@ResponseBody处理Clob数据

create table test
(
  TASKID        NUMBER(10) not null,
  CONFIG CLOB
)

	@ResponseBody
	@RequestMapping("/getTest")
	public List getTest(HttpServletRequest request, HttpServletResponse response){
		return this.Service.getTest();
	}

<select id="gettest"
		resultMap="hashmap">
		select t.config as config,
		       t.taskid
		from test t
	</select>

Caused by:
org.codehaus.jackson.map.JsonMappingException: No serializer found for class
oracle.sql.LobDBAccessImpl and no properties discovered to create
BeanSerializer (to avoid exception, disable
SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS) ) (through reference chain:
java.util.ArrayList[0]->java.util.HashMap["CONFIG"]->oracle.sql.CLOB["dbaccess"])

<select id="gettest"
		resultMap="hashmap">
		select to_char(t.config) as config,
		       t.taskid
		from test t
	</select>

        //@ResponseBody
	@RequestMapping("/getTest")
	public List getTest(HttpServletRequest request, HttpServletResponse response){
	        System.out.println(this.Service.getTest());
		return this.Service.getTest();
	}

[{CONFIG=oracle.sql.CLOB@16e2b70,TASKID=38}]

	<select id="gettest"
		resultMap="testMap">
		select t.config as config,
		       t.taskid
		from test t
	</select>
	
	<resultMap type="hashmap" id="testMap">
		<result property="CONFIG" column="config" javaType="String" jdbcType="CLOB"/>
		<result property="TASKID" column="taskid"/>
	</resultMap>