如题 废话不多 直接上代码
/**
* @author: 骑猪撞地球QAQ
* @date: 2020/10/27 13:51
* @content:
*/
public class DataExportXls {
/**
* 数据导出
*
* @param queryVo 查询参数
* @param flag 是否导出图片 1:不导出; 非1均为导出
* @param request
* @param response
*/
public void exportXls(QueryVo queryVo, Integer flag, HttpServletRequest request,
HttpServletResponse response) {
Page page = new Page("1", "50000");
// 查询数据获取到需要导出的结果集
List<DetailVo> result = pageInfo.getList();
try {
//内存中缓存记录行数
int rowaccess = 100;
SXSSFWorkbook wb = new SXSSFWorkbook(rowaccess);
// sheet最大行数
int maxRowNums = 50000;
int sheetNum = result.size() / maxRowNums + 1;
Sheet[] sheets = new Sheet[sheetNum];
CellStyle headerStyle = wb.createCellStyle();
headerStyle.setAlignment(HorizontalAlignment.CENTER);
headerStyle.setVerticalAlignment(VerticalAlignment.CENTER);
headerStyle.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());
headerStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
headerStyle.setWrapText(true);
Font font = wb.createFont();
font.setFontName("宋体");//设置字体
font.setFontHeightInPoints((short) 14);//设置字体大小
font.setBold(true);//粗体显示
headerStyle.setFont(font);
for (int i = 0; i < sheets.length; i++) {
// 创建Excel的工作sheet,对应到一个excel文档的tab
sheets[i] = wb.createSheet("数据查看" + (i + 1));
Row rowTitle = sheets[i].createRow(0);
Cell cell0 = rowTitle.createCell((short) 0);
cell0.setCellStyle(headerStyle);
cell0.setCellValue("第一列");
Cell cell1 = rowTitle.createCell((short) 1);
cell1.setCellStyle(headerStyle);
cell1.setCellValue("第二列");
Cell cell2 = rowTitle.createCell((short) 2);
cell2.setCellStyle(headerStyle);
cell2.setCellValue("第三列");
Cell cell3 = rowTitle.createCell((short) 3);
cell3.setCellStyle(headerStyle);
cell3.setCellValue("第四列");
Cell cell4 = rowTitle.createCell((short) 4);
cell4.setCellStyle(headerStyle);
cell4.setCellValue("第五列");
Cell cell5 = rowTitle.createCell((short) 5);
cell5.setCellStyle(headerStyle);
cell5.setCellValue("第六列");
Cell cell6 = rowTitle.createCell((short) 6);
cell6.setCellStyle(headerStyle);
cell6.setCellValue("图片");
}
for (int i = 0; i < result.size(); i++) {
int j = i / maxRowNums;
DetailVo s = result.get(i);
Row row = sheets[j].createRow(i % maxRowNums + 1);
row.setHeight((short) 2000);
BufferedImage bufferImg = null;
//先把读进来的图片放到一个ByteArrayOutputStream中，以便产生ByteArray
//画图的顶级管理器，一个sheet只能获取一个（一定要注意这点）
Drawing patriarch = sheets[j].createDrawingPatriarch();
row.createCell((short) 1);
Cell cell0 = row.createCell((short) 0);
cell0.setCellValue(s.getEmployeeName());
Cell cell1 = row.createCell((short) 1);
cell1.setCellValue(s.getPositionName());
Cell cell2 = row.createCell((short) 2);
cell2.setCellValue(s.getOrgName());
Cell cell3 = row.createCell((short) 3);
cell3.setCellValue(s.getDate());
Cell cell4 = row.createCell((short) 4);
cell4.setCellValue(s.getType());
Cell cell5 = row.createCell((short) 5);
cell5.setCellValue(s.getGroupName());
// 获取照片并且处理
List<PicVo> picList = getPicListByBusinessIdAndType(s.getId(), s.getType());
if (CollectionUtil.listNotEmptyNotSizeZero(picList)) {
for (int k = 0; k < picList.size(); k++) {
PicVo picVo = picList.get(k);
if (flag != null && flag.equals(1)) {
// 等于 1 则不导出
if (StringUtil.isBlank(s.getSignPic())) {
Cell cell6 = row.createCell((short) 6);
cell6.setCellValue("");
} else {
setPicture(wb, bufferImg, row, patriarch, picVo.getUrlPath(), i, k);
}
}
}
}
}
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
String filename = "导出记录" + sdf.format(new Date()) + ExcelTypeEnum.XLSX.getValue();// 设置下载时客户端Excel的名称
if (request.getHeader("User-Agent").toLowerCase().indexOf("firefox") > 0) {
filename = new String(filename.getBytes("UTF-8"), "ISO8859-1");// firefox浏览器
} else if (request.getHeader("User-Agent").toUpperCase().indexOf("MSIE") > 0
|| request.getHeader("User-Agent").toUpperCase().indexOf("TRIDENT") > 0
|| request.getHeader("User-Agent").toUpperCase().indexOf("EDGE") > 0) {
filename = URLEncoder.encode(filename, "UTF-8");// IE浏览器
} else if (request.getHeader("User-Agent").toUpperCase().indexOf("CHROME") > 0) {
filename = new String(filename.getBytes("UTF-8"), "ISO8859-1");// 谷歌
}
response.setContentType("applicationnd.ms-excel");
response.addHeader("Content-Disposition", "attachment;filename=" + filename);
OutputStream os = response.getOutputStream();
wb.write(os);
os.flush();
// 需注意 关闭流不应该在这里 此处需优化 只是写了个demo
os.close();
} catch (Exception e) {
log.error(e.getMessage());
}
}
/**
* 设置图片
*
* @param wb
* @param bufferImg
* @param row
* @param patriarch
* @param path
* @param i
*/
private void setPicture(SXSSFWorkbook wb, BufferedImage bufferImg, Row row, Drawing patriarch, String path, int i, int k) {
XSSFClientAnchor anchor = null;
if (StringUtil.isBlank(path)) {
Cell cell10 = row.createCell((short) 10);
cell10.setCellValue("");
} else {
try {
URL url = new URL(path);
bufferImg = ImageIO.read(url);
ByteArrayOutputStream byteArrayOut = new ByteArrayOutputStream();
ImageIO.write(bufferImg, "jpg", byteArrayOut);
// anchor主要用于设置图片的属性 此处可以调图片的展示位置 具体按照自己情况而定
anchor = new XSSFClientAnchor(0, 0, 0, 0, (short) 12 + k, i + 1, (short) 13 + k, i + 2);
anchor.setAnchorType(ClientAnchor.AnchorType.MOVE_DONT_RESIZE);
// 插入图片
patriarch.createPicture(anchor, wb.addPicture(byteArrayOut.toByteArray(), Workbook.PICTURE_TYPE_JPEG));
} catch (Exception e) {
log.error(e.getMessage());
}
}
}
}
附 HSSFClientAnchor 参数说明
HSSFClientAnchor用于创建一个新的端锚,并设置锚的左下和右下坐标,用于图片插入/画线等等。
HSSFClientAnchor(int dx1, int dy1, int dx2, int dy2, short col1, int row1, short col2, int row2)
dx1 dy1 起始单元格中的x,y坐标.
dx2 dy2 结束单元格中的x,y坐标
col1,row1 指定起始的单元格，下标从0开始
col2,row2 指定结束的单元格 ，下标从0开始