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编码统一utf-8
文件名：a.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
</head>
<body>
<%
int num = Integer.parseInt(request.getParameter("num"));
out.println(num+"的平方是："+num*num);
%>
</body>
</html>
文件名：b.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
</head>
<body>
<jsp:include page="a.jsp">
<jsp:param value="19" name="num"/>
</jsp:include>
</body>
</html>
文件名：ex201.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
</head>
<body>
<%
Date date = new Date();
int hour = date.getHours();
int minute = date.getMinutes();
int second = date.getSeconds();
if (hour >= 0 && hour < 12) {
out.println("早上好！");
} else if (hour >= 12 && hour < 19) {
out.println("下午好！");
} else {
out.println("晚上好！");
}
%>
</body>
</html>
文件名：test1.jsp
<%@ page contentType="text/html;charset=utf-8" %>
<%
request.setCharacterEncoding("utf-8");
String strUserName = "";
strUserName = (String)request.getParameter("UserID");
if(strUserName.equals("张三")){
out.println("你好" + strUserName);
}else{
out.println("名称错误");
}
%>
<br>姓名：<%=strUserName%><br>
文件名：test2.jsp
<%@ page contentType="text/html;charset=utf-8" %>
<html><body>
<form action= " test1.jsp" method="post">
<p>姓名：<input type="text" size="20" name= "UserID"></p>
<p><input type="submit" value="提 交"> </p>
</form>
</body></html>