📄 post.jsp
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<%@ page language="java" import="entity.User" pageEncoding="GBK"%>
<%
User loginUser = (User)session.getAttribute("loginUser");
if(loginUser==null){
request.setAttribute("error_msg","您尚未登录");
response.sendRedirect("index.jsp");
return;
}
String receiveUname = "";
try{
receiveUname = new String( request.getParameter("receiveUname").getBytes("ISO-8859-1") );
}catch(NullPointerException e){
receiveUname = "";
}
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>发短消息</title>
<link rel="stylesheet" type="text/css" href="style/style.css">
<script type="text/javascript">
function check(){
var receiveUname = document.forms[0].receiveUname.value;
var note = document.forms[0].note.value;
var errorMsg= "";
if(receiveUname==""|| receiveUname=="请输入您的名字") {
errorMsg += "作者不能为空";
}
if(note=="") {
errorMsg += "\n内容不能为空";
}
if(note.length>500) {
errorMsg += "\n内容长度不能大于100";
}
if(receiveUname.length>20) {
errorMsg += "\n用户名长度不能大于20";
}
if(errorMsg!=""){
alert(errorMsg);
return false;
}
}
</script>
</head>
<body>
<div align="center">
<%-- 用户信息 --%>
<div style="width:500px">
当前用户 <%=loginUser.getName() %>
<a href="doLogout.jsp">[登出]</a>
<a href="listMsg.jsp">[我的短消息]</a>
</div>
<br/>
<div class="t1">
<br/>
<h2>发短消息</h2>
<div align="left" style="width:400px">
<form action="doPost.jsp" method="post" onsubmit="return check()">
<input type="hidden" name="sendUname" value="<%=loginUser.getName() %>"/>
<div>发送给 <input type="text" name="receiveUname" value="<%=receiveUname==null?"":receiveUname %>" class="input"/></div>
<br/>
<div>短消息</div>
<div style="position:relative ;top:-17px;left:42px"><textarea name="note" cols="40" rows="7"></textarea></div>
<input type="submit" value=" 发 送 " class="btn" style="position:relative ;left:150px"/>
</form>
</div>
</div>
</div>
</body>
</html>
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