C# 前端无插件打印导出实现方式详解

目录

• 打印
• 打印js
• 导出
• 单表格导出

打印

打印导出分布页

@model List<界面的数据模型类>
@using WingSoft;
@using Newtonsoft.Json;
<style type="text/css">
    .modal-content {
        width: 800px;
    }
    .modal-body {
        height: 400px;
    }
</style>
<script type="text/Javascript">
    $(function () {
        if (@ViewBag.pe== 0) {//打印
            let content = ''
            for (var i = 0; i < $(".boxDiv").length; i++) {
                content += $(".boxDiv").eq(i).html() + '<div></div>'
            }
            printFunc(content);
        } else {//导出（将所有数据导出到一个excel，多个工作表的形式）
            let contentArray = [];
            for (var i = 0; i < $(".boxDiv").length; i++) {
                contentArray.push({
                    html: $(".boxDiv").eq(i).html(),
                    name: "xx记录表" + (i + 1)
                });
            }
            exportToExcelBATch('xx记录表',contentArray)
        }
    });
</script>
<div class="modal fade" id="modal" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-hidden="true">
                    <img src="~/Images/icon_closed.png" />
                </button>
            </div>
            <div class="modal-body">
                @for (var i = 0; i < Model.Count; i++)
                {
                        <div class="boxDiv">
                            <style>
                                .boxDiv table {
                                    width: 100%;
                                    display: Flex;
                                    flex-direction: column;
                                    align-items: center;
                                }
                                .printTable {
                                    width: 100%;
                                    font-family: "宋体";
                                    border: 0px;
  www.devze.com                                  color: #333;
                                    font-size: 12px;
                                }
                                android    .printTable th {
                                        font-weight: 600;
                                        font-size: 14px;
                                    }
                                    .printTable td, .printTable th {
                                        text-align: center;
                                        padding: 3px 3px;
                                    }
                                .content td {
                                    border: 1px solid #4a4a4a;
                                }
                                .tabletitle1 {
                                    font-size: 20px;
                                    font-weight: bold;
                                }
                                .tabletitle2 {
                                    font-size: 18px;
                                    font-weight: bold;
                                    position: relative;
                                }
                                .contenleft {
                                    text-align: left !important;
                                }
                                .contenright {
                                    text-align: right !important;
                                }
                                .boxcontent {
                                    height: 30px;
                                    font-size: 14px;
                                }
                                .footertext {
                                    font-size: 14px;
                                }
                                .printTable td, .printTable th {
                                    border: 1px solid #E5E5E5;
                                    padding:3px;
                                    font-size:14px;
                                }
                                .printTable thead th{
                                    text-align:center;
                                }
                            </style>
                            <div class="modal-title">@Model[i].SchoolName 经营成本</div>
                            <div>
                                <span>食堂名称：@Model[i].CanteenName</span>
                                <span>登记时间：@Model[i].ForDate</span>
                            </div>
                            <table class="printTable" border=0 cellspacing=0 cellpadding=0>
                                <thead>
                                    <tr>
                                        <th>序号</th>
                                        <th>成本名称</th>
                                        <th>成本金额（元）</th>
                                        <th>备注</th>
                                    </tr>
                                </thead>
                                <tbody>
                                    @{
                        js                int index = 1;
                                    }
                                    @foreach (var item in Model[i].CostItemList)
                                    {
                                        <tr>
                                            <td>@(index++)</td>
                                            <td>@item.Name</td>
                                            <td>@item.TotalMoney</td>
                                            <td>@item.Remark</td>
                                        </tr>
                                    }
                                </tbody>
                            </table>
                        </div>
                }
            </div>
            <div class="modal-footer">
                <button pythontype="button" class="btn2 btn_90_28" data-dismiss="modal">关闭</button>
            </div>
        </div>
    </div>
</div>

打印js

// 打印
function printFunc(data) {
    loadStart();
    var iframeHtml = document.createElement("iframe");
    iframeHtml.id = "iframePrintBox";
    iframeHtml.style.width = "0";
    iframeHtml.style.height = "0";
    document.body.appendChild(iframeHtml);
    iframeHtml.srcdoc = '<!DOCTYPE html>' + data + "<script type='text\/javascript'>window.onload = function(){window.print();window.onafterprint = ()=>{window.parent.close();}}<\/script>";
    loadEnd()
}

导出

//多sheet导出
function exportToExcelBatch(sheetName, exportArr) {
    var fileName_g, sheetsName_g, mainHtml_g, sheetHtml_g
    // 导出函数
    sheetsName_g = getSheetsName()  //获取到每个sheet的名称集合
    fileName_g = sheetName + '.xlsx'  //外部导出名称
    sheetHtml_g = getSheetXML()     //得到每一个sheet的xml片段
    mainHtml_g = getMainXml()       //导出的主体xml片段
    let XLSData = 'data:application/vnd.ms-excelbase64,' + window.btoa(window.unescape(encodeURIComponent(mainHtml_g)))
    // 下载
    download(XLSData)
    // 下载
    function download(base64data) {
        let blob
        if (window.navigator.msSaveBlob) {
            blob = base64ToBlob(base64data)
            window.navigator.msSaveBlob(blob, sheetName + '.xlsx')
            return false
        }
        let a = document.createElement("a")
        if (window.URL.createObjectURL) {
            blob = base64ToBlob(base64data)
            a.href = window.URL.createObjectURL(blob)
            a.download = fileName_g
            a.click()
            return
        }
        a.href = base64data
        a.download = fileName_g
        a.click()
    }
    // 获取sheet名称
    function getSheetsName() {
        let sheetsName = []
        exportArr.forEach((item) => {
            sheetsName.push(item.name)
        })
        return sheetsName
    }
// 创建文件流
function base64ToBlob(base64Data) {
    let arr = base64Data.split(',')
    let mime = arr[0].match(/:(.*?)/)[1]
    let bstr = atob(arr[1])
    let n = bstr.length
    let u8arr = new Uint8ClampedArray(n)
    while (n--) {
        u8arr[n] = bstr.charCodeAt(n)
    }
    return new Blob([u8arr], { type: mime })
}
    /**
 * 文件下载
 * @param {any} url 文件路径
 * @param {any} fileName 文件名称
 */
    function downloadFile(url, fileName) {
        if (!url || !fileName) return false;
        let aUrl = url;
        const x = new XMLHttpRequest();
        x.open('GET', aUrl, true);
        x.responseType = 'blob';
        x.onload = function (e) {
            const url = window.URL.createObjectURL(x.response);
            const elink = document.createElement('a');
            elink.href = url;
            elink.target = '_self'; // 当前页 target打开新页面
            elink.download = `${fileName}`;
            elink.style.display = 'none';
            document.body.appendChild(elink);
            elink.click();
            document.body.removeChild(elink);
        };
        x.send();
    }
    // 获取所有xml代码
    function getMainXml() {
        let mainHtml = ''
        let sheets = ''
        if (sheetsName_g.length > 0) {
            for (let i = 0; i < sheetsName_g.length; i++) {
                let name = sheetsName_g[i]
                let sheetItem = `
    <x:ExcelWorksheet>
     <x:Name>${name}</x:Name>
     <x:WorksheetSource HRef=3D"export/sheet${name}.xml"/>
    </x:ExcelWorksheet>`
                sheets += sheetItem
            }
        }
        mainHtml = `MIME-Version: 1.0
X-Document-Type: Workbook
Content-Type: multipart/related; boundary="----memo----"
------memo----
Content-Location: file:///C:/0E8D990C/export.xml
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html; charset="us-ascii"
<html xmlns:o=3D"urn:schemas-microsoft-com:office:office"
xmlns:x=3D"urn:schemas-microsoft-com:office:excel"
xmlns=3D"http://www.w3.org/TR/REC-html40">
<head>
<xml>
 <o:DocumentProperties>
  <o:Author>ijovo</o:Author>
  <o:LastAuthor>ijovo</o:LastAuthor>
  <o:Company>ijovo</o:Company>
  <o:Version>1.0</o:Version>
 </o:DocumentProperties>
</xml>
<!--[if gte mso 9]>
<xml>
 <x:ExcelWorkbook>
  <x:ExcelWorksheets>${sheets}
  </x:ExcelWorksheets>
 </x:ExcelWorkbook>
</xml>
<![endif]-->
</head>
</html>` + sheetHtml_g + `
------memo------`
        return mainHtml
    }
    // 获取每个sheet的xml代码}
    function getSheetXml() {
        let sheetHtml = ''
        let sheets = ''
        for (let i = 0; i < exportArr.length; i++) {
            let name = exportArr[i].name
            // MIME要求格式必须顶格……所以这里排版比较乱……
            let sheetItem = `
------memo----
Content-Location: file:///C:/0E8D990C/export/sheet${name}.xml
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html; charset="us-ascii"
<html 
  xmlns:o="urn:schemas-microsoft-com:office:office"
  xmlns:x="urn:schemas-microsoft-com:office:excel"
  xmlns="http://www.w3.org/TR/REC-html40">
  <head>
    <xml>
      <x:WorksheetOptions>
        <x:ProtectContents>False</x:ProtectContents>
        <x:ProtectObjects>False</x:ProtectObjects>
        <x:ProtectScenarIOS>False</x:ProtectScenarios>
      </x:WorksheetOptions>
    </xml>
    <style>
      <!-- @page
        {mso-footer-data:"&C\\7B2C &P \\9875\\FF0C\\5171 &N \\9875";
        margin:0.748in 0.195in 0.748in 0.195in;
        mso-header-margin:0.51in;
        mso-footer-margin:0.51in;}
      -->
    </style>
  </head>
  <body>`
            let table = `<table border=0 cellspacing=0 cellpadding=0 width="100%" bordercolor="#000000">${exportArr[i].html}</table>`
            sheetItem += table + `
  </body>
</html>`
            sheets += sheetItem
        }
        sheetHtml = sheets
        return sheetHtml
    }
}

单表格导出

// 导出表格
function exportToExcel(sheetName, html) {
    var uri = 'data:application/vnd.ms-excel;base64,';
    var template = '<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel"' +
        'xmlns="http://www.w3.org/TR/REC-html40"><head><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet>'
        + '<x:Name>{worksheet}</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets>'
        + '</x:ExcelWorkbook></xml><![endif]-->' +
        ' <style type="text/css">' +
        'table td {' +
        'border: 0.5px solid #000000;' +
        'width: auto;' +
        'height: 25px;' +
        'text-align: center;' +
        'mso-number-format:\@;' +
        'vnd.ms-excel.numberformat:\@;' +
        /* 'background-color: #4f891e;' +*/
        /* 'color: #ffffff;' +*/
        ' }' +
        'table th {' +
        'border: 0.5px solid #000000;' +
        /* 'width: auto;' +*/
        'height: 35px;' +
        'text-align: center;' +
        'font-size:20px' +
        'mso-number-format:\@;' +
        'vnd.ms-excel.numberformat:\@;' +
        ' }' +
        '</style>' +
        '</head><body ><table>{table}</table></body></html>';
    //if (!tableid.nodeType) tableid = document.getElementById(tableid);
    //var ctx = { worksheet: sheetName || 'Worksheet', table: tableid.innerHTML };
    var ctx = { worksheet: sheetName || 'Worksheet', table: html };
    var a = document.编程createElement("a");
    a.download = sheetName + ".xls";
    a.href = uri + this.excelBase64(this.excelFormat(template, ctx));
    document.body.appendChild(a);
    a.click();
    document.body.removeChild(a);
}
// Excel格式
function excelFormat(s, c) {
    return s.replace(/{(\w+)}/g,
        function (m, p) {
            return c[p];
        });
}
// 纯js导出Excel
function excelBase64(excelFile) {
    return window.btoa(unescape(encodeURIComponent(excelFile)));
}

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