mybatis 插入的时候一句sql报错如下。
org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.builder.BuilderException: Error resolving JdbcType. Cause: java.lang.IllegalArgumentException: No enum constant org.apache.ibatis.type.JdbcType."VARCHAR"
insert into sys_user( <if test="userId != null and userId != ‘‘ ">user_id,</if> create_time )values( <if test="userId != null and userId != ‘‘">#{userId,jdbcType="VARCHAR"},</if> sysdate )
原因在于
#{userId,jdbcType="VARCHAR"},
即mybatis所定义的类型常量枚举不存在，mybatis 解析为了"VARCHAR" 带双引号的字符串，改为
insert into sys_user( <if test="userId != null and userId != ‘‘ ">user_id,</if> create_time )values( <if test="userId != null and userId != ‘‘">#{userId,jdbcType=VARCHAR},</if> sysdate )
把双引号去掉或者直接不写jdbcType 即可。
mybatis: No enum constant org.apache.ibatis.type.JdbcType."VARCHAR"
原文：https://www.cnblogs.com/shuiliuhualuo/p/13623435.html