So verbinden Sie einen Drucker in JavaScript-js-Tutorial-php.cn

Im Folgenden werde ich Ihnen ein Beispiel für die Verwendung von JavaScript zum Anschließen eines Druckers und zum Drucken einer Quittung vorstellen. Es hat einen guten Referenzwert und ich hoffe, dass es für alle hilfreich sein wird.

Wie unten gezeigt:

<%@ page contentType="text/html;charset=UTF-8"%>
<%@ include file="/webpage/include/taglib.jsp"%>
<!-- <!DOCTYPE html> -->
<html>
<head>
<meta name="decorator" content="default" />
<script type="text/javascript" src="${ctxStatic}/jquery-ztree/3.5.12/js/jquery-1.4.4.min.js"></script>
<script type="text/javascript" src="${ctxStatic}/newStyle/jsPdf.debug.js"></script>
<script type="text/javascript" src="${ctxStatic}/newStyle/html2canvas.js"></script>
<script type="text/javascript">
function doPrint(){
 
   bdhtml=window.document.body.innerHTML; 
   sprnstr="<!--startprint-->"; 
   eprnstr="<!--b-->"; 
   prnhtml=bdhtml.substr(bdhtml.indexOf(sprnstr)+17); 
   prnhtml=prnhtml.substring(0,prnhtml.indexOf(eprnstr)); 
   window.document.body.innerHTML=prnhtml; 
   window.print(); 
   top.layer.closeAll();
   
}
function closes (){
  top.layer.closeAll();
}

function downPdf(){
 document.getElementById("dayin").style.display = "none";
 document.getElementById("baocun").style.display = "none";
  html2canvas(document.body, {
   onrendered:function(canvas) {
    var contentWidth = canvas.width;
    var contentHeight = canvas.height;
    //一页pdf显示html页面生成的canvas高度;
    var pageHeight = contentWidth / 592.28 * 841.89;
    //未生成pdf的html页面高度
    var leftHeight = contentHeight;
    //pdf页面偏移
    var position = 0;
    //a4纸的尺寸[595.28,841.89]，html页面生成的canvas在pdf中图片的宽高
    var imgWidth = 595.28;
    var imgHeight = 592.28/contentWidth * contentHeight;
    var pageData = canvas.toDataURL(&#39;image/jpeg&#39;, 1.0);
    var pdf = new jsPDF(&#39;&#39;, &#39;pt&#39;, &#39;a4&#39;);
    //有两个高度需要区分，一个是html页面的实际高度，和生成pdf的页面高度(841.89)
    //当内容未超过pdf一页显示的范围，无需分页
    if (leftHeight < pageHeight) {
     pdf.addImage(pageData, &#39;JPEG&#39;, 0, 0, imgWidth, imgHeight );
    } else {
     while(leftHeight > 0) {
      pdf.addImage(pageData, &#39;JPEG&#39;, 0, position, imgWidth, imgHeight)
      leftHeight -= pageHeight;
      position -= 841.89;
      //避免添加空白页
      if(leftHeight > 0) {
       pdf.addPage();
      }
     }
    }
    pdf.save(document.getElementById("emNo").innerText+"("+document.getElementById("dt").innerText+&#39;).pdf&#39;);
   }
  })
  document.getElementById("baocun").style.display = "";
  document.getElementById("dayin").style.display = "";
}
</script>
</head>
<body >
<p style="width: 800px;height: 35px;">
 <button id="dayin" onclick="doPrint()" class="" style="border-bottom:1px solid #0071ce;float: right;background: #0071ce;color:rgb(255, 255, 255);font-size:13px;margin-right: 10px; margin-top: 10px;"><i class="fa fa-print"></i>打印</button>
 <button id="baocun" onclick="downPdf()" class="" style="border-bottom:1px solid #0071ce;float: right;background: #0071ce;color:rgb(255, 255, 255);font-size:13px;margin-right: 10px; margin-top: 10px;"><i class="fa fa-print"></i>保存</button>
</p>
<!--startprint-->
<br>
 <p id="print" style="padding-left: 15px; padding-right: 15px;">
  <table style="width: 100%">
   <tr>
    <td colspan="8" style="text-align: center;font-size: 20px;">新XXXXX物业服务中心</td>
   </tr>
   <tr >
    <td colspan="8"style="text-align: center;font-size: 14px;padding-top: 10px;">收费单据</td>
   </tr>
   <tr>
    <td colspan="2">收票类型：电费</td>
    <td colspan="3"></td>
    <td>缴费日期：</td>
    <td colspan="2" id="dt">${emfee.dt}</td>
   </tr>
   <tr>
    <td style="text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">户名</td>
    <td style="text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.userName}</td>
    <td style="text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">表号</td>
    <td id="emNo" colspan="2" style="text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.emNo}</td>
    <td style=" text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">房号</td>
    <td colspan="2" style=" text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.num}</td>
   </tr>
   <tr>
    <td style=" text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">起止时间</td>
    <td colspan="3" style=" text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.emDt}至${emfee.startDt}</td>
    <td style=" text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">缴费金额</td>
    <td style=" text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.tranMoney}</td>
    <td style="text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">倍率</td>
    <td style="text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.emRate}</td>
   </tr>
   <tr>
    <td rowspan="6" style="width: 12%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;">用电量</td>
    <td style="width: 12%; text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">时段</td>
    <td colspan="2" style="width: 13%; text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">起止表码</td>
    <td style="width: 12%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">倍率前用量</td>
    <td style="width: 12%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">本次用量</td>
    <td style="width: 13%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">单价</td>
    <td style="width: 13%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">本次电费</td>
   </tr>
   <tr>
    <td style="width: 12%; text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">尖</td>
    <td colspan="2" style="width: 13%; text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.mosaicJian}</td>
    <td style="width: 12%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.jianQuantity}</td>
    <td style="width: 12%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.blJian}</td>
    <td style="width: 13%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.jian}</td>
    <td style="width: 13%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.jianFee}</td>
   </tr>
   <tr>
    <td style="width: 12%; text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">峰</td>
    <td colspan="2" style="width: 13%; text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.mosaicFeng}</td>
    <td style="width: 12%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.fengQuantity}</td>
    <td style="width: 12%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.blFeng}</td>
    <td style="width: 13%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.feng}</td>
    <td style="width: 13%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.fengFee}</td>
   </tr>
   <tr>
    <td style="width: 12%; text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">平</td>
    <td colspan="2" style="width: 13%; text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.mosaicPing}</td>
    <td style="width: 12%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.pingQuantity}</td>
    <td style="width: 12%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.blPing}</td>
    <td style="width: 13%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.ping}</td>
    <td style="width: 13%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.pingFee}</td>
   </tr>
   <tr>
    <td style="width: 12%; text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">谷</td>
    <td colspan="2" style="width: 13%; text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.mosaicGu}</td>
    <td style="width: 12%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.guQuantity}</td>
    <td style="width: 12%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.blGu}</td>
    <td style="width: 13%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.gu}</td>
    <td style="width: 13%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.guFee}</td>
   </tr>
   <tr>
    <td style="width: 12%; text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">总</td>
    <td colspan="2" style="width: 13%; text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.mosaicZong}</td>
    <td style="width: 12%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.quantity}</td>
    <td style="width: 12%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">${emfee.blquantity}</td>
    <td style="width: 13%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">——</td>
    <td style="width: 13%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;">${emfee.electFee}</td>
   </tr>
   <tr>
    <td rowspan="2" style="text-align: center;font-size: 14px;height:40px;border:1px solid #000000;">电费</td>
    <td style="width: 12%; text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">上次剩余(元)</td>
    <td colspan="2" style="width: 13%; text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">本期已用(元)</td>
    <td colspan="2" style="width: 12%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">本次缴费(元)</td>
    <td colspan="2" style="width: 13%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;border-bottom:0px solid #000000;">本次剩余(元)</td>
   </tr>
   <tr>
    <td style="width: 12%; text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;">${emfee.lastRemainQ}</td>
    <td colspan="2" style="width: 13%; text-align: center ;font-size: 14px;height: 40px;border:1px solid #000000;">${emfee.electFee}</td>
    <td colspan="2" style="width: 12%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;">${emfee.tranMoney}</td>
    <td colspan="2" style="width: 13%; text-align: center;font-size: 14px;height: 40px;border:1px solid #000000;">${emfee.remainQ}</td>
   </tr>
   <tr>
    <td colspan="2" style="text-align: center;font-size: 14px;height: 40px;"></td>
    <td style="text-align: center;font-size: 14px;height: 40px;">收款人：</td>
    <td colspan="2" style="text-align: center;font-size: 14px;height: 40px;"></td>
    <td style="text-align:center ;font-size: 14px;height: 40px;">付款人：</td>
    <td colspan="2" style="text-align:center ;font-size: 14px;height: 40px;"></td>
   </tr>
  </table>
 <!--b-->
 </p>
</body>
</html>

Nach dem Login kopieren

Das Obige habe ich für alle zusammengestellt. Ich hoffe, dass es in Zukunft für alle hilfreich sein wird.

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