java 后端導出excel

1.這里介紹使用阿里提供的方法來導出excel

2.首先我們創建一個實體類然后繼承 'BaseRowModel' 這個類,然后寫變量名在需要導出的字段上加上@ExcelProperty注解

3.然后再sql查詢語句上面的字段與變量名要一致

4.然后自己在controller層導出就好

@RequestMapping(value = "/ImportData")

 public void ImportData (@RequestBody List<mutilDataImport> projectBeans, HttpServletResponse response)throws IOException {
 String fileName = "多坐標數據導出";
 response.setContentType("multipart/form-data");
 response.setCharacterEncoding("utf-8");
 response.addHeader("Content-Disposition", "filename=" + fileName+ ".xlsx");
 String sheetName = "全量數據";
//設置樣式
 TableStyle tableStyle=new TableStyle();
 tableStyle.setTableHeadBackGroundColor(IndexedColors.SKY_BLUE);
 tableStyle.setTableContentBackGroundColor(IndexedColors.WHITE1);
 Font font = new Font();
 font.setBold(false);
 font.setFontName("宋體");
 font.setFontHeightInPoints((short) 9);
 tableStyle.setTableContentFont(font);
 ExcelWriter writer = new ExcelWriter(response.getOutputStream(), ExcelTypeEnum.XLSX);
 //寫第一個sheet, sheet1 數據全是List<String> 無模型映射關系
 Sheet sheet = new Sheet(1, 0,'剛才創建的類名'.class);
 Sheet sheet2 = new Sheet(2,1,剛才創建的類名.class, "去重數據",null);

 sheet.setTableStyle(tableStyle);
 sheet2.setTableStyle(tableStyle);
 List<mutilDataImport> mutilDataImport = dataImportService.queryprojectData(projectBeans);
 List<MutilDataImports> mutilDataImports = dataImportService.queryprojectData2(projectBeans);
 sheet.setSheetName(sheetName);
 writer.write('數據返回的集合例如這里是mutilDataImport', sheet);

 writer.write('第二個sheet返回數據的集合', sheet2);
 writer.finish();
 }

5.導出的圖如下