U 添加 背景图为 png 设置指定转换类型为 jpg 导致的图片变色警告日志

src/main/test/java/example/DemoTest.java

@@ -0,0 +1,15 @@
+package example;
+
+import cloud.tianai.captcha.generator.common.util.CaptchaImageUtils;
+
+import java.awt.image.BufferedImage;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+
+public class DemoTest {
+
+    public static void main(String[] args) throws FileNotFoundException {
+        BufferedImage bufferedImage = CaptchaImageUtils.wrapFile2BufferedImage(new FileInputStream("E:\\projects\\tianai-captcha\\src\\main\\resources\\META-INF\\cut-image\\resource\\1.jpg"));
+        System.out.println(bufferedImage.getType());
+    }
+}