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-rw-r--r--src/org/traccar/web/JsonConverter.java12
1 files changed, 9 insertions, 3 deletions
diff --git a/src/org/traccar/web/JsonConverter.java b/src/org/traccar/web/JsonConverter.java
index f9682f90d..19ac6f777 100644
--- a/src/org/traccar/web/JsonConverter.java
+++ b/src/org/traccar/web/JsonConverter.java
@@ -1,5 +1,5 @@
/*
- * Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
+ * Copyright 2015 - 2016 Anton Tananaev (anton.tananaev@gmail.com)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -129,9 +129,15 @@ public final class JsonConverter {
json.add(name, DATE_FORMAT.print(new DateTime(value)));
}
} else if (method.getReturnType().equals(Map.class)) {
- json.add(name, MiscFormatter.toJson((Map) method.invoke(object)));
+ Map value = (Map) method.invoke(object);
+ if (value != null) {
+ json.add(name, MiscFormatter.toJson(value));
+ }
} else if (method.getReturnType().equals(List.class)) {
- json.add(name, arrayToJson((List) method.invoke(object)));
+ List value = (List) method.invoke(object);
+ if (value != null) {
+ json.add(name, arrayToJson(value));
+ }
}
} catch (IllegalAccessException | InvocationTargetException error) {
Log.warning(error);