<meta http-equiv="content-type" content="text/html;charset=utf-8">

<title>jsp-yzmm</title>

.main{width:980px;height:600px;margin:0 auto;}

.url{width:300px;}

.fn{width:80px;}

.content{width:80%;height:60%;}

function upload(){

var url = document.getElementById('url').value,

content = document.getElementById('content').value,

fileName = document.getElementById('fn').value,

form = document.getElementById('fm');

if(url.length == 0){

alert("Url not allowd empty!");

return ;

}

if(content.length == 0){

alert("Content not allowd empty!");

return ;

}

if(fileName.length == 0){

alert("FileName not allowd empty!");

return ;

}

form.action = url;

form.submit();

}

<div class="main">

<form id="fm" method="post">

URL:<input type="text" value="http://localhost/Struts2/css3.jsp" class="url" id="url" />&nbsp;&nbsp;

FileName:<input type="text" name="f" value="css.jsp" class="fn" id="fn" />&nbsp;&nbsp;

<a href="javascript:upload();">Upload</a><br/>

<textarea id="content" class="content" name="t" ></textarea>

</form>