chenjiahe
2023-02-07 1b181507f2564bfd327cc3a8e5d75a8620c3d09d
数据库公用方法添加
1个文件已修改
93 ■■■■■ 已修改文件
src/main/java/com/hx/util/ExcelUtil.java 93 ●●●●● 补丁 | 查看 | 原始文档 | blame | 历史
src/main/java/com/hx/util/ExcelUtil.java
@@ -9,10 +9,7 @@
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;
@@ -256,6 +253,94 @@
        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) {