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通过实现参数解析器HandlerMethodArgumentResolver接口来自定义注解
2022-04-23 07:16:00 【hungry＆foolish】
HandlerMethodArgumentResolver类似于拦截器，是一个参数解析器，我们可以通过写一个类实现HandlerMethodArgumentResolver接口来实现对Controller层中方法参数的修改
自定义解析器需要实现HandlerMethodArgumentResolver接口，HandlerMethodArgumentResolver接口包含两个接口函数:
当supportsParameter返回True时，才会调用resolveArgument。
实例：
声明自定义的注解（用于获取用户的userid）
写一个LoginUserHandlerMethodArgumentResolver类实现HandlerMethodArgumentResolver接口
在resolveArgument中会获取token，然后根据token获取userid并返回
版权声明
本文为[hungry＆foolish]所创，转载请带上原文链接，感谢
https://blog.csdn.net/qq_35227352/article/details/124302257
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