WebUploader 设置单个文件上传

1.导入控件样式文件

<link rel="stylesheet" type="text/css" href="__PUBLIC__/statics/webuploader-0.1.5/demo.css">
<link rel="stylesheet" type="text/css" href="__PUBLIC__/statics/webuploader-0.1.5/webuploader.css">

2.导入控件Js文件

<script type="text/javascript" src="__PUBLIC__/statics/webuploader-0.1.5/webuploader.js"></script>

3.HTML代码片段

<tr>
       <th width="30%">附件：</th>
       <td>
              <div class="page-container">
                    <div id="uploader" class="wu-example">
                          <div class="queueList"></div>
                                <div class="statusBar" >
                                       <div class="btns">
                                       <div id="filePicker"></div>
                                       <div class="uploadBtn">开始上传</div>
                                       </div>
                                </div>
                         </div>
                   </div>                                
        </td>
</tr>

4.javascript 实现控件设置

// 文件上传
    jQuery(function () {
    
        //定义参数
        var $ = jQuery,
            $wrap = $('#uploader'),
            $queue = $('<ul class="filelist"></ul>')
                   .appendTo($wrap.find('.queueList')),
            fileCount = 0,
            fileSize = 0,
            ratio = window.devicePixelRatio || 1,
            // 缩略图大小
            thumbnailWidth = 110 * ratio,
            thumbnailHeight = 110 * ratio,
            percentages = {},
            //是否支持旋转
            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;
            })(),
            state = 'pedding',
            //上传按钮
            $upload = $wrap.find('.uploadBtn'),
            errMsg = '上传失败，请重试';
        uploader;
 
        //实例化
        uploader = WebUploader.create({
            pick: {
                id: '#filePicker',
                label: '点击选择文件'
            },

            accept: {
                title: 'myself',
                extensions: 'gif,jpg,jpeg,bmp,png,pdf,doc,docx,xls,xlsx,rar,zip',
                mimeTypes: 'image/*,application/pdf,application/msword,application/msexcel,application/rar,application/zip,application/vnd.openxmlformats-officedocument.wordprocessingml.document'
            },

            // swf文件路径
            swf: '__PUBLIC__/statics/webuploader-0.1.5/Uploader.swf',

            server: '{:U("Upload/uploaddata")}',
            duplicate: true

        });
 
        function setState(val) {
            var file, stats;

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

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

            switch (state) {
                case 'pedding':      //待定
                    $queue.parent().removeClass('filled');
                    $queue.hide();
                    uploader.refresh();
                    break;

                case 'ready':
                    $('#filePicker').removeClass('element-invisible');
                    $queue.parent().addClass('filled');
                    $queue.show();

                    uploader.refresh();
                    break;

                case 'uploading':
                    $('#filePicker').addClass('element-invisible');

                    $upload.text('暂停上传');
                    break;

                case 'paused':

                    $upload.text('继续上传');
                    break;

                case 'confirm':

                    $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();
                    console.log(stats);
                    if (stats.successNum) {
                        // alert('上传成功');
                        layer.msg('上传成功',{icon:1,time:1000}); 
                    } else {
                        // 没有成功的图片，重设
                        state = 'done';
                        location.reload();
                    }
                    break;
            }

            if (state != "ready") {
                $('#filePicker').removeClass('element-invisible');

                $upload.text('开始上传').removeClass('disabled');
            }
        }
 
        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 = errMsg;;
                                break;
                        }
                        $info.text(text).appendTo($li);
                    };



            //1.生成缩略图
            if (file.getStatus() === 'invalid') {  //不合格
                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;
            }
            //2.文件状态变化
            file.on('statuschange', function (cur, prev) {
                //前一个状态
                if (prev === 'progress') {             //上传中
                    $prgress.hide().width(0);
                }
                else if (prev === 'queued') {          //进入队列,等待上传
                    $li.off('mouseenter mouseleave');
                    $btns.remove();
                }

                // 成功
                if (cur === 'error' || cur === 'invalid') {    //失败不合格
                    showError(file.statusText);
                    percentages[file.id][1] = 1;
                } else if (cur === 'interrupt') {           //暂停
                    showError('interrupt');
                } else if (cur === 'queued') {              //队列中
                    percentages[file.id][1] = 0;
                } else if (cur === 'progress') {            //上传中
                    $info.remove();
                    $prgress.css('display', 'block');
                } else if (cur === 'complete') {            //上传完成
                    $li.append('<span class="success"></span>');
                }

                $li.removeClass('state-' + prev).addClass('state-' + cur);
            });
            //3.缩略图标签 旋转删除
            $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) + ')');

                }
            });

            $li.appendTo($queue);
        }
 
        function removeFile(file) {
            var $li = $('#' + file.id);
            delete percentages[file.id];
            $li.off().find('.file-panel').off().end().remove();
        }


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

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

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

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

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

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

            removeFile(file);


        };

        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);
            layer.msg('Eroor: ' + code,{icon:1,time:1000}); 
        };
        uploader.on('uploadSuccess',function(file,response){
            
            $('#uploader').append('<input type="hidden" name="urls[]" value="'+response.file_name+'@'+response.url+'" />');
            console.log(response);
        })
        uploader.on('uploadAccept', function (file, response) {

            
            var hasError = (response["result"] === "error");

            if (hasError) {
                // 通过return false来告诉组件，此文件上传有错。

                errMsg = response['error']["message"];
                return false;
            } else {
                console.log(file);
            }
        });


        uploader.on('uploadBeforeSend', function (file, data) {
            data.opr = 'newupload';
            data.type = $("#hidtype").val();
            data.pid = $("#hidpid").val();

        });


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

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

        $upload.addClass('state-' + state);
    })

5.在上段JavaScript中是设置的多文件上传，可以通过以下方式实现单文件上传

pick: {
                id: '#filePicker',
                multiple:false, 
                label: '点击选择图片'
            },
fileNumLimit: 1,