3과목 평균구하기 프로세스
2023. 1. 17. 12:03ㆍJAVA
html form 태그 작성
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="sc.do" method="post">
<table>
<thead>
<tr>
<th>과목</th>
<th>점수</th>
</tr>
</thead>
<tbody>
<tr>
<td>국어</td>
<td><input type="text" name="kor"></td>
</tr>
<tr>
<td>영어</td>
<td><input type="text" name="eng"></td>
</tr>
<td>수학</td>
<td><input type="text" name="mat"></td>
</tr>
<tr>
<td><input type="submit" value="전송"></td>
<td><input type="reset" value="취소"></td>
</tr>
</tbody>
</table>
</form>
</body>
</html>컨트롤러에 로직처리
package ez.web.controller;
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("/sc.do")
public class ScoreController extends HttpServlet {
protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//1.클라이언트의 요청정보 수집
int kor = Integer.parseInt(request.getParameter("kor"));
int eng = Integer.parseInt(request.getParameter("eng"));
int mat = Integer.parseInt(request.getParameter("mat"));
//2. 업무로직(비즈니스 로직) 처리
int total = kor + eng + mat;
double avg = total / 3.0;
String strAvg = String.format("%.2f",avg);
//3. 응답 로직 처리 (Presentation logic ==> view(jsp))
response.setContentType("text/html;charset=utf-8");
PrintWriter out = response.getWriter();
out.println("총점 : " + total + "<br>");
out.println("평균 : " + strAvg + "<br>");
}
}
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