mybatis使用xml实现发生的异常之一return null from a method with a primitive return type (int)
主要缘由:xml
一、接口的返回值错误blog
二、接口的xml错误 ( 主要是标签写错了)接口
在这里个人接口:date
发现这句并无错误，那我再看接口的xml:select
很明显的就发现了select这里错误，insert,update,delect这些返回值为int类型，是不用写返回值的；im
这里是标签写错了:db
修改后的代码:img
把resultType去掉:标签
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