WebUploader.js 上传的几种情况

最近的项目中用到webUploader的地方比较多，总结了几种图片上传的情况。

必要的引用

<link href="~/Scripts/webuploader-0.1.5/webuploader.css" rel="stylesheet" />
 <script src="~/Scripts/webuploader-0.1.5/webuploader.min.js"></script>

　　第一，只上传缩略图

页面html

<td>
                @if (Model==null||string.IsNullOrEmpty(Model.Cover))
                {
                    <img src="~/Images/blankimg.jpg" width="120" height="120" id="img" />
                }
                else
                {
                    <img src="~/Upload/College/@Model.Cover" width="120" height="120" id="img" />
                }
                @Html.HiddenFor(m=>m.Cover)
                <div id="uploader" class="wu-example" style="margin-top:10px">
                    <!--用来存放文件信息-->
                    <div class="btns">
                        <div id="picker">选择图片</div>
                    </div>
                </div>
            </td>

　　js代码

var ratio = window.devicePixelRatio || 1,
  // 缩略图大小
  thumbnailWidth = 240 * ratio,
  thumbnailHeight = 240 * ratio;
        var uploader = WebUploader.create({
            swf: '/Scripts/webuploader-0.1.5/js/Uploader.swf',
            pick: '#picker',
            resize: false,
            accept: {
                title: 'Images',
                extensions: 'gif,jpg,jpeg,bmp,png',
                mimeTypes: 'image/jpg,image/jpeg,image/png'
            },
            thumb: {
                 120,
                height: 120,
                quality: 70,
                allowMagnify: true,
                crop: true,
                type: 'image/jpeg'
            },
            method: "POST"
        });
        uploader.on("fileQueued", function (file) {
            uploader.makeThumb(file, function (error, ret) {
                if (error) {
                    alert('预览错误')
                } else {
                    $("#img").attr("src", ret)
                    $("#Cover").val(ret)
                    uploader.reset();
                }
            }, thumbnailWidth, thumbnailHeight);
        })

　　服务端action 在保存方法中直接保存路径

public JsonResult College_Save(XX0301Model.Base model)
        {
            if (!string.IsNullOrWhiteSpace(model.Cover))
            {
                var array = model.Cover.Split(',');
                if (array.Length > 1)
                {
                    var image = array[1];

                    var arr = Convert.FromBase64String(image);
                    MemoryStream ms = new MemoryStream(arr);
                    Bitmap bmp = new Bitmap(ms);

                    var path = Server.MapPath("/Upload/College/");


                    if (!System.IO.Directory.Exists(path))
                        System.IO.Directory.CreateDirectory(path);
                    var fileName = Guid.NewGuid() + ".jpg";
                    bmp.Save(path + fileName, System.Drawing.Imaging.ImageFormat.Jpeg);
                    ms.Close();
                    model.Cover = fileName;
                }
            }
            return IData.XX0301.Save(model).ToJson();
        }

　　第二，上传缩略图和原图

界面html代码

<td>
                        @if (Model == null)
                        {
                            <img src="~/Images/blankimg.jpg" width="120" height="120" id="img" />

                        }
                        else
                        {
                            <img src="~/Upload/Campus/@Model.ThumbUrl" width="120" height="120" id="img" />
                        }
                        @Html.HiddenFor(m => m.ID)
                        @Html.HiddenFor(m=>m.ImgUrl)
                        @Html.HiddenFor(m=>m.ThumbUrl)
                        <div id="uploader" class="wu-example" style="margin-top:10px">
                            <!--用来存放文件信息-->
                            <div class="btns">
                                <div id="picker">选择图片</div>
                            </div>
                        </div>
                    </td>

js代码

var ratio = window.devicePixelRatio || 1,
     // 缩略图大小
     thumbnailWidth = 250 * ratio,
     thumbnailHeight = 250 * ratio;
        var uploader = WebUploader.create({
            swf: '/Scripts/webuploader-0.1.5/js/Uploader.swf',
            server: '@Url.Action("CampusUpload")',
            pick: '#picker',
            resize: false,
            auto: true,
            fileSingleSizeLimit: 2 * 1024 * 1024, //1M
            accept: {
                title: 'Images',
                extensions: 'gif,jpg,jpeg,bmp,png',
                mimeTypes: 'image/jpg,image/jpeg,image/png'
            },
            thumb: {
                 250,
                height: 250,
                quality: 70,
                allowMagnify: true,
                crop: true,
                type: 'image/jpeg'
            },
            method: "POST"
        });
        uploader.on("uploadStart", function (file) {
            Art.waitPanel.showWait("正在上传文件", 99999);
        })
        uploader.on("error", function (type) {
            Art.waitPanel.closeWait()
            if (type == "Q_TYPE_DENIED") {
                top.$.messager.alert("系统提示", "请上传JPG、PNG格式文件", "error");
            } else if (type == "F_EXCEED_SIZE") {
                top.$.messager.alert("系统提示", "文件大小不能超过1M", "error");
            }
        });
        uploader.on("uploadSuccess", function (file, response) {
            Art.waitPanel.closeWait()
            var data = response
            if (data.flag) {
                uploader.makeThumb(file, function (error, ret) {
                    if (error) {
                        top.$.messager.alert("系统提示", "预览错误","error")
                    } else {
                        Art.waitPanel.showWait("正在生成缩略图", 99999);
                        $.post("@Url.Action("Campus_MakeThumb")", { image: ret }, function (result) {
                            if (result.flag) {
                                $("#img").attr("src", ret)
                                $("#ImgUrl").val(data.data)
                                $("#ThumbUrl").val(result.data)
                                uploader.reset();
                            } else {
                                top.$.messager.alert("系统提示", result.msg, "error")
                            }
                            Art.waitPanel.closeWait()
                        })

                    }
                }, thumbnailWidth, thumbnailHeight);
            } else {
                top.$.messager.alert("系统提示", data.msg, "error")
            }
        })

服务端保存原图，缩略图的代码

public JsonResult CampusUpload()
        {
            var file = Request.Files[0];
            if (file == null)
                return ResultEx.Init(false, "读取图片失败！").ToJson();

            var fileName = file.FileName;
            var fix = fileName.Substring(fileName.LastIndexOf('.') + 1);
            var fixList = new string[] { "jpg", "jpeg", "png", "gif" };
            if (!fixList.Contains(fix))
                return ResultEx.Init(false, "上传的图片格式不正确！").ToJson();
            var maxSize = 1024 * 1024 * 2; //2M
            if (file.ContentLength >= maxSize)
                return ResultEx.Init(false, "上传的图片大小不得大于2M！").ToJson();

            var nFileName = Guid.NewGuid() + "." + fix;
            var path = Server.MapPath("/Upload/Campus/");
            if (!System.IO.Directory.Exists(path))
                System.IO.Directory.CreateDirectory(path);
            file.SaveAs(path + nFileName);
            return ResultEx.Init(true, "", nFileName).ToJson();
        }

        public JsonResult Campus_MakeThumb(string image)
        {
            try
            {
                image = image.Split(',')[1];

                var arr = Convert.FromBase64String(image);
                MemoryStream ms = new MemoryStream(arr);
                Bitmap bmp = new Bitmap(ms);

                var path = Server.MapPath("/Upload/Campus/");


                if (!System.IO.Directory.Exists(path))
                    System.IO.Directory.CreateDirectory(path);
                var fileName = Guid.NewGuid() + ".jpg";
                bmp.Save(path + fileName, System.Drawing.Imaging.ImageFormat.Jpeg);
                ms.Close();
                return ResultEx.Init(true, "", fileName).ToJson();
            }
            catch (Exception ex)
            {
                return ResultEx.Init(ex).ToJson();
            }
        }

    第三，上传url带参数，并且在上传之前做数据校验

html页面

<td colspan="2" rowspan="6" align="center">

                    @{
                        var path = "/Upload/STUDENT/";
                        var fileName = (Model != null && !string.IsNullOrWhiteSpace(Model.KSH) ? Model.KSH : "nonePhoto");
                        path = path + fileName + ".jpg";
                    }
                    <img width="200" height="250" src="@path" id="img_ZP" />
                    <div id="uploader" class="wu-example" style="margin-top:10px">
                        <!--用来存放文件信息-->
                        <div class="btns">
                            <div id="picker">选择图片</div>
                        </div>
                    </div>
                </td>

js代码

var uploader = WebUploader.create({
            swf: '/Scripts/webuploader-0.1.5/js/Uploader.swf',
            server: '/MCenter/Student/Student_PicUpload',
            pick: '#picker',
            resize: false,
            auto: true,
            fileSingleSizeLimit: 1 * 1024 * 1024, //1M
            accept: {
                title: 'Images',
                extensions: 'gif,jpg,jpeg,bmp,png',
                mimeTypes: 'image/jpg,image/jpeg,image/png'
            },
            method: "POST"
        });
        
        uploader.on("uploadStart", function (file) {
            Art.waitPanel.showWait("正在上传文件", 99999);
        })
        uploader.on('beforeFileQueued', function (file) {
            var KSH = $("#KSH").textbox('getValue');
            if (!KSH || KSH == null || KSH == "") {
                top.$.messager.alert("系统提示", "请填写考生号后再上传图片！")
                return false;
            }
            uploader.options.formData = { KSH: KSH };
        });
        uploader.on("error", function (type) {
            Art.waitPanel.closeWait()
            if (type == "Q_TYPE_DENIED") {
                top.$.messager.alert("系统提示", "请上传JPG、PNG格式文件", "error");
            } else if (type == "F_EXCEED_SIZE") {
                top.$.messager.alert("系统提示", "文件大小不能超过1M", "error");
            }
        });
        uploader.on("uploadSuccess", function (file, response) {
            Art.waitPanel.closeWait()
            var data = response
            if (data.flag) {
                $("#img_ZP").attr("src", "/Upload/Student/" + data.data)
                uploader.reset();
            } else {
                top.$.messager.alert("系统提示", data.msg, "error")
            }
        })

服务端代码上传原图

public JsonResult Student_PicUpload(string KSH)
        {
            var file = Request.Files[0];
            if (file == null)
                return ResultEx.Init(false, "读取图片失败！").ToJson();

            var fileName = file.FileName;
            var fix = fileName.Substring(fileName.LastIndexOf('.') + 1);
            var fixList = new string[] { "jpg", "jpeg", "png", "gif" };
            if (!fixList.Contains(fix))
                return ResultEx.Init(false, "上传的图片格式不正确！").ToJson();
            var maxSize = 1024 * 1024 * 1; //1M
            if (file.ContentLength >= maxSize)
                return ResultEx.Init(false, "上传的图片大小不得大于1M！").ToJson();

            var path = Server.MapPath("/Upload/Student/");
            if (!System.IO.Directory.Exists(path))
                System.IO.Directory.CreateDirectory(path);
            file.SaveAs(path + KSH + ".jpg");

            return ResultEx.Init(true, "",  KSH + ".jpg").ToJson();
        }

    第四，根据官网上的demo的多图队列上传

引用

<script src="~/lib/jquery/1.9.1/jquery.min.js"></script>
<link href="~/lib/webuploader/0.1.5/webuploader.css" rel="stylesheet" />
<link href="~/lib/webuploader/0.1.5/demo.css" rel="stylesheet" />
<script type="text/javascript" src="/lib/webuploader/0.1.5/webuploader.min.js"></script>

官方的demo需要引用对应的demo.css

#container {
    color: #838383;
    font-size: 12px;
}

#uploader .queueList {
    margin: 20px;
    border: 3px dashed #e6e6e6;
}
#uploader .queueList.filled {
    padding: 17px;
    margin: 0;
    border: 3px dashed transparent;
}
#uploader .queueList.webuploader-dnd-over {
    border: 3px dashed #999999;
}

#uploader p {margin: 0;}

.element-invisible {
    position: absolute !important;
    clip: rect(1px 1px 1px 1px); /* IE6, IE7 */
    clip: rect(1px,1px,1px,1px);
}

#uploader .placeholder {
    min-height: 350px;
    padding-top: 178px;
    text-align: center;
    background: url(images/image.png) center 93px no-repeat;
    color: #cccccc;
    font-size: 18px;
    position: relative;
}

#uploader .placeholder .webuploader-pick {
    font-size: 18px;
    background: #00b7ee;
    border-radius: 3px;
    line-height: 44px;
    padding: 0 30px;
    * 120px;
    color: #fff;
    display: inline-block;
    margin: 0 auto 20px auto;
    cursor: pointer;
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}

#uploader .placeholder .webuploader-pick-hover {
    background: #00a2d4;
}

#uploader .placeholder .flashTip {
    color: #666666;
    font-size: 12px;
    position: absolute;
     100%;
    text-align: center;
    bottom: 20px;
}
#uploader .placeholder .flashTip a {
    color: #0785d1;
    text-decoration: none;
}
#uploader .placeholder .flashTip a:hover {
    text-decoration: underline;
}

#uploader .filelist {
    list-style: none;
    margin: 0;
    padding: 0;
}

#uploader .filelist:after {
    content: '';
    display: block;
     0;
    height: 0;
    overflow: hidden;
    clear: both;
}

#uploader .filelist li {
     110px;
    height: 110px;
    background: url(images/bg.png) no-repeat;
    text-align: center;
    margin: 0 8px 20px 0;
    position: relative;
    display: inline;
    float: left;
    overflow: hidden;
    font-size: 12px;
}

#uploader .filelist li p.log {
    position: relative;
    top: -45px;
}

#uploader .filelist li p.title {
    position: absolute;
    top: 0;
    left: 0;
     100%;
    overflow: hidden;
    white-space: nowrap;
    text-overflow : ellipsis;
    top: 5px;
    text-indent: 5px;
    text-align: left;
}

#uploader .filelist li p.progress {
    position: absolute;
     100%;
    bottom: 0;
    left: 0;
    height: 8px;
    overflow: hidden;
    z-index: 50;
    margin: 0;
    border-radius: 0;
    background: none;
    -webkit-box-shadow: 0 0 0;
}
#uploader .filelist li p.progress span {
    display: none;
    overflow: hidden;
     0;
    height: 100%;
    background: #1483d8 url(images/progress.png) repeat-x;

    -webit-transition: width 200ms linear;
    -moz-transition: width 200ms linear;
    -o-transition: width 200ms linear;
    -ms-transition: width 200ms linear;
    transition: width 200ms linear;

    -webkit-animation: progressmove 2s linear infinite;
    -moz-animation: progressmove 2s linear infinite;
    -o-animation: progressmove 2s linear infinite;
    -ms-animation: progressmove 2s linear infinite;
    animation: progressmove 2s linear infinite;

    -webkit-transform: translateZ(0);
}

@-webkit-keyframes progressmove {
    0% {
       background-position: 0 0;
    }
    100% {
       background-position: 17px 0;
    }
}
@-moz-keyframes progressmove {
    0% {
       background-position: 0 0;
    }
    100% {
       background-position: 17px 0;
    }
}
@keyframes progressmove {
    0% {
       background-position: 0 0;
    }
    100% {
       background-position: 17px 0;
    }
}

#uploader .filelist li p.imgWrap {
    position: relative;
    z-index: 2;
    line-height: 110px;
    vertical-align: middle;
    overflow: hidden;
     110px;
    height: 110px;

    -webkit-transform-origin: 50% 50%;
    -moz-transform-origin: 50% 50%;
    -o-transform-origin: 50% 50%;
    -ms-transform-origin: 50% 50%;
    transform-origin: 50% 50%;

    -webit-transition: 200ms ease-out;
    -moz-transition: 200ms ease-out;
    -o-transition: 200ms ease-out;
    -ms-transition: 200ms ease-out;
    transition: 200ms ease-out;
}

#uploader .filelist li img {
     100%;
}

#uploader .filelist li p.error {
    background: #f43838;
    color: #fff;
    position: absolute;
    bottom: 0;
    left: 0;
    height: 28px;
    line-height: 28px;
     100%;
    z-index: 100;
}

#uploader .filelist li .success {
    display: block;
    position: absolute;
    left: 0;
    bottom: 0;
    height: 40px;
     100%;
    z-index: 200;
    background: url(images/success.png) no-repeat right bottom;
}

#uploader .filelist div.file-panel {
    position: absolute;
    height: 0;
    filter: progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr='#80000000', endColorstr='#80000000')0;
    background: rgba( 0, 0, 0, 0.5 );
     100%;
    top: 0;
    left: 0;
    overflow: hidden;
    z-index: 300;
}

#uploader .filelist div.file-panel span {
     24px;
    height: 24px;
    display: inline;
    float: right;
    text-indent: -9999px;
    overflow: hidden;
    background: url(images/icons.png) no-repeat;
    margin: 5px 1px 1px;
    cursor: pointer;
}

#uploader .filelist div.file-panel span.rotateLeft {
    background-position: 0 -24px;
}
#uploader .filelist div.file-panel span.rotateLeft:hover {
    background-position: 0 0;
}

#uploader .filelist div.file-panel span.rotateRight {
    background-position: -24px -24px;
}
#uploader .filelist div.file-panel span.rotateRight:hover {
    background-position: -24px 0;
}

#uploader .filelist div.file-panel span.cancel {
    background-position: -48px -24px;
}
#uploader .filelist div.file-panel span.cancel:hover {
    background-position: -48px 0;
}

#uploader .statusBar {
    height: 63px;
    border-top: 1px solid #dadada;
    padding: 0 20px;
    line-height: 63px;
    vertical-align: middle;
    position: relative;
}

#uploader .statusBar .progress {
    border: 1px solid #1483d8;
     198px;
    background: #fff;
    height: 18px;
    position: relative;
    display: inline-block;
    text-align: center;
    line-height: 20px;
    color: #6dbfff;
    position: relative;
    margin: 0 10px 0 0;
}
#uploader .statusBar .progress span.percentage {
     0;
    height: 100%;
    left: 0;
    top: 0;
    background: #1483d8;
    position: absolute;
}
#uploader .statusBar .progress span.text {
    position: relative;
    z-index: 10;
}

#uploader .statusBar .info {
    display: inline-block;
    font-size: 14px;
    color: #666666;
}

#uploader .statusBar .btns {
    position: absolute;
    top: 10px;
    right: 20px;
    line-height: 40px;
}

#filePicker2 {
    display: inline-block;
    float: left;
}

#uploader .statusBar .btns .webuploader-pick,
#uploader .statusBar .btns .uploadBtn,
#uploader .statusBar .btns .uploadBtn.state-uploading,
#uploader .statusBar .btns .uploadBtn.state-paused {
    background: #ffffff;
    border: 1px solid #cfcfcf;
    color: #565656;
    padding: 0 18px;
    display: inline-block;
    border-radius: 3px;
    margin-left: 10px;
    cursor: pointer;
    font-size: 14px;
    float: left;
}
#uploader .statusBar .btns .webuploader-pick-hover,
#uploader .statusBar .btns .uploadBtn:hover,
#uploader .statusBar .btns .uploadBtn.state-uploading:hover,
#uploader .statusBar .btns .uploadBtn.state-paused:hover {
    background: #f0f0f0;
}

#uploader .statusBar .btns .uploadBtn {
    background: #00b7ee;
    color: #fff;
    border-color: transparent;
}
#uploader .statusBar .btns .uploadBtn:hover {
    background: #00a2d4;
}

#uploader .statusBar .btns .uploadBtn.disabled {
    pointer-events: none;
    opacity: 0.6;
}

界面html

<div id="uploader" class="wu-example">
                    <div class="queueList">
                        <div id="dndArea" class="placeholder">
                            <div id="filePicker" class="webuploader-container"><div class="webuploader-pick">点击选择图片</div><div id="rt_rt_1binnblu91uid10p812ar8849nh1" style="position: absolute; top: 0px; left: 134.5px;  168px; height: 44px; overflow: hidden; bottom: auto; right: auto;"><input type="file" name="file" class="webuploader-element-invisible" multiple="multiple" accept="image/*"><label style="opacity: 0;  100%; height: 100%; display: block; cursor: pointer; background: rgb(255, 255, 255);"></label></div></div>
                            <p>或将照片拖到这里，单次最多可选300张</p>
                        </div>
                        <ul class="filelist"></ul>
                    </div>
                    <div class="statusBar" style="display:none;">
                        <div class="progress" style="display: none;">
                            <span class="text">0%</span>
                            <span class="percentage" style=" 0%;"></span>
                        </div><div class="info">共0张（0B），已上传0张</div>
                        <div class="btns">
                            <div id="filePicker2" class="webuploader-container"><div class="webuploader-pick">继续添加</div><div id="rt_rt_1binnbluc18pevlkb9b101q1hvq6" style="position: absolute; top: 0px; left: 0px;  1px; height: 1px; overflow: hidden;"><input type="file" name="file" class="webuploader-element-invisible" multiple="multiple" accept="image/*"><label style="opacity: 0;  100%; height: 100%; display: block; cursor: pointer; background: rgb(255, 255, 255);"></label></div></div><div class="uploadBtn state-pedding">开始上传</div>
                        </div>
                    </div>
                </div>

js代码

<script type="text/javascript">
    jQuery(function () {
        var $ = jQuery,    // just in case. Make sure it's not an other libaray.

            $wrap = $('#uploader'),

            // 图片容器
            $queue = $('<ul class="filelist"></ul>')
                .appendTo($wrap.find('.queueList')),

            // 状态栏，包括进度和控制按钮
            $statusBar = $wrap.find('.statusBar'),

            // 文件总体选择信息。
            $info = $statusBar.find('.info'),

            // 上传按钮
            $upload = $wrap.find('.uploadBtn'),

            // 没选择文件之前的内容。
            $placeHolder = $wrap.find('.placeholder'),

            // 总体进度条
            $progress = $statusBar.find('.progress').hide(),

            // 添加的文件数量
            fileCount = 0,

            // 添加的文件总大小
            fileSize = 0,

            // 优化retina, 在retina下这个值是2
            ratio = window.devicePixelRatio || 1,

            // 缩略图大小
            thumbnailWidth = 110 * ratio,
            thumbnailHeight = 110 * ratio,

            // 可能有pedding, ready, uploading, confirm, done.
            state = 'pedding',

            // 所有文件的进度信息，key为file id
            percentages = {},

            supportTransition = (function () {
                var s = document.createElement('p').style,
                    r = 'transition' in s ||
                          'WebkitTransition' in s ||
                          'MozTransition' in s ||
                          'msTransition' in s ||
                          'OTransition' in s;
                s = null;
                return r;
            })(),

            // WebUploader实例
            uploader;

        if (!WebUploader.Uploader.support()) {
            alert('Web Uploader 不支持您的浏览器！如果你使用的是IE浏览器，请尝试升级 flash 播放器');
            throw new Error('WebUploader does not support the browser you are using.');
        }

        // 实例化
        uploader = WebUploader.create({
            pick: {
                id: '#filePicker',
                label: '点击选择图片'
            },
            dnd: '#uploader .queueList',
            paste: document.body,

            accept: {
                title: 'Images',
                extensions: 'gif,jpg,jpeg,bmp,png',
                mimeTypes: 'image/*'
            },

            // swf文件路径
            swf:  '/lib/webuploader/0.1.5/Uploader.swf',

            disableGlobalDnd: true,

            chunked: true,
            // server: 'http://webuploader.duapp.com/server/fileupload.php',
            server: '/House/Pics_Upload',
            formData:{houseId:@Model},
            fileNumLimit: 300,
            fileSizeLimit: 5 * 1024 * 1024,    // 200 M
            fileSingleSizeLimit: 1 * 1024 * 1024    // 50 M
        });

        // 添加“添加文件”的按钮，
        uploader.addButton({
            id: '#filePicker2',
            label: '继续添加'
        });

        // 当有文件添加进来时执行，负责view的创建
        function addFile(file) {
            var $li = $('<li id="' + file.id + '">' +
                    '<p class="title">' + file.name + '</p>' +
                    '<p class="imgWrap"></p>' +
                    '<p class="progress"><span></span></p>' +
                    '</li>'),

                $btns = $('<div class="file-panel">' +
                    '<span class="cancel">删除</span>' +
                    '<span class="rotateRight">向右旋转</span>' +
                    '<span class="rotateLeft">向左旋转</span></div>').appendTo($li),
                $prgress = $li.find('p.progress span'),
                $wrap = $li.find('p.imgWrap'),
                $info = $('<p class="error"></p>'),

                showError = function (code) {
                    switch (code) {
                        case 'exceed_size':
                            text = '文件大小超出';
                            break;

                        case 'interrupt':
                            text = '上传暂停';
                            break;

                        default:
                            text = '上传失败，请重试';
                            break;
                    }

                    $info.text(text).appendTo($li);
                };

            if (file.getStatus() === 'invalid') {
                showError(file.statusText);
            } else {
                // todo lazyload
                $wrap.text('预览中');
                uploader.makeThumb(file, function (error, src) {
                    if (error) {
                        $wrap.text('不能预览');
                        return;
                    }

                    var img = $('<img src="' + src + '">');
                    $wrap.empty().append(img);
                }, thumbnailWidth, thumbnailHeight);

                percentages[file.id] = [file.size, 0];
                file.rotation = 0;
            }

            file.on('statuschange', function (cur, prev) {
                if (prev === 'progress') {
                    $prgress.hide().width(0);
                } else if (prev === 'queued') {
                    $li.off('mouseenter mouseleave');
                    $btns.remove();
                }

                // 成功
                if (cur === 'error' || cur === 'invalid') {
                    console.log(file.statusText);
                    showError(file.statusText);
                    percentages[file.id][1] = 1;
                } else if (cur === 'interrupt') {
                    showError('interrupt');
                } else if (cur === 'queued') {
                    percentages[file.id][1] = 0;
                } else if (cur === 'progress') {
                    $info.remove();
                    $prgress.css('display', 'block');
                } else if (cur === 'complete') {
                    $li.append('<span class="success"></span>');
                }

                $li.removeClass('state-' + prev).addClass('state-' + cur);
            });

            $li.on('mouseenter', function () {
                $btns.stop().animate({ height: 30 });
            });

            $li.on('mouseleave', function () {
                $btns.stop().animate({ height: 0 });
            });

            $btns.on('click', 'span', function () {
                var index = $(this).index(),
                    deg;

                switch (index) {
                    case 0:
                        uploader.removeFile(file);
                        return;

                    case 1:
                        file.rotation += 90;
                        break;

                    case 2:
                        file.rotation -= 90;
                        break;
                }

                if (supportTransition) {
                    deg = 'rotate(' + file.rotation + 'deg)';
                    $wrap.css({
                        '-webkit-transform': deg,
                        '-mos-transform': deg,
                        '-o-transform': deg,
                        'transform': deg
                    });
                } else {
                    $wrap.css('filter', 'progid:DXImageTransform.Microsoft.BasicImage(rotation=' + (~~((file.rotation / 90) % 4 + 4) % 4) + ')');
                    // use jquery animate to rotation
                    // $({
                    //     rotation: rotation
                    // }).animate({
                    //     rotation: file.rotation
                    // }, {
                    //     easing: 'linear',
                    //     step: function( now ) {
                    //         now = now * Math.PI / 180;

                    //         var cos = Math.cos( now ),
                    //             sin = Math.sin( now );

                    //         $wrap.css( 'filter', "progid:DXImageTransform.Microsoft.Matrix(M11=" + cos + ",M12=" + (-sin) + ",M21=" + sin + ",M22=" + cos + ",SizingMethod='auto expand')");
                    //     }
                    // });
                }


            });

            $li.appendTo($queue);
        }

        // 负责view的销毁
        function removeFile(file) {
            var $li = $('#' + file.id);

            delete percentages[file.id];
            updateTotalProgress();
            $li.off().find('.file-panel').off().end().remove();
        }

        function updateTotalProgress() {
            var loaded = 0,
                total = 0,
                spans = $progress.children(),
                percent;

            $.each(percentages, function (k, v) {
                total += v[0];
                loaded += v[0] * v[1];
            });

            percent = total ? loaded / total : 0;

            spans.eq(0).text(Math.round(percent * 100) + '%');
            spans.eq(1).css('width', Math.round(percent * 100) + '%');
            updateStatus();
        }

        function updateStatus() {
            var text = '', stats;

            if (state === 'ready') {
                text = '选中' + fileCount + '张图片，共' +
                        WebUploader.formatSize(fileSize) + '。';
            } else if (state === 'confirm') {
                stats = uploader.getStats();
                if (stats.uploadFailNum) {
                    text = '已成功上传' + stats.successNum + '张照片至XX相册，' +
                        stats.uploadFailNum + '张照片上传失败，<a class="retry" href="#">重新上传</a>失败图片或<a class="ignore" href="#">忽略</a>'
                }

            } else {
                stats = uploader.getStats();
                text = '共' + fileCount + '张（' +
                        WebUploader.formatSize(fileSize) +
                        '），已上传' + stats.successNum + '张';

                if (stats.uploadFailNum) {
                    text += '，失败' + stats.uploadFailNum + '张';
                }
            }

            $info.html(text);
        }

        function setState(val) {
            var file, stats;

            if (val === state) {
                return;
            }

            $upload.removeClass('state-' + state);
            $upload.addClass('state-' + val);
            state = val;

            switch (state) {
                case 'pedding':
                    $placeHolder.removeClass('element-invisible');
                    $queue.parent().removeClass('filled');
                    $queue.hide();
                    $statusBar.addClass('element-invisible');
                    uploader.refresh();
                    break;

                case 'ready':
                    $placeHolder.addClass('element-invisible');
                    $('#filePicker2').removeClass('element-invisible');
                    $queue.parent().addClass('filled');
                    $queue.show();
                    $statusBar.removeClass('element-invisible');
                    uploader.refresh();
                    break;

                case 'uploading':
                    $('#filePicker2').addClass('element-invisible');
                    $progress.show();
                    $upload.text('暂停上传');
                    break;

                case 'paused':
                    $progress.show();
                    $upload.text('继续上传');
                    break;

                case 'confirm':
                    $progress.hide();
                    $upload.text('开始上传').addClass('disabled');

                    stats = uploader.getStats();
                    if (stats.successNum && !stats.uploadFailNum) {
                        setState('finish');
                        return;
                    }
                    break;
                case 'finish':
                    stats = uploader.getStats();
                    if (stats.successNum) {
                        alert('上传成功');
                    } else {
                        // 没有成功的图片，重设
                        state = 'done';
                        location.reload();
                    }
                    break;
            }

            updateStatus();
        }

        uploader.onUploadProgress = function (file, percentage) {
            var $li = $('#' + file.id),
                $percent = $li.find('.progress span');

            $percent.css('width', percentage * 100 + '%');
            percentages[file.id][1] = percentage;
            updateTotalProgress();
        };

        uploader.onFileQueued = function (file) {
            fileCount++;
            fileSize += file.size;

            if (fileCount === 1) {
                $placeHolder.addClass('element-invisible');
                $statusBar.show();
            }

            addFile(file);
            setState('ready');
            updateTotalProgress();
        };

        uploader.onFileDequeued = function (file) {
            fileCount--;
            fileSize -= file.size;

            if (!fileCount) {
                setState('pedding');
            }

            removeFile(file);
            updateTotalProgress();

        };

        uploader.on('all', function (type) {
            var stats;
            switch (type) {
                case 'uploadFinished':
                    setState('confirm');
                    break;

                case 'startUpload':
                    setState('uploading');
                    break;

                case 'stopUpload':
                    setState('paused');
                    break;

            }
        });

        uploader.onError = function (code) {
            alert('Eroor: ' + code);
        };

        $upload.on('click', function () {
            if ($(this).hasClass('disabled')) {
                return false;
            }

            if (state === 'ready') {
                uploader.upload();
            } else if (state === 'paused') {
                uploader.upload();
            } else if (state === 'uploading') {
                uploader.stop();
            }
        });

        $info.on('click', '.retry', function () {
            uploader.retry();
        });

        $info.on('click', '.ignore', function () {
            alert('todo');
        });

        $upload.addClass('state-' + state);
        updateTotalProgress();
    });
</script>

后台上传和使用CodeCarvings生成缩略图和水印的代码

需要使用nuget安装CodeCarvings.Piczard

public JsonResult Pics_Upload(int houseId,HttpPostedFileBase file)
        {
            string md5 = CommonHelper.CalcMD5(file.InputStream);
            string ext = Path.GetExtension(file.FileName);
            string path = "/upload/" + DateTime.Now.ToString("yyyy/MM/dd") + "/" + md5 + ext;// /upload/2017/07/07/afadsfa.jpg
            string thumbPath = "/upload/" + DateTime.Now.ToString("yyyy/MM/dd") + "/" + md5 + "_thumb" + ext;
            string fullPath = HttpContext.Server.MapPath("~" + path);//d://22/upload/2017/07/07/afadsfa.jpg
            string thumbFullPath = HttpContext.Server.MapPath("~" + thumbPath);
            new FileInfo(fullPath).Directory.Create();//尝试创建可能不存在的文件夹

            file.InputStream.Position = 0;//指针复位
            //file.SaveAs(fullPath);//SaveAs("d:/1.jpg");
            //缩略图
            ImageProcessingJob jobThumb = new ImageProcessingJob();
            jobThumb.Filters.Add(new FixedResizeConstraint(200, 200));//缩略图尺寸200*200
            jobThumb.SaveProcessedImageToFileSystem(file.InputStream, thumbFullPath);

            file.InputStream.Position = 0;//指针复位

            //水印
            ImageWatermark imgWatermark =
                new ImageWatermark(HttpContext.Server.MapPath("~/images/watermark.jpg"));
            imgWatermark.ContentAlignment = System.Drawing.ContentAlignment.BottomRight;//水印位置
            imgWatermark.Alpha = 50;//透明度，需要水印图片是背景透明的png图片
            ImageProcessingJob jobNormal = new ImageProcessingJob();
            jobNormal.Filters.Add(imgWatermark);//添加水印
            jobNormal.Filters.Add(new FixedResizeConstraint(600, 600));
            jobNormal.SaveProcessedImageToFileSystem(file.InputStream, fullPath);

            HouseSrv.AddNewHousePic(new HousePicDTO { HouseId = houseId, Url = path, ThumbUrl = thumbPath });

            CreateStaticPage(houseId);//上传了新图片或者删除图片都要重新生成html页面

            return Json(AjaxResult.Init(true));
        }