【DM版本】:V8.1
【操作系统】：liunx
【CPU】:8
【问题描述】*：通过数据源jdbc连接达梦数据库，执行查询语句返回异常，加了序列化也不生效，返回报错：报错如下org.springframework.http.converter.HttpMessageConversionException: Type definition error: [simple type, class dm.jdbc.util.Buffer];
nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: No serializer found for class dm.jdbc.util.Buffer and no properties discovered to create BeanSerializer
(to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) (through reference chain: com.demo.common.result.ResultMap["data"]->java.util.ArrayList[0]->java.util.HashMap["COL10"]->
com.alibaba.druid.proxy.jdbc.NClobProxyImpl["rawNClob"]->dm.jdbc.driver.DmdbNClob["K"]->dm.jdbc.driver.DmdbConnection["gX"]->dm.jdbc.c.a["li"])
at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.writeInternal(AbstractJackson2HttpMessageConverter.java:353)