code: public static <T> T newInstance(final Class<T> clazz, final Class<?> fieldType,
              final Object value) {
  
          return ClassUtils.instantiateClass(clazz, getParameterTypes(fieldType),
                  getParameterValues(value));
      }
docs: 根据给定实例化参数类型和数据实例化指定类型的对象。 Returns a newly allocated instance of the class
  represented by this class use given constructor parameters class type and
  constructor parameters value.
  
  @param clazz
  想要实例化的类型。want to create instance class.
  @param fieldType
  构造函数的唯一参数类型。constructor single parameter class type.
  @param value
  构造函数的唯一参数数据。constructor single parameter value.
  @return 实例化对象。a newly allocated instance of the class represented by this
  class.