Cause: org.apache.ibatis.type.TypeException: Error setting null for parameter #1 with JdbcType INTEGER . Try setting a different JdbcType for this parameter or a different jdbcTypeForNull configuration property. Cause: java.sql.SQLException: Parameter in

Cause: org.apache.ibatis.type.TypeException: Error setting null for parameter #1 with JdbcType INTEGER . Try setting a different JdbcType for this parameter or a different jdbcTypeForNull configuration property. Cause: java.sql.SQLException: Parameter index out of range (1 > number of parameters, which is 0).

说是INTEGER这个类型不行吗？可是老师的为什么可以