直接上代码，浏览器自带打印的功能。
<%--
Created by IntelliJ IDEA.
User: Administrator
Date: 2019/12/5
Time: 0:07
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<script>
//直接在本窗口进行打印
function windowprint() {
var f = document.getElementById("printdiv");
f.style.display = "";
window.print();
f.style.display = "none";
}
//新开一个窗口实现打印
function myPrint(obj){
var newWindow=window.open("打印窗口","_blank");
var docStr = obj.innerHTML;
newWindow.document.write(docStr);
newWindow.document.close();
newWindow.print();
newWindow.close();
}
</script>
<title>$Title$</title>
</head>
<body>
<a onclick="windowprint();" href="javascript:void(0);">点击打印</a>
<div id="printdiv" style="display:none;">
<table id="tableid" class="main" cellspacing="0" cellpadding="0" border="1"
bordercolor="#000000" align="center" width="800px;">
/****** 这里写表格，或者其他任意的内容 ******/
</table>
</div>
</body>
</html>
