我要评论前言
在.net使用npoi插件进行批量导入时，获取excel中的图片数据，存到集合中。
使用步骤
1.定义类picturedata
代码如下：
public class picturedata
{
public byte[] data { get; set; }
}
2.数据集引用
using npoi.xssf.usermodel; using npoi.ss.usermodel; using npoi.xssf.usermodel.extensions;
npoi插件需要自己下载。
3.定义获取excel图片数据的方法getdtwithimg
/// <summary>
/// 获取excel中图片数据
/// </summary>
/// <param name="path">文件路径</param>
/// <returns>list</returns>
private list<picturedata> getdtwithimg(string path)
{
using (filestream file = new filestream(path, filemode.open, fileaccess.read))
{
iworkbook workbook = null;
isheet sheet = null;
workbook = workbookfactory.create(file);
sheet = workbook.getsheet("sheet1");
if (sheet == null)
{
sheet = workbook.getsheetat(0);
}
// 获取绘图对象
xssfdrawing drawing = (xssfdrawing)sheet.createdrawingpatriarch();
list<xssfpicture> picturesincolumna = new list<xssfpicture>();
list<xssfshape> shapes = drawing.getshapes();
foreach (xssfshape shape in shapes)
{
if (shape is xssfpicture)
{
xssfpicture picture = (xssfpicture)shape;
xssfclientanchor anchor = (xssfclientanchor)picture.getpreferredsize();
picturesincolumna.add(picture);
}
}
list<picturedata> picturedatalist = new list<picturedata>();
//将图片数据放到集合中
foreach (xssfpicture picture in picturesincolumna)
{
byte[] picturedata = picture.picturedata.data;
picturedata data = new picturedata
{
data = picturedata
};
picturedatalist.add(data);
}
return picturedatalist;
}
}
总结
通过该方法可以获取excel中的图片，将其转换成字节流存到集合中，方便后续对其进行操作。
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