ImportFileHandler 附件上传

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Web;
  5 using LitJson;
  6 using LY.CCPC.Model;
  7 using System.IO;
  8 using System.Reflection;
  9 using System.Data;
 10 using System.Configuration;
 11 using System.Collections.Specialized;
 12 using LY.CCPC.BLL;
 13 using LY.CCPCUEP.Utility;
 14 
 15 
 16 namespace LY.CCPCUEP.UI.Handlers
 17 {
 18     /// <summary>
 19     /// ImportFileHandler 的摘要说明
 20     /// </summary>
 21     public class ImportFileHandler : IHttpHandler
 22     {
 23         public void ProcessRequest(HttpContext context)
 24         {
 25             JsonObject json = new JsonObject() { Success = true };
 26              
 27             string fullMethod = context.Request.QueryString["mod"];
 28             string strType = context.Request.QueryString["type"];
 29             string fullFileName = string.Empty;
 30             FTPHelper ftp=getFtpPath();
 31             try
 32             {
 33                 HttpFileCollection fileColl = context.Request.Files;
 34                 string empid = context.User.Identity.Name;
 35                 if ("UPLOAD".Equals(fullMethod.ToUpper()))
 36                 {
 37                     HttpPostedFile file = fileColl[0];//得到上传的文件
 38 
 39                     //1.判断文件扩展名是否符合要求
 40                     string org_file_name = getOrgFileName(file.FileName);//初始文件名
 41                     string ext = getFileExtName(file.FileName);
 42                     ext = ext.ToLower();
 43                     string[] exts = new string[] { ".jpg", ".ppt", ".pptx", ".bmp", ".gif", ".png", ".jpeg", ".txt", ".csv", ".xls", ".xlsx", ".doc", ".docx", ".pdf", ".avi ", ".rmvb ", ".rm ", ".asf ", ".divx ", ".mpg ", ".mpeg ", ".mpe ", ".wmv ", ".mp4 ", ".mkv ", ".vob", ".rar", ".zip" };
 44                     if (!exts.Contains(ext))
 45                     {
 46                         json.Success = false;
 47                         json.Data = "";
 48                         json.Message = string.Format("系统不允许上传类型为{0}的文件，请重新选择上传！", ext);
 49                         // context.Response.Write(JsonMapper.ToJson(json));
 50                         return;
 51                     }
 52 
 53                     //2.判断文件大小，不能超过5MB
 54                     int fileSize = file.ContentLength;
 55                     const int MB = 1024 * 1024;
 56 
 57                     if (fileSize / MB >= 5)
 58                     {
 59                         json.Success = false;
 60                         json.Data = "";
 61                         json.Message = "上传的文件不能超过5MB，请重新选择上传！";
 62                         //context.Response.Write(JsonMapper.ToJson(json));
 63                         return;
 64                     }
 65 
 66                     string filePath = this.getLocalPath("1");
 67                     string uploadPath = context.Server.MapPath("~" + filePath) ;//导入文件路径
 68                     string fileName = "";
 69 
 70                     fileName = DateTime.Now.ToString("yyyyMMddHHmmssfff")+ ext;//文件名
 71                     if (!Directory.Exists(uploadPath))
 72                     {
 73                         Directory.CreateDirectory(uploadPath);
 74                     }                     
 75                       fullFileName = uploadPath +"\\"+ fileName;
 76                     file.SaveAs(fullFileName);//文件在服务器的全路径
 77                  
 78                     ftp.Upload(fullFileName); // 上传到FTP服务器
 79                     string  file_path =  ftp.ftpRemotePath.Substring(ftp.ftpRemotePath.IndexOf('/')) ;//保存在服务器的路径
 80                     string org_file_path = (file_path + "\\" + fileName).Replace("\\", "/");
 81                     org_file_name = org_file_name.Substring(org_file_name.LastIndexOf("\\") + 1);
 82                     string strMsg = "{\"file_path\":\""+org_file_path+"\",\"file_name\":\""+org_file_name+"\"}";
 83                     //string strMsg = string.Format("[{\"file_path\":\"{0}\"},{\"file_name\":\"{1}\"}]", , );
 84                     json.Data = strMsg;
 85                     
 86                 }
 87             }
 88             catch (Exception ex)
 89             {
 90                 json.Success = false;
 91                 json.Message = ex.Message;
 92                 json.Data = ex.Message + "###上传FTP路径：" + ftp.ftpURI;
 93             }
 94             finally
 95             {
 96                 string result = JsonMapper.ToJson(json);
 97                 //删除AP上的临时文件
 98                 if (File.Exists(fullFileName))
 99                 {
100                     File.Delete(fullFileName);
101                 }       
102                 context.Response.Write(result);
103                 context.Response.End();
104             }
105         }
106 
107         private string getLocalPath(string flag)
108         {
109             string path = string.Empty;
110 
111             string ftpPath = ConfigurationManager.AppSettings["FTP"];
112             string filePath = ConfigurationManager.AppSettings["uploadPath"];
113             string ImportPath = ConfigurationManager.AppSettings["ImportPath"];
114             string ExportPath = ConfigurationManager.AppSettings["ExportPath"];
115             if ("1".Equals(flag))
116             {
117                 path = ftpPath + filePath;
118             }
119             else if ("2".Equals(flag))
120             {
121                 path = ftpPath + ImportPath;
122             }
123             else if ("3".Equals(flag))
124             {
125                 path = ftpPath + ExportPath;
126             }
127             return path;
128         }
129         /// <summary>
130         /// 返回FTP对像
131         /// </summary>
132         /// <returns></returns>
133         private FTPHelper getFtpPath()
134         {
135             
136             string ftpPath = ConfigurationManager.AppSettings["FTPServer"];
137             string filePath = ConfigurationManager.AppSettings["FTPPath"];
138             string ftpUser = ConfigurationManager.AppSettings["FTPUser"];
139             string ftpPass = ConfigurationManager.AppSettings["FTPPass"];
140            
141             return new FTPHelper(ftpPath,filePath,ftpUser,ftpPass);
142         }
143 
144         /// <summary>
145         /// 获取文件扩展名
146         /// </summary>
147         /// <param name="fileName"></param>
148         /// <returns></returns>
149         private string getFileExtName(string fileName)
150         {
151             if (string.IsNullOrEmpty(fileName)) return string.Empty;
152             if (!fileName.Contains(".")) return fileName;
153             int posIndex = fileName.LastIndexOf('.');
154             return fileName.Substring(posIndex);
155         }
156         /// <summary>
157         /// 获取文件原始名
158         /// </summary>
159         /// <param name="fileName"></param>
160         /// <returns></returns>
161         private string getOrgFileName(string fileName)
162         {
163             if (string.IsNullOrEmpty(fileName)) return string.Empty;
164             if (!fileName.Contains("/")) 
165                 return fileName;
166             int posIndex = fileName.LastIndexOf('/')+1;
167             return fileName.Substring(posIndex);
168         }
169         public bool IsReusable
170         {
171             get
172             {
173                 return false;
174             }
175         }
176          
177     }
178 }

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