jquery批量上传图片


在网上一直找不到jquery上传图片的例子,今天由于工作需要,在网上找了很长时间,找到了一个不太完整的例子,自已又对其进行了修改,现在已经可以使用,但只限于IE,火狐下不能使用,因为火狐下得不到本地上传的图片路径,希望能对新手有所帮助.

前台: upload.htm

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>upload</title>
    <link href="upload.css" rel="Stylesheet" />
</head>
<body>
    <form>
    <ul>
        <li>
            <button id="SubUpload" onclick="TSubmitUploadImageFile();return false;">
                确定上传</button>&nbsp;&nbsp;
            <button id="CancelUpload" class="ManagerButton" onclick="javascript:history.go(-1);">
                取消</button>&nbsp;&nbsp;
            <button id="AddUpload" class="ManagerButton" onclick="TAddFileUpload();return false;">
                增加</button>
        </li>
    </ul>
    <ul id="loadimage">
        <li>
            <div class="imagelabel">
                图片1:</div>
            <div class="imagepath">
                <input name="" size="45" id="uploadImg1" type="file" /></div>
            <div class="loadinfo">
                <span id="uploadImgState1"></span>
            </div>
        </li>
    </ul>
    </form>
</body>
</html>

<script type="text/javascript" src="http://www.cnblogs.com/JS/jquery-1.3.2-vsdoc.js"></script>

<script type="text/javascript">
    var TfileUploadNum = 1; //记录图片选择框个数
    var Tnum = 1; //ajax上传图片时索引
    //增加上传按钮
    function TAddFileUpload() {
        var idnum = TfileUploadNum + 1;
        var str = "<li>";
        str += "<div class='imagelabel'>图片" + idnum + ":</div>";
        str += "<div class='imagepath'><input name='' size='45' id='uploadImg" + idnum + "' type='file' /></div>";
        str += "<div class='loadinfo'><span id='uploadImgState" + idnum + "'></span></div>";
        str += "</li>";
        $("#loadimage").append(str);
        TfileUploadNum += 1;
    }
    //开始上传
    function TSubmitUploadImageFile() {
        document.getElementById("SubUpload").disabled = true;
        document.getElementById("CancelUpload").disabled = true;
        document.getElementById("AddUpload").disabled = true;
        setTimeout("TajaxFileUpload()", 1000); //此为关键代码
    }
    //Ajax上传方法
    function TajaxFileUpload() {
        if (Tnum < TfileUploadNum + 1) {
            //准备提交处理
            $("#uploadImgState" + Tnum).html("<img src='/gif/upfileloader.gif'/>");
            //开始提交
            $.ajax({
                type: "POST",
                url: "Handler.ashx",
                data: { upfile: $("#uploadImg" + Tnum).val()},
                success: function(data, status) {
                    var stringArray = data.split("|");
                    //stringArray[0]    成功状态(1为成功,0为失败)
                    //stringArray[1]    上传成功的文件名
                    //stringArray[2]    消息提示
                    if (stringArray[0] == "1") {
                        //上传成功
                        $("#uploadImgState" + Tnum).html("<img src='/gif/Success.gif' />" + stringArray[1] + "--" + stringArray[2]);
                    }
                    else {
                        //上传出错
                        $("#uploadImgState" + Tnum).html("<img src='/gif/Error.gif' />" + stringArray[1] + "--" + stringArray[2]);
                    }
                    Tnum++;
                    setTimeout("TajaxFileUpload()", 1000);
                }
            });
        }
        else {
            document.getElementById("SubUpload").disabled = false;
            document.getElementById("CancelUpload").disabled = false;
            document.getElementById("AddUpload").disabled = false;
        }
    }        
</script>
处理程序Handler.ashx
<%@ WebHandler Language="C#" Class="Handler" %>
using System;
using System.Web;
using System.IO;
using System.Text;
using System.Net;

public class Handler : IHttpHandler
{

    public void ProcessRequest(HttpContext context)
    {
        //源图片路径
        string _fileNamePath = "";
        try
        {
            _fileNamePath = context.Request.Form["upfile"];

            string _savedFileResult = UpLoadFile(_fileNamePath); //开始上传
            context.Response.Write(_savedFileResult);//返回上传结果
        }
        catch
        {
            context.Response.Write("0|error|文件路径错误");
        }
    }
    /// <summary>
    /// 保存图片
    /// </summary>
    /// <param name="fileNamePath"></param>
    /// <returns></returns>
    private string UpLoadFile(string fileNamePath)
    {
        //图片格式
        string fileNameExt = fileNamePath.Substring(fileNamePath.IndexOf('.')).ToLower();
        if (!CheckFileExt(fileNameExt)) return "0|error|图片格式不正确!";
               
        //保存路径
        string toFilePath = "ProductUpload/";
        //物理完整路径
        string toFileFullPath = HttpContext.Current.Server.MapPath(toFilePath);
        //检查是否有该路径 没有就创建
        if (!Directory.Exists(toFileFullPath))
        {
            Directory.CreateDirectory(toFileFullPath);
        }        
      
        //生成将要保存的随机文件名
        string toFileName = GetFileName();
       
        //将要保存的完整路径
        string saveFile=toFileFullPath +toFileName + fileNameExt;
        
        ///创建WebClient实例
        WebClient myWebClient = new WebClient();
        //设定windows网络安全认证
        myWebClient.Credentials = CredentialCache.DefaultCredentials;
        //要上传的文件
        FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read);            
        BinaryReader r = new BinaryReader(fs);             
        //使用UploadFile方法可以用下面的格式
        myWebClient.UploadFile(saveFile,fileNamePath);

        return "1|"+toFileName+fileNameExt+"|保存成功.";
    }
    /// <summary>
    /// 检测图片类型
    /// </summary>
    /// <param name="_fileExt"></param>
    /// <returns>正确返回True</returns>
    private bool CheckFileExt(string _fileExt)
    {
        string[] allowExt = new string[] { ".gif", ".jpg", ".jpeg" };
        for (int i = 0; i < allowExt.Length; i++)
        {
            if (allowExt[i] == _fileExt) { return true; }
        }
        return false;
    }
    /// <summary>
    /// 得到随机图片名
    /// </summary>
    /// <returns></returns>
    public static string GetFileName()
    {
        Random rd = new Random();
        StringBuilder serial = new StringBuilder();
        serial.Append(DateTime.Now.ToString("yyMMddHHmmssff"));
        serial.Append(rd.Next(0, 9999).ToString());
        return serial.ToString();
    }
    public bool IsReusable
    {
        get
        {
            return false;
        }
    }

}

CSS样式 upload.css

body{font-size: 12pt;}
ul{list-style: none;}
li{margin: 0px;}
#loadimage{width: 860px;overflow: hidden;}
.imagelabel{ float: left; width: 60px; height: 25px;}
.imagepath{float: left; width: 400px; height: 25px; }
.loadinfo{float: left; width: 400px;height: 25px;} 

posted @ 2010-01-28 16:08  郭武涛  阅读(12994)  评论(14编辑  收藏  举报