Fixed - LiveObject field can't set to null value. #5847

redisson/src/main/java/org/redisson/liveobject/core/AccessorInterceptor.java

@@ -175,6 +175,14 @@ public class AccessorInterceptor {
                 } else {
                     liveMap.fastPut(fieldName, arg);
                 }
+            } else {
+                if (field.getAnnotation(RIndex.class) == null) {
+                    if (commandExecutor instanceof CommandBatchService) {
+                        liveMap.removeAsync(fieldName);
+                    } else {
+                        liveMap.remove(fieldName);
+                    }
+                }
             }
             return me;
         }

redisson/src/test/java/org/redisson/RedissonLiveObjectServiceTest.java

@@ -653,6 +653,19 @@ public class RedissonLiveObjectServiceTest extends RedisDockerTest {
         assertThat(objects6.iterator().next().getId()).isEqualTo("4");
     }
 
+    @Test
+    public void testNullValue() {
+        TestClass ti = new TestClass("3");
+        TestClass liveObject = redisson.getLiveObjectService().merge(ti);
+
+        liveObject.setCode("test");
+        liveObject.setCode(null);
+        assertThat(liveObject.getCode()).isNull();
+
+        liveObject.setCode("123");
+        assertThat(liveObject.getCode()).isEqualTo("123");
+    }
+
     @Test
     public void testFindGt() {
         RLiveObjectService s = redisson.getLiveObjectService();