단순 코드 기록/Spring

Spring_ViewerParsing

일일일코_장민기 2024. 2. 13. 11:16
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Controller
package com.app.test;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class TestController {

	@RequestMapping(value =  "/login", method = RequestMethod.GET)
	public String main(LoginDTO dto) {
		System.out.println("login - loginForm - GET" + dto);
		return "loginForm";
	}

	
	@RequestMapping(value =  "/login1", method = RequestMethod.POST)
	public String login(LoginDTO dto) {							//자동으로 request.SetAttribute("loginDTO", "dto")
		System.out.println("login1 - loginForm - POST" +dto);	
		return "login1";										//자동으로 데이터 fowarding
	}
	
	@RequestMapping(value =  "/login2", method = RequestMethod.POST)
	public ModelAndView login2(LoginDTO dto) {					
		ModelAndView mav = new ModelAndView();
		mav.addObject("login", dto);
		mav.setViewName("login2");
		System.out.println("login2 - loginForm - POST" +dto);	
		return mav;										//자동으로 데이터 fowarding
	}
	
	@RequestMapping(value =  "/login3", method = RequestMethod.POST)
	public String login3(@ModelAttribute("xxx") LoginDTO dto) {	//dto의 키값이 xxx					
		System.out.println("login3 - loginForm - POST" +dto);	
		return "login3";										//자동으로 데이터 fowarding
	}
	
	
}

 

 

login2_jsp
<%@page import="com.app.test.LoginDTO"%>
<%@ 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>
out.print: 
<%
	LoginDTO dto = (LoginDTO)request.getAttribute("loginDTO"); 
	String name = dto.getUserid();
	out.print(name);
%><br>

getAttribute:	<%= dto.getUserid() + "\t" + dto.getPasswd()%><br>

getParameter:	<%= request.getParameter("userid") + "\t" + request.getParameter("passwd") %><br>

EL: ${login} / ${login.userid} / ${login.passwd}

</body>
</html>

 

 

login3_jsp

 

<%@page import="com.app.test.LoginDTO"%>
<%@ 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>

out.print:
<%
	LoginDTO dto = (LoginDTO)request.getAttribute("xxx"); 
	String name = dto.getUserid();
	out.print(name);
%><br>

getAttribute:	<%= dto.getUserid() + "\t" + dto.getPasswd()%><br>

getParameter:	<%= request.getParameter("userid") + "\t" + request.getParameter("passwd") %><br>

4번: ${login}

</body>
</html>

 

 

 

============================================================================================

 

Controller2

 

package com.app.test;

import java.util.ArrayList;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class TestController {

	@RequestMapping(value =  "/", method = RequestMethod.GET)
	public String main() {
		System.out.println("main - loginForm - GET");
		return "loginForm";
	}

	
	@RequestMapping(value =  "/aaa", method = RequestMethod.GET)
	public ModelAndView xxx(ArrayList<String> list) {
			list.add("Hong1");
			list.add("Hong2");

		ModelAndView mav = new ModelAndView();
			mav.addObject("list",list);							//JSP에서 사용할 수 있는 KV
			mav.setViewName("main");							//보낼 JSP파일 명
		System.out.println("login - loginForm - GET");
		return mav;
	}
	
	@RequestMapping(value =  "/bbb", method = RequestMethod.GET)
	public String xxx2(@ModelAttribute("xxx") ArrayList<String> list) {
			list.add("Lee1");
			list.add("Lee2");

		System.out.println("login - loginForm - GET");
		return "main2";
	}
}

 

main

 

<% List<String> list = (List<String>)request.getAttribute("list"); %>

EL:	${list}<br>
<%= list %>

 

main2

 

<% List<String> list = (List<String>)request.getAttribute("xxx"); %>

el tag: ${xxx}2<br>
request.getAttribute: <%= list %>

 

Controller3_Get
package com.app.test;

import java.util.ArrayList;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class TestController {

	@RequestMapping(value =  "/login", method = RequestMethod.GET)
	public String main(LoginDTO dto) {
		System.out.println("login - loginForm - GET" + dto);
		return "loginForm";
	}
	
	@ModelAttribute("xxx")										//리턴되는 객체에 xxx키 값 부여(이 객체를 다른 함수에서 사용 가능)
	public ArrayList<String> getList() {							//자동으로 request.SetAttribute("loginDTO", "dto")
		System.out.println("login1 - loginForm - POST");	
		ArrayList<String> list = new ArrayList<String>();
			list.add("hong1");
			list.add("hong2");
		return list;										//자동으로 데이터 fowarding
	}
	
	@RequestMapping(value = "/aaa")
	public String aaa(@ModelAttribute("xxx") ArrayList<String> list) {
		System.out.println("aaa 추가요청 작업");
		list.add("aaa");
		return "main2";	//키:	xxx
	
	}
}

 

 

Controller_Model
package com.app.test;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class TestController {

	@RequestMapping(value =  "/xxx", method = RequestMethod.GET)//***************************************
	public String xxx(Model m) {
		m.addAttribute("username", "홍길동");						//request.setAttribute와 동일(req.getAtt로 사용)
		m.addAttribute("login", new LoginDTO("aaa","111"));		//login key에 object 저장
		
		System.out.println("login - loginForm - GET - MODEL");
		return "main";
	}
	
	@RequestMapping(value =  "/xxx2", method = RequestMethod.GET)
	public String xxx2(Map<String, String> map) {

		map.put("address", "서울");
		map.put("username", "홍길동");
		
		System.out.println("login - loginForm - GET - MODEL");
		return "main2";
	}
	
	@RequestMapping(value =  "/xxx3", method = RequestMethod.GET)
	public String xxx3(HttpServletRequest request) {
		request.setAttribute("username", "이순신");
		request.setAttribute("address", "경기");
		
		System.out.println("login - loginForm - GET - MODEL");
		return "main3";
	}
	
}

 

Main1
<%@page import="com.app.test.LoginDTO"%>
<%@ 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>
out.pring: 
<%
	LoginDTO dto = (LoginDTO)request.getAttribute("login"); 
	String name = dto.getUserid();
	out.print(name);
%><br>

getAttribute: <%= dto %><br>
EL태그: ${login}<br>
EL태그: ${login.userid} / ${login.passwd} <br>
EL태그: ${username}


</body>
</html>
Main2

 

<%@page import="com.app.test.LoginDTO"%>
<%@ 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>

getAttribute: <%= request.getAttribute("address") %> / 
getAttribute: <%= request.getAttribute("username") %><br>

EL태그: ${address} / ${username} <br>



</body>
</html>

 

Main3

 

<%@page import="com.app.test.LoginDTO"%>
<%@ 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>

getAttribute: <%= request.getAttribute("address") %> / 
getAttribute: <%= request.getAttribute("username") %><br>

EL태그: ${address} / ${username} <br>



</body>
</html>

 

 

 

 

 

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