| | |
| | | import org.apache.poi.ss.usermodel.Row; |
| | | import org.apache.poi.ss.usermodel.Sheet; |
| | | import org.apache.poi.ss.usermodel.Workbook; |
| | | import org.apache.poi.xssf.usermodel.XSSFCell; |
| | | import org.apache.poi.xssf.usermodel.XSSFRow; |
| | | import org.apache.poi.xssf.usermodel.XSSFSheet; |
| | | import org.apache.poi.xssf.usermodel.XSSFWorkbook; |
| | | import org.apache.poi.xssf.usermodel.*; |
| | | import org.springframework.web.multipart.MultipartFile; |
| | | |
| | | import javax.imageio.ImageIO; |
| | |
| | | */ |
| | | public static File createExcel(String[] headList, String[] fieldList, |
| | | List<Map<String, Object>> dataList) throws Exception { |
| | | File file = File.createTempFile("temp", ".xls"); |
| | | File file = File.createTempFile("temp", ".xlsx"); |
| | | try{ |
| | | // 创建新的Excel 工作簿 |
| | | HSSFWorkbook workbook = new HSSFWorkbook(); |
| | |
| | | return file; |
| | | } |
| | | |
| | | /**无限制行数生成ecxel,生成临时文件 |
| | | * @param headList |
| | | * Excel文件Head标题集合 |
| | | * @param fieldList |
| | | * Excel文件Field标题集合 根据field来寻找位置填充表格 |
| | | * @param dataList |
| | | * Excel文件数据内容部分 |
| | | * @param height 单元格高度,默认450 |
| | | * @param width 单元格宽度,默认5000 |
| | | * @throws Exception |
| | | */ |
| | | public static File createXSSExcel(String[] headList, String[] fieldList, List<Map<String, Object>> dataList |
| | | ,Integer height,Integer width) throws Exception { |
| | | File file = File.createTempFile("temp", ".xls"); |
| | | try{ |
| | | |
| | | if(height == null){ |
| | | height = 450; |
| | | } |
| | | if(width == null){ |
| | | width = 5000; |
| | | } |
| | | // 创建新的Excel 工作簿 |
| | | XSSFWorkbook workbook = new XSSFWorkbook(); |
| | | |
| | | |
| | | //合并的单元格样式 |
| | | XSSFCellStyle boderStyle = workbook.createCellStyle(); |
| | | //垂直居中 |
| | | boderStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); |
| | | boderStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 创建一个居中格式 |
| | | |
| | | // 在Excel工作簿中建一工作表,其名为缺省值 |
| | | // 如要新建一名为"效益指标"的工作表,其语句为: |
| | | // HSSFSheet sheet = workbook.createSheet("效益指标"); |
| | | XSSFSheet sheet = workbook.createSheet(); |
| | | // 在索引0的位置创建行(最顶端的行) |
| | | XSSFRow row = sheet.createRow(0); |
| | | // =============================================================== |
| | | for (int i = 0; i < headList.length; i++) { |
| | | //高度 |
| | | row.setHeight(height.shortValue()); |
| | | sheet.setColumnWidth(i,width); |
| | | // 在索引0的位置创建单元格(左上端) |
| | | XSSFCell cell = row.createCell(i); |
| | | // 定义单元格为字符串类型 |
| | | cell.setCellType(HSSFCell.CELL_TYPE_STRING); |
| | | // 在单元格中输入一些内容 |
| | | cell.setCellValue(headList[i]); |
| | | cell.setCellStyle(boderStyle); |
| | | } |
| | | // =============================================================== |
| | | if (dataList != null) { |
| | | for (int n = 0; n < dataList.size(); n++) { |
| | | // 在索引1的位置创建行 |
| | | XSSFRow row_value = sheet.createRow(n + 1); |
| | | row_value.setHeight(height.shortValue()); |
| | | Map<String, Object> dataMap = dataList.get(n); |
| | | // =============================================================== |
| | | for (int i = 0; i < fieldList.length; i++) { |
| | | // 在索引0的位置创建单元格(左上端) |
| | | sheet.setColumnWidth(i,width); |
| | | XSSFCell cell = row_value.createCell(i); |
| | | // 定义单元格为字符串类型 |
| | | cell.setCellType(HSSFCell.CELL_TYPE_STRING); |
| | | // 在单元格中输入一些内容 |
| | | cell.setCellValue(objToString(dataMap.get(fieldList[i]))); |
| | | cell.setCellStyle(boderStyle); |
| | | } |
| | | // =============================================================== |
| | | } |
| | | } |
| | | |
| | | // 新建一输出文件流 |
| | | FileOutputStream fOut = new FileOutputStream(file); |
| | | // 把相应的Excel 工作簿存盘 |
| | | workbook.write(fOut); |
| | | fOut.flush(); |
| | | // 操作结束,关闭文件 |
| | | fOut.close(); |
| | | }catch (Exception e){ |
| | | |
| | | }finally { |
| | | file.deleteOnExit(); |
| | | } |
| | | return file; |
| | | } |
| | | |
| | | |
| | | private static String objToString(Object obj) { |
| | | if (obj == null) { |