JSP实现留言板
submitMsg.jsp
代码语言：javascript复制<%@page import="java.util.ArrayList"%>
<%@page import="bean.Message"%>
<%@page import="java.util.List"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="submitMsg.jsp" method="post">
<p>请输入姓名
<input type="text" name="nikename"><p/>
<p>请输入标题
<input type="text" name="title"><p/>
<p>请输入内容
<textarea rows="10" cols="36" name="message"></textarea><p/>
<input type="submit" value="提交" name="submit">
</form>
<form action="showMessage.jsp" method="post">
<input type="submit" value="查看" name="look">
</form>
<%
List<Message> list = (List<Message>)application.getAttribute("allMsgs");
String nikename=request.getParameter("nikename");
String title=request.getParameter("title");
String message=request.getParameter("message");
Message msg=new Message(nikename,title,message);
if(nikename!=null && title!=null && message!=null){
if(list==null){
list=new ArrayList<>();
list.add(msg);
}else{
list.add(msg);
}
application.setAttribute("allMsgs", list);
}
%>
</body>
</html>showMessage.jsp
代码语言：javascript复制<%@page import="bean.Message"%>
<%@page import="java.util.List"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
List<Message> list = (List<Message>)application.getAttribute("allMsgs");
if(list==null){
out.print("暂无数据！");
}else{
for(int i=0;i<list.size();i ){
%>
<ul>
<li>NO.<%=i 1 %></li>
<li>姓名：<%=list.get(i).getNikename() %></li>
<li>标题：<%=list.get(i).getTitle() %></li>
<li>内容：<%=list.get(i).getMessage() %></li>
</ul>
<%
}
}
%>
</body>
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