<%   
request.setCharacterEncoding("GBK");   
String   action   =   request.getParameter("action");//接收下面的form提交的action   
response.sendRedirect("article.jsp");   
%>   

//下面是javascript代码   
<script       language="JavaScript1.2"       type="text/javascript">   
<!--   
function       isEmpty()   
{   
var       title       =       document.postForm.title.value;   
var       cont       =       document.postForm.cont.value;   
if(title=="")   
{   
alert("主题不能为空!!");   
return       false;   
}   
if(title!=""       &&       cont!="")   
{   
alert("提交成功");   
return       true;   
}   
}   
//-->
</script>

//下面是form中的代码   
<form           name="postForm"       action="post.jsp"       method="post"   onsubmit="return   isEmpty()">           
//post.jsp是本身，就是form表单提交给本身       
<input       type="hidden"       name="action"       value="post">   
<table       align="center"       border="1"       width="100%">   
                    <tr>   
                            <td> 
                                    <input   type="text"   name="title"/>       
                                                      </td>   
                    </tr>   
                            <tr>   
<td>   
                                        <textarea       rows="15"       cols="150"       name="cont">   </textarea&g