通过mybatis 往数据库存date类型数据报错处理

Caused by: org.apache.ibatis.exceptions.PersistenceException:
### Error updating database. Cause: java.lang.IllegalArgumentException: invalid comparison: java.util.Date and java.lang.String
### Cause: java.lang.IllegalArgumentException: invalid comparison: java.util.Date and java.lang.String

mabatis 中代码  

<if test="establishmentTime != null  and establishmentTime != '' ">#{establishmentTime},</if>
出错原因：  mybatis中时间判断不能判断是否为空串 
处理方法  删除  and establishmentTime != ''

<if test="establishmentTime != null  ">establishment_time,</if>
就可以成功的存入了