打包签名验签

src/main/java/com/sunyard/util/CertUtil.java

@@ -0,0 +1,9 @@
+package com.sunyard.util;
+
+import sun.misc.BASE64Encoder;
+
+public class CertUtil {
+    public static String encodeBase64(byte[] data){
+        return new BASE64Encoder().encode( data );
+    }
+}