fix bug for color

pcloud-common/src/main/java/com/pcloud/common/utils/PictureUtil.java

@@ -38,7 +38,9 @@ public class PictureUtil {
 
     public static Color getImagePixel(BufferedImage bi)  {
         if(bi.getWidth()*bi.getHeight()>10000) {
-            BufferedImage pic1 = new BufferedImage(60, 60, BufferedImage.TYPE_3BYTE_BGR);
+            BufferedImage pic1 = new BufferedImage(350, 350, BufferedImage.TYPE_3BYTE_BGR);
+            Graphics graphics = pic1.getGraphics();
+            graphics.drawImage(bi.getScaledInstance(350,350,Image.SCALE_SMOOTH),0,0,null);
             bi = pic1;
         }
         int width = bi.getWidth();
@@ -161,7 +163,7 @@ public class PictureUtil {
             }
              imagePixel = getImagePixel(bi);
         } catch (Exception e) {
-            imagePixel = Color.CYAN;
+            imagePixel = Color.gray;
           LOGGER.warn("生成图片失败，图片="+imgFile+","+e.getMessage(),e);
         }
         return imagePixel;