uploadify上传图片(限制最多五张)

项目中遇到图片上传的情况,好多都是使用服务器上传控件进行上传的,很是不爽.

然后在网上找到了uploadify的方法,自己总结和修改后分享给大家.

项目文档预览:

1.引用原有css和js

   <link href="../css/bootstrap.min.css" rel="stylesheet" />
     <link href="../css/bootstrap-responsive.min.css" rel="stylesheet" />
     <script src="../uploadify/jquery-1.4.1.min.js"></script>
     <link href="../uploadify/uploadify.css" rel="stylesheet" />

5     <script src="../uploadify/jquery.uploadify.min.js"></script>

2.HTML代码:

 <div class="img_setting">
             <div class="pic_demo">
             </div>
             <div class="upload_style">
                 <input type="file" name="upload_file" id="upload_file" />
             </div>

7         </div>

3.为HTML代码添加样式

 1  <style>
 2         .uploadify-queue {
 3             display: none;
 4         }
 5 
 6         .img_setting {
 7             margin:  auto;
 8             padding: 2px;
 9         }
 
         .pic_demo {
             margin:  auto;
             padding: 10px;
             float: left;
         }
 
         .upload_style {
             padding: 10px;
             margin: ;
         }
 
         .imgBox {
             display: inline;
             display: inline-block;
             padding: ;
             position: relative;
             margin:  10px 10px ;
             line-height: 120px;
             background-color: #c2c2c2;
         }
 
             .imgBox p {
                 height: auto;
                 display: none;
                 position: absolute;
                 left: ;
                 bottom: ;
             }
 
             .imgBox input {
                 line-height: 14px;
                 float: left;
                 font-size: 12px;
                 width: 20px;
             }
 
             .imgBox img {
                 width: 130px;
                 max-height: 130px;
                 vertical-align: middle;
             }
 
             .imgBox .editImg {
                 position: absolute;
                 left: ;
                 top: ;
                 width: 30px;
                 height: 30px;
                 line-height: 30px;
                 text-align: center;
                 display: none;
                 border: 1px solid #c2c2c2;
                 background-color: #fff;
                 font-size: 20px;
             }
 
             .imgBox .delImg {
                 position: absolute;
                 right: ;
                 top: ;
                 width: 30px;
                 height: 30px;
                 line-height: 30px;
                 text-align: center;
                 display: none;
                 border: 1px solid #c2c2c2;
                 background-color: #fff;
                 font-size: 20px;
             }

80     </style>

4.配置js:

 1 <script>
 2     $(function () {
 3         var file_count = ;
 4         var num = ;
 5         $("#upload_file").uploadify({
 6             'swf': '../uploadify/uploadify.swf',//指定swf文件
 7             'uploader': '../uploadify/uploadifyUpload.ashx',//调取后台处理方法
 8             'folder': '../UploadFiles/images',//图片保存路径
 9             'fileTypeExts': '*.gif; *.jpg; *.png',//文件上传类型后缀,不符合时有提醒
             'fileSizeLimit': "2MB",//上传文件大小限制数
             'auto': true,//选择后自动上传,默认值为true                
             'multi': false,//设置上传时是否可以选择多个,true可以,false禁止选中多个
             'method': 'post',//提交方式(get或者post),默认是post
             //'buttonText': '选择文件',
             'buttonImage': '../uploadify/image/add.png',
             'width': '128px',
             'height': '128px',
             'removeCompleted': true,
             'removeTimeout': ,
             'uploadLimit': ,//允许连续上传的次数,超过会提示
             'onUploadSuccess': function (file, data, respone) {
                 var arr = data.split('|');
                 var chgDisplay = $('.pic_demo');//div类名
                 picDispaly({
                     div: chgDisplay,
                     url: arr[]
                 });
                 function picDispaly(obj) {
                     var img = new Image();
                     img.src = "../UploadFiles/images/" + obj.url;
                     $(img).attr("data-url", obj.url);
 
                     var imgList = $('<div class="imgBox"><span class="editImg"><i class="icon icon-edit"></i></span><span class="delImg">×</span><p class="imgInfo"><input type="text" name="imgIndex" class="imgIndex" value="' + num + '" /></p></div>');
                     num += ;
                     file_count += ;
                     imgList.append(img);
                     $(obj.div).append(imgList);
 
                 }
                 chgDisplay.find('.imgBox').mouseenter(function (e) {
                     $(this).find('.delImg,.editImg').show();
                 }).mouseleave(function (e) {
                     $(this).find('.delImg,.editImg,.imgInfo').hide();
                 });
                 chgDisplay.find('.editImg').click(function (e) {
                     $(this).parent().find('.imgInfo').show();
                 });
                 chgDisplay.find('.delImg').click(function (e) {
                     $(this).parent().remove();
                     file_count -= ;
                     if (file_count <= ) {
                         $('#upload_file').show();
                     }
                 });
                 if (file_count > ) {
                     $('#upload_file').hide();
                 }
             },
             'onCancel': function (event, queueId, fileObj, data) {
 
             },
             'onUploadError': function (file, errorCode, errorMsg, errorString) {
 
             }
         });
     });

67 </script>

5.原有的jquery.uploadify.min.js中略微有些修改:

6.一般处理程序uploadifyUpload.ashx:

 1 public class uploadifyUpload : IHttpHandler {
 2 
 3     public void ProcessRequest(HttpContext context)
 4     {
 5         context.Response.ContentType = "text/plain";
 6         context.Response.Charset = "utf-8";
 7         HttpFileCollection file = HttpContext.Current.Request.Files;
 8         string result = "";
 9         string uploadPath = context.Server.MapPath("../UploadFiles/images"+"\\");
         if (file != null)
         {
             try
             {
 
                 if (!System.IO.Directory.Exists(uploadPath))
                 {
                     System.IO.Directory.CreateDirectory(uploadPath);
                 }
                 DateTime dtnow = System.DateTime.Now;
                 string filename = dtnow.Year.ToString() + dtnow.Month.ToString() + dtnow.Day.ToString() + dtnow.Hour.ToString() + dtnow.Minute.ToString() + dtnow.Second.ToString() + dtnow.Millisecond.ToString();
                 string ExtName = getFileExt(file[].FileName).ToUpper();
                 filename += "." + ExtName;
                 file[].SaveAs(uploadPath + filename);
                 result = "1|" + filename + "";
             }
             catch
             {
                 result = "0|";
             }
         }
         else
         {
             result = "0|";
         }
         context.Response.Write(result); //标志位1标识上传成功，后面的可以返回前台的参数，比如上传后的路径等，中间使用|隔开
     }
     private string getFileExt(string fileName)
     {
         if (fileName.IndexOf(".") == -)
             return "";
         string[] temp = fileName.Split('.');
         return temp[temp.Length - ].ToLower();
     }
  
     public bool IsReusable {
         get {
             return false;
         }
     }
 

51 }

6成果: