报错：org.apache.ibatis.executor.ExecutorException: No constructor found in com.mental.bean.Appointment

报错内容：

org.apache.ibatis.executor.ExecutorException: No constructor found in 
com.mental.bean.Appointment matching 
[java.lang.Integer, java.lang.String, java.lang.String, java.lang.String, java.sql.Timestamp, java.lang.String]

解决：

添加一个无参构造器。（以后注意无参构造器的添加）