[새싹] 현대IT&E 231128 기록 - Spring (di작성예정)

최정윤·2023년 11월 29일
Spring
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01. 개발을 위한 준비

  • JDK 설치
  • STS3 설치
  • STS 실행 환경 편집
  • 인코딩 변경
  • Tomcat 서버 설정
  • 프로젝트 설정
  • 스프링 버전 변경
  • Java version 변경
  • Lombok 라이브러리 설치

STS로 실습해보기




article 실습 - 게시판 만들기

코드

root

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/maven-v4_0_0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>net.developia</groupId>
	<artifactId>spring01</artifactId>
	<name>spring01</name>
	<packaging>war</packaging>
	<version>1.0.0-BUILD-SNAPSHOT</version>
	<properties>
		<java-version>11</java-version>
		<org.springframework-version>5.0.7.RELEASE</org.springframework-version>
		<org.aspectj-version>1.6.10</org.aspectj-version>
		<org.slf4j-version>1.6.6</org.slf4j-version>
	</properties>
	<dependencies>
		<!-- Spring -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>${org.springframework-version}</version>
			<exclusions>
				<!-- Exclude Commons Logging in favor of SLF4j -->
				<exclusion>
					<groupId>commons-logging</groupId>
					<artifactId>commons-logging</artifactId>
				 </exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>${org.springframework-version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
			<version>${org.springframework-version}</version>
		</dependency>
				
		<!-- AspectJ -->
		<dependency>
			<groupId>org.aspectj</groupId>
			<artifactId>aspectjrt</artifactId>
			<version>${org.aspectj-version}</version>
		</dependency>	
		
		<!-- Logging -->
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-api</artifactId>
			<version>${org.slf4j-version}</version>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>jcl-over-slf4j</artifactId>
			<version>${org.slf4j-version}</version>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
			<version>${org.slf4j-version}</version>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>log4j</groupId>
			<artifactId>log4j</artifactId>
			<version>1.2.15</version>
			<exclusions>
				<exclusion>
					<groupId>javax.mail</groupId>
					<artifactId>mail</artifactId>
				</exclusion>
				<exclusion>
					<groupId>javax.jms</groupId>
					<artifactId>jms</artifactId>
				</exclusion>
				<exclusion>
					<groupId>com.sun.jdmk</groupId>
					<artifactId>jmxtools</artifactId>
				</exclusion>
				<exclusion>
					<groupId>com.sun.jmx</groupId>
					<artifactId>jmxri</artifactId>
				</exclusion>
			</exclusions>
			<scope>runtime</scope>
		</dependency>

		<!-- @Inject -->
		<dependency>
			<groupId>javax.inject</groupId>
			<artifactId>javax.inject</artifactId>
			<version>1</version>
		</dependency>
				
		<!-- Servlet -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>servlet-api</artifactId>
			<version>2.5</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>javax.servlet.jsp</groupId>
			<artifactId>jsp-api</artifactId>
			<version>2.1</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>
	
		<!-- Test -->
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.12</version>
			<scope>test</scope>
		</dependency>  
		
		<!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
		<dependency>
		    <groupId>org.projectlombok</groupId>
		    <artifactId>lombok</artifactId>
		    <version>1.18.30</version>
		    <scope>provided</scope>
		</dependency>
		   
		<!-- https://mvnrepository.com/artifact/commons-codec/commons-codec -->
		<dependency>
		    <groupId>commons-codec</groupId>
		    <artifactId>commons-codec</artifactId>
		    <version>1.16.0</version>
		</dependency>
		      
		<!-- https://mvnrepository.com/artifact/org.lazyluke/log4jdbc-remix -->
		<dependency>
		    <groupId>org.lazyluke</groupId>
		    <artifactId>log4jdbc-remix</artifactId>
		    <version>0.2.7</version>
		</dependency>

		
		<!-- https://mvnrepository.com/artifact/com.oracle.database.jdbc/ojdbc11 -->
		<dependency>
		    <groupId>com.oracle.database.jdbc</groupId>
		    <artifactId>ojdbc11</artifactId>
		    <version>21.11.0.0</version>
		</dependency>
		
	</dependencies>
    <build>
        <plugins>
            <plugin>
                <artifactId>maven-eclipse-plugin</artifactId>
                <version>2.9</version>
                <configuration>
                    <additionalProjectnatures>
                        <projectnature>org.springframework.ide.eclipse.core.springnature</projectnature>
                    </additionalProjectnatures>
                    <additionalBuildcommands>
                        <buildcommand>org.springframework.ide.eclipse.core.springbuilder</buildcommand>
                    </additionalBuildcommands>
                    <downloadSources>true</downloadSources>
                    <downloadJavadocs>true</downloadJavadocs>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.5.1</version>
                <configuration>
                    <source>11</source>
                    <target>11</target>
                    <compilerArgument>-Xlint:all</compilerArgument>
                    <showWarnings>true</showWarnings>
                    <showDeprecation>true</showDeprecation>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <version>1.2.1</version>
                <configuration>
                    <mainClass>org.test.int1.Main</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

net.developia.spring01.article.controller

ArticleDetail.java

package net.developia.spring01.article.controller;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;

import lombok.AllArgsConstructor;
import net.developia.spring01.article.dto.ArticleDTO;
import net.developia.spring01.article.service.ArticleService;

@Controller
@AllArgsConstructor
public class ArticleDetail {
	@Autowired
	ArticleService service;

	@GetMapping("/article/detail")
	protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		long no = Long.parseLong(request.getParameter("no"));
		
		
		try {
			ArticleDTO dto = service.getDetail(no);
			return new ModelAndView("article/detail","dto",dto);
		} catch (Exception e) {
			ModelAndView mav = new ModelAndView("/WEB-INF/views/article/result.jsp");
			mav.addObject("msg", e.getMessage());
			mav.addObject("url", "list");
			return mav;
		}
	}
}

ArticleInsert.java

package net.developia.spring01.article.controller;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;

import net.developia.spring01.article.dto.ArticleDTO;
import net.developia.spring01.article.service.ArticleService;

@Controller
@RequestMapping("/article")
public class ArticleInsert {
	@Autowired
	ArticleService service;
	
	@GetMapping("/insert")
	public ModelAndView insert(HttpServletRequest request, HttpServletResponse response) {

		return new ModelAndView("article/insert");
	}

	@PostMapping("/insertAction")
	public ModelAndView insertAction(HttpServletRequest request, HttpServletResponse response) {
		String name      = request.getParameter("name");
		String title     = request.getParameter("title");
		String password  = request.getParameter("password");
		String content   = request.getParameter("content");
		
		ArticleDTO articleDTO = new ArticleDTO();
		articleDTO.setName(name);
		articleDTO.setTitle(title);
		articleDTO.setPassword(password);
		articleDTO.setContent(content);
		
		try {
			service.insertArticle(articleDTO);
			return new ModelAndView("redirect:list");
		} catch (Exception e) {
			ModelAndView mav = new ModelAndView("article/result");
			mav.addObject("msg", "게시물 입력 실패\\n입력 폼으로 되돌아갑니다.");
			mav.addObject("url", "javascript:history.back();");
			return mav;
		}
	}

}

ArticleInsertAction.java

package net.developia.spring01.article.controller;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;

import lombok.AllArgsConstructor;
import lombok.extern.java.Log;
import net.developia.spring01.article.dto.ArticleDTO;
import net.developia.spring01.article.service.ArticleService;

@Controller
@Log
@AllArgsConstructor
public class ArticleInsertAction extends AbstractController {
	@Autowired
	ArticleService service;
	
	@Override
	@PostMapping
	public ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) {
		String name      = request.getParameter("name");
		String title     = request.getParameter("title");
		String password  = request.getParameter("password");
		String content   = request.getParameter("content");
		
		ArticleDTO articleDTO = new ArticleDTO();
		articleDTO.setName(name);
		articleDTO.setTitle(title);
		articleDTO.setPassword(password);
		articleDTO.setContent(content);
		
		try {
			service.insertArticle(articleDTO);
			return new ModelAndView("redirect:list");
		} catch (Exception e) {
			ModelAndView mav = new ModelAndView("article/result");
			mav.addObject("msg", "게시물 입력 실패\\n입력 폼으로 되돌아갑니다.");
			mav.addObject("url", "javascript:history.back();");
			return mav;
		}
	}
}

Article.java

package net.developia.spring01.article.controller;

import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;

import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import net.developia.spring01.article.dto.ArticleDTO;
import net.developia.spring01.article.service.ArticleService;

@Controller
@Slf4j
@AllArgsConstructor
public class ArticleList extends AbstractController {
	
	//ArticleService service = ArticleService.getInstance();
	@Autowired
	ArticleService service;
		
	@RequestMapping(value="/article/list", 
			method= {RequestMethod.GET, RequestMethod.POST})
	@Override
	public ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) {
		
		try {
			List<ArticleDTO> list = service.getArticleList();
			return new ModelAndView("article/list", "list", list);
			
		} catch (Exception e) {
			ModelAndView mav = new ModelAndView("/WEB-INF/views/article/result.jsp");
			mav.addObject("msg", "게시물 리스트 출력 실패");
			mav.addObject("url", "../");
			return mav;
		}
	}
}

net.developia.spring01.article.dao

ArticleDAO.java

package net.developia.spring01.article.dao;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import org.springframework.stereotype.Repository;

import lombok.extern.java.Log;
import net.developia.spring01.article.dto.ArticleDTO;

@Log
@Repository
public class ArticleDAO {	
	public ArticleDAO() {
		try {
			Class.forName("net.sf.log4jdbc.DriverSpy");
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		}
	}
	
	private Connection getConnection() throws SQLException {
		return DriverManager.getConnection(
				"jdbc:log4jdbc:oracle:thin:@localhost:1521/xepdb1", "ace","ace");
	}
	
	public void insertArticle(ArticleDTO articleDTO) throws SQLException {
		String sql =
			"insert into article(no, title, name, content, password)" +
			"values(seq_article.nextval, ?, ?, ?, ?)";
			
		try(Connection conn = getConnection();
			PreparedStatement pstmt = conn.prepareStatement(sql)) {
			pstmt.setString(1, articleDTO.getTitle());
			pstmt.setString(2, articleDTO.getName());
			pstmt.setString(3, articleDTO.getContent());
			pstmt.setString(4, articleDTO.getPassword());
			pstmt.executeQuery();
		}
	}

	public List<ArticleDTO> getArticleList() throws SQLException {
		String sql =
			"SELECT no,title,name,regdate,readcount " +
			"FROM   article " +
			"ORDER BY no DESC ";
		
		List<ArticleDTO> list = new ArrayList<>();
		try(Connection conn = getConnection();
			PreparedStatement pstmt = conn.prepareStatement(sql);
			ResultSet rs = pstmt.executeQuery()) {
			while(rs.next()) {
				ArticleDTO dto = new ArticleDTO();
				dto.setNo(rs.getLong("no"));
				dto.setTitle(rs.getString("title"));
				dto.setName(rs.getString("name"));
				dto.setRegdate(rs.getDate("regdate"));
				dto.setReadcount(rs.getInt("readcount"));
				list.add(dto);
			}
			return list;
		}
	}

	public ArticleDTO getDetail(long no) throws SQLException {
		String sql =
			"SELECT no,title,name,regdate,readcount,content " +
			"FROM   article " +
			"WHERE  no=? ";
		ArticleDTO dto = null;	
		try(Connection conn = getConnection();
			PreparedStatement pstmt = conn.prepareStatement(sql)){
			pstmt.setLong(1, no);
		
			try(ResultSet rs = pstmt.executeQuery()) {
			
				if (rs.next()) {
					dto = new ArticleDTO();
					dto.setNo(rs.getLong("no"));
					dto.setTitle(rs.getString("title"));
					dto.setName(rs.getString("name"));
					dto.setRegdate(rs.getDate("regdate"));
					dto.setReadcount(rs.getInt("readcount"));
					dto.setContent(rs.getString("content"));
				}
				return dto;
			}
		}
	}
}

net.developia.spring.01.article.dto

ArticleDTO.java

package net.developia.spring01.article.dto;

import java.io.Serializable;
import java.util.Date;

import org.apache.commons.codec.digest.DigestUtils;

import lombok.Getter;
import lombok.Setter;
import lombok.ToString;

@Getter
@Setter
@ToString
public class ArticleDTO implements Serializable {
	private long no;
	private String title;
	private String name;
	private String password;
	private String content;
	private Date regdate;
	private int readcount;
	
	public void setPassword(String password) {
		this.password = DigestUtils.sha512Hex(password);
	}
}

net.developia.spring01.article.service

ArticleService.java

package net.developia.spring01.article.service;

import java.sql.SQLException;
import java.util.List;

import org.springframework.stereotype.Service;

import lombok.extern.java.Log;
import net.developia.spring01.article.dao.ArticleDAO;
import net.developia.spring01.article.dto.ArticleDTO;

@Log
@Service
public class ArticleService {
	
	private ArticleDAO dao;
	
	public ArticleService(ArticleDAO dao) {
		this.dao = dao;
	}

	public void insertArticle(ArticleDTO articleDTO) throws SQLException {
		try {
			dao.insertArticle(articleDTO);
		} catch (SQLException e) {
			log.info(e.getMessage());
			throw e;
		}
	}

	public List<ArticleDTO> getArticleList() throws Exception {
		try {
			return dao.getArticleList();
		} catch (Exception e) {
			log.info(e.getMessage());
			throw e;
		}
	}

	public ArticleDTO getDetail(long no) throws Exception {
		try {
			ArticleDTO dto = dao.getDetail(no);
			if (dto == null) throw new RuntimeException(no + "번 게시물이 존재하지 않습니다.");
			return dto;
		} catch (Exception e) {
			log.info(e.getMessage());
			throw e;
		}
	}
}

src/main/webapp/resources/css

article_style.css

@charset "UTF-8";

body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  margin: 0;
  padding: 20px;
}

table {
  width: 50%;
  margin: 20px auto;
  border-collapse: collapse;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  border-radius: 5px;
}

caption {
  font-size: 1.5em;
  font-weight: bold;
  padding: 10px;
  background-color: #007bff;
  color: white;
  border-top-left-radius: 5px;
  border-top-right-radius: 5px;
}

th, td {
  padding: 10px;
  text-align: left;
  border-bottom: 1px solid #ddd;
}

th {
  background-color: #f2f2f2;
}

a {
  text-decoration: none;
  color: #007bff;
  margin-right: 10px;
}

a:hover {
  text-decoration: underline;
}

src/main/webapp/WEB-INF/spring

appServlet/servlet-context.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:beans="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd
		http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">

	<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->
	
	<!-- Enables the Spring MVC @Controller programming model -->
	<annotation-driven />

	<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
	<resources mapping="/resources/**" location="/resources/" />

	<!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
	<beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<beans:property name="prefix" value="/WEB-INF/views/" />
		<beans:property name="suffix" value=".jsp" />
	</beans:bean>
	
	<context:component-scan base-package="net.developia.spring01.article" />
		
	
<!-- 	
	<beans:bean name="/game/ready" class="net.developia.spring01.mvc.ReadyController" />
	<beans:bean name="/game/result" class="net.developia.spring01.mvc.ResultController" />
	<beans:bean name="/hello" class="net.developia.spring01.SpringMVC" />
 -->	
	
	
<!-- 
	<beans:bean name="articleDao" class="net.developia.spring01.article.dao.ArticleDAO" />

	<beans:bean name="articleService" class="net.developia.spring01.article.service.ArticleService">
		<beans:constructor-arg ref="articleDao" />
	</beans:bean>	
	<beans:bean name="/article/insert" class="net.developia.spring01.article.controller.ArticleInsert" />

	<beans:bean name="/article/list" class="net.developia.spring01.article.controller.ArticleList">
		<beans:constructor-arg ref="articleService" />
	</beans:bean> 
	<beans:bean name="/article/detail" class="net.developia.spring01.article.controller.ArticleDetail">
		<beans:constructor-arg ref="articleService" />
	</beans:bean>
	<beans:bean name="/article/insertAction" class="net.developia.spring01.article.controller.ArticleInsertAction">
		<beans:constructor-arg ref="articleService" />
	</beans:bean>
	
	-->

</beans:beans>

root-context.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd">
	
	<!-- Root Context: defines shared resources visible to all other web components -->
		
</beans>

src/main/webapp/WEB-INF/views

article/detail.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<c:set var="myContextPath" value="${pageContext.request.contextPath}" />
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<link rel="stylesheet" href="${myContextPath}/resources/css/article_style.css">
</head>
<body>
<img src="<c:url value="/resources/img/detail_icon.jpg" />" width="20" />
<img src="${myContextPath}/resources/img/detail_icon.jpg" width="20" />
<table>
  <caption>게시물 상세보기</caption>
  <tr>
    <th>글번호</th>
    <td>${dto.no}</td>
  </tr>
  <tr>
    <th>제목</th>
    <td>${dto.title}</td>
  </tr>
  <tr>
    <th>이름</th>
    <td>${dto.name}</td>
  </tr>
  <tr>
    <th>내용</th>
    <td>${dto.content}</td>
  </tr>
  <tr>
    <th>작성일</th>
    <td><fmt:formatDate value="${dto.regdate}" pattern="yyyy-MM-dd HH:mm:ss"/></td>
  </tr>
  <tr>
    <th>조회수</th>
    <td>${dto.readcount}</td>
  </tr>
</table><br/>
<a href="update?no=${dto.no}">수정</a> |
<a href="delete?no=${dto.no}">삭제</a> |
<a href="list">리스트</a>
</body>
</html>

article/insert.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<c:set var="app" value=""/>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<link rel="stylesheet" href="article_styles.css">
</head>
<body>
<form name="myform" method="post" action="insertAction">
<table>
  <caption>게시물 글쓰기</caption>
  <tr>
    <th>제목</th>
    <td><input type="text" name="title" autofocus required /></td>
  </tr>
  <tr>
    <th>이름</th>
    <td><input type="text" name="name" required /></td>
  </tr>
  <tr>
    <th>비밀번호</th>
    <td><input type="password" name="password" required /></td>
  </tr>
  <tr>
    <th>내용</th>
    <td><textarea name="content" rows="5" cols="40"></textarea></td>
  </tr>
  <tr>
    <td colspan="2" align="center">
      <input type="submit" value="완료" />
    </td>
  </tr>
</table>
</form>
</body>
</html>

article/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" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">

<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

<!-- 구글 폰트 -->
<link href="https://fonts.googleapis.com/css?family=Noto+Sans+KR" rel="stylesheet">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<link rel="stylesheet" href="../css/site.css">

<link rel="icon" type="image/png" sizes="16x16" href="/webdev/kitty.png">
<title>Insert title here</title>
</head>
<body>
<br/>
<div class="container">
	<div class="jumbotron"><h1>게시물 리스트</h1></div>
	
	<div style="text-align: right">1/1000</div>
	<table border="1" class="table">
	<thead class="thead-dark">
	<tr>
		<th scope="col">번호</th>
		<th scope="col">제목</th>
		<th scope="col">작성자</th>
		<th scope="col">작성일</th>
		<th scope="col">조회수</th>
	</tr>
	</thead>
	<c:forEach items="${list}" var="article">
	<tr>
		<th scope="row">${article.no}</th>
		<td><a href="detail?no=${article.no}">${article.title}</a></td>
		<td>${article.name}</td>
		<td>${article.regdate}</td>
		<td>${article.readcount}</td>
	</tr>
	</c:forEach>
	</table>
	<br/>
	<button type="button" class="btn btn-primary" onclick="javascript:location.href='insert'">글쓰기</button>
	
</div>
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
</body>
</html>

result.jsp

<%@ 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>
<script type="text/javascript">
alert('${msg}');
location.href='${url}';
</script>
</body>
</html>

src/main/webapp/WEB-INF

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee https://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

	<filter>
		<filter-name>character 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>character encoding</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
	
	
	<!-- The definition of the Root Spring Container shared by all Servlets and Filters -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>/WEB-INF/spring/root-context.xml</param-value>
	</context-param>
	
	<!-- Creates the Spring Container shared by all Servlets and Filters -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

	<!-- Processes application requests -->
	<servlet>
		<servlet-name>appServlet</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
		
	<servlet-mapping>
		<servlet-name>appServlet</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>

</web-app>

실행화면

http://localhost:8080/spring01/article/insert

http://localhost:8080/spring01/article/list

http://localhost:8080/spring01/article/detail?no=11

추가내용

MVC (Model-View-Controller)

  • 소프트웨어 디자인 패턴
  • 패턴을 성공적으로 사용하면, 사용자 인터페이스로부터 비즈니스 로직을 분리하여 애플리케이션의 시각적 요소나 그 이면에서 실행되는 비즈니스 로직을 서로 영향 없이 쉽게 고칠 수 있는 애플리케이션을 만들 수 있다.
  • MVC에서 모델은 애플리케이션의 정보를 나타내며, 뷰는 텍스트, 체크박스 항복 등과 같은 사용자 인터페이스 요소를 나타내고, 컨트롤러는 데이터와 비즈니스 로직 사이의 상호동작을 관리한다.

MVC 구성요소

  • 컨트롤러: 모델에 명령을 보냄으로써 모델의 상태를 변경할 수 있다. 또, 컨트롤러가 관련된 뷰에 명령을 보냄으로써 모델의 표시 방법을 바꿀 수 있다.
  • 모델: 모델의 상태에 변화가 있을 때 컨트롤러와 뷰에 이를 통보한다. 이와 같은 통보를 통해서 뷰는 최신의 결과를 보여줄 수 있고, 컨트롤러는 모델의 변화에 따른 적용 가능한 명령을 추가.제거.수정할 수 있다. 어떤 MVC 구현에서는 통보 대신 뷰나 컨트롤러가 직접 모델의 상태를 읽어 오기도 한다.
  • 뷰: 사용자가 볼 결과물을 생성하기 위해 모델로부터 정보를 얻어온다.


DAO

  • DB를 사용해 데이터를 조회하거나 조작하는 기능을 담당하는 것들을 DAO라고 부른다.
  • DAO를 하나 만들어 DB 전용 객체로만 쓰면 많은 커넥션이 일어나는 부담이 줄어든게 된다.

DTO

  • 계층간 데이터 교환을 위한 자바빈즈이다.
  • 로직을 가지지 않고 data와 datadp wjqrmsdmf dnlgks gettter, setter만 가지고 있다.
  • DTO는 DB에서 Data를 얻어 Service나 Controller 등으로 보낼 때 사용하는 객체이다.

Service

  • 비지니스 로직이 들어가는 부분
  • Controller가 요청을 받으면 적절한 Service에 전달하고, 전달 받은 Service는 비즈니스 로직을 처리한다.
  • DAO로 데이터베이스에 접근, DTO로 데이터를 전달받은 후, 적절한 처리를 하여 반환한다.

[참고자료]

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이전 포스트

[새싹] 현대IT&E 231127 기록 - Spring

다음 포스트

[새싹] 현대IT&E 231129 기록 - Spring

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