java正确开发系列：mybatis为何提示@MapKey is required

在mapper接口的方法定义为List<Map<String,Object>>类型时，会出现@MapKey is required的提示，意思是要在该方法的签名前加上@MapKey注解，指定Map的key

 

参考资料：

https://blog.csdn.net/m0_59846266/article/details/128525083

https://blog.csdn.net/dxyzhbb/article/details/107958528

https://blog.csdn.net/jx520/article/details/87452574