1.新增文件工具类

fhx

2023-04-06 c1a9eee9c9aa0d3c7592fa75e70243e0297b3a0d

 src/main/java/com/hx/util/ExcelUtil.java

@@ -9,12 +9,11 @@
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;
import java.awt.image.BufferedImage;
import java.io.*;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
@@ -114,7 +113,7 @@
    */
   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();
@@ -229,6 +228,94 @@
                  // 在索引0的位置创建单元格（左上端）
                  sheet.setColumnWidth(i,width);
                  HSSFCell 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;
   }

   /**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
@@ -705,4 +792,99 @@
      return "";
   }

   /**
    * p判断是否excel文件
    * @param file
    * @return
    */
   public static boolean isExcel(MultipartFile file){
      String fileName = file.getOriginalFilename();
      if (!fileName.matches("^.+\\.(?i)(xls)$") && !fileName.matches("^.+\\.(?i)(xlsx)$")) {
         return false;
      }
      return true;
   }





   public static File createExcelByImg(String[] headList, String[] fieldList, List<Map<String, Object>> dataList, Integer height, Integer width) throws Exception {
      File file = File.createTempFile("temp", ".xls");
      FileOutputStream fileOut = null;
      BufferedImage bufferImg = null;

      try {
         ByteArrayOutputStream byteArrayOut = new ByteArrayOutputStream();
         if (height == null) {
            height = 450;
         }

         if (width == null) {
            width = 1000;
         }

         HSSFWorkbook workbook = new HSSFWorkbook();
         HSSFCellStyle boderStyle = workbook.createCellStyle();
         boderStyle.setVerticalAlignment((short)1);
         boderStyle.setAlignment((short)2);
         HSSFSheet sheet = workbook.createSheet();
         HSSFPatriarch patriarch = sheet.createDrawingPatriarch();
         HSSFRow row = sheet.createRow(0);

         HSSFCell anchor;
         for(int i = 0; i < headList.length; ++i) {
            row.setHeight(height.shortValue());
            sheet.setColumnWidth(i, width);
            anchor = row.createCell(i);
            anchor.setCellType(1);
            anchor.setCellValue(headList[i]);
            anchor.setCellStyle(boderStyle);
         }

         HSSFRow row_value = null;
         anchor = null;
         HSSFCell cell = null;
         if (dataList != null) {
            for(int n = 0; n < dataList.size(); ++n) {
               row_value = sheet.createRow(n + 1);
               row_value.setHeight(height.shortValue());
               Map<String, Object> dataMap = (Map)dataList.get(n);

               for(int i = 0; i < fieldList.length; ++i) {
                  sheet.setColumnWidth(i, width);
                  cell = row_value.createCell(i);
                  cell.setCellType(1);
                  Object value = dataMap.get(fieldList[i]);
                  if (value != null && "class java.io.File".equals(value.getClass().toString())) {
                     File file2 = (File)value;
                     if (file2 == null) {
                        cell.setCellValue("");
                     } else {
                        bufferImg = ImageIO.read(file2);
                        ImageIO.write(bufferImg, "jpg", byteArrayOut);
                        HSSFClientAnchor anchor1 = new HSSFClientAnchor(0, 0, 1023, 255, (short)i, n + 1, (short)i, n + 1);
                        anchor1.setAnchorType(0);
                        patriarch.createPicture(anchor1, workbook.addPicture(byteArrayOut.toByteArray(), 5));
                     }
                  } else {
                     cell.setCellValue(objToString(dataMap.get(fieldList[i])));
                     cell.setCellStyle(boderStyle);
                  }
               }
            }
         }

         FileOutputStream fOut = new FileOutputStream(file);
         workbook.write(fOut);
         fOut.flush();
         fOut.close();
      } catch (Exception var25) {
         var25.printStackTrace();
      } finally {
         file.deleteOnExit();
      }

      return file;
   }
}