加jwt包

mhotel/src/com/happy/common/JwtUtil.java

@@ -101,7 +101,7 @@ public class JwtUtil {
                     .withClaim("pwd",pwd)
                     .withExpiresAt(date)
                     .sign(algorithm);
-        } catch (UnsupportedEncodingException e) {
+        } catch (Exception e) {
             return null;
         }