파일다운로드

디자인

<div class="form-row">
    <div class="form-group col-6">
        <label>파일 다운로드</label> 
        <div class="filebox">
            <input id="upload-name" class="uploadbox d-inline-block" placeholder="파일 경로" readonly>
            <label for="uploadFile" class="d-inline-block cursor">파일 열기</label> 
            <input type="file" id="uploadFile" name="uploadFile">
            <div id="attachFile"></div>
        </div>
        <!-- 파일업로드 input에 파일경로를 등록 -->
        <script>
            $("#uploadFile").on('change',function(){
                var fileName = $("#uploadFile").val();
                $("#upload-name").val(fileName);
            });
        </script>
    </div>
</div>

function downloadFile(seq){
	fileDownloadIframe.location.href = "<c:url value='/oper/file/downloadFile.do'/>?seq="+seq;
}

	/**
	 * 템플릿 파일을 다운로드한다.
	 * @param paramMap - HashMap
	 * @return "jsonView"
	 * @exception Exception
	 */
	@RequestMapping(value = "/oper/file/templateFileDownload.do", method = RequestMethod.POST)
	@ResponseBody
	public ModelAndView templateFileDownload(
			@ModelAttribute("searchVO") SearchVO pSearchVO, 
			@RequestParam HashMap<String ,Object> paramMap,
			ModelAndView mv, HttpServletRequest request) throws Exception {

		String tmpFileNm  = (String) paramMap.get("tmpFileNm");
		
		String tempPath = request.getSession().getServletContext().getRealPath("/WEB-INF/templete");
		sFullPath = tempPath + File.separator + tmpFileNm;
		File file = FileUtil.getPathTraversalFile("", FilenameUtils.getFullPath(sFullPath), FileUtil.getName(sFullPath));
    	mv.addObject("file", file);
    	mv.addObject("fileNm", tmpFileNm);
    	mv.setViewName("downloadView");
		
		return mv;
	}

 

dispatcher-servlet.xml 에 빈 등록

<!-- download view -->
    <bean id="downloadView" class="test.cmmn.down.DownloadView"/>

 

AbstractView의 메소드 중 renderMergedOutputModel()을 쓰면 된다.
컨트롤러에서 AbstractView를 상속한 클래스를 호출하면

renderMergedOutputModel()를 호출해서 기능을 수행한다.

 

매개변수로 HttpServletRequest request, HttpServletResponse response가 있기 때문에 왠만한 전달값은

전부 받을 수 있을 것 같다

package test.cmmn.down;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.FileCopyUtils;
import org.springframework.web.servlet.view.AbstractView;

import test.cmmn.util.EgovClntInfo;

public class DownloadView extends AbstractView{

	private final static Logger LOGGER = LoggerFactory.getLogger(DownloadView.class);

	@Override
	protected void renderMergedOutputModel(Map<String, Object> map,
			HttpServletRequest request, HttpServletResponse response) throws Exception {

		File file = (File)map.get("file");					// 서버에 존재하는 실제 파일
		String fileNm = (String)map.get("fileNm");			// 원하는 파일명
	    int fSize = 0;
	    
	    if(file != null) {
	    	fSize = (int)file.length();
	    }

	    if (file != null && !(" ").equals(file.getName()) && fSize > 0) {
			String fileName = (file != null) ? file.getName() : "";
			response.setContentType(this.getContentType());
			response.setContentLength((int)file.length());
//			if(request.getParameter("direct") != null && request.getParameter("direct").equals("direct")){  view jsp화면에서 form태그안에 input type=hidden name="direct"
			if(map.get("direct") != null && map.get("direct").equals("direct")){
				int lastIndexUnder = fileName.lastIndexOf("_");
				int lastIndexDot = fileName.lastIndexOf(".");
				fileName = fileName.substring(0, lastIndexUnder) + fileName.substring(lastIndexDot);
				//response.setHeader("Content-Disposition", "attachment; filename=" + java.net.URLEncoder.encode(fileName, "UTF-8") + ";");
				//resp.setHeader("Content-disposition","attachment; filename="+fileName); // 파일명 셋팅
				if(fileNm != null && !("").equals(fileNm)){
					EgovClntInfo.setDisposition(fileNm, request, response);
				}else{
					EgovClntInfo.setDisposition(fileName, request, response);
				}
			}else{
				//response.setHeader("Content-Disposition", "attachment; filename=" + java.net.URLEncoder.encode(fileName, "UTF-8") + ";");
				//resp.setHeader("Content-disposition","attachment; filename="+fileName); // 파일명 셋팅
				if(fileNm != null && !("").equals(fileNm)){
					EgovClntInfo.setDisposition(fileNm, request, response);
				}else{
					EgovClntInfo.setDisposition(fileName, request, response);
				}
			}
			response.setHeader("Content-Transfer", "binary");

			//ajax
			//response.setHeader("Set-Cookie", "fileDownload=true;path=/; HttpOnly");

			OutputStream out = response.getOutputStream();

			FileInputStream fis = null;
			try{
				fis = new FileInputStream(file);
				FileCopyUtils.copy(fis, out);
			} catch (IOException e) {
				LOGGER.error(e.getMessage());
			} catch(Exception e){
				throw e;
			}finally{
				if(fis != null){
					try{ fis.close(); }catch(IOException e){LOGGER.error(e.getMessage());} catch(Exception e){ LOGGER.error(e.getMessage());}
				}
			}

			out.flush();
	    }else{
	    	response.setContentType("text/html;charset=utf-8");

			PrintWriter output = response.getWriter();

			output.println("<script type='text/javascript' >");
			//output.println("alert('파일정보를 확인할 수 없습니다.');");
			output.println("alert('NO FILE');");
			//output.println("history.go(-1);");
			output.println("</script>");
			output.flush();
			output.close();
		}
	}

}

---

제이쿼리 파일 다운로드

$('#btnDownloadYearRcvpay').click(function(){		
		var row = $("#dg_day").datagrid("getSelected");
		g_url = "<c:url value='/aaabbbbdo'/>?tmpFileNm=ddsfsdf.xlsx&searchDate="+row.date;
		g_msg = "다운로드하시겠습니까?";
		if (confirm(g_msg)){
			//$.messager.progress({msg:"Processing..."});	// display the progress bar		
			$.fileDownload(g_url, {
			    successCallback: function(url){
			        $.messager.progress('close');	// hide progress bar
			    },
			    failCallback: function(html, url){		 
			        //alert('template file download failed');
			        $.messager.progress('close');	// hide progress bar
			    }			    
			});
		}
	});

$.fileDownload($("#searchForm").prop('action'),{
  httpMethod: "POST",
  data:$("#searchForm").serialize(),
  successCallback: function (url) {
    $("#commonLoader").hide();
  },
  failCallback: function(responesHtml, url) {
    $("#commonLoader").hide();
    alert('관리자에게 문의 주세요.');
  }
});