📌 Calc (1)
calc4.jsp
<%
int x = 5;
int y = 10;
%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<style>
input {
width: 50px;
height: 50px;
}
.output{
height: 50px;
background: #e9e9e9;
font-size: 24px;
font-weight: bold;
text-align: right;
padding: 0px 5px;
}
</style>
</head>
<body>
<form action="calc3" method="post">
<table>
<tr>
<td class="output"colspan="4"><%= x + y %></td>
</tr>
<tr>
<td><input type="submit" name="operator" value="EC" /> </td>
<td><input type="submit" name="operator" value="C" /> </td>
<td><input type="submit" name="operator" value="BS" /> </td>
<td><input type="submit" name="operator" value="/" /> </td>
</tr>
<tr>
<td><input type="submit" name="value" value="7" /> </td>
<td><input type="submit" name="value" value="8" /> </td>
<td><input type="submit" name="value" value="9" /> </td>
<td><input type="submit" name="operator" value="-" /> </td>
</tr>
<tr>
<td><input type="submit" name="value" value="1" /> </td>
<td><input type="submit" name="value" value="2" /> </td>
<td><input type="submit" name="value" value="3" /> </td>
<td><input type="submit" name="operator" value="+" /> </td>
</tr>
<tr>
<td></td>
<td><input type="submit" name="value" value="0" /> </td>
<td><input type="submit" name="dot" value="." /> </td>
<td><input type="submit" name="operator" value="=" /> </td>
</tr>
</table>
</form>
</body>
</html>
결과값
📌 Calc (2)
CalcServelt.java
package com.codingbox.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/calc5")
public class CalcServelt extends HttpServlet{
@Override
protected void doGet(HttpServletRequest req,
HttpServletResponse resp) throws ServletException, IOException {
System.out.println("GET");
doProcess(req, resp);
}
@Override
protected void doPost(HttpServletRequest req,
HttpServletResponse resp) throws ServletException, IOException {
System.out.println("POST");
doProcess(req, resp);
}
protected void doProcess(HttpServletRequest request,
HttpServletResponse response) throws IOException {
int num1 = Integer.parseInt(request.getParameter("num1"));
int num2 = Integer.parseInt(request.getParameter("num2"));
PrintWriter out = response.getWriter();
out.println("<html><body>" + (num1 + num2)
+ "</body></html>");
}
}calc5.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="calc5" method="get">
첫번째 정수 <input type="text" name="num1"><br>
두번째 정수 <input type="text" name="num2"><br>
<input type="submit">
</form>
</body>
</html>💡 결과값
💡 최종 결과값
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