스프링 05. Service, Controller 클래스와 VIew 만들기

Posted on: 2020년 06월 21일 2020년 06월 21일
Categories: Spring Framework, 강의자료

참조 : https://github.com/kwj1270

Service 클래스 만들기

/bookapp 위치에 service/book 폴더 생성

BookService 클래스 생성

package krco.moak.bookapp.service.book;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import krco.moak.bookapp.dao.book.BookDAO;
import krco.moak.bookapp.dto.book.Book;

@Service
public class BookService {

	@Autowired
	BookDAO dao;

	public int insert(Book dto) {
		return dao.insert(dto);
	}

	public int update(Book dto) {
		return dao.update(dto);
	}

	public int delete(Book dto) {
		return dao.delete(dto);
	}

	public Book getOne(Book dto) {
		return dao.getOne(dto);
	}

	public List<Book> getAll() {
		return dao.getAll();
	}
}

package krco.moak.bookapp.service.book;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

import krco.moak.bookapp.dao.book.BookDAO;

import krco.moak.bookapp.dto.book.Book;

@Service

public class BookService {

@Autowired

BookDAO dao;

public int insert(Book dto) {

return dao.insert(dto);

}

public int update(Book dto) {

return dao.update(dto);

}

public int delete(Book dto) {

return dao.delete(dto);

}

public Book getOne(Book dto) {

return dao.getOne(dto);

}

public List<Book> getAll() {

return dao.getAll();

}

도서 목록 출력 : http://localhost:8080/bookapp/book

View 만들기 : /src/main/webapp/WEB-INF/views 폴더에 생성

book_list.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ page session="false" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>도서 목록</title>
</head>
<body>
	번호 도서명 가격 출판사
	<c:forEach items="${books}" var="book">
		<p> ${book.no} ${book.title } ${book.pric } ${book.publ } </p>
	</c:forEach>
</body>
</html>

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

<%@ page session="false" %>

<!DOCTYPE html>

<html>

<head>

</head>

<body>

번호 도서명 가격 출판사

<c:forEach items="${books}" var="book">

<p> ${book.no} ${book.title } ${book.pric } ${book.publ } </p>

</c:forEach>

</body>

</html>

Controller 클래스 만들기

/bookapp 위치에 controller/book 폴더 생성

BookController 클래스 생성

package krco.moak.bookapp.controller.book;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

import krco.moak.bookapp.dao.book.BookDAO;
import krco.moak.bookapp.dto.book.Book;
import krco.moak.bookapp.service.book.BookService;

@Controller
public class BookController {

	@Autowired
	BookService service;

	private static final Logger logger = LoggerFactory.getLogger(BookController.class);

	@RequestMapping(value = "/book", method = RequestMethod.GET)
	public String home(Model model) {
		model.addAttribute("books", service.getAll());

		return "book_list";
	}
}

package krco.moak.bookapp.controller.book;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.RequestParam;

import krco.moak.bookapp.dao.book.BookDAO;

import krco.moak.bookapp.dto.book.Book;

import krco.moak.bookapp.service.book.BookService;

@Controller

public class BookController {

@Autowired

BookService service;

private static final Logger logger = LoggerFactory.getLogger(BookController.class);

@RequestMapping(value = "/book", method = RequestMethod.GET)

public String home(Model model) {

model.addAttribute("books", service.getAll());

return "book_list";

}

결과 확인 : http://localhost:8080/bookapp/book
1. BookApp 프로젝트를 마우스 오른쪽 버튼 클릭 -> Run As -> Run on Server

도서 자세히 보기 : http://localhost:8080/bookapp/book/201900003

View 만들기 : /src/main/webapp/WEB-INF/views 폴더에 생성

book_detail.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ page session="false" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>도서 자세히</title>
</head>
<body>
	<p>번호 : ${book.no}</p>
	<p>도서명 : ${book.title }</p>
	<p>가격 : ${book.pric }</p>
	<p>출판사 : ${book.publ }</p>
</body>
</html>

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

<%@ page session="false" %>

<!DOCTYPE html>

<html>

<head>

</head>

<body>

<p>도서명 : ${book.title }</p>

</body>

</html>

Controller 클래스 수정

BookController 클래스 수정

package krco.moak.bookapp.controller.book;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

import krco.moak.bookapp.dao.book.BookDAO;
import krco.moak.bookapp.dto.book.Book;
import krco.moak.bookapp.service.book.BookService;

@Controller
public class BookController {

	@Autowired
	BookService service;

	private static final Logger logger = LoggerFactory.getLogger(BookController.class);

	@RequestMapping(value = "/book", method = RequestMethod.GET)
	public String home(Model model) {
		model.addAttribute("books", service.getAll());

		return "book_list";
	}

	@RequestMapping(value = "/book/{no}", method = RequestMethod.GET)
	public String detail(@PathVariable int no, Model model) {
		Book vo = new Book();
		vo.setNo(no);

		model.addAttribute("book",  service.getOne(vo));

		return "book_detail";
	}
}

package krco.moak.bookapp.controller.book;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.RequestParam;

import krco.moak.bookapp.dao.book.BookDAO;

import krco.moak.bookapp.dto.book.Book;

import krco.moak.bookapp.service.book.BookService;

@Controller

public class BookController {

@Autowired

BookService service;

private static final Logger logger = LoggerFactory.getLogger(BookController.class);

@RequestMapping(value = "/book", method = RequestMethod.GET)

public String home(Model model) {

model.addAttribute("books", service.getAll());

return "book_list";

}

@RequestMapping(value = "/book/{no}", method = RequestMethod.GET)

public String detail(@PathVariable int no, Model model) {

Book vo = new Book();

vo.setNo(no);

model.addAttribute("book", service.getOne(vo));

return "book_detail";

}

결과 확인 : http://localhost:8080/bookapp/book/201900003
1. BookApp 프로젝트를 마우스 오른쪽 버튼 클릭 -> Run As -> Run on Server

도서 등록 : http://localhost:8080/bookapp/book/register_form

View 만들기 : /src/main/webapp/WEB-INF/views 폴더에 생성

book_register_form.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<c:set var="contextPath"  value="${pageContext.request.contextPath}"  />
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	<div class="container">
		<form action="${contextPath}/book/register" method="post">
			<input type="text" placeholder="도서명" name="title" value="" required>
			<!-- name값과 메서드의 매개변수가 이름이 같으면 알아서 넣어줌 -->
			<input type="text" placeholder="가격" name="pric" value="" required>
			<input type="text" placeholder="출판사" name="publ" value="" required>
			<button type="submit">저장하기</button>
		</form>
	</div>
</body>
</html>

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>

<c:set var="contextPath" value="${pageContext.request.contextPath}" />

<!DOCTYPE html>

<html>

<head>

<title>Insert title here</title>

</head>

<body>

</form>

</div>

</body>

</html>

Controller 클래스 수정

BookController 클래스 수정

package krco.moak.bookapp.controller.book;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

import krco.moak.bookapp.dao.book.BookDAO;
import krco.moak.bookapp.dto.book.Book;
import krco.moak.bookapp.service.book.BookService;

@Controller
public class BookController {

	@Autowired
	BookService service;

	private static final Logger logger = LoggerFactory.getLogger(BookController.class);

	@RequestMapping(value = "/book", method = RequestMethod.GET)
	public String home(Model model) {
		model.addAttribute("books", service.getAll());

		return "book_list";
	}

	@RequestMapping(value = "/book/{no}", method = RequestMethod.GET)
	public String detail(@PathVariable int no, Model model) {
		Book vo = new Book();
		vo.setNo(no);

		model.addAttribute("book",  service.getOne(vo));

		return "book_detail";
	}

	@RequestMapping(value = "/book/register_form")
	public String register_form(Model model) {

		return "book_register_form";
	}

	@RequestMapping(value = "/book/register")
	public String register(Model model
			, @RequestParam("title") String title
			, @RequestParam("pric") String pric
			, @RequestParam("publ") String publ
			) {

		Book vo = new Book();
		vo.setTitle(title);
		vo.setPric(Integer.parseInt(pric));
		vo.setPubl(publ);

		int r = service.insert(vo);

		return "redirect:/book";
	}
}

package krco.moak.bookapp.controller.book;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.RequestParam;

import krco.moak.bookapp.dao.book.BookDAO;

import krco.moak.bookapp.dto.book.Book;

import krco.moak.bookapp.service.book.BookService;

@Controller

public class BookController {

@Autowired

BookService service;

private static final Logger logger = LoggerFactory.getLogger(BookController.class);

@RequestMapping(value = "/book", method = RequestMethod.GET)

public String home(Model model) {

model.addAttribute("books", service.getAll());

return "book_list";

}

@RequestMapping(value = "/book/{no}", method = RequestMethod.GET)

public String detail(@PathVariable int no, Model model) {

Book vo = new Book();

vo.setNo(no);

model.addAttribute("book", service.getOne(vo));

return "book_detail";

}

@RequestMapping(value = "/book/register_form")

public String register_form(Model model) {

return "book_register_form";

}

@RequestMapping(value = "/book/register")

public String register(Model model

, @RequestParam("title") String title

, @RequestParam("pric") String pric

, @RequestParam("publ") String publ

) {

Book vo = new Book();

vo.setTitle(title);

vo.setPric(Integer.parseInt(pric));

vo.setPubl(publ);

int r = service.insert(vo);

return "redirect:/book";

}

결과 확인 : http://localhost:8080/bookapp/book/201900003

BookApp 프로젝트를 마우스 오른쪽 버튼 클릭 -> Run As -> Run on Server

DB에 한글이 깨져서 깨저셔 저장되면 /src/main/webapp/WEB-INF/web.xml에 다음 코드를 추가

<!-- 코드를 UTF-8로 통일 -->
<filter>
	<filter-name>encoding</filter-name>
	<filter-class>org.springframework.web.filter.CharacterEncodingFilter
	</filter-class>
	<init-param>
		<param-name>encoding</param-name>
		<param-value>UTF-8</param-value>
	</init-param>
</filter>
<filter-mapping>
	<filter-name>encoding</filter-name>
	<url-pattern>/*</url-pattern>
</filter-mapping>

<filter-name>encoding</filter-name>

<filter-class>org.springframework.web.filter.CharacterEncodingFilter

</filter-class>

<init-param>

<param-name>encoding</param-name>

<param-value>UTF-8</param-value>

</init-param>

</filter>

<filter-mapping>

<filter-name>encoding</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

도서 삭제/수정

View 만들기 : /src/main/webapp/WEB-INF/views 폴더에 생성

book_detail.jsp 수정

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ page session="false" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>도서 자세히</title>
</head>
<body>
	<p>번호 : ${book.no}</p>
	<p>도서명 : ${book.title }</p>
	<p>가격 : ${book.pric }</p>
	<p>출판사 : ${book.publ }</p>

	<p>
		<a href="/bookapp/book/delete/${book.no }">삭제</a>
		<a href="/bookapp/book/update_form/${book.no }">수정</a>
	</p>
</body>
</html>

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

<%@ page session="false" %>

<!DOCTYPE html>

<html>

<head>

</head>

<body>

<p>도서명 : ${book.title }</p>

<p>

</p>

</body>

</html>

book_update_form.jsp 생성

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>도서정보 수정</title>
</head>
<body>
	<div class="container">
		<form action="/bookapp/book/update" method="post">
			<input type="hidden" name="no" value="${book.no }">
			제목 : <input type="text" name="title" value="${book.title }"><br>
			가격 : <input type="text" name="pric" value="${book.pric }"><br>
			출판사 : <input type="text" name="publ" value="${book.publ }"><br>
			<input type="submit" value="수정">
		</form>
	</div>
</body>
</html>

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

<!DOCTYPE html>

<html>

<head>

</head>

<body>

제목 : <input type="text" name="title" value="${book.title }"><br>

가격 : <input type="text" name="pric" value="${book.pric }"><br>

출판사 : <input type="text" name="publ" value="${book.publ }"><br>

</form>

</div>

</body>

</html>

Controller 클래스 수정

BookController 클래스 수정

package krco.moak.bookapp.controller.book;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

import krco.moak.bookapp.dao.book.BookDAO;
import krco.moak.bookapp.dto.book.Book;
import krco.moak.bookapp.service.book.BookService;

@Controller
public class BookController {

	@Autowired
	BookService service;

	private static final Logger logger = LoggerFactory.getLogger(BookController.class);

	@RequestMapping(value = "/book", method = RequestMethod.GET)
	public String home(Model model) {
		model.addAttribute("books", service.getAll());

		return "book_list";
	}

	@RequestMapping(value = "/book/{no}", method = RequestMethod.GET)
	public String detail(@PathVariable int no, Model model) {
		Book vo = new Book();
		vo.setNo(no);

		model.addAttribute("book",  service.getOne(vo));

		return "book_detail";
	}

	@RequestMapping(value = "/book/register_form")
	public String register_form(Model model) {

		return "book_register_form";
	}

	@RequestMapping(value = "/book/register")
	public String register(Model model
			, @RequestParam("title") String title
			, @RequestParam("pric") String pric
			, @RequestParam("publ") String publ
			) {

		Book vo = new Book();
		vo.setTitle(title);
		vo.setPric(Integer.parseInt(pric));
		vo.setPubl(publ);

		int r = service.insert(vo);

		return "redirect:/book";
	}
	@RequestMapping(value="/book/delete/{no}")
	public String delete(@PathVariable int no, Model model) {

		Book vo = new Book();
		vo.setNo(no);
		service.delete(vo);

		return "redirect:/book";
	}

	@RequestMapping(value="/book/update_form/{no}", method = RequestMethod.GET)
	public String update_form(@PathVariable int no, Model model) {
		Book vo = new Book();
		vo.setNo(no);

		model.addAttribute("book", service.getOne(vo));
		return "book/book_update_form";
	}

	@RequestMapping(value="/book/update")
	public String update(Model model
			, @RequestParam("no") String no
			, @RequestParam("title") String title
			, @RequestParam("pric") String pric
			, @RequestParam("publ") String publ
			) {

		Book vo = new Book();
		vo.setNo(Integer.parseInt(no));
		vo.setTitle(title);
		vo.setPric(Integer.parseInt(pric));
		vo.setPubl(publ);

		service.update(vo);
		return "redirect:/book";
	}
}

100

package krco.moak.bookapp.controller.book;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.RequestParam;

import krco.moak.bookapp.dao.book.BookDAO;

import krco.moak.bookapp.dto.book.Book;

import krco.moak.bookapp.service.book.BookService;

@Controller

public class BookController {

@Autowired

BookService service;

private static final Logger logger = LoggerFactory.getLogger(BookController.class);

@RequestMapping(value = "/book", method = RequestMethod.GET)

public String home(Model model) {

model.addAttribute("books", service.getAll());

return "book_list";

}

@RequestMapping(value = "/book/{no}", method = RequestMethod.GET)

public String detail(@PathVariable int no, Model model) {

Book vo = new Book();

vo.setNo(no);

model.addAttribute("book", service.getOne(vo));

return "book_detail";

}

@RequestMapping(value = "/book/register_form")

public String register_form(Model model) {

return "book_register_form";

}

@RequestMapping(value = "/book/register")

public String register(Model model

, @RequestParam("title") String title

, @RequestParam("pric") String pric

, @RequestParam("publ") String publ

) {

Book vo = new Book();

vo.setTitle(title);

vo.setPric(Integer.parseInt(pric));

vo.setPubl(publ);

int r = service.insert(vo);

return "redirect:/book";

}

@RequestMapping(value="/book/delete/{no}")

public String delete(@PathVariable int no, Model model) {

Book vo = new Book();

vo.setNo(no);

service.delete(vo);

return "redirect:/book";

}

@RequestMapping(value="/book/update_form/{no}", method = RequestMethod.GET)

public String update_form(@PathVariable int no, Model model) {

Book vo = new Book();

vo.setNo(no);

model.addAttribute("book", service.getOne(vo));

return "book/book_update_form";

}

@RequestMapping(value="/book/update")

public String update(Model model

, @RequestParam("no") String no

, @RequestParam("title") String title

, @RequestParam("pric") String pric

, @RequestParam("publ") String publ

) {

Book vo = new Book();

vo.setNo(Integer.parseInt(no));

vo.setTitle(title);

vo.setPric(Integer.parseInt(pric));

vo.setPubl(publ);

service.update(vo);

return "redirect:/book";

}

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