<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>ex03_parameter</title>
<style type="text/css">

table, tr, td {
	border: 1px solid gray;
	border-collapse: collapse;
}
.title {
	width: 100px;
}
td {
	padding: 10px;
	font-size: 24px;
	text-align: center;
}
input[type=text]{
	height: 26px;
	font-size: 24px;
}

</style>
</head>
<body>
	<h1>내용을 작성하세요</h1>
	<form action="<http://localhost:8080/03_Servlet/paramServlet>" method="get">
		<table>
			<tr>
				<td class="title">이름</td>
				<td><input type="text" id="user_name" name="userName"/></td>
			</tr>
			<tr>
				<td class="title">나이</td>
				<td><input type="text" id="user_age" name="userAge"/></td>
			</tr>
			<tr>
				<td colspan="2">
					<input type="submit" value="완료"/> &nbsp; <input type="reset" value="취소"/>
				</td>
			</tr>
		</table>
	</form>
</body>
</html>

package ex03;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class ParamServlet extends HttpServlet {

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
		// 웹 브라우저에서 전송된 데이터 인코딩 설정
		request.setCharacterEncoding("UTF-8");
		
		// 전송 데이터
		// - getParameter() 메서드를 사용해서 <input> 태그의 name 속성값으로 전달된 value를 가져옵니다.
		String name = request.getParameter("userName");
		String s_age = request.getParameter("userAge");
		int i_age = Integer.parseInt(s_age);
		
		// 응답
		response.setContentType("text/html; charset=UTF-8");
		PrintWriter out = response.getWriter();
		
		out.println("<html>");
		
		out.println("<head>");
		out.println("<title> 결 과 </title>");
		out.println("</head>");
		
		out.println("<body>");
		out.println(name+"님의 나이" + i_age + "세</br><br/>");
		if(i_age >19) 
			out.println("성인");
		else
			out.println("미성년자");	
		out.println("</body>");
		
		out.println("</html>");
		
	}

}