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Excel注解支持Image图片导出

This commit is contained in:
RuoYi 2020-12-27 10:04:45 +08:00
parent a9c6ba12e6
commit 0187344798
4 changed files with 211 additions and 9 deletions
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2
ruoyi-common/src/main/java/com/ruoyi/common/annotation/Excel.java
View File

@ -149,7 +149,7 @@ public @interface Excel
public enum ColumnType
{
NUMERIC(0), STRING(1);
NUMERIC(0), STRING(1), IMAGE(2);
private final int value;
ColumnType(int value)

29
ruoyi-common/src/main/java/com/ruoyi/common/utils/file/FileTypeUtils.java
View File

@ -44,4 +44,33 @@ public class FileTypeUtils
}
return fileName.substring(separatorIndex + 1).toLowerCase();
}
/**
* 获取文件类型
*
* @param photoByte 文件字节码
* @return 后缀（不含".")
*/
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;
}
}

100
ruoyi-common/src/main/java/com/ruoyi/common/utils/file/ImageUtils.java Normal file
View File

@ -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.config.RuoYiConfig;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.utils.StringUtils;
/**
* 图片处理工具类
*
* @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;
}
/**
* 读取文件为字节数据
*
* @param key 地址
* @return 字节数据
*/
public static byte[] readFile(String url)
{
InputStream in = null;
ByteArrayOutputStream baos = null;
try
{
if (url.startsWith("http"))
{
// 网络地址
URL urlObj = new URL(url);
URLConnection urlConnection = urlObj.openConnection();
urlConnection.setConnectTimeout(30 * 1000);
urlConnection.setReadTimeout(60 * 1000);
urlConnection.setDoInput(true);
in = urlConnection.getInputStream();
}
else
{
// 本机地址
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);
}
}
}

79
ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java
View File

@ -22,10 +22,12 @@ import org.apache.poi.ss.usermodel.BorderStyle;
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.Workbook;
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;
@ -51,6 +54,8 @@ import com.ruoyi.common.exception.CustomException;
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;
/**
@ -102,6 +107,11 @@ public class ExcelUtil<T>
*/
private List<Object[]> fields;
/**
* 最大高度
*/
private short maxHeight;
/**
* 统计列表
*/
@ -239,7 +249,15 @@ public class ExcelUtil<T>
}
else
{
val = Convert.toStr(val);
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 @@ public class ExcelUtil<T>
{
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)));
}
}
}
/**
* 获取画布
*/
public static Drawing<?> getDrawingPatriarch(Sheet sheet)
{
if (sheet.getDrawingPatriarch() == null)
{
sheet.createDrawingPatriarch();
}
return sheet.getDrawingPatriarch();
}
/**
* 获取图片类型,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 @@ public class ExcelUtil<T>
{
// 设置列宽
sheet.setColumnWidth(column, (int) ((attr.width() + 0.72) * 256));
row.setHeight((short) (attr.height() * 20));
}
// 如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 @@ public class ExcelUtil<T>
try
{
// 设置行高
row.setHeight((short) (attr.height() * 20));
row.setHeight(maxHeight);
// 根据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 @@ public class ExcelUtil<T>
}
}
this.fields = this.fields.stream().sorted(Comparator.comparing(objects -> ((Excel) objects[1]).sort())).collect(Collectors.toList());
this.maxHeight = getRowHeight();
}
/**
* 根据注解获取最大行高
*/
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);
}
/**