html加如下代码

<div style="display:none"> <div id="to_print"></div> <input type="button" id="print_button" value="Print" onclick="document.getElementById('FILEtoPrint').focus(); document.getElementById('FILEtoPrint').contentWindow.print();" /> </div> <script> function printSome(path){ //传入文件路径 $("#to_print").html('<iframe src='+path+' id="FILEtoPrint"></iframe>'); setTimeout(function(){$("#print_button").click();}, 500); } </script>

web界面添加按钮调用js即可