2、mapper.xml将jdbcType写错为javaType
<resultMap id="BaseResultMap" type="com.dong.springcloud.entities.Payment">
<id column="id" property="id" ></id>
<id column="serial" property="serial" javaType="VARCHAR"/>
</resultMap>
报错:Could not resolve type alias 'VARCHAR'. Cause: java.lang.ClassNotFoundException: Cannot find class: VARCHAR
javaType中没有VARCHAR,只有数据库里面才有
因为那里写错了,会导致所有的注解不生效:
正确的写法:
<resultMap id="BaseResultMap" type="com.dong.springcloud.entities.Payment">
<id column="id" property="id" ></id>
<id column="serial" property="serial" jdbcType="VARCHAR"/>
</resultMap>