Spring boot 기초 2

limchard·2023년 11월 1일
GETLomBokPOSTSpringbootjspmappingserver.port
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spring boot

목록 보기
3/6

Mapping을 이용하여 띄우기

초기설정

application.properties

  • 기본적으로 port 주소 설정해주자.
  • jsp 파일을 사용하기 위해 spring framework의 servlet-context와 같이 설정해줘야 한다.
  • 새로 고침 해주는 것도 반드시 기입해주자.
# 이게 주석이다
# server.port 먼저 해줘야한다. url port 지정하는 거니까..
server.port=9006

# 여기서 jsp 파일을 쓴다고 지정해줘야 한다.
# jsp setting
spring.mvc.view.prefix=/WEB-INF/today/  #기본실행 폴더 주소 설정
spring.mvc.view.suffix=.jsp  # 어디서든 jsp파일 호출 가능. .jsp 생략가능	
spring.devtools.livereload.enabled=true
# spring.devtools.livereload.enabled=true : 자동 새로고침 해주는 것.

SpringBootEx2Application.java

  • 사용 package 지정
package boot.mvc.ex2;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;

@SpringBootApplication
@ComponentScan({"boot.*"}) // 패키징 등록 // 여기서도 와일드카드 가능함.
public class SpringBootEx2Application {

	public static void main(String[] args) {
		SpringApplication.run(SpringBootEx2Application.class, args);
	}

}

예제 진행

초기화면 실행

TestController.java

package boot.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class TestController {
	@GetMapping("/")
	public ModelAndView list() {
		
		ModelAndView model=new ModelAndView();
		
		model.addObject("name", "이효리");
		model.addObject("addr", "서울시 강서구");
		
		model.setViewName("list");
		return model;
	}
}

list.jsp

  • 기본 경로설정. localhost:9006 입력하면 첫 page
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link href="https://fonts.googleapis.com/css2?family=Bagel+Fat+One&family=Dongle:wght@300&family=East+Sea+Dokdo&family=Gamja+Flower&family=Gowun+Dodum&family=Nanum+Gothic+Coding&family=Nanum+Pen+Script&family=Orbit&display=swap" rel="stylesheet">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.10.5/font/bootstrap-icons.css">
<script src="https://code.jquery.com/jquery-3.7.0.js"></script>
<title>Insert title here</title>
</head>
<body>
	<h3 class="alert alert-warning">
		이름: ${name } <br>
		주소: ${addr }
	</h3>
</body>
</html>

예제2

HomeController.java

package boot.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;

@Controller
public class HomeController {

	@GetMapping("/sist/home")
	public String home() {
		
		return "home";
	}	
}

home.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link href="https://fonts.googleapis.com/css2?family=Bagel+Fat+One&family=Dongle:wght@300&family=East+Sea+Dokdo&family=Gamja+Flower&family=Gowun+Dodum&family=Nanum+Gothic+Coding&family=Nanum+Pen+Script&family=Orbit&display=swap" rel="stylesheet">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.10.5/font/bootstrap-icons.css">
<script src="https://code.jquery.com/jquery-3.7.0.js"></script>
<title>Insert title here</title>
</head>
<body>
	<h1>폼태그 읽기</h1>
	<ul>
		<li>
			<a href="form1">폼데이터 각각 읽기</a>
		</li>
		<li>
			<a href="form2">폼데이터 DTO 읽기</a>
		</li>
		<li>
			<a href="form3">폼데이터 Map 읽기</a>
		</li>
	</ul>
</body>
</html>

data 각각 읽어오기

입력form 띄우기

FormContoller.java

@Controller
public class FormController {

	@GetMapping("/sist/form1")
	public String form1() {
		return "form/form1";
	}

/form/form1.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link href="https://fonts.googleapis.com/css2?family=Bagel+Fat+One&family=Dongle:wght@300&family=East+Sea+Dokdo&family=Gamja+Flower&family=Gowun+Dodum&family=Nanum+Gothic+Coding&family=Nanum+Pen+Script&family=Orbit&display=swap" rel="stylesheet">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.10.5/font/bootstrap-icons.css">
<script src="https://code.jquery.com/jquery-3.7.0.js"></script>
<title>Insert title here</title>
</head>
<body>
	<h1>폼 데이터 각각 읽기</h1>
	<form action="read1" method="post">
		<table class="table table-bordered" style="width: 400px;">
			<tr>
				<th>이름</th>
				<td>
					<input type="text" name="irum" class="form-control">
				</td>
			</tr>
			<tr>
				<th>자바점수</th>
				<td>
					<input type="text" name="java" class="form-control">
				</td>
			</tr>
			<tr>
				<th>스프링점수</th>
				<td>
					<input type="text" name="spring" class="form-control">
				</td>
			</tr>
			<tr>
				<td colspan="2" align="center">
					<button type="submit" class="btn btn-info">서버에 전송</button>
				</td>
			</tr>
		</table>
	
	</form>
</body>
</html>

입력 값 받아오기

HomeContoller.java

// 값 읽기 
	@PostMapping("/sist/read1")
	public String read1(@RequestParam String irum,
			@RequestParam int java,
			@RequestParam int spring,
			Model model) {
		
		model.addAttribute("irum", irum);
		model.addAttribute("java", java);
		model.addAttribute("spring", spring);
				
		return "result/result1";
	}

result1.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link href="https://fonts.googleapis.com/css2?family=Bagel+Fat+One&family=Dongle:wght@300&family=East+Sea+Dokdo&family=Gamja+Flower&family=Gowun+Dodum&family=Nanum+Gothic+Coding&family=Nanum+Pen+Script&family=Orbit&display=swap" rel="stylesheet">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.10.5/font/bootstrap-icons.css">
<script src="https://code.jquery.com/jquery-3.7.0.js"></script>
<title>Insert title here</title>
</head>
<body>
<p class="alert alert-warning" style="margin: 20px 20px;">
	이름: ${irum } <br>
	자바점수: ${java } <br>
	스프링점수: ${spring }<br>
	총점: ${java+spring }<br>
	평균: ${(java+spring)/2 }<br>
</p>
</body>
</html>

data Dto로 읽어오기

PersonDto.java

  • lombok을 이용하기 위해 @Data 사용
package boot.dto;

import lombok.Data;

@Data
public class PersonDto {

	private String name;
	private String addr;
	private String hp;	
}

입력 form 띄우기

FormContoller.java

@GetMapping("/sist/form2")
	public String form2() {
		return "form/form2";
	}

form2.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link href="https://fonts.googleapis.com/css2?family=Bagel+Fat+One&family=Dongle:wght@300&family=East+Sea+Dokdo&family=Gamja+Flower&family=Gowun+Dodum&family=Nanum+Gothic+Coding&family=Nanum+Pen+Script&family=Orbit&display=swap" rel="stylesheet">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.10.5/font/bootstrap-icons.css">
<script src="https://code.jquery.com/jquery-3.7.0.js"></script>
<title>Insert title here</title>
</head>
<body>
	<h1>폼 데이터 DTO 읽기</h1>
	<form action="write2" method="post">
		<table class="table table-bordered" style="width: 400px;">
			<tr>
				<th>이름</th>
				<td>
					<input type="text" name="name" class="form-control">
				</td>
			</tr>
			<tr>
				<th>주소</th>
				<td>
					<input type="text" name="addr" class="form-control">
				</td>
			</tr>
			<tr>
				<th>연락처</th>
				<td>
					<input type="text" name="hp" class="form-control">
				</td>
			</tr>
			<tr>
				<td colspan="2" align="center">
					<button type="submit" class="btn btn-info">서버에 전송</button>
				</td>
			</tr>
		</table>
	
	</form>
</body>
</html>

Dto값 받아오기

FormContoller.java

	@PostMapping("/sist/write2")
	public String read2(@ModelAttribute("pdto") PersonDto pdto) {
		
		return "result/result2";
	}

result2.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link href="https://fonts.googleapis.com/css2?family=Bagel+Fat+One&family=Dongle:wght@300&family=East+Sea+Dokdo&family=Gamja+Flower&family=Gowun+Dodum&family=Nanum+Gothic+Coding&family=Nanum+Pen+Script&family=Orbit&display=swap" rel="stylesheet">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.10.5/font/bootstrap-icons.css">
<script src="https://code.jquery.com/jquery-3.7.0.js"></script>
<title>Insert title here</title>
</head>
<body>
<p class="alert alert-danger" style="margin: 20px 20px;">
	이름: ${pdto.name } <br>
	주소: ${pdto.addr } <br>
	연락처: ${pdto.hp }<br>

</p>
</body>
</html>

data Map으로 읽어오기

form 띄우기

FormContoller.java

@GetMapping("/sist/form3")
	public String form3() {
		return "form/form3";
	}

form3.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link href="https://fonts.googleapis.com/css2?family=Bagel+Fat+One&family=Dongle:wght@300&family=East+Sea+Dokdo&family=Gamja+Flower&family=Gowun+Dodum&family=Nanum+Gothic+Coding&family=Nanum+Pen+Script&family=Orbit&display=swap" rel="stylesheet">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.10.5/font/bootstrap-icons.css">
<script src="https://code.jquery.com/jquery-3.7.0.js"></script>
<title>Insert title here</title>
</head>
<body>
	<h1>폼 데이터 Map으로 읽기</h1>
	<form action="myread" method="post">
		<table class="table table-bordered" style="width: 400px;">
			<tr>
				<th>이름</th>
				<td>
					<input type="text" name="name" class="form-control">
				</td>
			</tr>
			<tr>
				<th>혈액형</th>
				<td>
					<input type="text" name="blood" class="form-control">
				</td>
			</tr>
			<tr>
				<th>나이</th>
				<td>
					<input type="text" name="age" class="form-control">
				</td>
			</tr>
			<tr>
				<td colspan="2" align="center">
					<button type="submit" class="btn btn-info">서버에 전송</button>
				</td>
			</tr>
		</table>
	
	</form>
</body>
</html>

값 읽어오기

FormContoller.java

  • map으로 읽을경우 폼의 name이 key값으로 받고, 입력값은 value값으로 받는다.
		@PostMapping("/sist/myread")
		public String read3(Model model,@RequestParam Map<String, String>map) {
			
			model.addAttribute("name", map.get("name"));
			model.addAttribute("blood", map.get("blood"));
			model.addAttribute("age", map.get("age"));
			
			return "result/result3";
		}

result3.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link href="https://fonts.googleapis.com/css2?family=Bagel+Fat+One&family=Dongle:wght@300&family=East+Sea+Dokdo&family=Gamja+Flower&family=Gowun+Dodum&family=Nanum+Gothic+Coding&family=Nanum+Pen+Script&family=Orbit&display=swap" rel="stylesheet">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.10.5/font/bootstrap-icons.css">
<script src="https://code.jquery.com/jquery-3.7.0.js"></script>
<title>Insert title here</title>
</head>
<body>
<p class="alert alert-danger" style="margin: 20px 20px;">
	*** form3 결과값 보기 *** <br>
	이름: ${name } <br>
	혈액형: ${blood } <br>
	나이: ${age }<br>
</p>
</body>
</html>

profile
limchard
java를 잡아...... 하... 이게 맞나...
이전 포스트

Spring boot 기초

다음 포스트

Spring boot JPA 활용하기

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