原来以为文件上传是一个比较简单的功能,结果搞了一个晚上才搞定~这里主要介绍两种方法实现。
方法一:Form表单提交
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<!DOCTYPE html> < html > < head > < meta charset = "utf-8" /> < title >上传文件</ title > < script src = "Scripts/jquery-1.11.3.min.js" ></ script > </ head > < body > < input id = "file_upload" name = "file_upload" type = "file" /> < input id = "btn_upload" type = "submit" value = "上传" /> </ form > </ body > </ html > |
UploadHandler.ashx代码:
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using System; using System.Collections.Generic; using System.Linq; using System.Web; namespace WebApplication1 { /// <summary> /// UploadHandler 的摘要说明 /// </summary> public class UploadHandler : IHttpHandler { public void ProcessRequest(HttpContext context) { context.Response.ContentType = "text/plain" ; HttpPostedFile file = context.Request.Files[ "file_upload" ]; string filePath = context.Server.MapPath( "~/UploadFiles/" ) + System.IO.Path.GetFileName(file.FileName); file.SaveAs(filePath); context.Response.Write( "上传文件成功" ); } public bool IsReusable { get { return false ; } } } } |
该方法虽然能够实现文件的上传,但是form表单提交之后整个页面就刷新了,如果要无刷新上传文件的话,就要使用ajax了。
方法二:jquery + ajax无刷上传
html代码:
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<!DOCTYPE html> < html > < head > < meta charset = "utf-8" /> < title >上传文件</ title > < script src = "Scripts/jquery-1.11.3.min.js" ></ script > </ head > < body > < input id = "file_upload" name = "file_upload" type = "file" /> < input id = "btn_upload" type = "button" value = "上传" /> < script > $(document).ready(function () { $('#btn_upload').bind('click', function () { var formData = new FormData(); formData.append('upload_file', $('#file_upload')[0].files[0]); $.ajax({ url: 'UploadHandler.ashx', type: 'post', data: formData, contentType: false, processData: false, success: function (msg) { if (msg == "Yes") { alert('文件上传成功'); } else { alert('文件上传失败'); } } }) }); }); </ script > </ body > </ html > |
UploadHandler.ashx代码:
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using System; using System.Collections.Generic; using System.Linq; using System.Web; namespace WebApplication1 { /// <summary> /// UploadHandler 的摘要说明 /// </summary> public class UploadHandler : IHttpHandler { public void ProcessRequest(HttpContext context) { context.Response.ContentType = "text/plain" ; if (context.Request.Files.Count > 0) { HttpPostedFile file = context.Request.Files[ "upload_file" ]; string filePath = context.Server.MapPath( "~/UploadFiles/" ) + System.IO.Path.GetFileName(file.FileName); file.SaveAs(filePath); context.Response.Write( "Yes" ); } else { context.Response.Write( "No" ); } } public bool IsReusable { get { return false ; } } } } |
个人更推荐方法二,运行结果如下图所示:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/HerryDong/article/details/100549765