我正在使用Apache POI。我可以从Excel中读取数据,但无法从Excel中读取图像。如何从Excel读取图像。
最佳答案
与其费解,不如让我们看一个完整的例子。
import org.apache.poi.ss.usermodel.WorkbookFactory;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.PictureData;
import java.io.InputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.List;
import java.util.Iterator;
class ReadExcelImages {
public static void main(String[] args) throws Exception{
InputStream inp = new FileInputStream("test.xls");
//InputStream inp = new FileInputStream("test.xlsx");
Workbook workbook = WorkbookFactory.create(inp);
List lst = workbook.getAllPictures();
int i = 1;
for (Iterator it = lst.iterator(); it.hasNext(); ) {
PictureData pict = (PictureData)it.next();
String ext = pict.suggestFileExtension();
byte[] data = pict.getData();
if (ext.equals("png")){
FileOutputStream out = new FileOutputStream("pict" + i++ + ".png");
out.write(data);
out.close();
} else if (ext.equals("jpeg")) {
FileOutputStream out = new FileOutputStream("pict" + i++ + ".jpeg");
out.write(data);
out.close();
}
}
}
}
适用于 HSSF
(*.xls
) 以及 XSSF
(*.xlsx
) )。
关于java - 使用java从excel中获取图像,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/41086729/