org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for com.qf.domain.Items.findAll
### Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for com.qf.domain.Items.findAll
Caused by: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for com.qf.domain.Items.findAll
修改意见：
由于com.qf.mapper下并没有实体类就不能用<package name = "com.qf.mapper">
