2 = random.Next(image.Width); int y1 = random.Next(image.Height); int y2 = random.Next(image.Height); g.DrawLine(new Pen(Color.Silver), x1, y1, x2, y2); } Font font = new Font("Arial", 12, (FontStyle.Bold | FontStyle.Italic)); LinearGradientBrush brush = new LinearGradientBrush(new Rectangle(0, 0, image.Width, image.Height), Color.Blue, Color.DarkRed, 1.2f, true); g.DrawString(validateCode, font, brush, 3, 2); //画图片的前景干扰点 for (int i = 0; i < 100; i++) { int x = random.Next(image.Width); int y = random.Next(image.Height); image.SetPixel(x, y, Color.FromArgb(random.Next())); } //画图片的边框线 g.DrawRectangle(new Pen(Color.Silver), 0, 0, image.Width - 1, image.Height - 1); //保存图片数据 MemoryStream stream = new MemoryStream(); image.Save(stream, ImageFormat.Jpeg); //输出图片流 return stream.ToArray(); } finally { g.Dispose(); image.Dispose(); } } } }