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asp.net跨域上传文件

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

前端:

 1 <!DOCTYPE html>
 2 <html>
 3 <head>
 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
 5     <title></title>
 6 </head>
 7 <body>
 8     <input type="file" id="myphoto" />
 9     <div style="display:none" id="div_div1">
10         <img src="#" id="img_myphoto" />
11     </div>
12 </body>
13 </html>
14 <script src="assets/js/jquery-1.7.1.js"></script>
15 <script type="text/javascript">
16     $("#myphoto").change(function () {
17         var file = this.files[0];
18         var formData = new FormData();
19         formData.append('tFile', file);
20         jQuery.support.cors = true;
21         $.ajax({
22             type: "POST", // 必须用post
23             url: "http://118.200.100.100:8080/uploadStudentIDCard.ashx?studentID=100",
24             crossDomain: true,
25             data: formData,
26             contentType: false,
27             processData: false,
28             success: function (data) {
29                 if (data.result == 1) {
30                     $("#img_myphoto").attr("src", "http://114.215.198.241:8086" + data.url);
31                     $("#div_div1").show();
32                 }
33             },
34             error: function (res) {
35                 alert('shit');
36             }
37         });
38     });
39 </script>
View Code

 后端:

  1 using JSXiangYu.JiSuJob.BLLFactory;
  2 using JSXiangYu.JiSuJob.IBLL;
  3 using JSXiangYu.JiSuJob.Utility;
  4 using System;
  5 using System.Collections.Generic;
  6 using System.Drawing;
  7 using System.IO;
  8 using System.Linq;
  9 using System.Web;
 10 
 11 namespace JSXiangYu.JiSuJob.WebApp.student.person
 12 {
 13     public class ResultData
 14     {
 15         public int _result;
 16         public string _msg;
 17     }
 18     /// <summary>
 19     /// uploadStudentIDCard 的摘要说明
 20     /// </summary>
 21     public class uploadStudentIDCard : IHttpHandler
 22     {
 23         IBLLSession bllSession = BLLSessionFactory.CreateBLLSession();//获取业务逻辑会话对象
 24         public void ProcessRequest(HttpContext context)
 25         {
 26             context.Response.ContentType = "Application/json";
 27             
 28             UploadStudentIDCard(context);
 29         }
 30 
 31         /// <summary>
 32         /// 上传学生证
 33         /// </summary>
 34         /// <param name="context"></param>
 35         private void UploadStudentIDCard(HttpContext context)
 36         {
 37             context.Response.AddHeader("Access-Control-Allow-Origin", "*");
 38             if (HttpContext.Current.Request.HttpMethod == "OPTIONS")
 39             {
 40                 HttpContext.Current.Response.AddHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS");
 41                 HttpContext.Current.Response.AddHeader("Access-Control-Allow-Headers", "Content-Type, Authorization, Accept,X-Requested-With");
 42                 HttpContext.Current.Response.End();
 43             }
 44 
 45             //1.采集数据
 46             //string kk = context.Request.Params["jsoncallback"];
 47             string studentIDStr = context.Request.Params["studentID"];//学生编号
 48             HttpPostedFile file = context.Request.Files["tFile"];//学生证
 49             //2.数据校验
 50             int studentID;
 51             if (!int.TryParse(studentIDStr, out studentID))
 52             {
 53                 context.Response.Write("{\"result\":2}");//学生编号格式有误(学生未登录)
 54                 context.Response.End();
 55                 return;
 56             }
 57             if (file == null)
 58             {
 59                 context.Response.Write("{\"result\":3}");//未上传学生证
 60                 context.Response.End();
 61                 return;
 62             }
 63 
 64             //3.处理业务逻辑
 65             //3.1处理存储文件的路径
 66             string fileName = Path.GetFileName(file.FileName);//文件的全名称
 67             string ext = fileName.Substring(fileName.LastIndexOf('.'));//文件的扩展名
 68             string dateBasePath;//保存身份证的相对路径
 69             string dateBasePath_m;//手机展示相对路径
 70             string path_m;//手机展示物理路径
 71             string guidStr = Guid.NewGuid().ToString() + ext;//图片名称用Guid命名
 72             //3.2物理路径
 73             string path = GetUploadFilePath(out dateBasePath, out dateBasePath_m, out path_m) + guidStr;//物理路径+文件全名称
 74             path_m += guidStr;//物理路径——手机端
 75             //3.3相对路径
 76             dateBasePath += guidStr;//相对路径+文件全名称
 77             dateBasePath_m += guidStr;//相对路径——手机端
 78             //3.4处理图片+上传图片
 79             Bitmap bmBig = new Bitmap(file.InputStream);
 80             FileExt.MakeThumbnail(bmBig, path, 1024, 600);
 81             Bitmap bmBig2 = new Bitmap(file.InputStream);
 82             FileExt.MakeThumbnail(bmBig2, path_m, 336, 240);
 83             //3.5判断学生账号是否存在
 84             IStudentServer _studentServer = bllSession.StudentServer;
 85             if (!_studentServer.IsExistStudentAccount(studentID))
 86             {
 87                 context.Response.Write("{\"result\":4}");//不存在该学生账号
 88                 context.Response.End();
 89                 return;
 90             }
 91             //3.6更新学生信息
 92             if (_studentServer.UpdateStudentInfoOfStudentIDCard(studentID, dateBasePath, dateBasePath_m))
 93             {
 94                 context.Response.Write("{\"result\":1,\"url\":\"" + dateBasePath_m + "\"}");//图片上传成功
 95                 context.Response.End();
 96                 return;
 97             }
 98             else
 99             {
100                 context.Response.Write("{\"result\":0}");//图片上传失败
101                 context.Response.End();
102                 return;
103             }
104         }
105 
106 
107         /// <summary>
108         /// 处理保存学生证的路径
109         /// </summary>
110         /// <param name="newPath">相对路径</param>
111         /// <returns>返回物理路径</returns>
112         private string GetUploadFilePath(out string newPath, out string dateBasePath_m, out string path_m)
113         {
114             DateTime date = DateTime.Now;
115             string tempPath = date.Year + "/" + date.Month + "/" + date.Day + "/";
116 
117             string oldPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "assets/img/student/studentIDCard/");//原始路径
118             oldPath += tempPath;//压缩图片物理路径
119 
120             path_m = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "assets/img/student/studentIDCard_m/");//原始路径
121             path_m += tempPath;//压缩图片物理路径——手机端
122 
123             if (!Directory.Exists(oldPath))
124             {
125                 Directory.CreateDirectory(oldPath);
126             }
127             if (!Directory.Exists(path_m))
128             {
129                 Directory.CreateDirectory(path_m);
130             }
131             newPath = "/assets/img/student/studentIDCard/" + tempPath;//压缩图片相对路径
132             dateBasePath_m = "/assets/img/student/studentIDCard_m/" + tempPath;//压缩图片相对路径——手机端
133             return oldPath;
134         }
135 
136         public bool IsReusable
137         {
138             get
139             {
140                 return false;
141             }
142         }
143     }
144 }
View Code

 


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