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Last Modified 2025.5.5

MySQL을 사용하는 스프링 게시판 프로그램

오라클을 사용하는 스프링 MVC 게시판을 MySql을 사용하도록 수정해 보자.

데이터베이스 디지인

root 계정으로 mysql 데이터베이스에 접속한다. 

mysql --user=root --password mysql

접속된 상태에서 다음을 실행한다. 

mysql --user=root --password mysql
	
create user 'java'@'%' identified by 'school';
grant all privileges on *.* to 'java'@'%';

create database javaskool;
exit;

mysql --user=java --password javaskool

create table member (
    email varchar(60) PRIMARY KEY,
    passwd varchar(200) NOT NULL,
    name varchar(20) NOT NULL,
    mobile varchar(20)
);

create table authorities (
    email VARCHAR(60) NOT NULL,
    authority VARCHAR(20) NOT NULL,
    CONSTRAINT fk_authorities FOREIGN KEY(email) REFERENCES member(email)
);

CREATE UNIQUE INDEX ix_authorities ON authorities(email,authority); 

create table board (
    boardcd varchar(20),
    boardnm varchar(40) NOT NULL,
    boardnm_ko varchar(40) NOT NULL,
    constraint PK_BOARD PRIMARY KEY(boardcd)
);

create table article (
    articleno int NOT NULL AUTO_INCREMENT,
    boardcd varchar(20),
    title varchar(200) NOT NULL,
    content text NOT NULL,
    email varchar(60),
    hit bigint,
    regdate datetime,
    constraint PK_ARTICLE PRIMARY KEY(articleno),
    constraint FK_ARTICLE FOREIGN KEY(boardcd) REFERENCES board(boardcd)
);

create table comments (
    commentno int NOT NULL AUTO_INCREMENT,
    articleno int,
    email varchar(60),
    memo varchar(4000) NOT NULL,
    regdate datetime,
    constraint PK_COMMENTS PRIMARY KEY(commentno)
);

create table attachfile (
    attachfileno int NOT NULL AUTO_INCREMENT,
    filename varchar(255) NOT NULL,
    filetype varchar(255),
    filesize bigint,
    articleno int,
    email varchar(60),
    filekey varchar(255),
    creation datetime,
    constraint PK_ATTACHFILE PRIMARY KEY(attachfileno)
);

create table views (
  no int primary key AUTO_INCREMENT,
  articleNo int,
  ip varchar(60),
  yearMonthDayHour char(10),
  unique key (articleNo, ip, yearMonthDayHour)
);

insert into board values ('chat','Chat','자유게시판');
commit;

exit;

소스

아래는 오라클용 스프링 MVC 게시판과 다른 부분이다.

오라클용 스프링 MVC 게시판과 같은 artifactId를 사용하는 건 바람직하지 않으니 바꾼다.

pom.xml
<artifactId>spring-bbs-mysql</artifactId>

<build>
<finalName>spring-bbs-mysql</finalName>

MySql은 대소문자를 구별한다. MySql에서 테이블 이름을 member로 생성했다면 select * from MEMBER;은 오라클과 달리 에러를 발생시킨다. securty.xml을 열고 인증 쿼리를 아래를 참조해 수정한다.

security.xml
<jdbc-user-service
	data-source-ref="dataSource"
	users-by-username-query="select email as username,passwd as password,1 as enabled
	from member where email = ?"
	authorities-by-username-query="select email as username,authority
	from authorities where email = ?" />

데이터소스 설정을 MySql용으로 아래와 같이 수정한다.

applicationContext.xml
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
	<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
	<property name="url" value="jdbc:mysql://localhost:3306/javaskool?useUnicode=yes&amp;characterEncoding=UTF-8" />
	<property name="username" value="java"/>
	<property name="password" value="school"/>
	<property name="maxTotal" value="100"/>
	<property name="maxWaitMillis" value="1000"/>
	<property name="poolPreparedStatements" value="true"/>
	<property name="defaultAutoCommit" value="true"/>
	<property name="validationQuery" value="SELECT 1" />
</bean>

기존 BoardMapper.xml을 MySql용으로 아래와 같이 수정한다.

BoardMapper.xml
<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE mapper
    PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
    "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="net.java_school.mybatis.BoardMapper">

	<select id="selectListOfArticles" parameterType="hashmap" resultType="Article">
		SELECT 
			a.articleno, a.title, a.regdate, a.hit, m.name, 
			count(distinct(f.attachfileno)) attachfileNum, 
			count(distinct(c.commentno)) commentNum
		FROM 
			article as a left join attachfile as f on a.articleno = f.articleno
				left join comments as c on a.articleno = c.articleno
				left join member as m on a.email = m.email
		WHERE
			a.boardcd = #{boardCd}
			<if test="searchWord != null and searchWord != ''">
			AND (title LIKE '%${searchWord}%' OR content LIKE '%${searchWord}%')
			</if>
		GROUP BY a.articleno, title, a.regdate, hit, m.name
		ORDER BY articleno DESC
		LIMIT #{offset}, #{rowCount}
	</select>

	<select id="selectCountOfArticles" parameterType="hashmap" resultType="int">
		SELECT count(*) FROM article 
		WHERE 
			boardcd = #{boardCd}
			<if test="searchWord != null and searchWord != ''">
			AND (title LIKE '%${searchWord}%' OR content LIKE '%${searchWord}%')
			</if>
	</select>

	<insert id="insert" parameterType="Article" useGeneratedKeys="true" keyProperty="articleNo">
		INSERT INTO article (boardcd, title, content, email, hit, regdate)
		VALUES
		(#{boardCd}, #{title}, #{content}, #{email}, 0, now())
	</insert>
	
	<insert id="insertAttachFile" parameterType="AttachFile">
		INSERT INTO attachfile (filename, filetype, filesize, articleno, email)
		VALUES
		(#{filename}, #{filetype}, #{filesize}, #{articleNo}, #{email})
	</insert>

	<update id="update" parameterType="Article">
		UPDATE article 
		SET title = #{title}, content = #{content} 
		WHERE articleno = #{articleNo}
	</update>

	<delete id="delete" parameterType="int">
		DELETE FROM article WHERE articleno = #{articleNo}
	</delete>

	<update id="updateHitPlusOne" parameterType="int">
		UPDATE article SET hit = hit + 1 WHERE articleno = #{articleNo}
	</update>

	<select id="selectOne" parameterType="int" resultType="Article">
		SELECT 
			articleno,
			title,
			content,
			a.email,
			ifNull(name, 'Anonymous') name,
			hit,
			regdate
		FROM article as a left join member as m on a.email = m.email
		WHERE 
			articleno = #{articleNo}
	</select>

	<select id="selectNextOne" parameterType="hashmap" resultType="Article">
		SELECT articleno, title 
		FROM article 
		WHERE 
			boardCd = #{boardCd} 
			AND articleno &gt; #{articleNo}
		<if test="searchWord != null and searchWord != ''">
			AND (title LIKE '%${searchWord}%' OR content LIKE '%${searchWord}%')
		</if> 
		ORDER BY articleno
		LIMIT 1
	</select>
	
	<select id="selectPrevOne" parameterType="hashmap" resultType="Article">
		SELECT articleno, title 
		FROM article 
		WHERE 
			boardCd = #{boardCd} 
			AND articleno &lt; #{articleNo}
		<if test="searchWord != null and searchWord != ''">
			AND (title LIKE '%${searchWord}%' OR content LIKE '%${searchWord}%')
		</if> 
		ORDER BY articleno DESC
		LIMIT 1
	</select>

	<select id="selectListOfAttachFiles" parameterType="int" resultType="AttachFile">
		SELECT 
			attachfileno,
			filename,
			filetype,
			filesize,
			articleno,
			email 
		FROM attachfile 
		WHERE articleno = #{articleNo} 
		ORDER BY attachfileno
	</select>

	<delete id="deleteFile" parameterType="int">
		DELETE FROM attachfile WHERE attachfileno = #{attachFileNo}
	</delete>

	<select id="selectOneBoard" parameterType="string" resultType="string">
		SELECT * FROM board WHERE boardcd = #{boardCd}
	</select>

	<insert id="insertComment" parameterType="Comment">
		INSERT INTO comments (articleno, email, memo, regdate)
		VALUES (#{articleNo}, #{email}, #{memo}, now())
	</insert>

	<update id="updateComment" parameterType="Comment">
		UPDATE comments SET memo = #{memo} WHERE commentno = #{commentNo}
	</update>
	
	<delete id="deleteComment" parameterType="int">
		DELETE FROM comments WHERE commentno = #{commentNo}
	</delete>

	<select id="selectListOfComments" parameterType="int" resultType="Comment">
		SELECT 
			commentno, 
			articleno, 
			c.email, 
			ifNull(name, 'Anonymous') name,
			memo, 
			regdate
		FROM comments as c left join member as m on c.email = m.email
		WHERE 
			articleno = #{articleNo}
		ORDER BY commentno DESC
	</select>

	<select id="selectOneAttachFile" parameterType="int" resultType="AttachFile">
		SELECT
			attachfileno,
			filename,
			filetype,
			filesize,
			articleno,
			email
		FROM
			attachfile
		WHERE
			attachfileno = #{attachfileno}
	</select>

	<select id="selectOneComment" parameterType="int" resultType="Comment">
		SELECT 
			commentno,
			articleno,
			email,
			memo,
			regdate 
		FROM comments 
		WHERE
			commentno = #{commentNo}
	</select>

 </mapper>

UserMapper.xml은 오라클용과 내용이 같다.

페이징 처리에 사용되는 다음 VO 클래스는 오라클용과 함께 사용해도 된다.

NumbersForPaging.java
package net.java_school.commons;

public class NumbersForPaging {
	private int totalPage;
	private int firstPage;
	private int lastPage;
	private int prevBlock;
	private int nextBlock;
	private int listItemNo;
	
	public int getTotalPage() {
		return totalPage;
	}
	public void setTotalPage(int totalPage) {
		this.totalPage = totalPage;
	}
	public int getFirstPage() {
		return firstPage;
	}
	public void setFirstPage(int firstPage) {
		this.firstPage = firstPage;
	}
	public int getLastPage() {
		return lastPage;
	}
	public void setLastPage(int lastPage) {
		this.lastPage = lastPage;
	}
	public int getPrevBlock() {
		return prevBlock;
	}
	public void setPrevBlock(int prevBlock) {
		this.prevBlock = prevBlock;
	}
	public int getNextBlock() {
		return nextBlock;
	}
	public void setNextBlock(int nextBlock) {
		this.nextBlock = nextBlock;
	}
	public int getListItemNo() {
		return listItemNo;
	}
	public void setListItemNo(int listItemNo) {
		this.listItemNo = listItemNo;
	}
	
}

페이징 처리를 위한 숫자를 생산하는 다음 클래스는 오라클용과 함께 사용해도 된다.

Paginator.java
package net.java_school.commons;

public class Paginator {

	public NumbersForPaging getNumbersForPaging(int totalRecord, int page, int numPerPage, int pagePerBlock) {
		int totalPage = totalRecord / numPerPage;
		if (totalRecord % numPerPage != 0) totalPage++;
		int totalBlock = totalPage / pagePerBlock;
		if (totalPage % pagePerBlock != 0) totalBlock++;
		int block = page / pagePerBlock;
		if (page % pagePerBlock != 0) block++;
		int firstPage = (block - 1) * pagePerBlock + 1;
		int lastPage = block * pagePerBlock;
		int prevPage = 0;
		if (block > 1) {
			prevPage = firstPage - 1;
		}
		int nextPage = 0;
		if (block < totalBlock) {
			nextPage = lastPage + 1;
		}
		if (block >= totalBlock) {
			lastPage = totalPage;
		}
		int listItemNo = totalRecord - (page - 1) * numPerPage;
		
		NumbersForPaging numbers = new NumbersForPaging();
		
		numbers.setTotalPage(totalPage);
		numbers.setFirstPage(firstPage);
		numbers.setLastPage(lastPage);
		numbers.setPrevBlock(prevPage);
		numbers.setNextBlock(nextPage);
		numbers.setListItemNo(listItemNo);
		
		return numbers;
	}

}

페이지를 위한 숫자를 생산해야 하는 컨트롤러는 Paginator 클래스를 상속하게 한다.

BbsController.java
@Controller
@RequestMapping("/bbs")
public class BbsController extends Paginator

목록과 상세보기에서 레코드를 그룹화할 때 필요한 숫자가 오라클과 MySql이 다르다. 아래 코드를 참조해 레코드을 그룹화하는 부분의 코드를 MySql에 맞게 수정한다.

BbsController.java
//목록
@GetMapping("{boardCd}")
public String list(@PathVariable(name="boardCd") String boardCd, @RequestParam(name="page") Integer page, 
    @RequestParam(name="searchWord") String searchWord, Locale locale, Model model) {
  if (page == null) page = 1;

  int numPerPage = 10;
  int pagePerBlock = 10;

  int totalRecord = boardService.getTotalRecord(boardCd, searchWord);

  NumbersForPaging numbers = this.getNumbersForPaging(totalRecord, page, numPerPage, pagePerBlock);

  //mysql
  Integer offset = (page - 1) * numPerPage;
  HashMap<String, String> map = new HashMap<String, String>();
  map.put("boardCd", boardCd);
  map.put("searchWord", searchWord);
  map.put("offset", offset.toString());
  Integer rowCount = numPerPage;
  map.put("rowCount", rowCount.toString());
  List<Article> list = boardService.getArticleList(map);

  Integer listItemNo = numbers.getListItemNo();
  Integer prevPage = numbers.getPrevBlock();
  Integer nextPage = numbers.getNextBlock();
  Integer firstPage = numbers.getFirstPage();
  Integer lastPage = numbers.getLastPage();

  model.addAttribute("list", list);
  model.addAttribute("listItemNo", listItemNo);
  model.addAttribute("prevPage", prevPage);
  model.addAttribute("nextPage", nextPage);
  model.addAttribute("firstPage", firstPage);
  model.addAttribute("lastPage", lastPage);

  String lang = locale.getLanguage();
  List<Board> boards = boardService.getBoards();
  String boardName = this.getBoardName(boardCd, lang);
  model.addAttribute("boards", boards);
  model.addAttribute("boardName", boardName);

  //boardCd는 파라미터로 전달되지 않으므로
  model.addAttribute("boardCd", boardCd);

  return "bbs/list";
}
//상세보기
@GetMapping("{boardCd}/{articleNo}")
public String view(@PathVariable(name="boardCd") String boardCd, @PathVariable(name="articleNo") Integer articleNo,   
    @RequestParam(name="page") Integer page, @RequestParam(name="searchWord") String searchWord, Locale locale, Model model) {
  if(page == null) page = 1;
  String lang = locale.getLanguage();
  boardService.increaseHit(articleNo);

  Article article = boardService.getArticle(articleNo);//상세보기에서 볼 게시글
  List<AttachFile> attachFileList = boardService.getAttachFileList(articleNo);
  Article nextArticle = boardService.getNextArticle(articleNo, boardCd, searchWord);
  Article prevArticle = boardService.getPrevArticle(articleNo, boardCd, searchWord);
  List<Comment> commentList = boardService.getCommentList(articleNo);
  String boardName = this.getBoardName(boardCd, lang);

  //상세보기에서 볼 게시글 관련 정보
  String title = article.getTitle();//제목
  String content = article.getContent();//내용
  content = content.replaceAll(WebContants.LINE_SEPARATOR, "<br />");
  int hit = article.getHit();//조회수
  String name = article.getName();//작성자 이름
  String email = article.getEmail();//작성자 ID
  Date regdate = article.getRegdate();//작성일

  model.addAttribute("title", title);
  model.addAttribute("content", content);
  model.addAttribute("hit", hit);
  model.addAttribute("name", name);
  model.addAttribute("email", email);
  model.addAttribute("regdate", regdate);
  model.addAttribute("attachFileList", attachFileList);
  model.addAttribute("nextArticle", nextArticle);
  model.addAttribute("prevArticle", prevArticle);
  model.addAttribute("commentList", commentList);

  //목록관련
  int numPerPage = 10;//페이지당 레코드 수
  int pagePerBlock = 10;//블록당 페이지 링크수

  int totalRecord = boardService.getTotalRecord(boardCd, searchWord);

  NumbersForPaging numbers = this.getNumbersForPaging(totalRecord, page, numPerPage, pagePerBlock);

  //mysql
  Integer offset = (page - 1) * numPerPage;
  HashMap<String, String> map = new HashMap<String, String>();
  map.put("boardCd", boardCd);
  map.put("searchWord", searchWord);
  map.put("offset", offset.toString());
  Integer rowCount = numPerPage;
  map.put("rowCount", rowCount.toString());
  List<Article> list = boardService.getArticleList(map);

  int listItemNo = numbers.getListItemNo();
  int prevPage = numbers.getPrevBlock();
  int nextPage = numbers.getNextBlock();
  int firstPage = numbers.getFirstPage();
  int lastPage = numbers.getLastPage();

  model.addAttribute("list", list);
  model.addAttribute("listItemNo", listItemNo);
  model.addAttribute("prevPage", prevPage);
  model.addAttribute("firstPage", firstPage);
  model.addAttribute("lastPage", lastPage);
  model.addAttribute("nextPage", nextPage);
  model.addAttribute("boardName", boardName);

  List<Board> boards = boardService.getBoards();
  model.addAttribute("boards", boards);

  //articleNo와 boardCd는 파라미터로 전달되지 않기에
  model.addAttribute("articleNo", articleNo);
  model.addAttribute("boardCd", boardCd);

  return "bbs/view";
}
참고