[Spring] Spring MVC 구조 자유게시판 만들기 - (1)

 개념 정리

 

 

# request 

구분	일반 MVC 구조	Spring
차이점	1. 사용자 보내준 데이터를 받을 수 있다        → getParameter()    2. 결과값을 모아서 전송해준 기능     3. request안에는 사용자의 정보 (IP,PORT) 존재	1. 스프링에서 메소드의 매개변수를 이용해서 데이터값을 받는다     2. Model 인터페이스를 이용해서 데이터 전송     3. 보안에 목적
예시	* HttpSession 생성 ( MVC에서 사용 )    public String login(HttpServletRequest request)    {    HttpSession session=request.getSession();    }	* Spring      public String login(HttpSession session)    {    }          → 매개변수는 순서가 없다

  →   ※ Spring에서는 request를 사용하지 않는다 

 

 

# Spring → 데이터를 받는 경우 
  - 일반 데이터 (String,int...)
       VO단위로 데이터를 받는다 → <input type=text name=subject>
                                                                               VO에 변수명이 동일
  - List로 데이터를 받을 수 있다 => <input type=text name=name[0]>                                               
  - 같은 값 여러개  ==> String[]
     <input type=checkbox name=cb>
     <input type=checkbox name=cb>
     <input type=checkbox name=cb>

 

 

 

 

 

 코드

#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>com.sist</groupId>
    <artifactId>web</artifactId>
    <name>OnLineSpringMVCStudy5</name>
    <packaging>war</packaging>
    <version>1.0.0-BUILD-SNAPSHOT</version>
    <properties>
      <!-- Spring 5 -->
      <java-version>1.8</java-version>
      <org.springframework-version>5.1.5.RELEASE</org.springframework-version>
      <org.aspectj-version>1.6.10</org.aspectj-version>
      <org.slf4j-version>1.6.6</org.slf4j-version>
   </properties>
   <repositories>
      <repository>
          <id>mesir-repo</id>
          <url>http://mesir.googlecode.com/svn/trunk/mavenrepo</url>
      </repository>
   </repositories>
   <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>
       <!-- Jsoup -->
       <dependency>
          <groupId>org.jsoup</groupId>
          <artifactId>jsoup</artifactId>
          <version>1.12.1</version>
      </dependency>   
      <!-- JSON -->
      <dependency>
          <groupId>com.googlecode.json-simple</groupId>
          <artifactId>json-simple</artifactId>
          <version>1.1.1</version>
      </dependency>
      <!-- JAXB -->
      <dependency>
          <groupId>javax.xml.bind</groupId>
          <artifactId>jaxb-api</artifactId>
          <version>2.3.1</version>
      </dependency>
      <!-- AspectJ -->
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-context-support</artifactId>
         <version>5.1.5.RELEASE</version>
      </dependency>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-context</artifactId>
          <version>5.1.5.RELEASE</version>
      </dependency>
      <!-- lombok -->
      <dependency>
          <groupId>org.projectlombok</groupId>
          <artifactId>lombok</artifactId>
          <version>1.18.8</version>
          <scope>provided</scope>
      </dependency>
      <!-- websocket -->
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-websocket</artifactId>
          <version>5.1.5.RELEASE</version>
      </dependency>
      
      <!-- <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-expression</artifactId>
         <version>5.1.5.RELEASE</version>
      </dependency> -->
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-jdbc</artifactId>
         <version>5.1.5.RELEASE</version>
      </dependency>
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-instrument</artifactId>
         <version>5.1.5.RELEASE</version>
      </dependency>
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-aspects</artifactId>
         <version>5.1.5.RELEASE</version>
      </dependency>
      <!-- <dependency>
         <groupId>com.oracle</groupId>
         <artifactId>ojdbc14</artifactId>
         <version>10.2.0.4.0</version>
      </dependency> -->
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-jms</artifactId>
         <version>5.1.5.RELEASE</version>
      </dependency>
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-orm</artifactId>
         <version>5.1.5.RELEASE</version>
      </dependency>
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-oxm</artifactId>
         <version>5.1.5.RELEASE</version>
      </dependency>
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-test</artifactId>
         <version>5.1.5.RELEASE</version>
      </dependency>
      <!-- <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-webmvc-portlet</artifactId>
         <version>5.1.5.RELEASE</version>
      </dependency> -->
      
      <dependency>
         <groupId>taglibs</groupId>
         <artifactId>standard</artifactId>
         <version>1.1.2</version>
      </dependency>
 
      <dependency>
         <groupId>org.nuiton.thirdparty</groupId>
         <artifactId>Rserve</artifactId>
         <version>1.7-3</version>
      </dependency>
      <dependency>
         <groupId>org.nuiton.thirdparty</groupId>
         <artifactId>REngine</artifactId>
         <version>1.7-3</version>
      </dependency>
      <!-- 
         @Select("<script>SELECT~~ <if test="">")
       -->
      <dependency>
         <groupId>org.mybatis</groupId>
         <artifactId>mybatis</artifactId>
         <version>3.2.8</version>
      </dependency>
      <dependency>
         <groupId>org.mybatis</groupId>
         <artifactId>mybatis-spring</artifactId>
         <version>1.2.0</version>
      </dependency>
      <dependency>
         <groupId>org.mongodb</groupId>
         <artifactId>mongo-java-driver</artifactId>
         <version>2.13.0-rc1</version>
      </dependency>
      <dependency>
         <groupId>org.nuiton.thirdparty</groupId>
         <artifactId>JRI</artifactId>
         <version>0.9-6</version>
      </dependency>
      <dependency>
         <groupId>com.github.lucarosellini.rJava</groupId>
         <artifactId>JRIEngine</artifactId>
         <version>0.9-7</version>
      </dependency>
      <dependency>
         <groupId>aopalliance</groupId>
         <artifactId>aopalliance</artifactId>
         <version>1.0</version>
      </dependency>
      <dependency>
         <groupId>asm</groupId>
         <artifactId>asm</artifactId>
         <version>3.3.1</version>
      </dependency>
      <dependency>
         <groupId>c3p0</groupId>
         <artifactId>c3p0</artifactId>
         <version>0.9.1.2</version>
      </dependency>
      <dependency>
         <groupId>cglib</groupId>
         <artifactId>cglib</artifactId>
         <version>3.1</version>
      </dependency>
      <dependency>
         <groupId>cglib</groupId>
         <artifactId>cglib-nodep</artifactId>
         <version>3.1</version>
      </dependency>
      <dependency>
         <groupId>commons-collections</groupId>
         <artifactId>commons-collections</artifactId>
         <version>3.2.1</version>
      </dependency>
      <dependency>
         <groupId>commons-dbcp</groupId>
         <artifactId>commons-dbcp</artifactId>
         <version>1.4</version>
      </dependency>
      <dependency>
         <groupId>commons-fileupload</groupId>
         <artifactId>commons-fileupload</artifactId>
         <version>1.3.1</version>
      </dependency>
      <dependency>
         <groupId>commons-io</groupId>
         <artifactId>commons-io</artifactId>
         <version>2.4</version>
      </dependency>
      <dependency>
         <groupId>commons-logging</groupId>
         <artifactId>commons-logging</artifactId>
         <version>1.2</version>
      </dependency>
      <dependency>
         <groupId>commons-pool</groupId>
         <artifactId>commons-pool</artifactId>
         <version>1.6</version>
      </dependency>
      <dependency>
         <groupId>org.javassist</groupId>
         <artifactId>javassist</artifactId>
         <version>3.18.2-GA</version>
      </dependency>
     
      <dependency>
         <groupId>org.nuiton.thirdparty</groupId>
         <artifactId>Rserve</artifactId>
         <version>1.7-3</version>
      </dependency>
      <dependency>
         <groupId>org.nuiton.thirdparty</groupId>
         <artifactId>REngine</artifactId>
         <version>1.7-3</version>
      </dependency>
      <dependency>
         <groupId>org.twitter4j</groupId>
         <artifactId>twitter4j-core</artifactId>
         <version>4.0.2</version>
      </dependency>
        <dependency>
         <groupId>org.twitter4j</groupId>
         <artifactId>twitter4j-stream</artifactId>
         <version>4.0.2</version>
      </dependency>
        <dependency>
         <groupId>javax.validation</groupId>
         <artifactId>validation-api</artifactId>
         <version>1.1.0.Final</version>
      </dependency>
       <!--  <dependency>
         <groupId>com.oracle</groupId>
         <artifactId>ojdbc14</artifactId>
         <version>10.2.0.4.0</version>
      </dependency> -->
        
      <!-- End -->   
      <!-- AspectJ -->
      <dependency>
         <groupId>org.aspectj</groupId>
         <artifactId>aspectjrt</artifactId>
         <version>${org.aspectj-version}</version>
      </dependency>   
       <!-- AOP -->
      <dependency>
         <groupId>org.aspectj</groupId>
         <artifactId>aspectjweaver</artifactId>
         <version>1.6.5</version>
      </dependency>
      <!-- AOP -->
      <dependency>
         <groupId>aopalliance</groupId>
         <artifactId>aopalliance</artifactId>
         <version>1.0</version>
      </dependency>
      <!-- AOP -->
      <dependency>
      <groupId>asm</groupId>
      <artifactId>asm</artifactId>
      <version>3.1</version>
   </dependency>
      <!-- tiles  -->
      <dependency>
         <groupId>org.apache.tiles</groupId>
         <artifactId>tiles-core</artifactId>
         <version>2.2.2</version>
      </dependency>
      <dependency>
         <groupId>org.apache.tiles</groupId>
         <artifactId>tiles-jsp</artifactId>
         <version>2.2.2</version>
      </dependency>
      <dependency>
         <groupId>org.apache.tiles</groupId>
         <artifactId>tiles-api</artifactId>
         <version>2.2.2</version>
      </dependency>
      
      <dependency>
         <groupId>org.apache.tiles</groupId>
         <artifactId>tiles-servlet</artifactId>
         <version>2.2.2</version>
      </dependency>
      
      <dependency>
         <groupId>commons-beanutils</groupId>
         <artifactId>commons-beanutils</artifactId>
         <version>1.9.2</version>
      </dependency>
      
      <dependency>
         <groupId>commons-digester</groupId>
         <artifactId>commons-digester</artifactId>
         <version>2.1</version>
      </dependency>
      
      <dependency>
         <groupId>org.antlr</groupId>
         <artifactId>antlr-runtime</artifactId>
         <version>3.5.2</version>
      </dependency>
      <!-- XML -->
      <dependency>
         <groupId>com.sun.xml.bind</groupId>
         <artifactId>jaxb-core</artifactId>
         <version>2.2.11</version>
      </dependency>
      <dependency>
         <groupId>com.sun.xml.bind</groupId>
         <artifactId>jaxb-impl</artifactId>
         <version>2.2.11</version>
      </dependency>
 
      <dependency>
         <groupId>javax.xml.bind</groupId>
         <artifactId>jaxb-api</artifactId>
         <version>2.2.11</version>
      </dependency>
      
      <!-- 
         jaxb-core
         jaxb-impl
         jaxb-api
         
         json-simple
         commons-lang
         ezmorph
       -->
      <!-- JSON -->
      <dependency>
         <groupId>com.googlecode.json-simple</groupId>
         <artifactId>json-simple</artifactId>
         <version>1.1.1</version>
      </dependency>
      <dependency>
         <groupId>commons-lang</groupId>
         <artifactId>commons-lang</artifactId>
         <version>2.6</version>
      </dependency>
      <dependency>
         <groupId>net.sf.ezmorph</groupId>
         <artifactId>ezmorph</artifactId>
         <version>1.0.6</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>4.7</version>
         <scope>test</scope>
      </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>
                <!-- Spring 5 -->
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.7.0</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</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>
 

 - 귀찮아도 꼭 환경설정으로 이 값으로 변경해주어야 합니다.

 

 

 

# 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">
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- 
            XML파일이 여러개를 사용할 때 
         -->
         <init-param>
           <param-name>contextConfigLocation</param-name>
           <param-value>/WEB-INF/config/application-*.xml</param-value>
         </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
    <!-- 한글 변환 ( request를 사용하지 않는다  )-->
      <filter>
            <filter-name>encodingFilter</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>
            <init-param>
                <param-name>forceEncoding</param-name>
                <param-value>true</param-value>
            </init-param>
        </filter>
        
        <!-- /의 형식으로 시작하는 url에 대하여 UTF-8로 인코딩 -->
        <filter-mapping>
            <filter-name>encodingFilter</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
</web-app>

 - 한글 변환을 위해서 이것도 환경설정을 꼭 해줘야합니다.

 

 

 

# BoardVO.java

package com.sist.dao;
import java.util.*;
 
import org.springframework.web.multipart.MultipartFile;
public class BoardVO {
   private int no;
   private String name;
   private String subject;
   private String content;
   private String pwd;
   private Date regdate;
   private int hit;
   private String filename;
   private String filesize;
   private int filecount;
   private List<MultipartFile> files;
   
public String getFilename() {
    return filename;
}
public void setFilename(String filename) {
    this.filename = filename;
}
public String getFilesize() {
    return filesize;
}
public void setFilesize(String filesize) {
    this.filesize = filesize;
}
public int getFilecount() {
    return filecount;
}
public void setFilecount(int filecount) {
    this.filecount = filecount;
}
public List<MultipartFile> getFiles() {
    return files;
}
public void setFiles(List<MultipartFile> files) {
    this.files = files;
}
public int getNo() {
    return no;
}
public void setNo(int no) {
    this.no = no;
}
public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}
public String getSubject() {
    return subject;
}
public void setSubject(String subject) {
    this.subject = subject;
}
public String getContent() {
    return content;
}
public void setContent(String content) {
    this.content = content;
}
public String getPwd() {
    return pwd;
}
public void setPwd(String pwd) {
    this.pwd = pwd;
}
public Date getRegdate() {
    return regdate;
}
public void setRegdate(Date regdate) {
    this.regdate = regdate;
}
public int getHit() {
    return hit;
}
public void setHit(int hit) {
    this.hit = hit;
}
   
}

 - 미리 Oracle에 생성해놓은 데이터를 VO에서 스프링 프레임워크와 연동하기 위해 getter/setter로 캡슐화 코딩을 해줍니다.

 

 

# BoardController.java

package com.sist.web;
 
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;
 
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.net.URLEncoder;
import java.util.*;
 
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import com.sist.dao.*;
 
@Controller
public class BoardController {
  
    @Autowired
    private BoardDAO dao;
    @RequestMapping("board/list.do")
    public String board_list(String page,Model model)
    // request없이 dispatcherservlet사용
    {
        if(page==null)
            page="1";
        int curpage=Integer.parseInt(page);
        // 현재 페이지 데이터값을 읽어 온다
        Map map=new HashMap();
        int rowSize=10;
        int start=(curpage*rowSize)-(rowSize-1);
        int end=curpage*rowSize;
        map.put("start", start);
        map.put("end", end);
        List<BoardVO> list=dao.boardListData(map);
        // 총페이지 
        int totalpage=dao.boardTotalPage();
        model.addAttribute("curpage", curpage);
        model.addAttribute("totalpage", totalpage);
        model.addAttribute("list", list);
        return "board/list";// forward ,sendRedirect => return "redirect:.do";
    }
    @RequestMapping("board/insert.do")
    public String board_insert()
    {
        return "board/insert";
    }
    @RequestMapping("board/insert_ok.do")
    public String board_insert_ok(BoardVO vo) throws Exception
    {
        List<MultipartFile> list=vo.getFiles();
        if(list==null || list.size()<1)
        {
            vo.setFilename("");
            vo.setFilesize("");
            vo.setFilecount(0);
        }
        else
        {
            String fn="";
            String fs="";
            for(MultipartFile mf:list)
            {
                //System.out.println(mf.getOriginalFilename());
                String filename=mf.getOriginalFilename();
                File file=new File("c:\\upload\\"+filename);
                mf.transferTo(file);// 업로드하는 소스 
                fn+=filename+",";
                fs+=file.length()+",";
            }
            fn=fn.substring(0,fn.lastIndexOf(","));
            fs=fs.substring(0,fs.lastIndexOf(","));
            vo.setFilename(fn);
            vo.setFilesize(fs);
            vo.setFilecount(list.size());
        }
        
        dao.boardInsert(vo);
        return "redirect:list.do";
    }
    
    @RequestMapping("board/detail.do")
    public String board_detail(int no,Model model)
    {
        // DB연동 
        BoardVO vo=dao.boardDetailData(no);
        List<String> fList=new ArrayList<String>();
        List<Integer> sList=new ArrayList<Integer>();
        if(vo.getFilecount()>0)
        {
            StringTokenizer st=new StringTokenizer(vo.getFilename(),",");
            while(st.hasMoreTokens())
            {
                fList.add(st.nextToken());
            }
            
            StringTokenizer st1=new StringTokenizer(vo.getFilesize(),",");
            while(st1.hasMoreTokens())
            {
                sList.add(Integer.parseInt(st1.nextToken()));
            }
        }
        model.addAttribute("fList", fList);
        model.addAttribute("sList", sList);
        model.addAttribute("vo", vo);
        return "board/detail";
    }
    
    @RequestMapping("board/update.do")
    public String board_update(int no,Model model)
    {
        BoardVO vo=dao.boardUpdateData(no);
        model.addAttribute("vo", vo);
        return "board/update";
    }
    
    @RequestMapping("board/delete.do")
    public String board_delete(int no,Model model)
    {
        model.addAttribute("no", no);
        return "board/delete";
    }
 
    @RequestMapping("board/download.do")
    public void board_download(String fn,HttpServletResponse response) 
    {
        try
        {
            response.setHeader("Content-Disposition", "attachment;filename="
                      +URLEncoder.encode(fn,"UTF-8"));
            File file=new File("c:\\upload\\"+fn);
            response.setContentLength((int)file.length());
            // 파일크기 => long
            
            BufferedInputStream bis=new BufferedInputStream(new FileInputStream(file));
            BufferedOutputStream bos=new BufferedOutputStream(response.getOutputStream());
            
            int i=0;
            // 읽은 바이트수
            byte[] buffer=new byte[1024];
            while((i=bis.read(buffer, 0, 1024))!=-1)
            {
                bos.write(buffer, 0, i);
            }
            
            bis.close();
            bos.close();
        }catch(Exception ex){}
    }
} 

 -  스프링으로부터 필요한 클래스 객체를 받아 둔다 
    스프링에서 생성된 객체 주소를 받을 경우에 → 지역변수는 사용 할 수 없다 

 

 

 

# BoardDAO.java

package com.sist.dao;
 
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import java.util.*;
@Repository
public class BoardDAO {
    @Autowired
    private BoardMapper mapper;
    // 목록 읽기
    public List<BoardVO> boardListData(Map map)
    {
        return mapper.boardListData(map);
    }
    // 총페이지 읽기
    public int boardTotalPage()
    {
        return mapper.boardTotalPage();
    }
    // 상세보기 
    public BoardVO boardDetailData(int no)
    {
        mapper.boardHitIncrement(no);
        return mapper.boardDeteilData(no);
    }
    // 추가 
    public void boardInsert(BoardVO vo)
    {
        mapper.boardInsert(vo);
    }
    // 수정 
    public BoardVO boardUpdateData(int no)
    {
        return mapper.boardDeteilData(no);
    }
    // 실제 수정 
    public boolean boardUpdate(BoardVO vo)
    {
        boolean bCheck=false;
        String db_pwd=mapper.boardGetPassword(vo.getNo());
        if(db_pwd.equals(vo.getPwd()))
        {
            bCheck=true;
            mapper.boardUpdate(vo);
        }
        else
        {
            bCheck=false;
        }
        return bCheck;
    }
    // 삭제
    public boolean boardDelete(int no,String pwd)
    {
        boolean bCheck=false;
        String db_pwd=mapper.boardGetPassword(no);
        if(db_pwd.equals(pwd))
        {
            bCheck=true;
            mapper.boardDelete(no);
        }
        else
        {
            bCheck=false;
        }
        return bCheck;
    }
    public BoardVO boardFileInfoData(int no)
    {
        return mapper.boardFileInfoData(no);
    }
    
}

 

 

 

# BoardMapper.java

package com.sist.dao;
import java.util.*;
 
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.SelectKey;
import org.apache.ibatis.annotations.Update;
public interface BoardMapper {
  // 목록 출력
  // <select> => @Select ==> XML을 대체 어노테이션 
  @Select("SELECT no,subject,name,regdate,hit,num "
         +"FROM (SELECT no,subject,name,regdate,hit, rownum as num "
         +"FROM (SELECT no,subject,name,regdate,hit "
         +"FROM spring_board ORDER BY 1 DESC)) "
         +"WHERE num BETWEEN #{start} AND #{end}")
  public List<BoardVO> boardListData(Map map);
  @Select("SELECT CEIL(COUNT(*)/10.0) FROM spring_board")
  public int boardTotalPage();
  // 데이터 추가 
  @SelectKey(keyProperty="no",resultType=int.class,before=true,
            statement="SELECT NVL(MAX(no)+1,1) as no FROM spring_board")
  @Insert("INSERT INTO spring_board(no,name,subject,content,pwd,filename,filesize,filecount) "
         +"VALUES(#{no},#{name},#{subject},#{content},#{pwd},#{filename},#{filesize},#{filecount})")
  public void boardInsert(BoardVO vo);
  // 상세보기 
  @Update("UPDATE spring_board SET "
         +"hit=hit+1 "
         +"WHERE no=#{no}")
  public void boardHitIncrement(int no);
  @Select("SELECT no,name,subject,content,regdate,hit,filename,filesize,filecount "
         +"FROM spring_board "
         +"WHERE no=#{no}")
  public BoardVO boardDeteilData(int no);
  // 수정 
  @Select("SELECT pwd FROM spring_board "
         +"WHERE no=#{no}")
  public String boardGetPassword(int no);
  
  @Update("UPDATE spring_board SET "
         +"name=#{name},subject=#{subject},content=#{content},"
         +"filename=#{filename},filesize=#{filesize},filecount=#{filecount} "
         +"WHERE no=#{no}")
  public void boardUpdate(BoardVO vo);
  // 삭제  
  @Delete("DELETE FROM spring_board "
         +"WHERE no=#{no}")
  public void boardDelete(int no);
  // 삭제 - 1
  @Select("SELECT filename,filecount,filesize "
         +"FROM spring_board "
         +"WHERE no=#{no}")
  public BoardVO boardFileInfoData(int no);
}

 

 

 

# BoardRestController.java

package com.sist.web;
 
import java.io.File;
import java.util.StringTokenizer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import com.sist.dao.*;
import java.util.*;
 
// 필요한 JavaScript
@RestController
// ajax , react 
// 단점 => IE (실행이 안됨)
public class BoardRestController {
   @Autowired
   private BoardDAO dao;
   
   @RequestMapping("board/update_ok.do")
   public String board_update_ok(BoardVO vo)
   {
       String result="";
       BoardVO pvo=dao.boardFileInfoData(vo.getNo());
       List<MultipartFile> list=vo.getFiles();
       // 파일 업로드가 안된 상태
       if(list==null || list.size()<1)
       {
           if(vo.getFilecount()<1)
           {
               vo.setFilename("");
               vo.setFilesize("");
               vo.setFilecount(0);
           }
           else
           {
               vo.setFilename(pvo.getFilename());
               vo.setFilesize(pvo.getFilesize());
               vo.setFilecount(pvo.getFilecount());
           }
       }
       // 파일 업로드가 된 상태 
       else
       {
           String fn="";
           String fs="";
           for(MultipartFile mf:list)
           {
               String filename=mf.getOriginalFilename();
               File files=new File("c:\\upload\\"+filename);
               try
               {
                    mf.transferTo(files);// 업로드 
               }catch(Exception ex){}
               fn+=filename+",";
               fs+=files.length()+",";
           }
           fn=fn.substring(0,fn.lastIndexOf(","));
           fs=fs.substring(0,fs.lastIndexOf(","));
           
           vo.setFilename(fn);
           vo.setFilesize(fs);
           vo.setFilecount(list.size());
           // 기존에 파일이 있다면 
           if(pvo.getFilecount()>0)
           {
               StringTokenizer st=new StringTokenizer(pvo.getFilename(),",");
               while(st.hasMoreTokens())
               {
                   File file=new File("c:\\upload\\"+st.nextToken());
                   file.delete();
               }
           }
       }
       boolean bCheck=dao.boardUpdate(vo);
       if(bCheck==true)
       {
           
           result="<script>"
                 +"location.href=\"detail.do?no="+vo.getNo()+"\";"
                 +"</script>";
           
       }
       else
       {
           result="<script>"
                 +"alert(\"Password Fail!!\");"
                 +"history.back();"
                 +"</script>";
       }
       return result;
   }
   
   @RequestMapping("board/delete_ok.do")
   public String board_delete_ok(int no,String pwd)
   {
       String result="";
       // 먼저
       BoardVO vo=dao.boardFileInfoData(no);
       // 나중
       boolean bCheck=dao.boardDelete(no, pwd);
       if(bCheck==true)
       {
           // 파일을 삭제하는 부분 
           try
           {
               if(vo.getFilecount()>0)
               {
                   //File dir=new File("c:\\upload");
                   StringTokenizer st=new StringTokenizer(vo.getFilename(),",");
                   while(st.hasMoreTokens())
                   {
                       File file=new File("c:\\upload\\"+st.nextToken());
                       file.delete();
                   }
               }
           }catch(Exception ex){}
           result="<script>"
                 +"location.href=\"list.do\";"
                 +"</script>";
       }
       else
       {
           result="<script>"
                 +"alert(\"비밀번호가 틀립니다!!\");"
                 +"history.back();"
                 +"</script>";
       }
       return result;
   }
}

- 이전    : mvc프로그램에서 JavaScript를 쓸 때 항상 _ok를 써서 jsp에 코딩

- 스프링 : RestController는 자바 내에서 코딩 가능

             주소값을 넘겨주는 것이 아니라 JavaScript, JSON 일반 문자열 넘길 때 쓰이는 위치로 사용

              → JavaScript 자체를 보낼 수 있다

              → JavaScript 코드를 RestController에서 처리하기 때문에  jsp파일이 안늘어나고  코드가 가벼워진다