fix Lambada BiFunction error

Author: wenshao

core/src/main/java/com/alibaba/fastjson2/support/LambdaMiscCodec.java

@@ -529,7 +529,7 @@ public static BiFunction createBiFunction(Method method) {
                         method.getName(),
                         MethodType.methodType(objectClass, param0)
                 );
-                methodType = MethodType.methodType(objectClass, declaringClass, param0);
+                methodType = MethodType.methodType(objectClass, declaringClass, box(param0));
             }
 
             CallSite callSite = LambdaMetafactory.metafactory(
@@ -567,7 +567,7 @@ public static BiFunction createBiFunction(Constructor constructor) {
                     METHOD_TYPE_BI_FUNCTION,
                     METHOD_TYPE_OBJECT_OBJECT_OBJECT,
                     methodHandle,
-                    MethodType.methodType(declaringClass, param0, param1)
+                    MethodType.methodType(declaringClass, box(param0), box(param1))
             );
             return (BiFunction) callSite.getTarget().invokeExact();
         } catch (Throwable ignored) {
@@ -577,6 +577,34 @@ public static BiFunction createBiFunction(Constructor constructor) {
         return new ConstructorBiFunction(constructor);
     }
 
+    static Class<?> box(Class cls) {
+        if (cls == int.class) {
+            return Integer.class;
+        }
+        if (cls == long.class) {
+            return Long.class;
+        }
+        if (cls == boolean.class) {
+            return Boolean.class;
+        }
+        if (cls == short.class) {
+            return Short.class;
+        }
+        if (cls == byte.class) {
+            return Byte.class;
+        }
+        if (cls == char.class) {
+            return Character.class;
+        }
+        if (cls == float.class) {
+            return Float.class;
+        }
+        if (cls == double.class) {
+            return Double.class;
+        }
+        return cls;
+    }
+
     static final class ConstructorSupplier
             implements Supplier {
         final Constructor constructor;

test-jdk17/src/test/java/com/alibaba/fastjson2/RecordTest.java

@@ -63,4 +63,21 @@ public record User(boolean default_profile, String screen_name) {
 
     public record Item3(User user) implements Serializable {
     }
+
+    @Test
+    public void test4() {
+        Item4 item = new Item4(123);
+        String str = JSON.toJSONString(item);
+        String str1 = JSON.toJSONString(item, JSONWriter.Feature.FieldBased);
+        assertEquals(str, str1);
+
+        JSONObject object = JSON.parseObject(str);
+        assertEquals(item.value, object.get("value"));
+
+        Item4 item2 = JSON.parseObject(str, Item4.class);
+        assertEquals(item.value, item2.value);
+    }
+
+    private record Item4(int value) {
+    }
 }