엑셀다운로드시 progress bar

src/main/java/geoinfo/admins/constructionProjectManagement/ConstructionProjectManagementController.java

@@ -4,13 +4,13 @@ import java.io.IOException;
 import java.io.OutputStream;
 import java.io.UnsupportedEncodingException;
 import java.net.URLEncoder;
-import java.security.SecureRandom;
 import java.text.SimpleDateFormat;
 import java.util.Date;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
+import java.util.UUID;
 
 import javax.annotation.Resource;
 import javax.servlet.ServletOutputStream;
@@ -22,6 +22,9 @@ import org.apache.poi.ss.usermodel.Sheet;
 import org.json.simple.JSONArray;
 import org.json.simple.JSONObject;
 import org.json.simple.parser.JSONParser;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.ModelMap;
@@ -41,6 +44,7 @@ import geoinfo.com.EgovExcel;
 import geoinfo.comm.util.ScriptUtil;
 import geoinfo.comm.util.strUtil;
 import geoinfo.session.UserInfo;
+import geoinfo.util.ExcelJobManager;
 import geoinfo.util.ExcelMergeHeaderUtil;
 import geoinfo.util.MyUtil;
 
@@ -889,10 +893,18 @@ public class ConstructionProjectManagementController {
 	 * @param response
 	 * @throws Exception
 	 */
-	@RequestMapping(value = "admins/drilling/inquiry/excel.do")
+    @RequestMapping(method = RequestMethod.POST, value="/admins/drilling/inquiry/excel/start.do")
-	public void downloadDrillingInquiryListExcel(HttpServletRequest request, HttpServletResponse response, HSSFWorkbook workbook, @RequestParam HashMap<String, Object> params) throws Exception {
+    @ResponseBody
+    public Map<String,Object> downloadDrillingInquiryListExcel(HttpServletRequest request,  @RequestParam HashMap<String, Object> params) throws Exception {
 
-		HashMap<String, Object> map = new HashMap<String, Object>();
+        final String jobId = UUID.randomUUID().toString();
+        final HttpServletRequest finalRequest = request;
+        final HashMap<String,Object> finalParams = params;
+        final DrillingInquiryService service = drillingInquiryService;
+        String excelFileName = "발주기관_건설현장_목록_" + ExcelMergeHeaderUtil.getTimeStampString("yyyyMMdd_HHmm") + ".xlsx";
+
+        ExcelJobManager.startJob(jobId, new ExcelJobManager.ExcelTask() {
+            public byte[] generate(ExcelJobManager.ProgressCallback callback) throws Exception {
 
 				String[] headers = {"cid","constName","projectStateCodeName","constStartDate","constStateCodeName","inquiryDist" ,"masterCompanyDept","masterCompanyAdmin","masterCompanyTel","coinstCompanyDept","constCompanyAdmin","constCompanyTel"};
 				String[][] headerNames = {{"연번", "사업명", "입력상태", "사업내용", "",       "발주기관현황", "", "", "",                      "건설사현황", "", ""},
@@ -902,44 +914,38 @@ public class ConstructionProjectManagementController {
 				String[] columnType = {"String", "String", "String", "String", "String", "String", "String", "String", "String", "String", "String", "String"};
 				String sheetName = "Sheet1";
 				
-		String excelFileName = "발주기관 건설현장 목록";
+				JSONObject resultObj = drillingInquiryService.drillingInquiryList(finalRequest, finalParams);
-		
-//    	int startIndex = 0;
-    	Long totalCount = 0L;
-        // DB 조회
-        JSONObject resultObj = drillingInquiryService.drillingInquiryList(request, params);
-
-        // 여기에서 list 꺼내기
 				List<EgovMap> list = (List<EgovMap>) resultObj.get("datas");
-        totalCount = (Long) resultObj.get("count");
+				Long totalCount = (Long) resultObj.get("count");
 				
 				int idx = 0;
 				for (EgovMap rowData : list) {
-            // 공사기간 형식 처리: startDate ~ endDate
 				    String constStartDate = (String) rowData.get("constStartDate");
 				String constEndDate = (String) rowData.get("constEndDate");
-            rowData.put("constStartDate", constStartDate + " ~ " + constEndDate);	// 공사기간을 'startDate ~ endDate' 형식으로 변환
+				rowData.put("constStartDate", constStartDate + " ~ " + constEndDate);
 				rowData.put("cid", (totalCount) - (idx++));
 				
-            String glName = "";
+				String inquiryDist = "";
-            String gmName = "";
+				if (rowData.get("glName") != null)
-            String gsName = "";
+				inquiryDist += rowData.get("glName") + " ";
-            String inquiryDist = "";	// 발주처 
+				if (rowData.get("gmName") != null)
-            if ((String)rowData.get("glName") != null) {
+				inquiryDist += rowData.get("gmName") + " ";
-            	glName = (String)rowData.get("glName");
+				if (rowData.get("gsName") != null)
-            	inquiryDist = inquiryDist + glName + " "; 
+				inquiryDist += rowData.get("gsName");
-            }if ((String)rowData.get("gmName") != null) {
+				
-            	gmName = (String)rowData.get("gmName");
-            	inquiryDist = inquiryDist + gmName + " "; 
-            }if ((String)rowData.get("gsName") != null) {
-            	gsName = (String)rowData.get("gsName");
-            	inquiryDist = inquiryDist + gsName; 
-            }
 				rowData.put("inquiryDist", inquiryDist);
-            
 				}
 				
-        ExcelMergeHeaderUtil.listToExcelMergeHeader(list, response, headers, headerNames, headerWidths, columnType, sheetName, excelFileName);
+				byte[] excelBytes = ExcelMergeHeaderUtil.listToExcelMergeHeaderByteArray(list, headers, headerNames, headerWidths, columnType, "Sheet1", callback);
+	            
+				return excelBytes;
+            	
+        	}
+        }, excelFileName);
+
+        Map<String,Object> result = new HashMap<String,Object>();
+        result.put("jobId", jobId);
+        return result;
     }
 
 	/**
@@ -1113,4 +1119,45 @@ public class ConstructionProjectManagementController {
         ExcelMergeHeaderUtil.listToExcelMergeHeaderForLoginHistory(resultList, response, headers, headerNames, headerWidths, columnType, sheetName, excelFileName);
     }
 	
+	/**
+	 * 엑셀 다운로드 로딩 표시(진행률 확인)
+	 * @param jobId
+	 * @return
+	 */
+	@RequestMapping(value="/admins/drilling/inquiry/excel/progress.do", method=RequestMethod.GET)
+	@ResponseBody
+	public Map<String,Object> getExcelProgress(@RequestParam String jobId) {
+	    int progress = ExcelJobManager.getProgress(jobId);
+	    Map<String,Object> result = new HashMap<>();
+	    result.put("progress", progress);
+	    return result;
+	}
+	
+	/**
+	 * 엑셀 다운로드 로딩 표시(다운로드 완료)
+	 * @param jobId
+	 * @param response
+	 * @throws IOException
+	 */
+	@RequestMapping(value="/admins/drilling/inquiry/excel/download.do", method=RequestMethod.GET)
+	public void downloadExcel(@RequestParam String jobId, HttpServletResponse response) throws IOException {
+	    byte[] data = ExcelJobManager.getResult(jobId);
+	    if(data == null){
+	        response.sendError(404, "엑셀 파일을 찾을 수 없습니다.");
+	        return;
+	    }
+
+	    // Job 단위로 저장된 파일명 사용
+	    String fileName = ExcelJobManager.getFileName(jobId);
+	    fileName = java.net.URLEncoder.encode(fileName, "UTF-8").replaceAll("\\+", "%20");
+
+	    response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");
+	    response.setHeader("Content-Transfer-Encoding", "binary");
+	    response.setContentType("application/octet-stream");
+	    response.getOutputStream().write(data);
+	    response.flushBuffer();
+
+	    // 완료 후 캐시 제거
+	    ExcelJobManager.clear(jobId);
+	}
 }

src/main/java/geoinfo/util/ExcelJobManager.java

@@ -0,0 +1,81 @@
+package geoinfo.util;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+import javax.servlet.http.HttpServletRequest;
+
+import org.json.simple.JSONObject;
+
+import egovframework.rte.psl.dataaccess.util.EgovMap;
+import geoinfo.admins.user.service.DrillingInquiryService;
+
+/**
+ * 엑셀 다운로드 로딩바 처리 유틸
+ * @author JIYOO
+ */
+public class ExcelJobManager {
+
+    private static class Job {
+        byte[] data;
+        String fileName;
+        int progress;
+    }
+
+    private static Map<String, Job> jobMap = new ConcurrentHashMap<String, Job>();
+
+    public static void startJob(final String jobId, final ExcelTask excelTask, final String fileName) {
+        final Job job = new Job();
+        job.progress = 0;
+        job.fileName = fileName;
+        jobMap.put(jobId, job);
+
+        new Thread(new Runnable() {
+            @Override
+            public void run() {
+                try {
+                    byte[] excelBytes = excelTask.generate(new ProgressCallback() {
+                        @Override
+                        public void update(int percent) {
+                            job.progress = percent;
+                        }
+                    });
+                    job.data = excelBytes;
+                    job.progress = 100;
+                } catch (Exception e) {
+                    job.progress = -1;
+                    e.printStackTrace();
+                }
+            }
+        }).start();
+    }
+
+    public static int getProgress(String jobId) {
+        Job job = jobMap.get(jobId);
+        return job == null ? 0 : job.progress;
+    }
+
+    public static byte[] getResult(String jobId) {
+        Job job = jobMap.get(jobId);
+        return job == null ? null : job.data;
+    }
+
+    public static String getFileName(String jobId) {
+        Job job = jobMap.get(jobId);
+        return job == null ? "excel.xlsx" : job.fileName;
+    }
+
+    public static void clear(String jobId) {
+        jobMap.remove(jobId);
+    }
+
+    public static interface ProgressCallback {
+        void update(int percent);
+    }
+
+    public static interface ExcelTask {
+        byte[] generate(ProgressCallback callback) throws Exception;
+    }
+}

src/main/java/geoinfo/util/ExcelMergeHeaderUtil.java

@@ -1,6 +1,6 @@
 package geoinfo.util;
 
-
+import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.net.URLEncoder;
@@ -30,25 +30,32 @@ import org.apache.poi.xssf.usermodel.XSSFWorkbook;
 
 import egovframework.rte.psl.dataaccess.util.EgovMap;
 
-
 public class ExcelMergeHeaderUtil {
 
-
 	public static boolean isEmpty(final Object obj) {
 		return !isNotEmpty(obj);
 	}
 
 	public static boolean isNotEmpty(final Object obj) {
-    if(null == obj) return false;
+		if (null == obj)
+			return false;
 		else {
-      if(obj instanceof String) return "".equals(obj) ? false : true;
+			if (obj instanceof String)
-      else if(obj instanceof List) return !((List<?>)obj).isEmpty();
+				return "".equals(obj) ? false : true;
-      else if(obj instanceof Map) return !((Map<?,?>)obj).isEmpty();
+			else if (obj instanceof List)
-//			else if(obj instanceof Object[]) return 0 == Array.getLength(obj) ? false : true;
+				return !((List<?>) obj).isEmpty();
-      else if(obj instanceof Integer) return !(null == obj);
+			else if (obj instanceof Map)
-      else if(obj instanceof Long) return !(null == obj);
+				return !((Map<?, ?>) obj).isEmpty();
-      else if(obj instanceof LocalDate) return !(null == obj);
+			// else if(obj instanceof Object[]) return 0 == Array.getLength(obj) ? false :
-      else return false;
+			// true;
+			else if (obj instanceof Integer)
+				return !(null == obj);
+			else if (obj instanceof Long)
+				return !(null == obj);
+			else if (obj instanceof LocalDate)
+				return !(null == obj);
+			else
+				return false;
 		}
 	}
 
@@ -60,45 +67,61 @@ public class ExcelMergeHeaderUtil {
 		return getTimeStampString(date, "yyyyMMddHHmmss");
 	}
 
-  public static String getTimeStampString(final Date date, final String format){
+	public static String getTimeStampString(final Date date, final String format) {
-    java.text.SimpleDateFormat formatter = new java.text.SimpleDateFormat (format, java.util.Locale.KOREA);
+		java.text.SimpleDateFormat formatter = new java.text.SimpleDateFormat(format, java.util.Locale.KOREA);
 		return formatter.format(date);
 	}
 
 	public static String getTimeStampString(String date, final String format) {
 		try {
-      if(null == date || "".equals(date)) return "";
+			if (null == date || "".equals(date))
+				return "";
 
 			Date d = null;
-      date= date.replaceAll("-", "");
+			date = date.replaceAll("-", "");
 
-      switch(date.length()) {
+			switch (date.length()) {
-        case 14: break;
+			case 14:
-        case 12: date += "00";			break;
+				break;
-        case 10: date += "0000";		break;
+			case 12:
-        case 8:	 date += "000000";		break;
+				date += "00";
-        case 6:	 date += "01000000";	break;
+				break;
-        case 4:	 date += "0101000000";	break;
+			case 10:
-        default: return "";
+				date += "0000";
+				break;
+			case 8:
+				date += "000000";
+				break;
+			case 6:
+				date += "01000000";
+				break;
+			case 4:
+				date += "0101000000";
+				break;
+			default:
+				return "";
 			}
 
-      java.text.SimpleDateFormat tmpFormat = new java.text.SimpleDateFormat("yyyyMMddHHmmss", java.util.Locale.KOREA);
+			java.text.SimpleDateFormat tmpFormat = new java.text.SimpleDateFormat("yyyyMMddHHmmss",
+					java.util.Locale.KOREA);
 
-      if("".equals(date)) d = new Date();
+			if ("".equals(date))
+				d = new Date();
 			else {
 				tmpFormat.setLenient(true);
 				d = tmpFormat.parse(date);
 			}
 
 			return getTimeStampString(d, format);
-    } catch(Exception e) {
+		} catch (Exception e) {
 			e.printStackTrace();
 			return "";
 		}
 	}
 
 	public static String getFileExtention(final String filename) {
-    if(null == filename || "".equals(filename)) return "";
+		if (null == filename || "".equals(filename))
+			return "";
 
 		return -1 < filename.lastIndexOf(".") ? filename.substring(filename.lastIndexOf(".") + 1).toLowerCase() : "";
 	}
@@ -112,15 +135,16 @@ public class ExcelMergeHeaderUtil {
 		return ExcelMergeHeaderUtil.getTimeStampString("yyyyMMdd_HHmmss_SSS");
 	}
 
-  public static void listToExcel(List<EgovMap> list, HttpServletResponse response, String[] headers, String[] headerNames, String[] columnType, String sheetName, String excelFileName) throws IOException {
+	public static void listToExcel(List<EgovMap> list, HttpServletResponse response, String[] headers,
-    if(ExcelMergeHeaderUtil.isNotEmpty(list)) {
+			String[] headerNames, String[] columnType, String sheetName, String excelFileName) throws IOException {
+		if (ExcelMergeHeaderUtil.isNotEmpty(list)) {
 			// 메모리에 100개의 행을 유지합니다. 행의 수가 넘으면 디스크에 적습니다.
 			XSSFWorkbook wb = new XSSFWorkbook();
 			Sheet sheet = wb.createSheet(sheetName);
 			Row headerRow = sheet.createRow(0);
-      CellStyle cellStyle1 = wb.createCellStyle();		//쉼표들어간 숫자 양식
+			CellStyle cellStyle1 = wb.createCellStyle(); // 쉼표들어간 숫자 양식
-      CellStyle cellStyle2 = wb.createCellStyle();		//숫자양식
+			CellStyle cellStyle2 = wb.createCellStyle(); // 숫자양식
-      CellStyle headerStyle = wb.createCellStyle();		//헤더 스타일
+			CellStyle headerStyle = wb.createCellStyle(); // 헤더 스타일
 			CellStyle borderStyle = wb.createCellStyle(); // 기본 검정 테두리 스타일
 
 			// 기본 검정 테두리 스타일 설정
@@ -144,14 +168,14 @@ public class ExcelMergeHeaderUtil {
 			headerStyle.setAlignment(HorizontalAlignment.CENTER);
 			headerStyle.setVerticalAlignment(VerticalAlignment.CENTER);
 			headerStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
-      headerStyle.setFillForegroundColor((short)3);
+			headerStyle.setFillForegroundColor((short) 3);
 			headerStyle.setFillForegroundColor(IndexedColors.GREY_40_PERCENT.getIndex());
 
-      for(int i=0; i<list.size(); i++) {
+			for (int i = 0; i < list.size(); i++) {
 				EgovMap rowData = list.get(i);
-        Row row = sheet.createRow(i+1);
+				Row row = sheet.createRow(i + 1);
 
-        for(int j=0; j<headers.length; j++) {
+				for (int j = 0; j < headers.length; j++) {
 					Cell cell = row.createCell(j);
 
 					Object value = rowData.get(headers[j]);
@@ -182,18 +206,19 @@ public class ExcelMergeHeaderUtil {
 				}
 			}
 
-      for(int j=0; j<headerNames.length; j++) {
+			for (int j = 0; j < headerNames.length; j++) {
 				Cell cell = headerRow.createCell(j);
 				cell.setCellValue(headerNames[j]);
 				cell.setCellStyle(headerStyle);
 				sheet.autoSizeColumn(j);
 				sheet.setColumnWidth(j, (sheet.getColumnWidth(j)) + 1000);
 			}
-      //엑셀이름 한글깨짐방지
+			// 엑셀이름 한글깨짐방지
 			String outputFileName = new String(excelFileName.getBytes("KSC5601"), "8859_1");
 
 			response.setHeader("Set-Cookie", "fileDownload=true; path=/");
-      response.setHeader("Content-Disposition", String.format("attachment; filename=\""+outputFileName+"_"+ExcelMergeHeaderUtil.getTimeStampString("yyyyMMdd_HHmm")+".xlsx\""));
+			response.setHeader("Content-Disposition", String.format("attachment; filename=\"" + outputFileName + "_"
+					+ ExcelMergeHeaderUtil.getTimeStampString("yyyyMMdd_HHmm") + ".xlsx\""));
 
 			wb.write(response.getOutputStream());
 			wb.close();
@@ -203,15 +228,17 @@ public class ExcelMergeHeaderUtil {
 
 	}
 
-  public static void listToExcelMergeHeader(List<EgovMap> list, HttpServletResponse response, String[] headers, String[][] headerNames, int[] headerWidths, String[] columnType, String sheetName, String excelFileName) throws IOException {
+	public static void listToExcelMergeHeader(List<EgovMap> list, HttpServletResponse response, String[] headers,
-    if(ExcelMergeHeaderUtil.isNotEmpty(list)) {
+			String[][] headerNames, int[] headerWidths, String[] columnType, String sheetName, String excelFileName)
+			throws IOException {
+		if (ExcelMergeHeaderUtil.isNotEmpty(list)) {
 			// 메모리에 100개의 행을 유지합니다. 행의 수가 넘으면 디스크에 적습니다.
 			XSSFWorkbook wb = new XSSFWorkbook();
 			Sheet sheet = wb.createSheet(sheetName);
 			Row headerRow = sheet.createRow(headerNames.length);
-      CellStyle cellStyle1 = wb.createCellStyle();		//쉼표들어간 숫자 양식
+			CellStyle cellStyle1 = wb.createCellStyle(); // 쉼표들어간 숫자 양식
-      CellStyle cellStyle2 = wb.createCellStyle();		//숫자양식
+			CellStyle cellStyle2 = wb.createCellStyle(); // 숫자양식
-      CellStyle headerStyle = wb.createCellStyle();		//헤더 스타일
+			CellStyle headerStyle = wb.createCellStyle(); // 헤더 스타일
 			CellStyle borderStyle = wb.createCellStyle(); // 기본 검정 테두리 스타일
 
 			// 기본 검정 테두리 스타일 설정
@@ -235,7 +262,7 @@ public class ExcelMergeHeaderUtil {
 			headerStyle.setAlignment(HorizontalAlignment.CENTER);
 			headerStyle.setVerticalAlignment(VerticalAlignment.CENTER);
 			headerStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
-//      headerStyle.setFillForegroundColor((short)3);
+			// headerStyle.setFillForegroundColor((short)3);
 			headerStyle.setFillForegroundColor(IndexedColors.GREY_40_PERCENT.getIndex());
 
 			// 바디 스타일
@@ -280,13 +307,13 @@ public class ExcelMergeHeaderUtil {
 					Cell cell = row.createCell(j);
 
 					// 특정 컬럼 중앙 정렬 -----참고용------------
-//    	        if ("lvl1_rate".equals(headers[j]) ||
+					// if ("lvl1_rate".equals(headers[j]) ||
-//    	            "lvl2_rate".equals(headers[j]) ||
+					// "lvl2_rate".equals(headers[j]) ||
-//    	            "lvl3_rate".equals(headers[j]) ||
+					// "lvl3_rate".equals(headers[j]) ||
-//    	            "lvl2_organ_up".equals(headers[j]) ||
+					// "lvl2_organ_up".equals(headers[j]) ||
-//    	            "lvl3_organ_up".equals(headers[j])) {
+					// "lvl3_organ_up".equals(headers[j])) {
-//    	            cell.setCellStyle(bodyStyle);
+					// cell.setCellStyle(bodyStyle);
-//    	        } -----참고용------------
+					// } -----참고용------------
 
 					Object value = rowData.get(headers[j]);
 
@@ -317,11 +344,12 @@ public class ExcelMergeHeaderUtil {
 				}
 			}
 
-      //엑셀이름 한글깨짐방지
+			// 엑셀이름 한글깨짐방지
 			String outputFileName = new String(excelFileName.getBytes("KSC5601"), "8859_1");
 
 			response.setHeader("Set-Cookie", "fileDownload=true; path=/");
-      response.setHeader("Content-Disposition", String.format("attachment; filename=\""+outputFileName+"_"+ExcelMergeHeaderUtil.getTimeStampString("yyyyMMdd_HHmm")+".xlsx\""));
+			response.setHeader("Content-Disposition", String.format("attachment; filename=\"" + outputFileName + "_"
+					+ ExcelMergeHeaderUtil.getTimeStampString("yyyyMMdd_HHmm") + ".xlsx\""));
 
 			wb.write(response.getOutputStream());
 			wb.close();
@@ -331,11 +359,110 @@ public class ExcelMergeHeaderUtil {
 
 	}
 
+	/**
+	 * 로딩바 표시를 위하여 응답을 return함
+	 * 
+	 * @param response
+	 * @throws IOException
+	 */
+	// public static byte[] listToExcelMergeHeaderByteArray(List<EgovMap> list,
+	// String[] headers, String[][] headerNames, int[] headerWidths, String[]
+	// columnType, String sheetName) throws IOException {
+	public static byte[] listToExcelMergeHeaderByteArray(List<EgovMap> list, String[] headers, String[][] headerNames,
+			int[] headerWidths, String[] columnType, String sheetName, ExcelJobManager.ProgressCallback callback)
+			throws IOException {
+
+		if (!ExcelMergeHeaderUtil.isNotEmpty(list)) {
+			return new byte[0];
+		}
+
+		XSSFWorkbook wb = new XSSFWorkbook();
+		Sheet sheet = wb.createSheet(sheetName);
+
+		CellStyle headerStyle = wb.createCellStyle();
+		CellStyle borderStyle = wb.createCellStyle();
+		CellStyle cellStyle1 = wb.createCellStyle();
+		CellStyle cellStyle2 = wb.createCellStyle();
+
+		// ===== 스타일 설정 =====
+		borderStyle.setBorderTop(BorderStyle.THIN);
+		borderStyle.setBorderBottom(BorderStyle.THIN);
+		borderStyle.setBorderLeft(BorderStyle.THIN);
+		borderStyle.setBorderRight(BorderStyle.THIN);
+
+		Font headerFont = wb.createFont();
+		headerFont.setColor(IndexedColors.WHITE.getIndex());
+		headerStyle.setFont(headerFont);
+		headerStyle.cloneStyleFrom(borderStyle);
+		headerStyle.setAlignment(HorizontalAlignment.CENTER);
+		headerStyle.setVerticalAlignment(VerticalAlignment.CENTER);
+		headerStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
+		headerStyle.setFillForegroundColor(IndexedColors.GREY_40_PERCENT.getIndex());
+
+		XSSFDataFormat format = wb.createDataFormat();
+		cellStyle1.setDataFormat(format.getFormat("#,##0"));
+		cellStyle2.setDataFormat(format.getFormat("#"));
+
+		// ===== 헤더 병합 =====
+		sheet.addMergedRegion(new CellRangeAddress(0, 1, 0, 0));
+		sheet.addMergedRegion(new CellRangeAddress(0, 1, 1, 1));
+		sheet.addMergedRegion(new CellRangeAddress(0, 1, 2, 2));
+		sheet.addMergedRegion(new CellRangeAddress(0, 0, 3, 4));
+		sheet.addMergedRegion(new CellRangeAddress(0, 0, 5, 8));
+		sheet.addMergedRegion(new CellRangeAddress(0, 0, 9, 11));
+
+		// ===== 헤더 생성 =====
+		for (int i = 0; i < headerNames.length; i++) {
+			Row row = sheet.createRow(i);
+			for (int j = 0; j < headerNames[i].length; j++) {
+				Cell cell = row.createCell(j);
+				cell.setCellValue(headerNames[i][j]);
+				cell.setCellStyle(headerStyle);
+				sheet.setColumnWidth(j, headerWidths[j]);
+			}
+		}
+
+		// ===== 바디 =====
+		for (int i = 0; i < list.size(); i++) {
+			EgovMap rowData = list.get(i);
+			Row row = sheet.createRow(i + 2);
+
+			for (int j = 0; j < headers.length; j++) {
+				Cell cell = row.createCell(j);
+				Object value = rowData.get(headers[j]);
+
+				if ("Money".equalsIgnoreCase(columnType[j])) {
+					cell.setCellValue(value instanceof Number ? ((Number) value).doubleValue() : 0);
+					cell.setCellStyle(cellStyle1);
+				} else if ("Int".equalsIgnoreCase(columnType[j])) {
+					cell.setCellValue(value instanceof Number ? ((Number) value).doubleValue() : 0);
+					cell.setCellStyle(cellStyle2);
+				} else {
+					cell.setCellValue(value == null ? "" : String.valueOf(value));
+				}
+
+				cell.setCellStyle(borderStyle);
+				// 진행률 계산 (중간중간 콜백 호출)
+				if (callback != null) {
+					int percent = (int) (((i + 1) / (double) list.size()) * 100);
+					callback.update(percent);
+				}
+			}
+		}
+
+		ByteArrayOutputStream bos = new ByteArrayOutputStream();
+		wb.write(bos);
+		wb.close();
+
+		return bos.toByteArray();
+	}
+
 	private static void createNoDataAlert(HttpServletResponse response) throws IOException {
 		response.setHeader("Content-Type", "text/html; charset=UTF-8");
 		PrintWriter out = response.getWriter();
 
-    out.write("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">");
+		out.write(
+				"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">");
 		out.write("<html lang=\"ko\">");
 		out.write("<head>");
 		out.write("<script type=\"text/javascript\">");
@@ -349,7 +476,8 @@ public class ExcelMergeHeaderUtil {
 		out.close();
 	}
 
-  public static void setDisposition(String filename, HttpServletRequest request, HttpServletResponse response) throws IOException {
+	public static void setDisposition(String filename, HttpServletRequest request, HttpServletResponse response)
+			throws IOException {
 		String browser = getBrowser(request);
 
 		String dispositionPrefix = "attachment; filename=";
@@ -367,7 +495,7 @@ public class ExcelMergeHeaderUtil {
 			StringBuffer sb = new StringBuffer();
 			for (int i = 0; i < filename.length(); i++) {
 				char c = filename.charAt(i);
-        if(c==','){
+				if (c == ',') {
 					sb.append(URLEncoder.encode("，", "UTF-8"));
 				} else if (c > '~') {
 					sb.append(URLEncoder.encode("" + c, "UTF-8"));
@@ -385,7 +513,7 @@ public class ExcelMergeHeaderUtil {
 		if ("Opera".equals(browser)) {
 			response.setContentType("application/octet-stream;charset=UTF-8");
 		}
-    if(filename.contains("zip")){
+		if (filename.contains("zip")) {
 			response.setContentType("application/zip");
 		}
 	}
@@ -410,16 +538,17 @@ public class ExcelMergeHeaderUtil {
 		return formattedDate;
 	}
 
-  
+	public static void listToExcelMergeHeaderForLoginHistory(List<EgovMap> list, HttpServletResponse response,
-  public static void listToExcelMergeHeaderForLoginHistory(List<EgovMap> list, HttpServletResponse response, String[] headers, String[] headerNames, int[] headerWidths, String[] columnType, String sheetName, String excelFileName) throws IOException {
+			String[] headers, String[] headerNames, int[] headerWidths, String[] columnType, String sheetName,
-	    if(ExcelMergeHeaderUtil.isNotEmpty(list)) {
+			String excelFileName) throws IOException {
+		if (ExcelMergeHeaderUtil.isNotEmpty(list)) {
 			// 메모리에 100개의 행을 유지합니다. 행의 수가 넘으면 디스크에 적습니다.
 			XSSFWorkbook wb = new XSSFWorkbook();
 			Sheet sheet = wb.createSheet(sheetName);
 			Row headerRow = sheet.createRow(headerNames.length);
-	      CellStyle cellStyle1 = wb.createCellStyle();		//쉼표들어간 숫자 양식
+			CellStyle cellStyle1 = wb.createCellStyle(); // 쉼표들어간 숫자 양식
-	      CellStyle cellStyle2 = wb.createCellStyle();		//숫자양식
+			CellStyle cellStyle2 = wb.createCellStyle(); // 숫자양식
-	      CellStyle headerStyle = wb.createCellStyle();		//헤더 스타일
+			CellStyle headerStyle = wb.createCellStyle(); // 헤더 스타일
 			CellStyle borderStyle = wb.createCellStyle(); // 기본 검정 테두리 스타일
 
 			// 기본 검정 테두리 스타일 설정
@@ -443,7 +572,7 @@ public class ExcelMergeHeaderUtil {
 			headerStyle.setAlignment(HorizontalAlignment.CENTER);
 			headerStyle.setVerticalAlignment(VerticalAlignment.CENTER);
 			headerStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
-//	      headerStyle.setFillForegroundColor((short)3);
+			// headerStyle.setFillForegroundColor((short)3);
 			headerStyle.setFillForegroundColor(IndexedColors.GREY_40_PERCENT.getIndex());
 
 			// 바디 스타일
@@ -503,11 +632,12 @@ public class ExcelMergeHeaderUtil {
 				}
 			}
 
-	      //엑셀이름 한글깨짐방지
+			// 엑셀이름 한글깨짐방지
 			String outputFileName = new String(excelFileName.getBytes("KSC5601"), "8859_1");
 
 			response.setHeader("Set-Cookie", "fileDownload=true; path=/");
-	      response.setHeader("Content-Disposition", String.format("attachment; filename=\""+outputFileName+"_"+ExcelMergeHeaderUtil.getTimeStampString("yyyyMMdd_HHmm")+".xlsx\""));
+			response.setHeader("Content-Disposition", String.format("attachment; filename=\"" + outputFileName + "_"
+					+ ExcelMergeHeaderUtil.getTimeStampString("yyyyMMdd_HHmm") + ".xlsx\""));
 
 			wb.write(response.getOutputStream());
 			wb.close();

src/main/webapp/WEB-INF/views/admins/constructionProjectManagement/construction-site-index.jsp

@@ -574,6 +574,7 @@
 	
 	// 엑셀 다운로드
 	function clickExcelDownload(){
+		/*
 	    const params = new URLSearchParams();
 
 	    params.append("constTag", trim($('#const-tag').val()));
@@ -595,6 +596,107 @@
 	    // AJAX가 아닌 직접 다운로드 요청
 	    window.location.href = "/admins/drilling/inquiry/excel.do?" + params.toString();
 		$('#excelDownload').val("");
+		*/
+
+	    const params = new URLSearchParams();
+	    params.append("constTag", trim($('#const-tag').val()));
+	    params.append("constName", trim($('#const-name').val()));
+	    params.append("excelDownload", "Y");
+
+	    parent[1].showLoadingBar();
+
+	    fetch("/admins/drilling/inquiry/excel.do", {
+	        method: "POST",
+	        headers: {
+	            "Content-Type": "application/x-www-form-urlencoded"
+	        },
+	        body: params.toString()
+	    })
+	    .then(response => {
+	        if (!response.ok) throw new Error("다운로드 실패");
+
+	        const disposition = response.headers.get("Content-Disposition");
+	        let fileName = "excel.xlsx";
+
+	        if (disposition && disposition.includes("filename=")) {
+	            fileName = disposition.split("filename=")[1].replace(/"/g, "");
+	        }
+
+	        return response.blob().then(blob => ({ blob, fileName }));
+	    })
+	    .then(({ blob, fileName }) => {
+
+	        const url = window.URL.createObjectURL(blob);
+	        const a = document.createElement("a");
+	        a.href = url;
+	        a.download = fileName;
+	        document.body.appendChild(a);
+	        a.click();
+	        a.remove();
+	        window.URL.revokeObjectURL(url);
+	    })
+	    .catch(err => {
+	        alert("엑셀 다운로드 중 오류 발생");
+	        console.error(err);
+	    })
+	    .finally(() => {
+			$('#excelDownload').val("");
+			parent.hideLoadingBar();
+	    });
+	}
+	
+	let currentJobId = null;
+
+	function startExcelDownload() {
+
+	    const params = new URLSearchParams();
+	    params.append("constTag", trim($('#const-tag').val()));
+	    params.append("constName", trim($('#const-name').val()));
+	    params.append("excelDownload", "Y");
+
+
+	    parent.showLoadingBar();
+// 	    parent.document.getElementById("progressWrap").style.display = "block";
+
+	    fetch("/admins/drilling/inquiry/excel/start.do", {
+	        method: "POST",
+	        headers: {"Content-Type":"application/x-www-form-urlencoded"},
+	        body: params.toString()
+	    })
+	    .then(res => res.json())
+	    .then(data => {
+	        currentJobId = data.jobId;
+	        pollProgress();
+	    });
+
+		$('#excelDownload').val("");
+	}
+
+	function pollProgress() {
+
+	    fetch("/admins/drilling/inquiry/excel/progress.do?jobId=" + currentJobId)
+	    .then(res => res.json())
+	    .then(data => {
+
+	        let percent = data.progress;
+
+	        if(percent < 0){
+	            alert("엑셀 생성 중 오류 발생");
+	            return;
+	        }
+
+	        parent.document.getElementById("progressBar").style.width = percent + "%";
+	        parent.document.getElementById("progressText").innerText = percent + "%";
+
+	        if(percent < 100){
+	            setTimeout(pollProgress, 500);
+	        } else {
+	            setTimeout(function(){
+	                window.location = "/admins/drilling/inquiry/excel/download.do?jobId=" + currentJobId;
+	                parent.hideLoadingBar();
+	            }, 700);
+	        }
+	    });
 	}
 </script><style>
 .drilling .page-content-inner {
@@ -780,7 +882,8 @@ li {
                         </div>
                         <div class="table-info-group">
                         	<span>Total: <span id="count">-</span>건</span>
-                        	<span class="pull-right"><img src="${pageContext.request.contextPath}/images/admins/excel.gif" style="cursor:hand" onClick="javascript:clickExcelDownload()"></span>
+<%--                         	<span class="pull-right"><img src="${pageContext.request.contextPath}/images/admins/excel.gif" style="cursor:hand" onClick="javascript:clickExcelDownload()"></span> --%>
+                        	<span class="pull-right"><img src="${pageContext.request.contextPath}/images/admins/excel.gif" style="cursor:hand" onClick="startExcelDownload()"></span>
                         </div>
                         <div class="table-wrap">
                             <table>
@@ -835,7 +938,6 @@ li {
     </div>
 </section>
 <!-- 페이지 컨테이너 끝 -->
-
 </form>
 </body>
 </html>

src/main/webapp/WEB-INF/views/admins/frame/mainframe.jsp

@@ -7,7 +7,79 @@
 <script>
 var waitWin;
 
+function showLoadingBar() {
+    document.getElementById("loadingModal").style.display = "flex";
+    document.getElementById("progressBar").style.width = "0%";
+    document.getElementById("progressText").innerText = "0%";
+}
+
+function hideLoadingBar() {
+    document.getElementById("loadingModal").style.display = "none";
+}
 </script>
+<style type="text/css">
+/* 전체 화면 반투명 배경 */
+#loadingModal {
+    display: none; /* 기본 숨김 */
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+/*     background: rgba(0,0,0,0.5); /* 반투명 검정 */ */
+    z-index: 9999;
+/*     display: flex; */
+    align-items: center;
+    justify-content: center;
+}
+
+/* 내용 박스 */
+#loadingContent {
+    background: #fff;
+    padding: 30px 50px;
+    border-radius: 10px;
+    text-align: center;
+    min-width: 300px;
+    box-shadow: 0 0 20px rgba(0,0,0,0.3);
+}
+
+/* 로딩 스피너 */
+.spinner {
+    border: 6px solid #f3f3f3; 
+    border-top: 6px solid #3498db; 
+    border-radius: 50%;
+    width: 40px;
+    height: 40px;
+    animation: spin 1s linear infinite;
+    margin: 0 auto 15px;
+}
+
+@keyframes spin {
+    0% { transform: rotate(0deg);}
+    100% { transform: rotate(360deg);}
+}
+
+/* 진행률 바 */
+#progressWrap {
+    width: 100%;
+    height: 20px;
+    background: #eee;
+    border-radius: 10px;
+    margin: 10px 0;
+}
+
+#progressBar {
+    width: 0%;
+    height: 100%;
+    background: #4caf50;
+    border-radius: 10px;
+}
+
+#progressText {
+    margin-top: 5px;
+    font-weight: bold;
+}
+</style>
 </head>
 <body leftmargin="0" topmargin="0" marginheight="0" marginwidth="0">
 <!--
@@ -18,5 +90,16 @@ var waitWin;
 
 <iframe src="${pageContext.request.contextPath}/admins/${menuId}/${pId}.do?isFirst=true" frameborder="0" height="740" width="100%" scrolling="yes" name="iframeMain" style="overflow-x: hidden;"></iframe>
 
+<!-- 로딩 모달 -->
+<div id="loadingModal">
+    <div id="loadingContent">
+        <div class="spinner"></div>
+        <div id="loadingText">엑셀 파일 생성 중...</div>
+        <div id="progressWrap">
+            <div id="progressBar"></div>
+        </div>
+        <div id="progressText">0%</div>
+    </div>
+</div>
 </body>
 </html>