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assets/lib/excel/excel.xlsx.js

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+define(['xlsx'], function () {
+
+    function excel(data, filename, sheetname) {
+        this.name = sheetname || 'sheet1';
+        this.sheet = XLSX.utils.aoa_to_sheet(data);
+        if (filename.substr(-5).toLowerCase() !== '.xlsx') {
+            filename += '.xlsx';
+        }
+        openDownloadDialog(sheet2blob(this.sheet, this.name), filename);
+    }
+
+    excel.bind = function (done, filename) {
+        $('body').off('click', '[data-form-export]').on('click', '[data-form-export]', function () {
+            var form = $(this).parents('form');
+            var method = $(this).attr('data-method') || 'get';
+            var location = $(this).attr('data-form-export') || form.get(0).action || '';
+            excel.load(location, form.serialize(), done, filename, method);
+        })
+    };
+
+    excel.load = function (url, data, done, filename, method) {
+        var alldata = [];
+        var loading = $.msg.loading('正在加载 <span data-upload-page></span>，完成<span data-upload-progress>0</span>%');
+        nextPage(1, 1);
+
+        function nextPage(curPage, maxPage) {
+            if (curPage > maxPage) {
+                if (typeof done === 'function') {
+                    this.result = done(alldata);
+                    if (this.result !== false) {
+                        excel(this.result, filename || '文件下载.xlsx');
+                    } else {
+                        console.log('格式化函数返回`false`，已终止数据导出操作', alldata, this.result);
+                    }
+                } else {
+                    console.log('格式化函数未绑定，已终止数据导出操作', alldata);
+                }
+                $.msg.close(loading);
+            } else {
+                $('[data-upload-page]').html(curPage + '/' + maxPage);
+                $('[data-upload-progress]').html((curPage / maxPage * 100).toFixed(2));
+                $.form.load(url + (url.indexOf('?') > -1 ? '&' : '?') + 'output=json&page=' + curPage, data, method || 'get', function (ret) {
+                    if (ret.code) {
+                        alldata = alldata.concat(ret.data.list);
+                        return nextPage((ret.data.page.current || 1) + 1, ret.data.page.pages || 1), false;
+                    }
+                }, false);
+            }
+        }
+    }
+
+    return excel;
+
+    /*! Sheet 转下载对象 */
+    function sheet2blob(sheet, name) {
+        this.workbook = {SheetNames: [name], Sheets: {}};
+        this.workbook.Sheets[name] = sheet;
+        this.content = XLSX.write(this.workbook, {
+            type: 'binary', bookSST: false, bookType: 'xlsx',
+        });
+        return new Blob([toArrayBuffer(this.content)], {
+            type: "application/octet-stream"
+        });
+    }
+
+    /*! 字符串转 ArrayBuffer */
+    function toArrayBuffer(s) {
+        this.buff = new ArrayBuffer(s.length);
+        this.view = new Uint8Array(this.buff);
+        for (this.index = 0; this.index !== s.length; ++this.index) {
+            this.view[this.index] = s.charCodeAt(this.index) & 0xFF;
+        }
+        return this.buff;
+    }
+
+    /*! 通用的打开下载对话框方法 */
+    function openDownloadDialog(location, filename) {
+        if (typeof location == 'object' && location instanceof Blob) {
+            location = URL.createObjectURL(location);
+        }
+        this.link = document.createElement('a');
+        this.link.download = filename || Date.now() + '.xlsx';
+        this.link.href = location;
+        if (window.MouseEvent) {
+            this.event = new MouseEvent('click');
+        } else {
+            this.event = document.createEvent('MouseEvents');
+            this.event.initMouseEvent('click', true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
+        }
+        this.link.dispatchEvent(this.event);
+    }
+});