bug fixed for JSONObject ordered.

75c2d33d · wenshao · d494ad22 · 75c2d33d
Commit 75c2d33d authored 7 years ago by wenshao
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--- a/src/main/java/com/alibaba/fastjson/serializer/MapSerializer.java
+++ b/src/main/java/com/alibaba/fastjson/serializer/MapSerializer.java
@@ -45,6 +45,9 @@ public final class MapSerializer implements ObjectSerializer {
                && map.containsKey(JSON.DEFAULT_TYPE_KEY);

        if ((out.features & SerializerFeature.SortField.mask) != 0) {
+            if (map instanceof JSONObject) {
+                map = ((JSONObject) map).getInnerMap();
+            }
            if ((!(map instanceof SortedMap)) && !(map instanceof LinkedHashMap)) {
                try {
                    map = new TreeMap(map);