package ex02;
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("/getTest")
public class GetTestServlet extends HttpServlet{
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
// TODO Auto-generated method stub
// super.doGet(req, resp);
//요청객체에 대해 한글깨짐 방지..
req.setCharacterEncoding("UTF-8");
//응답객체도 응답데이터의 타입과 한글인코딩 지정해야 함.
resp.setContentType("text/html; charset=utf-8");
//이 doGet()메소드의 파라미터가 2개 존재..[요청객체 req, 응답객체 resp]
//사용자가 URL 뒤에 ?하고 보낸 요청 파라미터(데이터)를 받기 [PHP $_GET 작업].. 요청객체에게 ..
String title= req.getParameter("title");
System.out.println("GET방식으로 전달된 title 데이터 : " +title);
String message= req.getParameter("msg");
System.out.println("GET방식으로 전달된 msg 데이터 : " +message);
//데이터가 사용자가 볼 수 있도록 응답해야 함. response [php echo 기능 ]
//이 doget()메소드의 2번째 파라미터의 응답객체 resp를 통해..
//문자 스트림응로 출력데이터를 내보내는 것이기에 ..
PrintWriter writer= resp.getWriter();
//사용자가 보는 화면은 웹 브라우저임. 이 브라우저는 HTML 언어 체계를 따름.. 그래서 출력도 thml로 해야함.
writer.println("<!DOCTYPE html>");
writer.println("<html>");
writer.println("<body>");
writer.println("<h4>");
writer.println(title);
writer.println("</h4>");
writer.println("<p>");
writer.println(message);
writer.println("</p>");
writer.println("</body>");
writer.println("</html>");
}
}
package ex02;
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("/postTest")
public class PostTestServlet extends HttpServlet{
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
// TODO Auto-generated method stub
// super.doPost(req, resp);
//요청객체의 한글 깨짐 방지
req.setCharacterEncoding("utf-8");
//응답객체의 mime type과 인코딩
resp.setContentType("text/html; charset=utf-8");
//POST방식으로 전달된 요청 파라미터를 요청객체로 부터 받아오기
String userId= req.getParameter("user_id");
String userPw= req.getParameter("user_pw");
//같은 name속성으로 여러개가 전달된다면 .. 이를 배열로 받아야함. 메소드이름이 다름..!!
String[] fruits= req.getParameterValues("fruits");
//실무였다면 이 데이터를 DB와 연동하는 작업을 했음. 연습이라 그냥 출력.
PrintWriter writer= resp.getWriter();
writer.println("<!DOCTYPE html>");
writer.println("<html>");
writer.println("<body>");
writer.println("<h4>");
writer.println(userId);
writer.println("</h4>");
writer.println("<p>");
writer.println(userPw);
writer.println("</p>");
writer.println("<p>");
for(String f: fruits) {
writer.println(f+",");
}
writer.println("</p>");
writer.println("</body>");
writer.println("</html>");
}
}
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<h2>Ex01 Servlet Test</h2>
<fieldset>
<legend>GET METHOD TEST</legend>
<form action="getTest" method="get" enctype="application/x-www-form-urlencoded">
TITLE: <input type="text" name="title"> <br>
MESSAGE: <input type="text" name="msg"> <br>
<input type="submit" value="전송">
</form>
</fieldset>
<hr>
<fieldset>
<legend> post method test</legend>
<form action="postTest" method="post" enctype="application/x-www-form-urlencoded">
<p>아이디 : <input type="text" name="user_id"></p>
<p>비밀번호 : <input type="password" name="user_pw"></p>
<p>
<input type="checkbox" name="fruits" value="apple">사과
<input type="checkbox" name="fruits" value="orange">오렌지
<input type="checkbox" name="fruits" value="banana">바나나
</p>
<p><input type="submit" value="로그인"></p>
</form>
</fieldset>
</body>
</html>
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package ex02;
import java.io.IOException;
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("/both")
public class BothTestServlet extends HttpServlet{
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
// TODO Auto-generated method stub
// super.doGet(req, resp);
doHandle(req,resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
// TODO Auto-generated method stub
// super.doPost(req, resp);
doHandle(req,resp);
}
void doHandle(HttpServletRequest req, HttpServletResponse resp) {
//do something..
}
}
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