Html File
<html>
<head>
<title>Calculation Grade</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<div>Calculation Grade</div>
<form method="post" action="4_3_ProcessingFile.jsp">
<table cellpadding="3" cellspacing="0" border="0">
<tr>
<td>Score</td>
<td><input type="text" name="score" size="25"></td>
</tr>
<tr>
<td colspan="2"><input type="submit" value="OK" ></td>
</tr>
</table>
</form>
</body>
</html>
JSP File
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Grade</title>
</head>
<body>
<center><h1>Grade</h1></center>
<%
//รับค่าที่ส่งมาจากแบบฟอร์ม
String S = request.getParameter("score");
int sc= Integer.parseInt(S);
String Grade;
if(sc>=80)
{
out.println(Grade = "A");
}
else if(sc >=70)
{
out.println(Grade="B");
}
else if(sc >= 60)
{
out.println(Grade="C");
}
else if(sc>=50)
{
out.println(Grade= "D");
}
else if(sc >=0)
{
out.println(Grade ="F");
}
return Grade;
%>
<table cellpadding="2" cellspacing="0" border="1">
<tr> <td> Grade </td> <td> <%=Grade%> </td> </tr>
</table>
</body>
</html>
ช่วยหน่อยค่ะ มึนตึ้บ หัวทึบ 5555 JSP
<html>
<head>
<title>Calculation Grade</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<div>Calculation Grade</div>
<form method="post" action="4_3_ProcessingFile.jsp">
<table cellpadding="3" cellspacing="0" border="0">
<tr>
<td>Score</td>
<td><input type="text" name="score" size="25"></td>
</tr>
<tr>
<td colspan="2"><input type="submit" value="OK" ></td>
</tr>
</table>
</form>
</body>
</html>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Grade</title>
</head>
<body>
<center><h1>Grade</h1></center>
<%
//รับค่าที่ส่งมาจากแบบฟอร์ม
String S = request.getParameter("score");
int sc= Integer.parseInt(S);
String Grade;
if(sc>=80)
{
out.println(Grade = "A");
}
else if(sc >=70)
{
out.println(Grade="B");
}
else if(sc >= 60)
{
out.println(Grade="C");
}
else if(sc>=50)
{
out.println(Grade= "D");
}
else if(sc >=0)
{
out.println(Grade ="F");
}
return Grade;
%>
<table cellpadding="2" cellspacing="0" border="1">
<tr> <td> Grade </td> <td> <%=Grade%> </td> </tr>
</table>
</body>
</html>