修改印章透明度0.5

picc-common/src/main/java/com/jpsoft/picc/modules/common/utils/Watermark.java

@@ -47,7 +47,7 @@ public class Watermark extends PdfPageEventHelper {
             PdfReader reader = new PdfReader(inputPath);
             PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(outputPath));
             PdfGState gs1 = new PdfGState();
-            gs1.setFillOpacity(0.8f);
+            gs1.setFillOpacity(0.5f);
 
             Image image = Image.getInstance(imageUrl);