jsp页面直接打印table中的内容

在页面中引入

<script>
function doPrint() {

    bdhtml = window.document.body.innerHTML;
    sprnstr = "<!--startprint-->";
    eprnstr = "<!--endprint-->";
    prnhtml = bdhtml.substr(bdhtml.indexOf(sprnstr) + 17);
    prnhtml = prnhtml.substring(0, prnhtml.indexOf(eprnstr));

    //window.document.body.innerHTML =document.getElementById("mainbody").innerHTML; 
    //window.print();

    window.document.body.innerHTML = prnhtml;
    window.print();
    window.document.body.innerHTML = bdhtml;
}
</script>

在需要打印的地方，比如table

<!--startprint-->
<table>

</table>
<!--endprint--> 
<input type="button" onclick="doPrint()" value="打印"/>

就会打印table中的内容