优化生成缩略图

mp-quartz/src/main/java/com/qs/mp/quartz/task/CosTask.java

@@ -143,7 +143,7 @@ public class CosTask {
     if (pWidth > 500) {
       float scale = 500f / pWidth;
       if ("image/png".equals(contentType)) {
-        Thumbnails.of(outFilePath).scale(scale).outputQuality(0.8)
+        Thumbnails.of(outFilePath).scale(scale > 0.5 ? 0.5 : scale).outputQuality(0.8)
             .imageType(BufferedImage.TYPE_INT_ARGB).outputFormat("png")
             .toFile(outFilePath);
       } else {
@@ -151,7 +151,7 @@ public class CosTask {
       }
     }else {
       if ("image/png".equals(contentType)) {
-        Thumbnails.of(outFilePath).scale(0.7).outputQuality(0.8)
+        Thumbnails.of(outFilePath).scale(0.5).outputQuality(0.8)
             .imageType(BufferedImage.TYPE_INT_ARGB).outputFormat("png")
             .toFile(outFilePath);
       } else {