SPRING FILE DOWNLOAD하기

안녕하세요.

출처 : https://winmargo.tistory.com/103

진행하기 위에선 DB에 파일 정보가 담겨져 있어야 합니다.

pom.xml

<dependency>
          <groupId>commons-fileupload</groupId>
          <artifactId>commons-fileupload</artifactId>
          <version>1.3.2</version>
        </dependency>

FileController.java

@RequestMapping("/fileDown.do")
    public ModelAndView download(@RequestParam("filecol")String filecol){
        
        logger.info("@@@@@@@@@@@@@@@FileDown(1) START@@@@@@@@@@@@@@@");
        
        String fullPath = filecol;
         
        File file = new File(fullPath);
        
        logger.info("@@@@@@@@@@@@@@@FileDown(1) END@@@@@@@@@@@@@@@");
         
        return new ModelAndView("download", "downloadFile", file);
    }

servlet-context.xml

<bean class="org.springframework.web.servlet.view.BeanNameViewResolver">
              <property name="order" value="0"/>
    </bean>
    
    <bean id="download" class="com.java.spring.util.FileDownload"/>

FileDownload.java

public class FileDownload extends AbstractView {
    public void Download(){
        
        setContentType("application/download; utf-8");
         
    }
 
    @Override
    protected void renderMergedOutputModel(Map<String, Object> model,
            HttpServletRequest request, HttpServletResponse response) throws Exception {
        // TODO Auto-generated method stub
        
        File file = (File)model.get("downloadFile");
        System.out.println("DownloadView --> file.getPath() : " + file.getPath());
        System.out.println("DownloadView --> file.getName() : " + file.getName());
         
        response.setContentType(getContentType());
        response.setContentLength((int)file.length());
         
        //String userAgent = request.getHeader("User-Agent");
         
        //boolean ie = userAgent.indexOf("MSIE") > -1;
         
        String fileName = null;
         
        //if(ie){
        //브라우저 정보에 따라 utf-8변경
        if(request.getHeader("User-Agent").indexOf("MSIE") > -1){
             
            fileName = URLEncoder.encode(file.getName(), "utf-8");
                         
        } else {
             
            fileName = new String(file.getName().getBytes("utf-8"));
        }// end if;
        
        response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\";");
        response.setHeader("Content-Transfer-Encoding", "binary");
        OutputStream out = response.getOutputStream();
        FileInputStream fis = null;
        
        //파일 카피 후 마무리
        try {
            fis = new FileInputStream(file);
            FileCopyUtils.copy(fis, out);
        } catch(Exception e){
            e.printStackTrace();
        }finally{
            if(fis != null){
                try{
                    fis.close();
                }catch(Exception e){}
            }
        }// try end;
        out.flush();
        
    }
}

home.jsp 

해당 파일이 db로 뿌려지고 있다면..

function fileDown(file){
            location.href = "http://localhost:8080/spring/fileDown.do?filecol="+encodeURI(file);
        }
 
<td onclick="fileDown('${list.FILECOL }')">${list.FILECOL }</td>

감사합니다.