NPOI2.2.0.0实例详解(十一)—向EXCEL插入图片

--------------------- 本文来自 天水宇 的CSDN 博客 ，全文地址请点击：https://blog.csdn.net/xxs77ch/article/details/50553857?utm_source=copy

• using System;
• using System.Collections.Generic;
• using System.Linq;
• using System.Text;
• using System.Threading.Tasks;
• using NPOI.HSSF.UserModel;
• using NPOI.SS.Formula.Eval;
• using NPOI.SS.Formula.Functions;
• using NPOI.SS.UserModel;
• using NPOI.XSSF.UserModel;
• using NPOI.POIFS.FileSystem;
• using NPOI.HPSF;
• using System.IO;
• using NPOI.SS.Util;
• using System.Drawing;
• using NPOI.HSSF.Util;
• using System.Web;
• using System.Net;
• using System.Net.Mail;
• namespace NPOI
• {
• class Program10
• {
• static void Main(string[] args)
• {
•  
• //说明：插入图片
•  
• //1.创建EXCEL中的Workbook
• IWorkbook myworkbook = new HSSFWorkbook();
•  
• //2.创建Workbook中的Sheet
• ISheet mysheet = myworkbook.CreateSheet("sheet1");
•  
• //第一步：读取图片到byte数组
• HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://img1.soufunimg.com/message/images/card/tuanproj/201511/2015112703584458_s.jpg");
•  
• byte[] bytes;
• using (Stream stream = request.GetResponse().GetResponseStream())
• {
• using (MemoryStream mstream = new MemoryStream())
• {
• int count = 0;
• byte[] buffer = new byte[1024];
• int readNum = 0;
• while ((readNum = stream.Read(buffer, 0, 1024)) > 0)
• {
• count = count + readNum;
• mstream.Write(buffer, 0, 1024);
• }
• mstream.Position = 0;
• using (BinaryReader br = new BinaryReader(mstream))
• {
•  
• bytes = br.ReadBytes(count);
• }
• }
• }
•  
• //第二步：将图片添加到workbook中 指定图片格式 返回图片所在workbook->Picture数组中的索引地址（从1开始）
• int pictureIdx = myworkbook.AddPicture(bytes, PictureType.JPEG);
•  
• //第三步：在sheet中创建画部
• IDrawing patriarch = mysheet.CreateDrawingPatriarch();
•  
• //第四步：设置锚点 （在起始单元格的X坐标0-1023，Y的坐标0-255，在终止单元格的X坐标0-1023，Y的坐标0-255，起始单元格行数，列数，终止单元格行数，列数）
• IClientAnchor anchor =patriarch.CreateAnchor(0,0,0,0,0,0,2,2);
•  
•  
• //第五步：创建图片
• IPicture pict = patriarch.CreatePicture(anchor, pictureIdx);
•  
• //6.保存
• FileStream file = new FileStream(@"E:\myworkbook11.xls", FileMode.Create);
• myworkbook.Write(file);
• file.Close();
• }
• }
• }

   

   

   

   

   

   1 // 插入 PNG 图片至 Excel
   2 String fileName = strAppRootPath + "images/" + "bxlogo.png";
   3 
   4 InputStream is = new FileInputStream(fileName);
   5 byte[] bytes = IOUtils.toByteArray(is);
   6 
   7 int pictureIdx = workbook.addPicture(bytes, Workbook.PICTURE_TYPE_PNG);
   8 
   9 CreationHelper helper = workbook.getCreationHelper();
  10 Drawing drawing = sheet.createDrawingPatriarch();
  11 ClientAnchor anchor = helper.createClientAnchor();
  12 
  13 // 图片插入坐标
  14 anchor.setCol1(0);
  15 anchor.setRow1(1);
  16 // 插入图片
  17 Picture pict = drawing.createPicture(anchor, pictureIdx);
  18 pict.resize();