fix JSONObject ClassCastException, for issue #2762

alibaba · Jul 29, 2024 · 46a5d69 · 46a5d69
1 parent 41d3a01
commit 46a5d69
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diff --git a/fastjson1-compatible/src/main/java/com/alibaba/fastjson/JSONObject.java b/fastjson1-compatible/src/main/java/com/alibaba/fastjson/JSONObject.java
@@ -127,6 +127,10 @@ public Object get(Object key) {
             val = map.get(key.toString());
         }
 
+        if (val instanceof com.alibaba.fastjson2.JSONObject) {
+            val = new com.alibaba.fastjson.JSONObject((com.alibaba.fastjson2.JSONObject) val);
+        }
+
         return val;
     }
 

diff --git a/fastjson1-compatible/src/test/java/com/alibaba/fastjson/v2issues/Issue2762.java b/fastjson1-compatible/src/test/java/com/alibaba/fastjson/v2issues/Issue2762.java
@@ -0,0 +1,14 @@
+package com.alibaba.fastjson.v2issues;
+
+import com.alibaba.fastjson.JSONObject;
+import org.json.JSONException;
+import org.junit.jupiter.api.Test;
+
+public class Issue2762 {
+    @Test
+    public void test() throws JSONException {
+        String jsonString = "{\"this0\":{\"$ref\":\"1\"}}";
+        JSONObject jsonObject = JSONObject.parseObject(jsonString, JSONObject.class);
+        JSONObject innerObject1 = (JSONObject) jsonObject.get("this0");
+    }
+}