기타/Servlet
서블릿(servlet) 간단한 예제
공부하는리아
2020. 12. 7. 16:20
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="./xxxx" method="post">
이름: <input type="text" name="name" /> <br/>
아이디: <input type="text" name="id" /> <br/>
비밀번호: <input type="text" name="pw" /> <br/>
취미<br/>
<input type="checkbox" name="hobby" value="요리" />요리
<input type="checkbox" name="hobby" value="달리기" />달리기
<input type="checkbox" name="hobby" value="수영" />수영
<input type="checkbox" name="hobby" value="낮잠" />낮잠 <br/>
전공 <br/>
<input type="radio" name="major" value="국어"/>국어
<input type="radio" name="major" value="영어" checked="checked"/>영어
<input type="radio" name="major" value="수학"/>수학
<input type="radio" name="major" value="디자인"/>디자인 <br/>
<select name="protocol">
<option value="http">http</option>
<option value="ftp" selected="selected">ftp</option>
<option value="smtp">smtp</option>
<option value="pop">pop</option>
</select><br/>
<input type="submit" value="전송"/>
<input type="reset" value="초기화"/>
</form>
</body>
</html>package com.vison.servletex;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Arrays;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class Testxxx
*/
@WebServlet("/xxxx")
public class Testxxx extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public Testxxx() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
response.setContentType("text/html; charset=UTF-8");
String name = request.getParameter("name");
String id = request.getParameter("id");
String pw = request.getParameter("pw");
String [] hobby = request.getParameterValues("hobby");
String major = request.getParameter("major");
String protocol = request.getParameter("protocol");
PrintWriter out = response.getWriter();
out.println("이름: " + name + "<br/>");
out.println("아이디: " + id + "<br/>");
out.println("패스워드: " + pw + "<br/>");
out.println("취미: " + Arrays.toString(hobby) + "<br/>");
out.println("전공: " + major + "<br/>");
out.println("프로토콜: " + protocol + "<br/>");
out.close();
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
방식은 jsp와 비슷하다.
html에서 name으로 설정한 값들을 String을 이용해 변수로 만들어 준다.
예외로 checkbox만 복수선택이 가능해 String [] 배열로 가져온다.
출력할 때는 배열을 Arrats.toStgin(배열이름)으로 해준다.
다른 것 처럼 변수값만 가져오면 주소로 출력이 되니 주의해주자