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U 解决 背景图为 png 设置指定转换类型为 jpg 导致的图片变色问题

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天爱有情
2022-05-09 12:08:57 +08:00
parent f51cd66a9b
commit 6394c64bf7
2 changed files with 9 additions and 6 deletions
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src/main/java/cloud/tianai/captcha/generator/AbstractImageCaptchaGenerator.java
+7 -3
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@@ -10,6 +10,7 @@ import lombok.Setter;
import lombok.SneakyThrows; import lombok.SneakyThrows;
import lombok.extern.slf4j.Slf4j; import lombok.extern.slf4j.Slf4j;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage; import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream; import java.io.ByteArrayOutputStream;
import java.io.InputStream; import java.io.InputStream;
@@ -66,9 +67,12 @@ public abstract class AbstractImageCaptchaGenerator implements ImageCaptchaGener
return result; return result;
} }
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
long currentTimeMillis = System.currentTimeMillis(); if (CaptchaImageUtils.isPng(formatType) || CaptchaImageUtils.isJpeg(formatType)) {
ImgWriter.write(bufferedImage, formatType, byteArrayOutputStream, -1); // 如果是 jpg 或者 png图片的话 用hutool的生成
System.out.println("耗时:" + (System.currentTimeMillis() - currentTimeMillis)); ImgWriter.write(bufferedImage, formatType, byteArrayOutputStream, -1);
}else {
ImageIO.write(bufferedImage, formatType, byteArrayOutputStream);
}
//转换成字节码 //转换成字节码
byte[] data = byteArrayOutputStream.toByteArray(); byte[] data = byteArrayOutputStream.toByteArray();
String base64 = Base64.getEncoder().encodeToString(data); String base64 = Base64.getEncoder().encodeToString(data);
src/main/java/cloud/tianai/captcha/generator/common/util/CaptchaImageUtils.java
+2 -3
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@@ -8,9 +8,7 @@ import java.awt.*;
import java.awt.geom.Area; import java.awt.geom.Area;
import java.awt.geom.CubicCurve2D; import java.awt.geom.CubicCurve2D;
import java.awt.geom.QuadCurve2D; import java.awt.geom.QuadCurve2D;
import java.awt.image.BufferedImage; import java.awt.image.*;
import java.awt.image.PixelGrabber;
import java.awt.image.RenderedImage;
import java.io.InputStream; import java.io.InputStream;
import java.net.URL; import java.net.URL;
import java.util.ArrayList; import java.util.ArrayList;
@@ -564,4 +562,5 @@ public class CaptchaImageUtils {
public static boolean isPng(String type) { public static boolean isPng(String type) {
return TYPE_PNG.equalsIgnoreCase(type); return TYPE_PNG.equalsIgnoreCase(type);
} }
} }