feat: fix org.bson.types.Decimal128 to Double, for issue alibaba#2558

ocean23 · May 11, 2024 · 1f3112e · 1f3112e
1 parent 45cc6b3
commit 1f3112e
Showing 1 changed file with 17 additions and 0 deletions.
diff --git a/core/src/main/java/com/alibaba/fastjson2/util/TypeUtils.java b/core/src/main/java/com/alibaba/fastjson2/util/TypeUtils.java
@@ -1522,6 +1522,23 @@ public static <T> T cast(Object obj, Class<T> targetClass, ObjectReaderProvider
                     break;
             }
         }
+        // fix org.bson.types.Decimal128 to Double
+        String objClassName = obj.getClass().getName();
+        if (objClassName.equals("org.bson.types.Decimal128") && targetClass == Double.class) {
+            ObjectWriter objectWriter = JSONFactory
+                    .getDefaultObjectWriterProvider()
+                    .getObjectWriter(obj.getClass());
+            if (objectWriter instanceof ObjectWriterPrimitiveImpl) {
+                Function function = ((ObjectWriterPrimitiveImpl<?>) objectWriter).getFunction();
+                if (function != null) {
+                    Object apply = function.apply(obj);
+                    Function DecimalTypeConvert = provider.getTypeConvert(apply.getClass(), targetClass);
+                    if (DecimalTypeConvert != null) {
+                        return (T) DecimalTypeConvert.apply(obj);
+                    }
+                }
+            }
+        }
 
         ObjectWriter objectWriter = JSONFactory
                 .getDefaultObjectWriterProvider()