png图片保存成JPG格式会变红的问题。

jfwUtil/src/main/java/org/jfw/util/JpgUtil.java

@@ -1,5 +1,6 @@
package org.jfw.util;
import java.awt.Color;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.geom.AffineTransform;
@@ -23,8 +24,10 @@ public final class JpgUtil {
	
	public static byte[] read(byte[] src) throws IOException{
		 BufferedImage im = ImageIO.read(new ByteArrayInputStream(src));
		 BufferedImage newBufferedImage = new BufferedImage(im.getWidth(),im.getHeight(), BufferedImage.TYPE_INT_RGB);
		 newBufferedImage.createGraphics().drawImage(im, 0, 0, Color.WHITE, null);
		 ByteArrayOutputStream os = new ByteArrayOutputStream();
		 ImageIO.write(im, JPG, os);
		 ImageIO.write(newBufferedImage, JPG, os);
		 return os.toByteArray();
	}