HTTP Status 500 - Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: Error instantiating class com.het.pojo.Items with invalid types () or values (). Cause: java.lang.NoSuchMethodException: com.het.pojo.Items.()
解决:构造函数被重载过,但是没有空的构造函数。