juick-core: fix NPE in xml date marshalling

1 files changed, 3 insertions, 0 deletions

diff --git a/juick-core/src/main/java/com/juick/xml/adapters/SimpleDateAdapter.java b/juick-core/src/main/java/com/juick/xml/adapters/SimpleDateAdapter.java
index 9cb56909..264f8c22 100644
--- a/juick-core/src/main/java/com/juick/xml/adapters/SimpleDateAdapter.java
+++ b/juick-core/src/main/java/com/juick/xml/adapters/SimpleDateAdapter.java
@@ -20,6 +20,9 @@ public class SimpleDateAdapter extends XmlAdapter<String, Date> {
 
     @Override
     public String marshal(Date v) throws Exception {
+        if (v == null) {
+            return "";
+        }
         synchronized (dateFormat) {
             return dateFormat.format(v);
         }