通过自定义 @CurrentUser 获取当前登录用户

@CurrentUser

要用这个注释，总共分为三步

  1:第一

@Target(ElementType.PARAMETER)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface CurrentUser {
}

  2:第二：增加参数解析器

　　

public class CurrentUserMethodArgumentResolver  implements HandlerMethodArgumentResolver {

    @Override
    public boolean supportsParameter(MethodParameter parameter) {
        return parameter.getParameterType().isAssignableFrom(UserInfo.class)
                && parameter.hasParameterAnnotation(CurrentUser.class);
    }
    @Override
    public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer, NativeWebRequest webRequest, WebDataBinderFactory binderFactory) throws Exception {
        UserInfo userInfo = (UserInfo) webRequest.getAttribute("currentUser", RequestAttributes.SCOPE_REQUEST);
        if (userInfo != null) {
            return userInfo;
        }
        throw new MissingServletRequestPartException("currentUser");
    }
}

  3:第三:配置参数解析器

@Override
public void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers) {
    argumentResolvers.add(currentUserMethodArgumentResolver());
    super.addArgumentResolvers(argumentResolvers);
}
@Bean
public CurrentUserMethodArgumentResolver currentUserMethodArgumentResolver() {
    return new CurrentUserMethodArgumentResolver();
}
以上配置可以copy。。。