通过js-xlsx纯前端导出excel

修改excel的样式,可以在转换数据之后进行修改

如:    需要导入xlsx   以及  xlsx-style依赖  以及 两个文件  Blob.js 和 Export2Excel.js

导入这两个js之后,修改下面的函数就可以进行自定义的样式修改了。

export  function   exportJsonToExceln (column, list, defaultTitle ,ranges, headnums) {

            /* 表头 */

            const tHeader = []

            const filterVal = []

            /* 获取列宽 */

            const wpx = [];

            const tTitle = [];

            let tTitleName ='';

            if (defaultTitle.indexOf('-')  != -1 &&  defaultTitle.indexOf('-') == 5) {

                tTitleName = defaultTitle.substring(defaultTitle.indexOf('-')+1)

            }else {

                tTitleName = defaultTitle

            }

            tTitle.push(tTitleName);

            for (var i =0;i < column.length; ++i) {

                tHeader.push(column[i].title);

                filterVal.push(column[i].key);

                var widthToWpx={wpx:''};

                if(undefined===column[i].width){

                    /* 如果没有设置长度默认 */

                    widthToWpx.wpx=column[i].title.length*15+10

                  }else{

                    widthToWpx.wpx=column[i].width*1.5

                  }

                wpx.push(widthToWpx)

            }

            /* 转换数据格式 */

            const data =formatJson(filterVal, list)

            data.unshift(tHeader);

            /* 分析报表头部信息 */

            if (otherInfo[0] !=1) {

                for (var i =1;i < otherInfo[0];i++) {

                    data.unshift(otherInfo[i+1])

                }

            }

            // 将导出内容标题放在数组的头部

            data.unshift(tTitle);

            //  针对从后台返回数据为null,由于null在导出的excel中是未定义的,所以不能设置样式,在这里去空

            for (let i=otherInfo[0] +1;i < data.length - 2; i++) {

                let dataj =data[i]

                for (let j=0;j < dataj.length; j++ ){

                    if (dataj[j] ===null ||dataj[j] ===undefined) {

                        dataj[j] =''

                    }else if (!isNaN(dataj[j])) {

                        dataj[j] =dataj[j].toString()

                    }

                }

            }

            /* 创建workbook对象,并且转换数据 */

            var wb =new Workbook(),ws =sheet_from_array_of_arrays(data);

            /* 设置单元格宽,单位为px */

            ws['!cols']=wpx;

            // 编辑excel格式,需要在此处添加对应的规则

            ws['!merges'] = otherInfo[1];

            let rawnums = column.length;

            let colnums = list.length - otherInfo[0];

            if (otherInfo[0] ==1) {

                colnums =colnums -1

            }

            ws['A1'].s = {

                font: {sz:20,bold:true,},

                alignment: {

                    horizontal:"center",vertical:"center",wrap_text:true

                  }

            };

            // ws[num2] 是导出excel格式话的重点,也就是excel中各单元格的坐标

            for(var i =1 ;i <=rawnums ;i++) {

                let num =i +64;

                let num2 =String.fromCharCode(num) + (otherInfo[0] +1);

                if (ws[num2] !=undefined) {

                    ws[num2].s = {

                        font: {sz:10,bold:true,},

                        alignment: {

                            horizontal:"center",vertical:"center",wrap_text:true

                          },

                         border:{

                            top:{style:'thin'},left:{style:'thin'},bottom:{style:'thin'},right:{style:'thin'}

                        }

                    };

                }

            }

            for(var i =1 ;i <=rawnums ;i++) {

                let num =i +64;

                for (var j =1;j <=colnums;j++) {

                    let num2 =String.fromCharCode(num) + (j + otherInfo[0] +1);

                    if (ws[num2] !=undefined) {

                        if (isNaN(ws[num2].v)) {

                            ws[num2].s = {

                                font: {sz:10,bold:false,},

                                alignment: {horizontal:"left",vertical:"center",wrap_text:true},

                                border: {top: {style:'thin'},left: {style:'thin'},bottom: {style:'thin'},right: {style:'thin'}}

                            };

                        }else {

                            ws[num2].s = {

                                font: {sz:10,bold:false,},

                                alignment: {horizontal:"right",vertical:"center",wrap_text:true},

                                border: {top: {style:'thin'},left: {style:'thin'},bottom: {style:'thin'},right: {style:'thin'}}

                            };

                        }

                    }

                }

            }

            var ws_name ="Sheet1";

            wb.SheetNames.push(ws_name);

            wb.Sheets[ws_name] =ws;

            var title = defaultTitle ||'列表';

            var wbout =XLSX.write(wb, {bookType:'xlsx',bookSST:false,type:'binary'});

            /* 创建二进制对象写入转换好的字节流*/

            saveAs(new Blob([s2ab(wbout)], {type:"application/octet-stream"}),title +".xlsx");

        }

下面是导出excel的样式,更多样式,读者可以自己尝试。。

谢谢!!!!


导出样式

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