修改界面：
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>修改新闻信息</title>
</head>
<body>
<%
Object message = request.getAttribute("message");
if(message!=null && !"".equals(message)){
%>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%} %>
<div align="center">
<h1 style="color: black;">新闻修改</h1>
<a href="Screen.jsp">返回主页</a>
<form action="Servlet?method=update" method="post" onsubmit="return check()">
<div class="a">
新闻标题<input type="text" id="zhuti" name="zhuti"/>
</div>
<div class="a">
<button type="submit" class="b">查 找</button>
</div>
</form>
</div>
</body>
</html>