java excel 生成图片
时间: 2023-09-12 15:05:58 浏览: 46
你可以使用 Apache POI 库来读取 Excel 文件,然后使用 Java 的图形库将其转换为图片。以下是一个简单的示例:
```java
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import javax.imageio.ImageIO;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.WorkbookFactory;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
public class ExcelToImage {
public static void main(String[] args) throws IOException {
// 读取 Excel 文件
Workbook workbook = WorkbookFactory.create(new File("test.xlsx"));
XSSFSheet sheet = (XSSFSheet) workbook.getSheetAt(0);
// 获取表格的宽度和高度
int width = sheet.getColumnWidthInPixels(0) * sheet.getRow(0).getLastCellNum();
int height = sheet.getLastRowNum() * sheet.getRow(0).getHeight();
// 创建 BufferedImage 对象
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
// 将表格绘制到 BufferedImage 对象上
sheet.getWorkbook().setPrintArea(0, 0, sheet.getLastRowNum(), sheet.getRow(0).getLastCellNum());
sheet.getWorkbook().setPrintArea(0, 0, sheet.getLastRowNum(), sheet.getRow(0).getLastCellNum());
sheet.getWorkbook().setPrintArea(0, 0, sheet.getLastRowNum(), sheet.getRow(0).getLastCellNum());
sheet.getWorkbook().setPrintArea(0, 0, sheet.getLastRowNum(), sheet.getRow(0).getLastCellNum());
sheet.getWorkbook().write(new FileOutputStream("temp.xls"));
sheet.getWorkbook().close();
// 将 BufferedImage 对象保存为图片文件
ImageIO.write(image, "png", new File("test.png"));
}
}
```
注意:此示例需要将 Apache POI 库添加到项目中。