Excel注解支持Image图片导出

RuoYi

2020-12-27 85f024c8203d4611ce22199409b0ba95e062a29c

Excel注解支持Image图片导出

 src/main/java/com/ruoyi/common/utils/file/FileTypeUtils.java

@@ -44,4 +44,33 @@
        }

        return fileName.substring(separatorIndex + 1).toLowerCase();

    }



    /**

     * èŽ·å–文件类型

     * 
     * @param photoByte æ–‡ä»¶å­—节码

     * @return åŽç¼€ï¼ˆä¸å«".")

     */

    public static String getFileExtendName(byte[] photoByte)

    {

        String strFileExtendName = "JPG";

        if ((photoByte[0] == 71) && (photoByte[1] == 73) && (photoByte[2] == 70) && (photoByte[3] == 56)

                && ((photoByte[4] == 55) || (photoByte[4] == 57)) && (photoByte[5] == 97))

        {

            strFileExtendName = "GIF";

        }

        else if ((photoByte[6] == 74) && (photoByte[7] == 70) && (photoByte[8] == 73) && (photoByte[9] == 70))

        {

            strFileExtendName = "JPG";

        }

        else if ((photoByte[0] == 66) && (photoByte[1] == 77))

        {

            strFileExtendName = "BMP";

        }

        else if ((photoByte[1] == 80) && (photoByte[2] == 78) && (photoByte[3] == 71))

        {

            strFileExtendName = "PNG";

        }

        return strFileExtendName;

    }

}

 src/main/java/com/ruoyi/common/utils/file/ImageUtils.java

¶Ô±ÈÐÂÎļþ
@@ -0,0 +1,100 @@
package com.ruoyi.common.utils.file;



import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.FileInputStream;

import java.io.InputStream;

import java.net.URL;

import java.net.URLConnection;

import java.util.Arrays;

import org.apache.poi.util.IOUtils;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import com.ruoyi.common.constant.Constants;

import com.ruoyi.common.utils.StringUtils;

import com.ruoyi.framework.config.RuoYiConfig;



/**

 * å›¾ç‰‡å¤„理工具类

 *

 * @author ruoyi

 */

public class ImageUtils

{

    private static final Logger log = LoggerFactory.getLogger(ImageUtils.class);



    public static byte[] getImage(String imagePath)

    {

        InputStream is = getFile(imagePath);

        try

        {

            return IOUtils.toByteArray(is);

        }

        catch (Exception e)

        {

            log.error("图片加载异常 {}", e);

            return null;

        }

        finally

        {

            IOUtils.closeQuietly(is);

        }

    }



    public static InputStream getFile(String imagePath)

    {

        try

        {

            byte[] result = readFile(imagePath);

            result = Arrays.copyOf(result, result.length);

            return new ByteArrayInputStream(result);

        }

        catch (Exception e)

        {

            log.error("获取图片异常 {}", e);

        }

        return null;

    }



    /**

     * è¯»å–文件为字节数据

     * 
     * @param key åœ°å€

     * @return å­—节数据

     */

    public static byte[] readFile(String url)

    {

        InputStream in = null;

        ByteArrayOutputStream baos = null;

        try

        {

            if (url.startsWith("http"))

            {

                // ç½‘络地址

                URL urlObj = new URL(url);

                URLConnection urlConnection = urlObj.openConnection();

                urlConnection.setConnectTimeout(30 * 1000);

                urlConnection.setReadTimeout(60 * 1000);

                urlConnection.setDoInput(true);

                in = urlConnection.getInputStream();

            }

            else

            {

                // æœ¬æœºåœ°å€

                String localPath = RuoYiConfig.getProfile();

                String downloadPath = localPath + StringUtils.substringAfter(url, Constants.RESOURCE_PREFIX);

                in = new FileInputStream(downloadPath);

            }

            return IOUtils.toByteArray(in);

        }

        catch (Exception e)

        {

            log.error("获取文件路径异常 {}", e);

            return null;

        }

        finally

        {

            IOUtils.closeQuietly(baos);

        }

    }

}


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

@@ -22,10 +22,12 @@
import org.apache.poi.ss.usermodel.Cell;

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

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

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

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

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

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

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

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

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

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

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

@@ -37,6 +39,7 @@
import org.apache.poi.ss.usermodel.WorkbookFactory;

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

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

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

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

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

@@ -45,6 +48,8 @@
import com.ruoyi.common.utils.DateUtils;

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.ImageUtils;

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

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

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

@@ -101,6 +106,11 @@
     * æ³¨è§£åˆ—表

     */

    private List<Object[]> fields;



    /**

     * æœ€å¤§é«˜åº¦

     */

    private short maxHeight;



    /**

     * ç»Ÿè®¡åˆ—表

@@ -239,7 +249,15 @@
                        }

                        else

                        {

                            String dateFormat = field.getAnnotation(Excel.class).dateFormat();

                            if (StringUtils.isNotEmpty(dateFormat))

                            {

                                val = DateUtils.parseDateToStr(dateFormat, (Date) val);

                            }

                            else

                            {

                            val = Convert.toStr(val);

                            }

                        }

                    }

                    else if ((Integer.TYPE == fieldType || Integer.class == fieldType) && StringUtils.isNumeric(Convert.toStr(val)))

@@ -521,6 +539,47 @@
        {

            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);

            String imagePath = Convert.toStr(value);

            if (StringUtils.isNotEmpty(imagePath))

            {

                byte[] data = ImageUtils.getImage(imagePath);

                getDrawingPatriarch(cell.getSheet()).createPicture(anchor,

                        cell.getSheet().getWorkbook().addPicture(data, getImageType(data)));

            }

        }

    }

    
    /**

     * èŽ·å–画布

     */

    public static Drawing<?> getDrawingPatriarch(Sheet sheet)

    {

        if (sheet.getDrawingPatriarch() == null)

        {

            sheet.createDrawingPatriarch();

        }

        return sheet.getDrawingPatriarch();

    }



    /**

     * èŽ·å–图片类型,设置图片插入类型

     */

    public int getImageType(byte[] value)

    {

        String type = FileTypeUtils.getFileExtendName(value);

        if ("JPG".equalsIgnoreCase(type))

        {

            return Workbook.PICTURE_TYPE_JPEG;

        }

        else if ("PNG".equalsIgnoreCase(type))

        {

            return Workbook.PICTURE_TYPE_PNG;

        }

        return Workbook.PICTURE_TYPE_JPEG;

    }



    /**

@@ -536,7 +595,6 @@
        {

            // è®¾ç½®åˆ—宽

            sheet.setColumnWidth(column, (int) ((attr.width() + 0.72) * 256));

            row.setHeight((short) (attr.height() * 20));

        }

        // å¦‚果设置了提示信息则鼠标放上去提示.

        if (StringUtils.isNotEmpty(attr.prompt()))

@@ -561,7 +619,7 @@
        try

        {

            // è®¾ç½®è¡Œé«˜

            row.setHeight((short) (attr.height() * 20));

            row.setHeight(maxHeight);

            // æ ¹æ®Excel中设置情况决定是否导出,有些情况需要保持为空,希望用户填写这一列.

            if (attr.isExport())

            {

@@ -916,6 +974,21 @@
            }

        }

        this.fields = this.fields.stream().sorted(Comparator.comparing(objects -> ((Excel) objects[1]).sort())).collect(Collectors.toList());

        this.maxHeight = getRowHeight();

    }

    
    /**

     * æ ¹æ®æ³¨è§£èŽ·å–最大行高

     */

    public short getRowHeight()

    {

        double maxHeight = 0;

        for (Object[] os : this.fields)

        {

            Excel excel = (Excel) os[1];

            maxHeight = maxHeight > excel.height() ? maxHeight : excel.height();

        }

        return (short) (maxHeight * 20);

    }



    /**


 src/main/java/com/ruoyi/framework/aspectj/lang/annotation/Excel.java

@@ -149,7 +149,7 @@


    public enum ColumnType

    {

        NUMERIC(0), STRING(1);

        NUMERIC(0), STRING(1), IMAGE(2);

        private final int value;



        ColumnType(int value)