Question

我做了以下守则:

public static <T> T mergeObjects(T draft, T existing)
      throws IllegalAccessException, InstantiationException, NoSuchMethodException,
          InvocationTargetException {
    Class<?> clazz = draft.getClass();
    Field[] fields = clazz.getDeclaredFields();
    Object returnValue = clazz.getDeclaredConstructor().newInstance();
    for (Field field : fields) {
      field.setAccessible(true);
      Object draftValue = field.get(draft);
      Object existingValue = field.get(existing);
      if (Objects.equals(existingValue, draftValue)) field.set(returnValue, existingValue);
      else field.set(returnValue, draftValue);
    }
    return (T) returnValue;
  }

但是,它给定点的幼 the问题。

field.setAccessible(true);
if (Objects.equals(existingValue, draftValue)) field.set(returnValue, existingValue);
else field.set(returnValue, draftValue);

I have tried many things but not working. Can anyone know hoe to resolve it, please tell me.

Answer 1

If you just want to remove the lint issue, you can use org.springframework.util.ReflectionUtils.makeAccessible(field); and ReflectionUtils.setField(field,target,value)
example code:

ReflectionUtils.makeAccessible(field);//no sonar lint issue

Warning:this solution didn t solve any potential issue, because the code in makeAccessible also use the field.setAccessible(true); with some check if statement, just use a static util method to get around the sonar check. If you care about the potential issue, pls check the "useful link" in below.
ReflectionUtils.makeAccessible code:

    public static void makeAccessible(Field field) {
        if ((!Modifier.isPublic(field.getModifiers()) || !Modifier.isPublic(field.getDeclaringClass().getModifiers()) || Modifier.isFinal(field.getModifiers())) && !field.isAccessible()) {
            field.setAccessible(true);
        }
    }

useful link:

友情链接