對百度WebUploader的二次封裝,精簡前端代碼之圖片預覽上傳(兩句代碼搞定上傳)

前言

本篇文章上一篇:

對百度WebUploader開源上傳控件的二次封裝,精簡前端代碼(兩句代碼搞定上傳)

此篇是在上面的基礎上擴展出來專門上傳圖片的控件封裝.

首先我們看看效果:

 

 

正文

使用方式同樣很簡單,首先創建HTML容器如下:

<div id="uploader" class="uploaderPic"> </div>

 

然后頁面加載完成后渲染:

    $(function () {
        $("#uploader").powerWebUpload({ auto: false });
    })

就搞定了.

下面還是老規矩,直接上源碼:

/*
基於百度webuploader的圖片上傳JQ插件(需引用JQ)
作者:顧振印
時間:2016-07-07
*/

(function ($, window) {
    var applicationPath = window.applicationPath === "" ? "" : window.applicationPath || "../..";
    var UpdataLoadarrayObj = new Array();
    function SuiJiNum() {
        return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);
    }

    function initWebUpload(item, options) {

        if (!WebUploader.Uploader.support()) {
            var error = "上傳控件不支持您的瀏覽器！請嘗試升級flash版本或者使用Chrome引擎的瀏覽器。<a target='_blank' href='http://se.360.cn'>下載頁面</a>";
            if (window.console) {
                window.console.log(error);
            }
            $(item).text(error);
            return;
        }
        var target = $(item);//容器
        if (target.find(".uploader-list").length > 0) {
            return;
        }
        //創建默認參數
        var defaults = {
            auto: true,
            hiddenInputId: "uploadifyHiddenInputId", // input hidden id
            onAllComplete: function (event) { }, // 當所有file都上傳后執行的回調函數
            onComplete: function (event) { },// 每上傳一個file的回調函數
            fileNumLimit: undefined,//驗證文件總數量, 超出則不允許加入隊列
            fileSizeLimit: undefined,//驗證文件總大小是否超出限制, 超出則不允許加入隊列。
            fileSingleSizeLimit: undefined,//驗證單個文件大小是否超出限制, 超出則不允許加入隊列
            PostbackHold: false
        };
        var opts = $.extend(defaults, options);
        var hdFileData = $("#" + opts.hiddenInputId);
        var pickerid = "";
        if (typeof guidGenerator36 != 'undefined')//給一個唯一ID
            pickerid = guidGenerator36();
        else
            pickerid = (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);
        var uploaderStrdiv = '<div class="webuploader">'
        if (opts.auto) {
            uploaderStrdiv =
            '<div  class="uploader-list"></div>' +
            '<div class="btns">' +
            '<div id="' + pickerid + '">選擇文件</div>' +
            '</div>'

        } else {
            uploaderStrdiv =
            '<div  class="uploader-list"></div>' +
            '<div class="btns">' +
            '<div id="' + pickerid + '">選擇文件</div>' +
            '<button class="webuploadbtn">開始上傳</button>' +
            '</div>'
        }
        uploaderStrdiv += '<div style="display:none" class="UploadhiddenInput" >\
                         </div>'
        uploaderStrdiv += '</div>';
        target.append(uploaderStrdiv);

        var $list = target.find('.uploader-list'),
             $btn = target.find('.webuploadbtn'),//手動上傳按鈕備用
             state = 'pending',
             $hiddenInput = target.find('.UploadhiddenInput')
        var jsonData = {
            fileList: []
        };
        debugger;
        var webuploaderoptions = $.extend({

            // swf文件路徑
            swf: applicationPath + '/Scripts/webuploader/Uploader.swf',
            // 文件接收服務端。
            server: '/Home/AddFile',
            deleteServer: '/Home/DeleteFile',
            // 選擇文件的按鈕。可選。
            // 內部根據當前運行是創建，可能是input元素，也可能是flash.
            pick: '#' + pickerid,
            //不壓縮image, 默認如果是jpeg，文件上傳前會壓縮一把再上傳！
            resize: false,
            runtimeOrder: 'flash',
            fileNumLimit: opts.fileNumLimit,
            fileSizeLimit: opts.fileSizeLimit,
            fileSingleSizeLimit: opts.fileSingleSizeLimit,
            //限制只能上傳圖片,格式gif,jpg,jpeg,bmp,png
            accept: {
                title: 'Images',
                extensions: 'gif,jpg,jpeg,bmp,png',
                mimeTypes: 'image/*'
            }
        },
        opts);
        var uploader = WebUploader.create(webuploaderoptions);
        UpdataLoadarrayObj[$(item)[0].id] = uploader;
       var  ratio = window.devicePixelRatio || 1

        // 縮略圖大小
       var thumbnailWidth = 110 * ratio
       var thumbnailHeight = 110 * ratio
       if (opts.auto) {
           // 優化retina, 在retina下這個值是2

           uploader.on('fileQueued', function (file) {

               var $li = $('<div id="' + $(item)[0].id + file.id + '" class="file-item thumbnail">' +
                           '<img>' +
                           '<div class="info">' + file.name + '</div>' +
                          '</div>');

               $img = $li.find('img');
               uploader.makeThumb(file, function (error, src) {
                   if (error) {
                       $img.replaceWith('<span>不能預覽</span>');
                       return;
                   }

                   $img.attr('src', src);
               }, thumbnailWidth, thumbnailHeight);

               // $list為容器jQuery實例
               $list.append($li);

               $btns = $('<div class="file-panel">' +
              '<span class="cancel">刪除</span>').appendTo($li)
               uploader.upload();
           });
       } else {
           uploader.on('fileQueued', function (file) {//隊列事件

               var $li = $('<div id="' + $(item)[0].id + file.id + '" class="file-item thumbnail">' +
                           '<img>' +
                           '<div class="info">' + file.name + '</div>' +
                          '</div>');

               $img = $li.find('img');
               uploader.makeThumb(file, function (error, src) {
                   if (error) {
                       $img.replaceWith('<span>不能預覽</span>');
                       return;
                   }

                   $img.attr('src', src);
               }, thumbnailWidth, thumbnailHeight);

               // $list為容器jQuery實例
               $list.append($li);

               $btns = $('<div class="file-panel">' +
              '<span class="cancel">刪除</span>').appendTo($li)
           });
       }
        // 文件上傳過程中創建進度條實時顯示。
        uploader.on('uploadProgress', function (file, percentage) {
            var $li = $('#' + $(item)[0].id + file.id),
                $percent = $li.find('.progress span');

            // 避免重復創建
            if (!$percent.length) {
                $percent = $('<p class="progress"><span></span></p>')
                        .appendTo($li)
                        .find('span');
            }

            $percent.css('width', percentage * 100 + '%');
        });

        // 文件上傳成功，給item添加成功class, 用樣式標記上傳成功。
        uploader.on('uploadSuccess', function (file, response) {
            $('#' + $(item)[0].id + file.id).addClass('upload-state-done');
            var $li = $('#' + $(item)[0].id + file.id),
                $error = $li.find('div.error');

            // 避免重復創建
            if (!$error.length) {
                $error = $('<div class="success"></div>').appendTo($li);
            }
            if (response.state == "error") {
                $error.text(response.message);
            } else {
                $error.text('上傳完成');
                $hiddenInput.append('<input type="text" id="hiddenInput' + $(item)[0].id + file.id + '" class="hiddenInput" value="' + response.message + '" />')
            }
          
        });

        // 文件上傳失敗，顯示上傳出錯。
        uploader.on('uploadError', function (file) {
            var $li = $('#' + $(item)[0].id + file.id),
                $error = $li.find('div.error');

            // 避免重復創建
            if (!$error.length) {
                $error = $('<div class="error"></div>').appendTo($li);
            }

            $error.text('上傳失敗');
        });

        // 完成上傳完了，成功或者失敗，先刪除進度條。
        uploader.on('uploadComplete', function (file, response) {
            $('#' + $(item)[0].id + file.id).find('.progress').remove();
        });

        //uploader.on('uploadProgress', function (file, percentage) {//進度條事件
        //    var $li = target.find('#' + $(item)[0].id + file.id),
        //        $percent = $li.find('.progress .bar');

        //    // 避免重復創建
        //    if (!$percent.length) {
        //        $percent = $('<span class="progress">' +
        //            '<span  class="percentage"><span class="text"></span>' +
        //          '<span class="bar" role="progressbar" style="width: 0%">' +
        //          '</span></span>' +
        //        '</span>').appendTo($li).find('.bar');
        //    }

        //    $li.find('span.webuploadstate').html('上傳中');
        //    $li.find(".text").text(Math.round(percentage * 100) + '%');
        //    $percent.css('width', percentage * 100 + '%');
        //});
        //uploader.on('uploadSuccess', function (file, response) {//上傳成功事件
        //    if (response.state == "error") {
        //        target.find('#' + $(item)[0].id + file.id).find('span.webuploadstate').html(response.message);
        //    } else {
        //        target.find('#' + $(item)[0].id + file.id).find('span.webuploadstate').html('已上傳');
        //        $hiddenInput.append('<input type="text" id="hiddenInput' + $(item)[0].id + file.id + '" class="hiddenInput" value="' + response.message + '" />')
        //    }
        //});

        //uploader.on('uploadError', function (file) {
        //    target.find('#' + $(item)[0].id + file.id).find('span.webuploadstate').html('上傳出錯');
        //});

        //uploader.on('uploadComplete', function (file) {//全部完成事件
        //    target.find('#' + $(item)[0].id + file.id).find('.progress').fadeOut();
        //});



        uploader.on('all', function (type) {
            if (type === 'startUpload') {
                state = 'uploading';
            } else if (type === 'stopUpload') {
                state = 'paused';
            } else if (type === 'uploadFinished') {
                state = 'done';
            }

            if (state === 'uploading') {
                $btn.text('暫停上傳');
            } else {
                $btn.text('開始上傳');
            }
        });

        //刪除時執行的方法
        uploader.on('fileDequeued', function (file) {
            debugger;
            var fullName = $("#hiddenInput" + $(item)[0].id + file.id).val();
            if (fullName != null) {
                $.post(webuploaderoptions.deleteServer, { fullName: fullName }, function (data) {
                    // alert(data.message);
                })
            }
            $("#" + $(item)[0].id + file.id).remove();
            $("#hiddenInput" + $(item)[0].id + file.id).remove();

        })

        //多文件點擊上傳的方法
        $btn.on('click', function () {
            if (state === 'uploading') {
                uploader.stop();
            } else {
                uploader.upload();
            }
        });

        //刪除
        $list.on("click", ".file-panel", function () {
            debugger
            var $ele = $(this);
            var id = $ele.parent().attr("id");
            var id = id.replace($(item)[0].id, "");

            var file = uploader.getFile(id);
            uploader.removeFile(file);
        });

    }
    $.fn.CleanUpload = function (options) {
        var uploadrFile = UpdataLoadarrayObj[$(this).attr("id")]
        var fileslist = uploadrFile.getFiles();
        for (var i in fileslist) {
            uploadrFile.removeFile(fileslist[i]);
        }
        //var ele = $(this);
        //var filesdata = ele.find(".UploadhiddenInput");
        //filesdata.find(".hiddenInput").remove();
        //ele.find(".uploader-list .item").remove();
    }
    $.fn.GetFilesAddress = function (options) {
        var ele = $(this);
        var filesdata = ele.find(".UploadhiddenInput");
        var filesAddress = [];
        filesdata.find(".hiddenInput").each(function () {
            filesAddress.push($(this).val());
        })
        return filesAddress;

    }

    $.fn.powerWebUpload = function (options) {
        var ele = this;

        if (typeof WebUploader == 'undefined') {
            var casspath = applicationPath + "/Scripts/webuploader/webuploader.css";
            $("<link>").attr({ rel: "stylesheet", type: "text/css", href: casspath }).appendTo("head");
            var jspath = applicationPath + "/Scripts/webuploader/webuploader.min.js";
            $.getScript(jspath).done(function () {

                initWebUpload(ele, options);
            })
            .fail(function () {
                alert("請檢查webuploader的路徑是否正確!")
            });

        }
        else {
            initWebUpload(ele, options);
        }
    }
})(jQuery, window);

 

 

因為有一些樣式上的東西,所以還需要添加一部分CSS如下:

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

    .uploaderPic .queueList {
        margin: 20px;
        border: 3px dashed #e6e6e6;
    }

        .uploaderPic .queueList.filled {
            padding: 17px;
            margin: 0;
            border: 3px dashed transparent;
        }

        .uploaderPic .queueList.webuploader-dnd-over {
            border: 3px dashed #999999;
        }

    .uploaderPic p {
        margin: 0;
    }

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

    .uploaderPic .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;
    }

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

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

        .uploaderPic .placeholder .flashTip {
            color: #666666;
            font-size: 12px;
            position: absolute;
            width: 100%;
            text-align: center;
            bottom: 20px;
        }

            .uploaderPic .placeholder .flashTip a {
                color: #0785d1;
                text-decoration: none;
            }

                .uploaderPic .placeholder .flashTip a:hover {
                    text-decoration: underline;
                }

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

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

        .uploaderPic .filelist li {
            width: 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;
        }

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

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

            .uploaderPic .filelist li p.progress {
                position: absolute;
                width: 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;
            }

                .uploaderPic .filelist li p.progress span {
                    display: none;
                    overflow: hidden;
                    width: 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;
        }
    }

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

    .uploaderPic .filelist li img {
        width: 100%;
    }

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

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

    .uploaderPic .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 );
        width: 100%;
        top: 0;
        left: 0;
        overflow: hidden;
        z-index: 300;
    }

        .uploaderPic .filelist div.file-panel span {
            width: 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;
        }

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

                .uploaderPic .filelist div.file-panel span.rotateLeft:hover {
                    background-position: 0 0;
                }

            .uploaderPic .filelist div.file-panel span.rotateRight {
                background-position: -24px -24px;
            }

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

            .uploaderPic .filelist div.file-panel span.cancel {
                background-position: -48px -24px;
            }

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

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

        .uploaderPic .statusBar .progress {
            border: 1px solid #1483d8;
            width: 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;
        }

            .uploaderPic .statusBar .progress span.percentage {
                width: 0;
                height: 100%;
                left: 0;
                top: 0;
                background: #1483d8;
                position: absolute;
            }

            .uploaderPic .statusBar .progress span.text {
                position: relative;
                z-index: 10;
            }

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

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

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

    .uploaderPic .statusBar .btns .webuploader-pick,
    .uploaderPic .statusBar .btns .uploadBtn,
    .uploaderPic .statusBar .btns .uploadBtn.state-uploading,
    .uploaderPic .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;
    }

        .uploaderPic .statusBar .btns .webuploader-pick-hover,
        .uploaderPic .statusBar .btns .uploadBtn:hover,
        .uploaderPic .statusBar .btns .uploadBtn.state-uploading:hover,
        .uploaderPic .statusBar .btns .uploadBtn.state-paused:hover {
            background: #f0f0f0;
        }

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

        .uploaderPic .statusBar .btns .uploadBtn:hover {
            background: #00a2d4;
        }

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