MultipartFile转ImageInfo
时间: 2023-05-23 13:06:45 浏览: 84
A:
要将MultipartFile对象转换为ImageInfo对象,需要执行以下步骤:
1. 从MultipartFile中获取字节数组
```java
byte[] bytes = multipartFile.getBytes();
```
2. 通过字节数组创建一个BufferedImage对象
```java
ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
BufferedImage bImage = ImageIO.read(bis);
```
3. 使用BufferedImage对象创建ImageInfo对象
```java
ImageInfo imageInfo = new ImageInfo(bImage.getWidth(), bImage.getHeight(), imageType, bytes);
```
其中,imageType需要根据BufferedImage的类型进行设置。可以使用以下代码获取BufferedImage的类型:
```java
int imageType = bImage.getType() == 0 ? BufferedImage.TYPE_INT_ARGB : bImage.getType();
```
完整的代码如下:
```java
import org.springframework.web.multipart.MultipartFile;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.IOException;
public class ImageUtils {
public static ImageInfo convertToImageInfo(MultipartFile multipartFile) throws IOException {
byte[] bytes = multipartFile.getBytes();
ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
BufferedImage bImage = ImageIO.read(bis);
int imageType = bImage.getType() == 0 ? BufferedImage.TYPE_INT_ARGB : bImage.getType();
ImageInfo imageInfo = new ImageInfo(bImage.getWidth(), bImage.getHeight(), imageType, bytes);
return imageInfo;
}
}
```
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