.net 项目总结 day02学习

功能实现

代码功能图片截取　　返回上次访问位置退出登录找回密码邮件

1 图片截取,使用jquery.imgareaselect.min.js

  1 <%@ Page Title="" Language="C#" MasterPageFile="~/Master/UserMaster.Master" AutoEventWireup="true" CodeBehind="UserCenter.aspx.cs" Inherits="Maticsoft.Web.UserInfoManager.UserCenter" %>
  2 <asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
  3 <style type="text/css">
  4         #divCut {
  5             background-position: top left
  6         }
  7     </style>
  8     <link href="/Css/imgareaselect-default.css" rel="stylesheet" />
  9     <script src="/js/jquery.imgareaselect.min.js"></script>
 10     <script src="/SWFUpload/swfupload.js"></script>
 11     <script src="/SWFUpload/handlers.js"></script>
 12      <script type="text/javascript">
 13          var swfu;
 14          window.onload = function () {
 15              swfu = new SWFUpload({
 16                  // Backend Settings
 17                  upload_url: "/ashx/upload.ashx?action=up",
 18                  post_params: {
 19                      "ASPSESSID": "<%=Session.SessionID %>"
 20                  },
 21 
 22                  // File Upload Settings
 23                  file_size_limit: "2 MB",
 24                  file_types: "*.jpg;*.gif",
 25                  file_types_description: "JPG Images",
 26                  file_upload_limit: 0,    // Zero means unlimited
 27 
 28                  // Event Handler Settings - these functions as defined in Handlers.js
 29                  //  The handlers are not part of SWFUpload but are part of my website and control how
 30                  //  my website reacts to the SWFUpload events.
 31                  swfupload_preload_handler: preLoad,
 32                  swfupload_load_failed_handler: loadFailed,
 33                  file_queue_error_handler: fileQueueError,
 34                  file_dialog_complete_handler: fileDialogComplete,
 35                  upload_progress_handler: uploadProgress,
 36                  upload_error_handler: uploadError,
 37                  upload_success_handler: showImage,
 38                  upload_complete_handler: uploadComplete,
 39 
 40                  // Button settings
 41                  button_image_url: "/SWFUpload/images/XPButtonNoText_160x22.png",
 42                  button_placeholder_id: "spanButtonPlaceholder",
 43                  button_width: 160,
 44                  button_height: 22,
 45                  button_text: '<span class="button">请选择上传图片<span class="buttonSmall">(2 MB Max)</span></span>',
 46                  button_text_style: '.button { font-family: Helvetica, Arial, sans-serif; font-size: 14pt; } .buttonSmall { font-size: 10pt; }',
 47                  button_text_top_padding: 1,
 48                  button_text_left_padding: 5,
 49 
 50                  // Flash Settings
 51                  flash_url: "/SWFUpload/swfupload.swf",    // Relative to this file
 52                  flash9_url: "/SWFUpload/swfupload_FP9.swf",    // Relative to this file
 53 
 54                  custom_settings: {
 55                      upload_target: "divFileProgressContainer"
 56                  },
 57 
 58                  // Debug Settings
 59                  debug: false
 60              });
 61          }
 62          //上传成功以后调用该方法
 63          function showImage(file, serverData) {
 64              //$("#imgSrc").attr("src", serverData);
 65              var data = serverData.split(':');
 66              if (data[0] == "ok") {
 67                  //建上传成功的图片作为divContent的背景.
 68                  //$("#divContent").css("backgroundImage", "url(" + data[1] + ")").css("width", data[2] + "px").css("height", data[3] + "px");
 69                  $("#selectbanner").attr("src", data[1]);//给定img的数据
 70                  $('#selectbanner').imgAreaSelect({
 71                      selectionColor: 'blue', x1: 0, y1: 0, x2: 150, y2: 100,
 72 
 73                      //maxWidth: 950, minWidth: 950,  minHeight: 400, maxHeight: 400,
 74 
 75                      selectionOpacity: 0.2, onSelectEnd: preview
 76                  });
 77                  $('#selectbanner').data('x', 0);
 78 
 79                  $('#selectbanner').data('y', 0);
 80 
 81                  $('#selectbanner').data('w',150);
 82 
 83                  $('#selectbanner').data('h', 100);
 84                  $("#imagePath").val(data[1]);//将上传成功的头像存储到隐藏域中。
 85              } else {
 86                  alert(serverData[1]);
 87              }
 88          }
 89          //选择结束以后调用该方法(确定出要截取头像的范围，并且通过data方法存储要截取头像范围的数据)
 90          function preview(img, selection) {
 91 
 92              $('#selectbanner').data('x', selection.x1);
 93 
 94              $('#selectbanner').data('y', selection.y1);
 95 
 96              $('#selectbanner').data('w', selection.width);
 97 
 98              $('#selectbanner').data('h', selection.height);
 99 
100          }
101 
102 
103          $(function () {
104              //$("#divCut").resizable({
105              //    containment: "parent"
106              //}).draggable({ containment: "parent" });
107              $("#btnPhotoCut").click(function () {
108                  ////确定要截取头像的范围。
109                  //var y = $("#divCut").offset().top - $("#divContent").offset().top;//计算出纵坐标.
110                  //var x = $("#divCut").offset().left - $("#divContent").offset().left;
111                  //var width = $("#divCut").width();
112                  //var height = $("#divCut").height();
113                  //var pars = {
114                  //    x: x,
115                  //    y: y,
116                  //    width:width,
117                  //    height: height,
118                  //    action: "cut",
119                  //    imagePath: $("#imagePath").val()
120 
121                  //};
122 
123                  var pars = {
124 
125                      x: $('#selectbanner').data('x'),
126 
127                      y: $('#selectbanner').data('y'),
128 
129                      width: $('#selectbanner').data('w'),
130 
131                      height: $('#selectbanner').data('h'),
132 
133                      imagePath: $("#imagePath").val(),
134                      action: "cut",
135 
136                  };
137                  //根据确定的范围进行头像的截取.
138                  $.post("/ashx/upload.ashx", pars, function (data) {
139                      $("#imgSrc").attr("src", data);//截取成功后的数据
140                  });
141              });
142          });
143     </script>
144 
145 
146 </asp:Content>
147 <asp:Content ID="Content2" ContentPlaceHolderID="cphContent" runat="server">
148 
149     <div id="content">
150         <div id="swfu_container" style="margin: 0px 10px;">
151             <div>
152                 <span id="spanButtonPlaceholder"></span>
153             </div>
154             <div id="divFileProgressContainer" style="height: 75px;"></div>
155             <div id="thumbnails"></div>
156            <%-- <div id="divContent" style="width:300px; height:300px">
157                 <div id="divCut" style="width:100px; height:100px;border:solid 1px red">
158 
159                 </div>
160             </div>--%>
161             <img id="selectbanner"/>
162             <input type="button" value="头像截取" id="btnPhotoCut" />
163             <input type="hidden" id="imagePath" />
164             <br />
165             <img id="imgSrc" />
166         </div>
167         </div>
168 </asp:Content>

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Drawing;
  4 using System.IO;
  5 using System.Linq;
  6 using System.Web;
  7 
  8 namespace Maticsoft.Web.ashx
  9 {
 10     /// <summary>
 11     /// upload 的摘要说明
 12     /// </summary>
 13     public class upload : IHttpHandler
 14     {
 15 
 16         public void ProcessRequest(HttpContext context)
 17         {
 18             context.Response.ContentType = "text/plain";
 19             //context.Response.Write("Hello World");
 20             string action = context.Request["action"];
 21             if (action == "up")
 22             {
 23                 fileUpload(context);//上传图片
 24 
 25             }
 26             else if (action == "cut")
 27             {
 28                 cutFileImage(context);//截取图片文件
 29             }
 30             else
 31             {
 32                 context.Response.Write("参数异常！1");
 33             }
 34         }
 35         #region 截取图片文件
 36        
 37         private void cutFileImage(HttpContext context)
 38         {
 39             int x = Convert.ToInt32(context.Request["x"]);
 40             int y = Convert.ToInt32(context.Request["y"]);
 41             int width = Convert.ToInt32(context.Request["width"]);
 42             int height = Convert.ToInt32(context.Request["height"]);
 43             string imagePath = context.Request["imagePath"];
 44             using (Bitmap map =  new Bitmap(width,height))
 45             {
 46                 using (Graphics g = Graphics.FromImage(map))
 47                 {
 48                     using (Image img = Image.FromFile(context.Request.MapPath(imagePath)))
 49                     {
 50                         //将原图的指定范围画到画布上.
 51                         //1:表示对哪张图片进行操作
 52                         //2:画多么大.
 53                         //3:画原图的哪块区域
 54                         g.DrawImage(img, new Rectangle(0, 0, width, height), new Rectangle(x, y, width, height), GraphicsUnit.Pixel);
 55                         string fileNewName = Guid.NewGuid().ToString();
 56                         string fullDir = "/UploadImage/" + fileNewName + ".jpg";
 57                         map.Save(context.Request.MapPath(fullDir), System.Drawing.Imaging.ImageFormat.Jpeg);//保存图片.
 58                         //一定要将截取后的图片路径存储到数据库中。
 59                         context.Response.Write(fullDir);
 60                     }
 61                 }
 62             }
 63             //throw new NotImplementedException();
 64         }
 65         #endregion
 66         #region 上传图片
 67         private void fileUpload(HttpContext context)
 68         {
 69             HttpFileCollection collection = context.Request.Files;
 70             bool isSucess = false;
 71             if (collection.Count > 0)
 72             {
 73                 HttpPostedFile file = context.Request.Files["Filedata"];
 74                 if (file != null)
 75                 {
 76                     string fileName = Path.GetFileName(file.FileName);
 77                     string fileExt = Path.GetExtension(fileName);
 78                     if (fileExt == ".jpg")
 79                     {
 80                         string dir = "/UploadImage/" + DateTime.Now.Year + "/" + DateTime.Now.Month + "/" + DateTime.Now.Day + "/";
 81                         if (!Directory.Exists(context.Request.MapPath(dir)))
 82                         {
 83                             Directory.CreateDirectory(context.Request.MapPath(dir));
 84                         }
 85                         string newfileName = Guid.NewGuid().ToString();
 86                         string fullDir = dir + newfileName + fileExt;
 87                         file.SaveAs(context.Request.MapPath(fullDir));
 88                         isSucess = true;
 89                         using (Image img = Image.FromFile(context.Request.MapPath(fullDir)))
 90                         {
 91                             context.Response.Write("ok:" + fullDir + ":" + img.Width + ":" + img.Height);
 92                         }
 93                         //file.SaveAs(context.Request.MapPath("/UploadImage/" + fileName));
 94                         //context.Response.Write("/UploadImage/" + fileName);
 95                     }
 96                 }
 97             }
 98             if (!isSucess)
 99             {
100                 context.Response.Write("no:上传失败!!");
101             }
102         }
103         #endregion
104 
105         public bool IsReusable
106         {
107             get
108             {
109                 return false;
110             }
111         }
112     }
113 }

2 基本登陆与自动登录

3 返回上次访问位置

 1 using Maticsoft.BLL;
 2 using System;
 3 using System.Collections.Generic;
 4 using System.Linq;
 5 using System.Web;
 6 
 7 namespace Maticsoft.Web.CheckUserState
 8 {//使用频率较高时  其他页面直接继承checkusersession    就不需要多次书写
 9     public class CheckSession : System.Web.UI.Page
10     {
11         public void Page_Init(object sender, EventArgs e)
12         {
13             if (Session["userInfo"] == null)
14             {
15                 if (Request.Cookies["cp1"] != null)
16                 {
17                     UsersManager userManager = new UsersManager();
18                     string userName = Request.Cookies["cp1"].Value;//查询是否存在此用户名
19                     Model.Users userInfo = userManager.GetModel(userName);
20                     if (!Common.WebCommon.CheckCookieInfo(userInfo))
21                     {
22                         // Response.Redirect("/Account/Login.aspx");
23                         Common.WebCommon.ReturnRedirect();
24                     }
25                 }
26                 else
27                 {
28                     //Response.Redirect("/Account/Login.aspx");
29                     Common.WebCommon.ReturnRedirect();
30                 }
31             }
32         }
33     }
34 }

4 退出登录

  /// <summary>
        /// 清除session
        /// </summary>
        /// <param name="context"></param>
        public void ProcessRequest(HttpContext context)
        { 
            context.Response.ContentType = "text/plain";
            //context.Response.Write("Hello World");
            if (context.Session["userInfo"] != null)
            {
                context.Session["userInfo"] = null;
                //清除cookie中的值
                context.Response.Cookies["cp1"].Expires = DateTime.Now.AddDays(-1);
                context.Response.Cookies["cp2"].Expires = DateTime.Now.AddDays(-1);
                context.Response.Write("ok");
            }
        }

5 注册跳转

　　验证码每次点击登录时直接强制过期，应该是为了，减少服务器端压力

6 找回密码

　　采用的是数据库更新密码，邮件发送新密码，数据库更新一定放在发送邮件后，防止邮件未发送而密码更改，

 /// <summary>
        /// 发送邮件
        /// </summary>
        /// <param name="context"></param>
        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            //context.Response.Write("Hello World");
            string mail = context.Request["mail"];
            UsersManager userInfoManager = new UsersManager();
            if (userInfoManager.CheckUserMail(mail))//表示有这个邮箱
            {
                userInfoManager.SendUserMail(mail);
                context.Response.Write("ok");
            }
            else
            {
                context.Response.Write("no");
            }
        }

  public bool CheckUserMail(string mail)
       {
           return dal.CheckUserMail(mail) > 0;
       }

/// <summary>
       /// 发送邮件   利用数据库存储源邮件信息，并存储在缓存中
       /// </summary>
       /// <param name="mail"></param>
       public void SendUserMail(string mail)
       {
           //1：系统产生一个新的密码(一定要替换用户在数据库中的旧密码,但是发送到用户邮箱中的密码必须是明文)，发送到用户邮箱中。
           //2:发送一个连接.
           SettingsManager settingManager = new SettingsManager();
           string newPwd = Guid.NewGuid().ToString().Substring(0, 8);

           Model.Users userInfo = dal.GetUserByMail(mail);//根据邮箱找用户
           userInfo.LoginPwd = Common.WebCommon.Md5String(Common.WebCommon.Md5String(newPwd));
           //注释的是用来邮件发送的缓存用法  
                MailMessage mailMsg = new MailMessage();//两个类，别混了，要引入System.Net这个Assembly
                mailMsg.From = new MailAddress(settingManager.GetModel("系统邮件地址").Value);//源邮件地址 
               
                mailMsg.To.Add(new MailAddress(mail));//目的邮件地址。可以有多个收件人
                mailMsg.Subject = "您在xxx网站新的账户";//发送邮件的标题 
                StringBuilder sb = new StringBuilder();
                sb.Append("您在xxx网站中新的账户如下:");
                sb.Append("用户名:"+userInfo.LoginId);
                sb.Append("密码是:"+newPwd);
                mailMsg.Body = sb.ToString();//发送邮件的内容 
                mailMsg.IsBodyHtml = true;
                //指定Smtp服务地址。(根据发件人邮箱指定对应的SMTP服务器地址)
               
                //SmtpClient client = new SmtpClient("smtp.qq.com");
                SmtpClient client = new SmtpClient(settingManager.GetModel("系统邮件SMTP").Value);//smtp.163.com，smtp.qq.com
                client.Credentials = new NetworkCredential(settingManager.GetModel("系统邮件用户名").Value, settingManager.GetModel("系统邮件密码").Value);//发件人邮箱的用户名密码
                client.Send(mailMsg);
                dal.Update(userInfo);//这一项必须放在最后



          
       }

 /// <summary>
        /// 根据配置项的名称找对应配置信息
        /// </summary>
        /// <param name="name">配置项的名称(key)</param>
        /// <returns></returns>
        public Model.Settings GetModel(string name)
        {
            object obj = Common.CacheHelper.Get("setting_" + name);
            if (obj == null)
            {
                Model.Settings setting = dal.GetModel(name);
                Common.CacheHelper.Set("setting_" + name, setting);
                return setting;
            }
            else
            {
                Model.Settings setting = obj as Model.Settings;
                return setting;

            }
        }

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

namespace Maticsoft.Common
{
   public class CacheHelper
    {
       /// <summary>
       /// 根据缓存的key，从缓存中取值.
       /// </summary>
       /// <param name="key"></param>
       /// <returns></returns>
       public static object Get(string key)
       {
           System.Web.Caching.Cache cache = HttpRuntime.Cache;
           return cache[key];
       }
       /// <summary>
       /// 向缓存中添加数据
       /// </summary>
       /// <param name="key"></param>
       /// <param name="value"></param>
       public static void Set(string key, object value)
       {
           System.Web.Caching.Cache cache = HttpRuntime.Cache;
           cache[key] = value;
       }

       /// <summary>
       /// 向缓存中添加数据
       /// </summary>
       /// <param name="key"></param>
       /// <param name="value"></param>
       public static void Set(string key, object value,DateTime time)
       {
           System.Web.Caching.Cache cache = HttpRuntime.Cache;
           cache.Insert(key, value, null, time, TimeSpan.Zero);
       }
         /// <summary>
       /// 移除缓存中的数据
       /// </summary>
       /// <param name="key"></param>
       /// <param name="value"></param>
       public static void Reomve(string key)
       {
           System.Web.Caching.Cache cache = HttpRuntime.Cache;
           cache.Remove(key);
       }

            
    }
}

posted @ 2019-07-22 23:34 衣带渐宽# 阅读(177) 评论(0) 收藏举报

刷新页面返回顶部