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*추가 요구사항(DB 연동)
1. 게시물 추가(완료)
2. 게시물 수정(완료)
3. 게시물 삭제(완료) - 1번 글 존재유무 체크 x
4. 게시물 리스팅(완료)
5. 게시물 상세보기(완료)
6. 게시판 변경=선택
- 프로그램 실행 시 게시판 자동 생성(notice, free)
- 변경은 아직.
7. 빌드 사이트
작업할 것
- db연동 외 필요없는 것 날리기
- 회원관련 기능 없음 > 날리기
- 검색 기능 없음
- 조회수 없음
html / css 작업하기
- 게시물 리스트 / 게시물 상세(상/하단) 제외
*MySQL 코드
- 작업때 사용한 코드
CREATE DATABASE site5;
USE site5;
CREATE TABLE article (
id INT(10) UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
regDate DATETIME NOT NULL,
title CHAR(100) NOT NULL,
`body` TEXT NOT NULL,
boardId INT(10) UNSIGNED NOT NULL
);
CREATE TABLE board (
id INT(10) UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
regDate DATETIME NOT NULL,
`name` CHAR(100) NOT NULL,
`code` INT(10) UNSIGNED NOT NULL
);
SHOW TABLES;
*이클립스 코드
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
import com.fasterxml.jackson.core.JsonGenerationException;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;
class Main {
public static void main(String[] args) {
App app = new App();
app.start();
}
}
//MySQL DB 연결
class DBConnection {
Connection connection;
// DB 연결
public void connect() {
String url = "jdbc:mysql://localhost:3306/site5?serverTimezone=UTC";
String user = "root";
String password = "1234";
String driverName = "com.mysql.cj.jdbc.Driver";
try {
// ① 로드(카카오 택시에 `com.mysql.cj.jdbc.Driver` 라는 실제 택시 드라이버를 등록)
// 하지만 개발자는 실제로 `com.mysql.cj.jdbc.Driver`를 다룰 일은 없다.
// 내부적으로 JDBC가 알아서 다 해주기 때문에 우리는 JDBC의 DriverManager 를 통해서 DB와의 연결을 얻으면 된다.
Class.forName(driverName);
// ② 연결
connection = (Connection) DriverManager.getConnection(url, user, password);
} catch (ClassNotFoundException e) {
// `com.mysql.cj.jdbc.Driver` 라는 클래스가 라이브러리로 추가되지 않았다면 오류발생
System.out.println("[로드 오류]\n" + e.getStackTrace());
} catch (SQLException e) {
// DB접속정보가 틀렸다면 오류발생
System.out.println("[연결 오류]\n" + e.getStackTrace());
}
}
// DB 연결 종료
public void close() {
try {
if (connection != null) {
connection.close();
}
} catch (SQLException e) {
System.out.println("[닫기 오류]\n" + e.getStackTrace());
}
}
// 게시물 추가(작성)
public int insert(String sql) {
int id = -1;
// SQL을 적는 문서파일
Statement statement = null;
// SQL의 실행결과 보고서
ResultSet rs = null;
try {
statement = connection.createStatement();
statement.executeUpdate(sql, Statement.RETURN_GENERATED_KEYS);
rs = statement.getGeneratedKeys();
if (rs.next()) {
id = rs.getInt(1);
}
} catch (SQLException e) {
System.out.println("[INSERT 쿼리 오류]\n" + e.getStackTrace());
}
try {
if (statement != null) {
statement.close();
}
if (rs != null) {
rs.close();
}
} catch (SQLException e) {
System.out.println("[INSERT 종료 오류]\n" + e.getStackTrace());
}
return id;
}
// 게시물 수정
public int update(String sql) {
// UPDATE 명령으로 몇개의 데이터가 수정되었는지
int affectedRows = 0;
// SQL을 적는 문서파일
Statement statement = null;
try {
statement = connection.createStatement();
affectedRows = statement.executeUpdate(sql);
} catch (SQLException e) {
System.err.printf("[UPDATE 쿼리 오류, %s]\n" + e.getStackTrace() + "\n", sql);
}
try {
if (statement != null) {
statement.close();
}
} catch (SQLException e) {
System.err.println("[UPDATE 종료 오류]\n" + e.getStackTrace());
}
return affectedRows;
}
// 게시물 삭제
public void delete(String sql) {
// int ret = 0;
// SQL을 적는 문서파일
Statement statement = null;
try {
statement = connection.createStatement();
statement.executeUpdate(sql);
} catch (SQLException e) {
e.printStackTrace();
}
}
// 게시물 리스트
public Map<String, Object> selectRow(String sql) {
List<Map<String, Object>> rows = selectRows(sql);
if (rows.size() > 0) {
return rows.get(0);
}
return new HashMap<>();
}
// 게시물 리스트 관련
public List<Map<String, Object>> selectRows(String sql) {
// SQL을 적는 문서파일
Statement statement = null;
ResultSet rs = null;
List<Map<String, Object>> rows = new ArrayList<>();
try {
statement = connection.createStatement();
rs = statement.executeQuery(sql);
// ResultSet 의 MetaData를 가져온다.
ResultSetMetaData metaData = rs.getMetaData();
// ResultSet 의 Column의 갯수를 가져온다.
int columnSize = metaData.getColumnCount();
// rs의 내용을 돌려준다.
while (rs.next()) {
// 내부에서 map을 초기화
Map<String, Object> row = new HashMap<>();
for (int columnIndex = 0; columnIndex < columnSize; columnIndex++) {
String columnName = metaData.getColumnName(columnIndex + 1);
// map에 값을 입력 map.put(columnName, columnName으로 getString)
row.put(columnName, rs.getObject(columnName));
}
// list에 저장
rows.add(row);
}
} catch (SQLException e) {
System.err.printf("[SELECT 쿼리 오류, %s]\n" + e.getStackTrace() + "\n", sql);
}
try {
if (statement != null) {
statement.close();
}
if (rs != null) {
rs.close();
}
} catch (SQLException e) {
System.err.println("[SELECT 종료 오류]\n" + e.getStackTrace());
}
return rows;
}
// 게시판(Board) 생성
public int insertBoard(String sql) {
int id = -1;
// SQL을 적는 문서파일
Statement statement = null;
// SQL의 실행결과 보고서
ResultSet rs = null;
try {
statement = connection.createStatement();
statement.executeUpdate(sql, Statement.RETURN_GENERATED_KEYS);
rs = statement.getGeneratedKeys();
if (rs.next()) {
id = rs.getInt(1);
}
} catch (SQLException e) {
System.out.println("[INSERT 쿼리 오류]\n" + e.getStackTrace());
}
try {
if (statement != null) {
statement.close();
}
if (rs != null) {
rs.close();
}
} catch (SQLException e) {
System.out.println("[INSERT 종료 오류]\n" + e.getStackTrace());
}
return id;
}
// int값 반환
public int selectRowIntValue(String sql) {
Map<String, Object> row = selectRow(sql);
for (String key : row.keySet()) {
Object value = row.get(key);
if (value instanceof String) {
return Integer.parseInt((String) value);
}
if (value instanceof Long) {
return (int) (long) value;
} else {
return (int) value;
}
}
return -1;
}
// String값 반환
public String selectRowStringValue(String sql) {
Map<String, Object> row = selectRow(sql);
for (String key : row.keySet()) {
Object value = row.get(key);
return value + "";
}
return "";
}
// Boolean값 반환
public boolean selectRowBooleanValue(String sql) {
int rs = selectRowIntValue(sql);
return rs == 1;
}
}
// Session
// 현재 사용자가 이용중인 정보
// 이 안의 정보는 사용자가 프로그램을 사용할 때 동안은 계속 유지된다.
class Session {
private Board currentBoard;
public Board getCurrentBoard() {
return currentBoard;
}
public void setCurrentBoard(Board currentBoard) {
this.currentBoard = currentBoard;
}
}
// Factory
// 프로그램 전체에서 공유되는 객체 리모콘을 보관하는 클래스
class Factory {
private static Session session;
private static DB db;
private static BuildService buildService;
private static ArticleService articleService;
private static ArticleDao articleDao;
private static Scanner scanner;
private static DBConnection dbConnection;
// DB 연동 관련
public static DBConnection getDBConnection() {
if (dbConnection == null) {
dbConnection = new DBConnection();
}
return dbConnection;
}
// 세션
public static Session getSession() {
if (session == null) {
session = new Session();
}
return session;
}
// 스캐너
public static Scanner getScanner() {
if (scanner == null) {
scanner = new Scanner(System.in);
}
return scanner;
}
public static DB getDB() {
if (db == null) {
db = new DB();
}
return db;
}
public static ArticleService getArticleService() {
if (articleService == null) {
articleService = new ArticleService();
}
return articleService;
}
public static ArticleDao getArticleDao() {
if (articleDao == null) {
articleDao = new ArticleDao();
}
return articleDao;
}
public static BuildService getBuildService() {
if (buildService == null) {
buildService = new BuildService();
}
return buildService;
}
}
// App
class App {
private Map<String, Controller> controllers;
// 컨트롤러 만들고 한곳에 정리
// 나중에 컨트롤러 이름으로 쉽게 찾아쓸 수 있게 하려고 Map 사용
void initControllers() {
controllers = new HashMap<>();
controllers.put("build", new BuildController());
controllers.put("article", new ArticleController());
}
public App() {
// 컨트롤러 등록
initControllers();
// DB 연동 (App 실행 시 연동)
Factory.getDBConnection().connect();
// 게시판(Board) 생성
Factory.getArticleService().makeBoard("notice", "1");
Factory.getArticleService().makeBoard("free", "2");
// 현재 게시판을 1번 게시판으로 선택
Factory.getSession().setCurrentBoard(Factory.getArticleService().getBoard(1));
}
public void start() {
while (true) {
System.out.printf("게시판 명령어 : ");
String command = Factory.getScanner().nextLine().trim();
if (command.length() == 0) {
continue;
} else if (command.equals("exit")) {
break;
}
Request reqeust = new Request(command);
if (reqeust.isValidRequest() == false) {
continue;
}
if (controllers.containsKey(reqeust.getControllerName()) == false) {
continue;
}
controllers.get(reqeust.getControllerName()).doAction(reqeust);
}
// DB 연동 종료
Factory.getDBConnection().close();
// 스캐너 종료
Factory.getScanner().close();
}
}
// Request
class Request {
private String requestStr;
private String controllerName;
private String actionName;
private String arg1;
private String arg2;
private String arg3;
boolean isValidRequest() {
return actionName != null;
}
// 명령어 입력 받으면 분할
Request(String requestStr) {
this.requestStr = requestStr;
String[] requestStrBits = requestStr.split(" ");
this.controllerName = requestStrBits[0];
if (requestStrBits.length > 1) {
this.actionName = requestStrBits[1];
}
if (requestStrBits.length > 2) {
this.arg1 = requestStrBits[2];
}
if (requestStrBits.length > 3) {
this.arg2 = requestStrBits[3];
}
if (requestStrBits.length > 4) {
this.arg3 = requestStrBits[4];
}
}
public String getControllerName() {
return controllerName;
}
public void setControllerName(String controllerName) {
this.controllerName = controllerName;
}
public String getActionName() {
return actionName;
}
public void setActionName(String actionName) {
this.actionName = actionName;
}
public String getArg1() {
return arg1;
}
public void setArg1(String arg1) {
this.arg1 = arg1;
}
public String getArg2() {
return arg2;
}
public void setArg2(String arg2) {
this.arg2 = arg2;
}
public String getArg3() {
return arg3;
}
public void setArg3(String arg3) {
this.arg3 = arg3;
}
}
// Controller
abstract class Controller {
abstract void doAction(Request reqeust);
}
// ArticleController
class ArticleController extends Controller {
private ArticleService articleService;
ArticleController() {
articleService = Factory.getArticleService();
}
public void doAction(Request reqeust) {
if (reqeust.getActionName().equals("write")) {
actionWrite(reqeust);
} else if (reqeust.getActionName().equals("modify")) {
actionModify(reqeust, reqeust.getArg1());
} else if (reqeust.getActionName().equals("delete")) {
actionDelete(reqeust, reqeust.getArg1());
} else if (reqeust.getActionName().equals("list")) {
actionList(reqeust);
} else if (reqeust.getActionName().equals("detail")) {
actionDetail(reqeust, reqeust.getArg1());
} else if (reqeust.getActionName().equals("changeboard")) {
System.out.println("게시판 목록 = 공지사항 : 'notice' / 자유게시판 : 'free' ");
actionChangBoard(reqeust);
}
}
// 게시물 추가(작성)(DB연동 완료)
private void actionWrite(Request reqeust) {
System.out.printf("제목 : ");
String title = Factory.getScanner().nextLine();
System.out.printf("내용 : ");
String body = Factory.getScanner().nextLine();
// 현재 게시판 id 가져오기
int boardId = Factory.getSession().getCurrentBoard().getId();
int newId = articleService.write(boardId, title, body);
System.out.printf("%d번 글이 생성되었습니다.\n", newId);
}
// 게시물 수정(DB연동 완료)
private void actionModify(Request reqeust, String arg1) {
System.out.printf("제목 : ");
String title = Factory.getScanner().nextLine();
System.out.printf("내용 : ");
String body = Factory.getScanner().nextLine();
articleService.modify(title, body, arg1);
int id = Integer.parseInt(arg1);
System.out.printf("%d번 글이 수정되었습니다.\n", id);
}
// 게시물 삭제(DB연동 완료) - 해당 게시물 존재여부 체크x
private void actionDelete(Request reqeust, String arg1) {
int id = Integer.parseInt(arg1);
articleService.delete(id);
System.out.printf("%d번 글이 삭제되었습니다.\n", id);
}
// 게시물 리스트(전체)(DB연동 완료)
private void actionList(Request reqeust) {
List<Article> articles = articleService.getArticles();
System.out.println("== 게시물 리스트 시작 ==");
for (Article article : articles) {
System.out.printf("id : %d, boardId : %d, regDate : %s, title : %s, body : %s\n", article.getId(),
article.getBoardId(), article.getRegDate(), article.getTitle(), article.getBody());
}
System.out.println("== 게시물 리스트 끝 ==");
}
// 게시물 상세보기(DB연동 완료)
private void actionDetail(Request reqeust, String arg1) {
int id = Integer.parseInt(arg1);
List<Article> articles = articleService.getArticlesDetail(id);
System.out.println("== 게시물 상세보기 시작 ==");
for (Article article : articles) {
System.out.printf("id : %d, boardId : %d, regDate : %s, title : %s, body : %s\n", article.getId(),
article.getBoardId(), article.getRegDate(), article.getTitle(), article.getBody());
}
System.out.println("== 게시물 상세보기 끝 ==");
}
// 게시판 변경
private void actionChangBoard(Request reqeust) {
System.out.printf("변경할 게시판 : ");
String name = Factory.getScanner().nextLine();
if (name.equals("notice")) {
articleService.getChangeBoard("notice");
} else if (name.equals("free")) {
articleService.getChangeBoard("free");
} else {
System.out.println("잘못된 명령어 입니다.");
}
}
}
class BuildController extends Controller {
private BuildService buildService;
BuildController() {
buildService = Factory.getBuildService();
}
@Override
void doAction(Request reqeust) {
if (reqeust.getActionName().equals("site")) {
actionSite(reqeust);
actionCreatMain();
actionCreatLogin();
actionCreatStatistics();
}
}
private void actionSite(Request reqeust) {
System.out.println("site 생성 완료");
buildService.buildSite();
}
private void actionCreatMain() {
buildService.creatMain();
}
private void actionCreatLogin() {
buildService.creatLogin();
}
private void actionCreatStatistics() {
buildService.creatStatistics();
}
}
// Service
class BuildService {
ArticleService articleService;
BuildService() {
articleService = Factory.getArticleService();
}
// 사이트 통계 화면 생성
public void creatStatistics() {
Util.makeDir("site");
Util.makeDir("site/article");
String head = Util.getFileContents("site_template/part/head.html");
String foot = Util.getFileContents("site_template/part/foot.html");
String fileName = "Statistics.html";
String html = "";
String template = Util.getFileContents("site_template/article/Statistics.html");
List<Article> articles = articleService.getArticles();
html += "<h2 class=\"t1-h\">사이트 통계</h2>";
html += "<table border=1>";
html += "<thead>";
html += "<tr>";
html += "<td class=\"td1\">전체 게시물 수</td>";
html += "<td colspan=3>" + "</td>";
html += "</tr>";
html += "<tr>";
html += "<td class=\"td1\">공지사항 게시물 수</td>";
html += "<td colspan=3>" + "</td>";
html += "</tr>";
html += "<tr>";
html += "<td class=\"td1\">자유게시판 게시물 수</td>";
html += "<td colspan=3>" + "</td>";
html += "</tr>";
html = template.replace("${TR}", html);
html = head + html + foot;
Util.writeFileContents("site/article/" + fileName, html);
}
// 사이트 로그인 화면 생성
public void creatLogin() {
Util.makeDir("site");
Util.makeDir("site/article");
String head = Util.getFileContents("site_template/part/head.html");
String foot = Util.getFileContents("site_template/part/foot.html");
String fileName = "login.html";
String html = "";
String template = Util.getFileContents("site_template/article/login.html");
html = template.replace("${TR}", html);
html = head + html + foot;
Util.writeFileContents("site/article/" + fileName, html);
}
// 사이트 홈 화면 생성
public void creatMain() {
Util.makeDir("site");
Util.makeDir("site/article");
String head = Util.getFileContents("site_template/part/head.html");
String foot = Util.getFileContents("site_template/part/foot.html");
String fileName = "main.html";
String html = "";
String template = Util.getFileContents("site_template/article/main.html");
html += "<style> .main-box {text-align: center; padding: 100px;}";
html += ".main-box > img{width: 800px; border-radius: 50px;}</style>";
html += "<nav class=\"main-box\">";
html += "<img src=\"main\\images\\main1.jpg\" alt=\"\"></nav>";
html = head + html + foot;
Util.writeFileContents("site/article/" + fileName, html);
}
// 리스트 / 상세보기 사이트 생성
public void buildSite() {
Util.makeDir("site");
Util.makeDir("site/article");
String head = Util.getFileContents("site_template/part/head.html");
String foot = Util.getFileContents("site_template/part/foot.html");
// 각 게시판 별 게시물리스트 페이지 생성(미 구현)
List<Board> boards = articleService.getBoards();
for (Board board : boards) {
String fileName = board.getCode() + "-list-1.html";
String html = "";
List<Article> articles = articleService.getArticlesByBoardCode(board.getCode());
String template = Util.getFileContents("site_template/article/list.html");
System.out.println("boardCode : " + board.getCode() + "생성 완료");
for (Article article : articles) {
html += "<tr>";
html += "<td>" + article.getId() + "</td>";
html += "<td><a href=\"" + article.getId() + ".html\">" + article.getTitle() + "</a></td>";
html += "<td>" + article.getRegDate() + "</td>";
html += "</tr>";
}
html = template.replace("${TR}", html);
html = head + html + foot;
Util.writeFileContents("site/article/" + fileName, html);
}
// 게시물 별(상세보기) 파일 생성 (완료)
List<Article> articles = articleService.getArticles();
for (Article article : articles) {
String template = Util.getFileContents("site_template/article/detail.html");
String html = "";
html += "<h2 class=\"t1-h\">상세보기</h2>";
html += "<table border=1>";
html += "<thead>";
html += "<tr>";
html += "<td class=\"td1\" colspan=4>게시물 상세보기</td>";
html += "</tr>";
html += "<tr>";
html += "<td class=\"td1\">게시물 번호</td>";
html += "<td colspan=3>" + article.getId() + "</td>";
html += "</tr>";
html += "<tr>";
html += "<td class=\"td1\">제목</td>";
html += "<td colspan=3>" + article.getTitle() + "</td>";
html += "</tr>";
html += "</tr>";
html += "<td class=\"td1\">내용</td>";
html += "<td colspan=3>" + article.getBody() + "</td>";
html += "</tr>";
html += "<tr>";
html += "<td class=\"td1\">작성일자</td>";
html += "<td colspan=3>" + article.getRegDate() + "</td>";
html += "</tr>";
html = template.replace("${TR}", html);
html = head + html + foot;
Util.writeFileContents("site/article/" + article.getId() + ".html", html);
}
}
}
class ArticleService {
private ArticleDao articleDao;
ArticleService() {
articleDao = Factory.getArticleDao();
}
// 게시물 추가(작성)
public int write(int boardId, String title, String body) {
Article article = new Article(boardId, title, body);
return articleDao.save(article);
}
// 게시물 수정
public void modify(String title, String body, String arg1) {
int id = Integer.parseInt(arg1);
Article article = new Article(title, body);
articleDao.modify(article, id);
}
// 게시물 삭제
public void delete(int id) {
articleDao.delete(id);
}
// 게시물 리스트(전체)
public List<Article> getArticles() {
return articleDao.getArticles();
}
// 게시물 상세보기
public List<Article> getArticlesDetail(int id) {
return articleDao.getArticlesDetail(id);
}
// 게시판 변경관련(미구현)
public void getChangeBoard(String boardName) {
articleDao.changeBoard(boardName);
}
// 게시판 생성(Board)
public int makeBoard(String boardName, String boardCode) {
String name = boardName;
String code = boardCode;
Board oldBoard = articleDao.getBoardByCode(code);
if (oldBoard != null) {
return -1;
}
Board board = new Board(name, code);
return articleDao.saveBoard(board);
}
public List<Article> getArticlesByBoardCode(String code) {
return articleDao.getArticlesByBoardCode(code);
}
public List<Board> getBoards() {
return articleDao.getBoards();
}
public Board getBoard(int id) {
return articleDao.getBoard(id);
}
}
// Dao
class ArticleDao {
DB db;
DBConnection dbConnection;
ArticleDao() {
db = Factory.getDB();
dbConnection = Factory.getDBConnection();
}
// 게시물 추가(DB연동)
public int save(Article article) {
String sql = "";
sql += "INSERT INTO article ";
sql += String.format("SET regDate = '%s'", article.getRegDate());
sql += String.format(", title = '%s'", article.getTitle());
sql += String.format(", `body` = '%s'", article.getBody());
sql += String.format(", boardId = '%d'", article.getBoardId());
return dbConnection.insert(sql);
}
// 게시물 수정(DB연동)
public void modify(Article article, int id) {
String sql = "";
sql += "UPDATE article ";
sql += String.format("SET title = '%s'", article.getTitle());
sql += String.format(", `body` = '%s'", article.getBody());
sql += String.format(" WHERE id = %d", id);
dbConnection.update(sql);
}
// 게시물 삭제(DB연동)
public void delete(int id) {
// DELETE FROM article WHERE id = 2;
String sql = "";
sql += "DELETE FROM ";
sql += String.format("article WHERE id = %d", id);
dbConnection.delete(sql);
}
// 게시물 리스트(전체)
public List<Article> getArticles() {
List<Map<String, Object>> rows = dbConnection.selectRows("SELECT * FROM article ORDER by id DESC");
List<Article> articles = new ArrayList<>();
for (Map<String, Object> row : rows) {
articles.add(new Article(row));
}
return articles;
}
// 게시물 상세보기
public List<Article> getArticlesDetail(int id) {
List<Map<String, Object>> rows = dbConnection.selectRows("SELECT * FROM article");
List<Article> articles = new ArrayList<>();
Map<String, Object> row = rows.get(id - 1);
Article article = new Article();
String regDate = row.get("regDate") + "";
article.setId((int) (long) row.get("id"));
article.setRegDate(regDate);
article.setTitle((String) row.get("title"));
article.setBody((String) row.get("body"));
article.setBoardId((int) (long) row.get("boardId"));
articles.add(article);
return articles;
}
// 게시판(Board) 변경(미 구현)
public void changeBoard(String boardName) {
}
// 게시판(Board) 자동생성(notice, free)
public int saveBoard(Board board) {
String sql = "";
sql += "INSERT INTO board ";
sql += String.format("SET regDate = '%s'", board.getRegDate());
sql += String.format(", `name` = '%s'", board.getName());
sql += String.format(", `code` = '%d'", Integer.parseInt(board.getCode()));
return dbConnection.insertBoard(sql);
}
// 게시판(Board) 가져오기
public List<Board> getBoards() {
List<Map<String, Object>> rows = dbConnection.selectRows("SELECT * FROM board");
List<Board> articles = new ArrayList<>();
for (Map<String, Object> row : rows) {
articles.add(new Board(row));
}
return articles;
}
public List<Article> getArticlesByBoardCode(String code) {
return db.getArticlesByBoardCode(code);
}
public Board getBoardByCode(String code) {
return db.getBoardByCode(code);
}
public Board getBoard(int id) {
return db.getBoard(id);
}
}
// DB
class DB {
private Map<String, Table> tables;
public DB() {
String dbDirPath = getDirPath();
Util.makeDir(dbDirPath);
tables = new HashMap<>();
tables.put("article", new Table<Article>(Article.class, dbDirPath));
tables.put("board", new Table<Board>(Board.class, dbDirPath));
}
public List<Article> getArticlesByBoardCode(String code) {
Board board = getBoardByCode(code);
// free => 2
// notice => 1
List<Article> articles = getArticles();
List<Article> newArticles = new ArrayList<>();
for (Article article : articles) {
if (article.getBoardId() == board.getId()) {
newArticles.add(article);
}
}
return newArticles;
}
public Board getBoardByCode(String code) {
List<Board> boards = getBoards();
for (Board board : boards) {
if (board.getCode().equals(code)) {
return board;
}
}
return null;
}
public List<Board> getBoards() {
return tables.get("board").getRows();
}
public int saveBoard(Board board) {
return tables.get("board").saveRow(board);
}
public String getDirPath() {
return "db";
}
public Board getBoard(int id) {
return (Board) tables.get("board").getRow(id);
}
public List<Article> getArticles() {
return tables.get("article").getRows();
}
public int saveArticle(Article article) {
return tables.get("article").saveRow(article);
}
public void backup() {
for (String tableName : tables.keySet()) {
Table table = tables.get(tableName);
table.backup();
}
}
}
// Table
class Table<T> {
private Class<T> dataCls;
private String tableName;
private String tableDirPath;
public Table(Class<T> dataCls, String dbDirPath) {
this.dataCls = dataCls;
this.tableName = Util.lcfirst(dataCls.getCanonicalName());
this.tableDirPath = dbDirPath + "/" + this.tableName;
Util.makeDir(tableDirPath);
}
public void backup() {
// TODO Auto-generated method stub
}
private String getTableName() {
return tableName;
}
public int saveRow(T data) {
Dto dto = (Dto) data;
if (dto.getId() == 0) {
int lastId = getLastId();
int newId = lastId + 1;
dto.setId(newId);
setLastId(newId);
}
String rowFilePath = getRowFilePath(dto.getId());
Util.writeJsonFile(rowFilePath, data);
return dto.getId();
};
private String getRowFilePath(int id) {
return tableDirPath + "/" + id + ".json";
}
private void setLastId(int lastId) {
String filePath = getLastIdFilePath();
Util.writeFileContents(filePath, lastId);
}
private int getLastId() {
String filePath = getLastIdFilePath();
if (Util.isFileExists(filePath) == false) {
int lastId = 0;
Util.writeFileContents(filePath, lastId);
return lastId;
}
return Integer.parseInt(Util.getFileContents(filePath));
}
private String getLastIdFilePath() {
return this.tableDirPath + "/lastId.txt";
}
public T getRow(int id) {
return (T) Util.getObjectFromJson(getRowFilePath(id), dataCls);
}
List<T> getRows() {
int lastId = getLastId();
List<T> rows = new ArrayList<>();
for (int id = 1; id <= lastId; id++) {
T row = getRow(id);
if (row != null) {
rows.add(row);
}
}
return rows;
};
}
// DTO
abstract class Dto {
private int id;
private String regDate;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getRegDate() {
return regDate;
}
public void setRegDate(String regDate) {
this.regDate = regDate;
}
Dto() {
this(0);
}
Dto(int id) {
this(id, Util.getNowDateStr());
}
Dto(int id, String regDate) {
this.id = id;
this.regDate = regDate;
}
}
class Board extends Dto {
private String name;
private String code;
public Board() {
}
// 보드 조회(전체)
public Board(Map<String, Object> row) {
String regDate = row.get("regDate") + "";
this.setId((int) (long) row.get("id"));
this.setRegDate(regDate);
this.setName((String) row.get("name"));
this.setCode((String) row.get("" + code));
}
public Board(String name, String code) {
this.name = name;
this.code = code;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
}
class Article extends Dto {
private int boardId;
private String title;
private String body;
public Article() {
}
public Article(String title, String body) {
this.title = title;
this.body = body;
}
public Article(int boardId, String title, String body) {
this.boardId = boardId;
this.title = title;
this.body = body;
}
// 게시물 조회(전체)
public Article(Map<String, Object> row) {
String regDate = row.get("regDate") + "";
this.setId((int) (long) row.get("id"));
this.setRegDate(regDate);
this.setTitle((String) row.get("title"));
this.setBody((String) row.get("body"));
this.setBoardId((int) (long) row.get("boardId"));
}
public int getBoardId() {
return boardId;
}
public void setBoardId(int boardId) {
this.boardId = boardId;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getBody() {
return body;
}
public void setBody(String body) {
this.body = body;
}
@Override
public String toString() {
return "Article [boardId=" + boardId + ", title=" + title + ", body=" + body + ", getId()=" + getId()
+ ", getRegDate()=" + getRegDate() + "]";
}
}
class ArticleReply extends Dto {
private int id;
private String regDate;
private int articleId;
private String body;
ArticleReply() {
}
public int getArticleId() {
return articleId;
}
public void setArticleId(int articleId) {
this.articleId = articleId;
}
public String getBody() {
return body;
}
public void setBody(String body) {
this.body = body;
}
}
// Util
class Util {
// 현재날짜문장
public static String getNowDateStr() {
Calendar cal = Calendar.getInstance();
SimpleDateFormat Date = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String dateStr = Date.format(cal.getTime());
return dateStr;
}
// 파일에 내용쓰기
public static void writeFileContents(String filePath, int data) {
writeFileContents(filePath, data + "");
}
// 첫 문자 소문자화
public static String lcfirst(String str) {
String newStr = "";
newStr += str.charAt(0);
newStr = newStr.toLowerCase();
return newStr + str.substring(1);
}
// 파일이 존재하는지
public static boolean isFileExists(String filePath) {
File f = new File(filePath);
if (f.isFile()) {
return true;
}
return false;
}
// 파일내용 읽어오기
public static String getFileContents(String filePath) {
String rs = null;
try {
// 바이트 단위로 파일읽기
FileInputStream fileStream = null; // 파일 스트림
fileStream = new FileInputStream(filePath);// 파일 스트림 생성
// 버퍼 선언
byte[] readBuffer = new byte[fileStream.available()];
while (fileStream.read(readBuffer) != -1) {
}
rs = new String(readBuffer);
fileStream.close(); // 스트림 닫기
} catch (Exception e) {
e.getStackTrace();
}
return rs;
}
// 파일 쓰기
public static void writeFileContents(String filePath, String contents) {
BufferedOutputStream bs = null;
try {
bs = new BufferedOutputStream(new FileOutputStream(filePath));
bs.write(contents.getBytes()); // Byte형으로만 넣을 수 있음
} catch (Exception e) {
e.getStackTrace();
} finally {
try {
bs.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
// Json안에 있는 내용을 가져오기
public static Object getObjectFromJson(String filePath, Class cls) {
ObjectMapper om = new ObjectMapper();
Object obj = null;
try {
obj = om.readValue(new File(filePath), cls);
} catch (JsonParseException e) {
e.printStackTrace();
} catch (JsonMappingException e) {
e.printStackTrace();
} catch (FileNotFoundException e) {
} catch (IOException e) {
e.printStackTrace();
}
return obj;
}
public static void writeJsonFile(String filePath, Object obj) {
ObjectMapper om = new ObjectMapper();
try {
om.writeValue(new File(filePath), obj);
} catch (JsonGenerationException e) {
e.printStackTrace();
} catch (JsonMappingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public static void makeDir(String dirPath) {
File dir = new File(dirPath);
if (!dir.exists()) {
dir.mkdir();
}
}
}반응형
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