Excel注解支持Image图片导入

RuoYi

2021-08-11 5b2e39f3ca207d8a02cdb772fa5bbbe3b71967f8

 src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java

@@ -18,6 +18,8 @@
import java.util.Set;

import java.util.UUID;

import java.util.stream.Collectors;

import javax.servlet.http.HttpServletResponse;

import org.apache.poi.ooxml.POIXMLDocumentPart;

import org.apache.poi.ss.usermodel.BorderStyle;

import org.apache.poi.ss.usermodel.Cell;

import org.apache.poi.ss.usermodel.CellStyle;

@@ -32,15 +34,23 @@
import org.apache.poi.ss.usermodel.Font;

import org.apache.poi.ss.usermodel.HorizontalAlignment;

import org.apache.poi.ss.usermodel.IndexedColors;

import org.apache.poi.ss.usermodel.PictureData;

import org.apache.poi.ss.usermodel.Row;

import org.apache.poi.ss.usermodel.Sheet;

import org.apache.poi.ss.usermodel.VerticalAlignment;

import org.apache.poi.ss.usermodel.Workbook;

import org.apache.poi.ss.usermodel.WorkbookFactory;

import org.apache.poi.ss.util.CellRangeAddressList;

import org.apache.poi.util.IOUtils;

import org.apache.poi.xssf.streaming.SXSSFWorkbook;

import org.apache.poi.xssf.usermodel.XSSFClientAnchor;

import org.apache.poi.xssf.usermodel.XSSFDataValidation;

import org.apache.poi.xssf.usermodel.XSSFDrawing;

import org.apache.poi.xssf.usermodel.XSSFPicture;

import org.apache.poi.xssf.usermodel.XSSFShape;

import org.apache.poi.xssf.usermodel.XSSFSheet;

import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import org.openxmlformats.schemas.drawingml.x2006.spreadsheetDrawing.CTMarker;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import com.ruoyi.common.core.text.Convert;

@@ -49,6 +59,7 @@
import com.ruoyi.common.utils.DictUtils;

import com.ruoyi.common.utils.StringUtils;

import com.ruoyi.common.utils.file.FileTypeUtils;

import com.ruoyi.common.utils.file.FileUtils;

import com.ruoyi.common.utils.file.ImageUtils;

import com.ruoyi.common.utils.reflect.ReflectUtils;

import com.ruoyi.framework.aspectj.lang.annotation.Excel;

@@ -168,24 +179,15 @@
        this.type = Type.IMPORT;

        this.wb = WorkbookFactory.create(is);

        List<T> list = new ArrayList<T>();

        Sheet sheet = null;

        if (StringUtils.isNotEmpty(sheetName))

        {

            // 如果指定sheet名,则取指定sheet中的内容.

            sheet = wb.getSheet(sheetName);

        }

        else

        {

            // 如果传入的sheet名不存在则默认指向第1个sheet.

            sheet = wb.getSheetAt(0);

        }



        // 如果指定sheet名,则取指定sheet中的内容 否则默认指向第1个sheet

        Sheet sheet = StringUtils.isNotEmpty(sheetName) ? wb.getSheet(sheetName) : wb.getSheetAt(0);

        if (sheet == null)

        {

            throw new IOException("文件sheet不存在");

        }



        int rows = sheet.getPhysicalNumberOfRows();

        Map<String, PictureData> pictures = getSheetPictrues((XSSFSheet) sheet, (XSSFWorkbook) wb);

        // 获取最后一个非空行的行下标，比如总行数为n，则返回的为n-1

        int rows = sheet.getLastRowNum();



        if (rows > 0)

        {

@@ -225,10 +227,15 @@
                    }

                }

            }

            for (int i = 1; i < rows; i++)

            for (int i = 1; i <= rows; i++)

            {

                // 从第2行开始取数据,默认第一行是表头.

                Row row = sheet.getRow(i);

                // 判断当前行是否是空行

                if (isRowEmpty(row))

                {

                    continue;

                }

                T entity = null;

                for (Map.Entry<Integer, Field> entry : fieldsMap.entrySet())

                {

@@ -311,6 +318,20 @@
                        {

                            val = reverseDictByExp(Convert.toStr(val), attr.dictType(), attr.separator());

                        }

                        else if (ColumnType.IMAGE == attr.cellType())

                        {

                            if (StringUtils.isNull(pictures))

                            {

                                val = "";

                            }

                            PictureData image = pictures.get(row.getRowNum() + "_" + entry.getKey());

                            if (image == null)

                            {

                                val = "";

                            }

                            byte[] data = image.getData();

                            val = FileUtils.writeImportBytes(data);

                        }

                        ReflectUtils.invokeSetter(entity, propertyName, val);

                    }

                }

@@ -336,6 +357,23 @@
    /**

     * 对list数据源将其里面的数据导入到excel表单

     * 

     * @param response 返回数据

     * @param list 导出数据集合

     * @param sheetName 工作表的名称

     * @return 结果

     * @throws IOException

     */

    public void exportExcel(HttpServletResponse response, List<T> list, String sheetName) throws IOException

    {

        response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");

        response.setCharacterEncoding("utf-8");

        this.init(list, sheetName, Type.EXPORT);

        exportExcel(response.getOutputStream());

    }



    /**

     * 对list数据源将其里面的数据导入到excel表单

     * 
     * @param sheetName 工作表的名称

     * @return 结果

     */

@@ -348,12 +386,72 @@
    /**

     * 对list数据源将其里面的数据导入到excel表单

     * 

     * @param sheetName 工作表的名称

     * @return 结果

     */

    public void importTemplateExcel(HttpServletResponse response, String sheetName) throws IOException

    {

        response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");

        response.setCharacterEncoding("utf-8");

        this.init(null, sheetName, Type.IMPORT);

        exportExcel(response.getOutputStream());

    }



    /**

     * 对list数据源将其里面的数据导入到excel表单

     * 
     * @return 结果

     */

    public void exportExcel(OutputStream out)

    {

        try

        {

            writeSheet();

            wb.write(out);

        }

        catch (Exception e)

        {

            log.error("导出Excel异常{}", e.getMessage());

        }

        finally

        {

            IOUtils.closeQuietly(wb);

            IOUtils.closeQuietly(out);

        }

    }



    /**

     * 对list数据源将其里面的数据导入到excel表单

     * 
     * @return 结果

     */

    public AjaxResult exportExcel()

    {

        OutputStream out = null;

        try

        {

            writeSheet();

            String filename = encodingFilename(sheetName);

            out = new FileOutputStream(getAbsoluteFile(filename));

            wb.write(out);

            return AjaxResult.success(filename);

        }

        catch (Exception e)

        {

            log.error("导出Excel异常{}", e.getMessage());

            throw new CustomException("导出Excel失败，请联系网站管理员！");

        }

        finally

        {

            IOUtils.closeQuietly(wb);

            IOUtils.closeQuietly(out);

        }

    }



    /**

     * 创建写入数据到Sheet

     */

    public void writeSheet()

        {

            // 取出一共有多少个sheet.

            double sheetNo = Math.ceil(list.size() / sheetSize);

@@ -374,41 +472,6 @@
                {

                    fillExcelData(index, row);

                    addStatisticsRow();

                }

            }

            String filename = encodingFilename(sheetName);

            out = new FileOutputStream(getAbsoluteFile(filename));

            wb.write(out);

            return AjaxResult.success(filename);

        }

        catch (Exception e)

        {

            log.error("导出Excel异常{}", e.getMessage());

            throw new CustomException("导出Excel失败，请联系网站管理员！");

        }

        finally

        {

            if (wb != null)

            {

                try

                {

                    wb.close();

                }

                catch (IOException e1)

                {

                    e1.printStackTrace();

                }

            }

            if (out != null)

            {

                try

                {

                    out.close();

                }

                catch (IOException e1)

                {

                    e1.printStackTrace();

                }

            }

        }

    }

@@ -537,12 +600,14 @@
        }

        else if (ColumnType.NUMERIC == attr.cellType())

        {

            if (StringUtils.isNotNull(value))

            {

            cell.setCellValue(StringUtils.contains(Convert.toStr(value), ".") ? Convert.toDouble(value) : Convert.toInt(value));

            }

        }

        else if (ColumnType.IMAGE == attr.cellType())

        {

            ClientAnchor anchor = new XSSFClientAnchor(0, 0, 0, 0, (short) cell.getColumnIndex(), cell.getRow().getRowNum(), (short) (cell.getColumnIndex() + 1),

                    cell.getRow().getRowNum() + 1);

            ClientAnchor anchor = new XSSFClientAnchor(0, 0, 0, 0, (short) cell.getColumnIndex(), cell.getRow().getRowNum(), (short) (cell.getColumnIndex() + 1), cell.getRow().getRowNum() + 1);

            String imagePath = Convert.toStr(value);

            if (StringUtils.isNotEmpty(imagePath))

            {

@@ -852,10 +917,9 @@
    {

        if (statistics.size() > 0)

        {

            Cell cell = null;

            Row row = sheet.createRow(sheet.getLastRowNum() + 1);

            Set<Integer> keys = statistics.keySet();

            cell = row.createCell(0);

            Cell cell = row.createCell(0);

            cell.setCellStyle(styles.get("total"));

            cell.setCellValue("合计");

            

@@ -1090,4 +1154,59 @@
        }

        return val;

    }



    /**

     * 判断是否是空行

     * 
     * @param row 判断的行

     * @return

     */

    private boolean isRowEmpty(Row row)

    {

        if (row == null)

        {

            return true;

        }

        for (int i = row.getFirstCellNum(); i < row.getLastCellNum(); i++)

        {

            Cell cell = row.getCell(i);

            if (cell != null && cell.getCellType() != CellType.BLANK)

            {

                return false;

            }

        }

        return true;

    }



    /**

     * 获取Excel图片

     *

     * @param sheet 当前sheet对象

     * @param workbook 工作簿对象

     * @return Map key:图片单元格索引（1_1）String，value:图片流PictureData

     */

    public static Map<String, PictureData> getSheetPictrues(XSSFSheet sheet, XSSFWorkbook workbook)

    {

        Map<String, PictureData> sheetIndexPicMap = new HashMap<String, PictureData>();

        for (POIXMLDocumentPart dr : sheet.getRelations())

        {

            if (dr instanceof XSSFDrawing)

            {

                XSSFDrawing drawing = (XSSFDrawing) dr;

                List<XSSFShape> shapes = drawing.getShapes();

                for (XSSFShape shape : shapes)

                {

                    if (shape instanceof XSSFPicture)

                    {

                        XSSFPicture pic = (XSSFPicture) shape;

                        XSSFClientAnchor anchor = pic.getPreferredSize();

                        CTMarker ctMarker = anchor.getFrom();

                        String picIndex = ctMarker.getRow() + "_" + ctMarker.getCol();

                        sheetIndexPicMap.put(picIndex, pic.getPictureData());

                    }

                }

            }

        }

        return sheetIndexPicMap;

    }

}