JSP 파일 업로드/다운로드 (전자정부 프레임워크)

JSP

<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>

<div class="row justify-content-md-center">
	<form:form enctype="multipart/form-data" id="fileUploadForm">
		<table class="table table-bordered">
			<tr>
				<td>전자공고 제목 : <input type="text" id="title" name="title"><br></td>
			</tr>
			
			<tr>
				<td>첨부파일 :	 <input type="file" id="uploadFile" name="uploadFile"></td>
			</tr>
			<tr>
				<td>상태 : <span id="status"></span></td>
			</tr>
		
		</table>
	<br>
	
			<div style="text-align:right;">
			<input type="button" value="게시" id="btnSubmit">
			<input type="button" value="목록보기" onclick="location.href='../invest_board'">
			</div>
		
	</form:form>
	</div>
    
    <script>
$("#btnSubmit").click(function (event) { 
	event.preventDefault();          
	
    // Get form         
    var form = $('#fileUploadForm')[0];  	    
    // Create an FormData object          
    var data = new FormData(form);  	   
    // disabled the submit button         
    $("#btnSubmit").prop("disabled", true); 
    
	console.log(data.get("uploadFile"));
	
	$.ajax({
		type: "POST",
        url: "/ir/investNotice", 
        /* enctype: 'multipart/form-data',  */
        data: data,
        dataType: "text",
        contentType : false,
        processData : false,
        success: function(data) {
        	console.log('통신 성공');
        	 msg();
        	       
        	$("#btnSubmit").prop("disabled", false);  
        },
        error: function(request, status, error) {
        	console.log("ERROR : "+request.status+"\n"+"message"+request.responseText+"\n"+"error:"+error);     
            $("#btnSubmit").prop("disabled", false);    
            alert("fail");    
        }
    });

});


	function msg(){
	    let msg = document.getElementById('status');
	    msg.innerHTML = "글쓰기 성공";
	}


</script>

 

업로드 컨트롤러

 private final String uploadDir = "C:/Users/INF/Desktop/SKI/upload/";
	 //String fileStorePath = EgovProperties.getProperty("Globals.fileStorePath");
	 
	@PostMapping("/ir/investNotice") //파일 업로드
	    public void write(Model model, InvestNoticeWrite inWrite) throws IOException { 
		
		//파일이름 생성/////////////
		SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");
        Calendar dateTime = Calendar.getInstance();
        String uniqueId = sdf.format(dateTime.getTime()) + "."
                + inWrite.getUploadFile().getOriginalFilename().substring(inWrite.getUploadFile().getOriginalFilename().lastIndexOf(".") + 1);
        ///////////////////////////
				
		System.out.println("제목"+ inWrite.getTitle()); 
		System.out.println("파일이름"+ uniqueId); 
		System.out.println("첨부파일 본이름"+ inWrite.getUploadFile().getOriginalFilename()); 
		System.out.println("첨부파일 컨텐트 타입"+ inWrite.getUploadFile().getContentType()); 
		System.out.println("첨부파일 크기"+ inWrite.getUploadFile().getSize());
		System.out.println("첨부파일 바이트"+ inWrite.getUploadFile().getBytes()); 
		System.out.println("확장자"+inWrite.getUploadFile().getOriginalFilename().substring(inWrite.getUploadFile().getOriginalFilename().lastIndexOf(".") + 1));
					
		String realName = inWrite.getUploadFile().getOriginalFilename();
		String contentType = inWrite.getUploadFile().getContentType();
		String extension = inWrite.getUploadFile().getOriginalFilename().substring(inWrite.getUploadFile().getOriginalFilename().lastIndexOf(".") + 1);
		long size = inWrite.getUploadFile().getSize();

		inWrite.setFileContentType(contentType);
		inWrite.setFilePath(uploadDir+uniqueId);
		inWrite.setFileName(uniqueId);
		inWrite.setFileRealName(realName);
		inWrite.setFileSize(size);
		inWrite.setFileExtension(extension);

		//실제 폴더에 저장
		if (!inWrite.getUploadFile().isEmpty()) {

            String fullPath = uploadDir + uniqueId;
            inWrite.getUploadFile().transferTo(new File(fullPath)); 
            
           investNoticeService.write(inWrite);
        }
	}

 

다운로드 컨트롤러

@RequestMapping("/board/download/{attachUid}")
	public void download(@PathVariable("attachUid") int attachUid, Model model, InvestNotice investNotice, 
			HttpServletRequest request, HttpServletResponse response) throws IOException {
				
		InvestNotice one = investNoticeService.selectAllByUid(attachUid); 
		
		String header = request.getHeader("User-Agent");
		String downloadFile = "C:/Users/INF/Desktop/SKI/upload/" + one.getInvestNoticeFile();
		String downloadName = one.getInvestNoticeFile();//고유아이디
		
		//파일명 일부만 가져와서 다운로드 이름 지정
		String name = null;
		String realName =null;
				
		if(one.getFileRealName().length()<12) {
			 name = one.getFileRealName();
			 realName = name+"_"+downloadName;
			
		}else {
			 name = one.getFileRealName().substring(0,12);
			 realName = name+"_"+downloadName;

		}

		
		System.out.println("경로"+downloadFile);
		
		
		File file = new File(downloadFile);
		//FileInputStream in = new FileInputStream(downloadFile);
		long fileLength = file.length();
		
		String typefile = request.getServletContext().getMimeType(file.toString());
		
		System.out.println("---------------------테스트1"+typefile);
		
		if(typefile==null) {
			response.setContentType("application/octet-stream");
			
		}
		
		
		String downName = new String(realName.getBytes("euc-kr"), "ISO-8859-1");
		
		response.setContentType("application/octet-stream");
		response.setHeader("Content-Disposition", "attachment; filename=\"" + downName + "\";");
        response.setHeader("Content-Transfer-Encoding", "binary");
        //response.setHeader("Content-Type", "image/png; UTF-8");
        response.setHeader("Content-Length", "" + fileLength);
        response.setHeader("Pragma", "no-cache;");
        response.setHeader("Expires", "-1;");
        
        
        fileDownload(downloadFile, one.getFileSize(), response);
		
		System.out.println("---------------------테스트2");
		
		FileInputStream fileInputStream = new FileInputStream(file);	
		OutputStream os = response.getOutputStream();
		
		os.flush();
			    
		os.close();
		fileInputStream.close();
		
		System.out.println("마지막까지 실행되는지 테스트");
	
	}	
	
    
        public void fileDownload(String filePath, long fileSize, HttpServletResponse response){
        try (FileInputStream fis = new FileInputStream(filePath)) {
            OutputStream out = response.getOutputStream();

            int readCount = 0;
            byte[] buffer = new byte[Long.valueOf(fileSize).intValue()];

            while ((readCount = fis.read(buffer)) != -1) {
                out.write(buffer, 0, readCount);
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    }