code: public static Class[] resolveTypeParameters(Class invocationClass, Type targetType) {
          if (targetType instanceof ParameterizedType) {
  
              Type[] actualTypes = ((ParameterizedType) targetType).getActualTypeArguments();
              Class[] actualClasses = new Class[actualTypes.length];
              for (int i = 0; i < actualTypes.length; i++) {
                  actualClasses[i] = resolveTypeVariable(invocationClass, actualTypes[i]);
              }
              return actualClasses;
          }
  
          return EMPTY_CLASSES;
      }
docs: 返回类型List<E>、Map<K,V>中的E、K、V
  
  @param method
  @param daoMetaData