POI 导出到excel（包含图片,合并）
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.net.URL;
import javax.imageio.ImageIO;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFClientAnchor;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFPatriarch;
import org.apache.poi.hssf.usermodel.HSSFRichTextString;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFSimpleShape;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.HSSFColor;
/**
*
* Description: 将活动导出到excel
* @param response
* @param list
* @throws IOException
*/
public void exportExcel(HttpServletResponse response,CmActivities activity ,List listItem) throws IOException {
HSSFWorkbook workbook = new HSSFWorkbook ();// 创建一个Excel文件
HSSFSheet sheet = workbook.createSheet(activity .getActivitySubject());// 创建一个Excel的Sheet
sheet.setColumnWidth(0, 40 * 256);
sheet.setColumnWidth(1, 40 * 256);
sheet.setColumnWidth(2, 20 * 256);
//row 1 - activitySublect -----------------------start
HSSFRow row1 = sheet.createRow(0);
HSSFCell cell1 = row1.createCell(0);
//活动标题
cell1.setCellValue( activity.getActivitySubject());
//合并列
CellRangeAddress region1= new CellRangeAddress(0, 0, 0, 2);
sheet.addMergedRegion( region1);
row1.setHeightInPoints(40);
//style
HSSFCellStyle style1= workbook.createCellStyle();
style1.setAlignment(HSSFCellStyle. ALIGN_CENTER);//水平居中
style1.setVerticalAlignment(HSSFCellStyle. VERTICAL_CENTER);//垂直居中
HSSFFont font1 = workbook.createFont();
// font.setFontName("华文行楷");//设置字体名称
font1.setFontHeightInPoints(( short)28);//设置字号
font1.setColor(HSSFColor.RED. index);//设置字体颜色
style1.setFont( font1);
cell1.setCellStyle( style1);
//row 1 - activitySublect -----------------------end
//row 2 - activity Date -----------------------start
HSSFRow row2 = sheet.createRow(1);
HSSFCell cell2 = row2.createCell(1);
// HSSFCell cell2_0 = row2.createCell(0);
//img --start
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
// 将图片写入流中
BufferedImage bufferImg = ImageIO.read(getInputStream(activity .getActivityPictrueUrl()));
ImageIO. write(bufferImg, "PNG", outStream);
// 利用HSSFPatriarch将图片写入EXCEL
HSSFPatriarch patri = sheet.createDrawingPatriarch();
HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 0, 0,
( short) 0, 1, (short ) 1,3);
patri.createPicture( anchor, workbook.addPicture(
outStream.toByteArray(), HSSFWorkbook.PICTURE_TYPE_PNG));
//img -- end
cell2.setCellValue( "活动时间：" +DateUtil.getDateTimeCN (activity .getStartDate())+" 至 "+DateUtil.getDateTimeCN (activity .getEndDate()));
//合并列
CellRangeAddress region2= new CellRangeAddress(1, 1, 1, 2);
sheet.addMergedRegion( region2);
// 合并列
CellRangeAddress region2_1 = new CellRangeAddress(1, 2, 0, 0);
sheet.addMergedRegion( region2_1);
row2.setHeightInPoints(40);
//style
HSSFCellStyle style2= workbook.createCellStyle();
style2.setAlignment(HSSFCellStyle. ALIGN_CENTER);//水平居中
style2.setVerticalAlignment(HSSFCellStyle. VERTICAL_CENTER);//垂直居中
cell2.setCellStyle( style2);
//row 2 - activity Date -----------------------end
//row 3 - activityContent -----------------------start
HSSFRow row3 = sheet.createRow(2);
HSSFCell cell3 = row3.createCell(1);
cell3.setCellValue( activity.getActivityContent());
// 合并列
CellRangeAddress region3 = new CellRangeAddress(2, 2, 1, 2);
sheet.addMergedRegion( region3);
// sheet.setColumnWidth(1, 31 * 256);//设置第一列的宽度是31个字符宽度
row3.setHeightInPoints(60); //设置行的高度是50个点
HSSFCellStyle style3= workbook.createCellStyle();
style3.setAlignment(HSSFCellStyle. ALIGN_CENTER);//水平居中
style3.setVerticalAlignment(HSSFCellStyle. VERTICAL_CENTER);//垂直居中
style3.setWrapText( true);//自动换行
cell3.setCellStyle( style3);
//row 3 - activityContent -----------------------end
//row 4 - items List header -------------------------start
HSSFRow row4 = sheet.createRow(3);
HSSFCell cell4_1 = row4.createCell(0);
HSSFCell cell4_2 = row4.createCell(1);
HSSFCell cell4_3 = row4.createCell(2);
cell4_1.setCellValue( "商品图片" );
cell4_2.setCellValue( "商品名称" );
cell4_3.setCellValue( "商品价格" );
HSSFCellStyle style4= workbook.createCellStyle();
style4.setAlignment(HSSFCellStyle. ALIGN_CENTER);//水平居中
style4.setVerticalAlignment(HSSFCellStyle. VERTICAL_CENTER);//垂直居中
style4.setWrapText( true);//自动换行
style4.setFillForegroundColor(IndexedColors. SKY_BLUE.getIndex());
style4.setFillPattern(CellStyle. SOLID_FOREGROUND);
HSSFFont font4 = workbook.createFont();
// font.setFontName("华文行楷");//设置字体名称
font4.setFontHeightInPoints(( short)15);//设置字号
font4.setBold( true);
style4.setFont( font4);
// cell4.setCellStyle(style4);
cell4_1.setCellStyle( style4);
cell4_2.setCellStyle( style4);
cell4_3.setCellStyle( style4);
//row 4 - items List header -------------------------end
//row 5 - items List -------------------------start
for (int i = 0; i < listItem .size(); i++) {
MdItems items = listItem.get( i);
HSSFRow row5 = sheet.createRow( i+4);
HSSFCell cell5_1 = row5 .createCell(0);
HSSFCell cell5_2 = row5.createCell(1);
HSSFCell cell5_3 = row5.createCell(2);
row5.setHeightInPoints(80);
//商品名称
cell5_2.setCellValue( items.getItemName());
//商品价格
cell5_3.setCellValue( items.getSalePrice().toString());
HSSFCellStyle style5=workbook .createCellStyle();
style5.setAlignment(HSSFCellStyle. ALIGN_CENTER);//水平居中
style5.setVerticalAlignment(HSSFCellStyle. VERTICAL_CENTER);//垂直居中
style5.setWrapText( true);//自动换行
cell5_2.setCellStyle( style5);
cell5_3.setCellStyle( style5);
// img --start
ByteArrayOutputStream outStream_item = new ByteArrayOutputStream();
// 将图片写入流中
BufferedImage bufferImg_item = ImageIO.read(getInputStream(items .getSmallPictureUrl()));
ImageIO. write(bufferImg_item, "PNG", outStream_item);
// 利用HSSFPatriarch将图片写入EXCEL
HSSFPatriarch patri_item = sheet.createDrawingPatriarch();
HSSFClientAnchor anchor_item = new HSSFClientAnchor(0, 0, 0, 0, (short ) 0, i +4, (short) 1, i+5);
patri_item.createPicture(anchor_item , workbook.addPicture(outStream_item .toByteArray(), HSSFWorkbook.PICTURE_TYPE_PNG));
// img -- end
}
//row 5 - items List -------------------------end
// 第六步，将文件存到指定位置
try
{
String excelName=activity .getActivitySubject()+".xls";
response.addHeader( "Content-Disposition", "attachment;filename="
+ new String(excelName.getBytes("gb2312" ), "ISO-8859-1" ));
// response.addHeader("Content-Length", "" + 1024);
response.setContentType("application/vnd.ms-excel;charset=utf-8" );
OutputStream out = response.getOutputStream();
workbook.write( out);
out.close();
}
catch (Exception e )
{
e.printStackTrace();
}
}
public static InputStream getInputStream(String path){
InputStream inputStream=null ;
HttpURLConnection httpURLConnection=null ;
try{
URL url= new URL(path );
if(url !=null){
httpURLConnection=(HttpURLConnection) url.openConnection();
httpURLConnection.setConnectTimeout(3000);
httpURLConnection.setRequestMethod("GET" );
int responseCode=httpURLConnection .getResponseCode();
if(responseCode ==200){
inputStream=httpURLConnection .getInputStream();
}
}
} catch(Exception e ){
e.printStackTrace();
}
return inputStream ;
}