📄 topic_add.jsp
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<%@ page contentType="text/html; charset=GBK"%>
<SCRIPT language=JavaScript src="include/check.js" type="text/javascript"></SCRIPT>
<link rel=stylesheet href="include/style.css">
<script language="JavaScript">
function bbsInsert(forum_id){
//输入验证:话题和内容不能为空
if(document.frmAction.title.value == null ||
checkLength(document.frmAction.title.value)<1){
alert('请输入话题!');
return ;
}
if(document.frmAction.content.value == null ||
checkLength(document.frmAction.content.value)<1){
alert('请输入内容!');
return ;
}
//请求提交给TopicServlet
document.frmAction.action="topicservlet?method=topic_add&forum_id=" + forum_id;
document.frmAction.submit();
}
</script>
<%
//防止重复提交,在session中写入一个变量,
//TopicServlet判断该变量是否为空,如果为空,判断为重复提交
//如果不为空,判断是第一次提交,并将该变量从session中删除
session.setAttribute("topic_add", "topic_add");
//记录用户输入
String title = request.getParameter("title");
if(title == null) title = "";
String content = request.getParameter("content");
if(content == null) content = "";
//从request获取讨论区ID和帖子ID
String forum_id = request.getParameter("forum_id");
%>
<html>
<head>
<title>
发表新贴-<%=bbs.Constant.TITLE%>
</title>
</head>
<body bgcolor="#ffffff">
<br>
<br>
<br>
<br>
<FORM method="POST" name="frmAction" >
<center>
<jsp:include page="error_info.jsp">
<jsp:param name="desc" value="topic_add_error" />
</jsp:include>
<table border="1px #76aef0 solid" cellspacing="0" cellpadding="1" align=center bgColor=#E4E8EF>
<tr>
<td>话题:</td>
<td><input type="text" size="80" name="title" value="<%=title%>"/></td>
</tr>
<tr>
<td>内容:</td>
<td>
<textarea name="content" rows=8 cols=80><%=content%></textarea>
</td>
</tr>
<tr>
<td colspan="2">
<center>
<input type="submit" onclick="bbsInsert(<%=forum_id%>);" value="确定" class="button"/>
</center>
</td>
</tr>
</table>
</center>
</FORM>
</body>
</html>
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