在换成Mybatis之前程序能正常运行，换了之后一直报错，

<!DOCTYPE mapper
       PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
       "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="Message">

   <resultMap type="com.imooc.bean.Message" id="MessageResult">
       <id column="id" jdbcType="INTEGER" property="id"/>
       <result column="command" jdbcType="VARCHAR" property="command"/>
       <result column="description" jdbcType="VARCHAR" property="description.encrypted"/>
       <result column="content" jdbcType="VARCHAR" property="content"/>
   </resultMap>

   <select id="queryMessageList"  resultMap="MessageResult">
       SELECT
           id,
           command,
           description,
           content
       FROM message
       WHERE 1 = 1
   </select>
</mapper>

### The error may involve Message.queryMessageList
### The error occurred while handling results
### SQL: SELECT             id,             command,             description,             content         FROM message         WHERE 1 = 1
### Cause: org.apache.ibatis.reflection.ReflectionException: Could not set property 'encrypted' of 'class java.lang.String' with value '精彩内容' Cause: org.apache.ibatis.reflection.ReflectionException: There is no setter for property named 'encrypted' in 'class java.lang.String'