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私はデータベースからデータを取得してExcelファイルとしてダウンロードするサービスコールを作成しています。私がサービスを呼び出すと、私はダウンロードするファイルを取得しますが、私はそれを開いたときに空です！私のログには何のエラーも見られません。実際には、私のロガーはすべてがうまくいくようにしています。AbstractExcelView空のドキュメントを返す
エクセルビルダー
public class PromotionExportExcelBuilder extends AbstractExcelView {
@SuppressWarnings("unchecked")
@Override
protected void buildExcelDocument(Map<String, Object> model, HSSFWorkbook workbook, HttpServletRequest request,
HttpServletResponse response) throws Exception {
List<PromotionRequestDTO> promoCodes = (List<PromotionRequestDTO>) model.get("promoCodes");
if (CollectionUtils.isNotEmpty(promoCodes)) {
ServletOutputStream output = response.getOutputStream();
// create style for header cells
CellStyle style = workbook.createCellStyle();
Font font = workbook.createFont();
font.setFontName("Arial");
style.setFillForegroundColor(HSSFColor.BLUE.index);
style.setFillPattern(CellStyle.SOLID_FOREGROUND);
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
font.setColor(HSSFColor.WHITE.index);
style.setFont(font);
Integer totalPromos = promoCodes.size();
logger.debug(totalPromos + " promo codes are being exported");
Integer numberOfSheets = 1;
// Only want a set number of codes per sheet
if (totalPromos > PromotionMicroServiceBusinessConstants.PROMO_RECORDS_PER_SHEET) {
numberOfSheets = (totalPromos/PromotionMicroServiceBusinessConstants.PROMO_RECORDS_PER_SHEET) + 1;
}
logger.debug(numberOfSheets + " sheets will be needed");
for (int sheetNumber = 1; sheetNumber <= numberOfSheets; sheetNumber++) {
logger.debug("Making sheet number " + sheetNumber);
HSSFSheet sheet = workbook.createSheet("Promotion Codes Sheet " + sheetNumber);
sheet.setDefaultColumnWidth(30);
HSSFRow header = sheet.createRow(0);
header.createCell(0).setCellValue("CAMPAIGN");
header.getCell(0).setCellStyle(style);
header.createCell(1).setCellValue("PROMO CODE");
header.getCell(1).setCellStyle(style);
int rowCount = 1;
/*
CODE TO FILL OTHER ROWS. CURRENTLY COMMENTED OUT FOR TESTING
*/
logger.debug("Sheet number " + sheetNumber + " created");
}
workbook.write(output); // Actually write the workbook.
}
}
}
その後、私は、ログを見たとき、私はこれを参照してください。
28-Jun-2017 17:55:08.122 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 10904 ms
17:55:15.031 [http-nio-8080-exec-2] DEBUG o.s.web.servlet.DispatcherServlet - DispatcherServlet with name 'promocode' processing GET request for [/promocode-0.0.1-SNAPSHOT/rest/exportPromotionCodes]
17:55:15.038 [http-nio-8080-exec-2] DEBUG o.s.w.s.m.m.a.RequestMappingHandlerMapping - Looking up handler method for path /exportPromotionCodes
17:55:15.041 [http-nio-8080-exec-2] DEBUG o.s.w.s.m.m.a.RequestMappingHandlerMapping - Returning handler method [public org.springframework.web.servlet.ModelAndView com.otc.promotion.controller.PromotionController.exportPromotionCodes(java.lang.String,java.lang.String)]
17:55:15.041 [http-nio-8080-exec-2] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'promotionController'
17:55:15.046 [http-nio-8080-exec-2] DEBUG o.s.web.servlet.DispatcherServlet - Last-Modified value for [/promocode-0.0.1-SNAPSHOT/rest/exportPromotionCodes] is: -1
17:55:15.069 [http-nio-8080-exec-2] INFO c.o.p.controller.PromotionController - Request to Export promotion codes for campaign[17] and batch [null]
17:55:15.293 [http-nio-8080-exec-2] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'promotionExportView'
17:55:15.294 [http-nio-8080-exec-2] DEBUG o.s.web.servlet.DispatcherServlet - Rendering view [com.otc.promotion.views.PromotionExportExcelBuilder: name 'promotionExportView'] in DispatcherServlet with name 'promocode'
17:55:15.414 [http-nio-8080-exec-2] DEBUG c.o.p.v.PromotionExportExcelBuilder - Created Excel Workbook from scratch
17:55:15.425 [http-nio-8080-exec-2] DEBUG c.o.p.v.PromotionExportExcelBuilder - 30 promo codes are being exported
17:55:15.426 [http-nio-8080-exec-2] DEBUG c.o.p.v.PromotionExportExcelBuilder - 1 sheets will be needed
17:55:15.426 [http-nio-8080-exec-2] DEBUG c.o.p.v.PromotionExportExcelBuilder - Making sheet number 1
17:55:15.512 [http-nio-8080-exec-2] DEBUG c.o.p.v.PromotionExportExcelBuilder - Sheet number 1 created
17:55:15.574 [http-nio-8080-exec-2] DEBUG o.s.web.servlet.DispatcherServlet - Successfully completed request
をそして、私はダウンロードしたファイルを開いたとき、私はこれを参照してください。
を