12306（组件库bizs）

config

UserAutoConfiguration

@ConditionalOnWebApplication
public class UserAutoConfiguration {

    /**
     * 用户信息传递过滤器
     */
    @Bean
    public FilterRegistrationBean<UserTransmitFilter> globalUserTransmitFilter() {
        FilterRegistrationBean<UserTransmitFilter> registration = new FilterRegistrationBean<>();
        registration.setFilter(new UserTransmitFilter());
        registration.addUrlPatterns("/*");
        registration.setOrder(USER_TRANSMIT_FILTER_ORDER);
        return registration;
    }
}

core

UserContext

设置与获取当前线程的用户信息

public final class UserContext {

    private static final ThreadLocal<UserInfoDTO> USER_THREAD_LOCAL = new TransmittableThreadLocal<>();

    /**
     * 设置用户至上下文
     *
     * @param user 用户详情信息
     */
    public static void setUser(UserInfoDTO user) {
        USER_THREAD_LOCAL.set(user);
    }

    /**
     * 获取上下文中用户 ID
     *
     * @return 用户 ID
     */
    public static String getUserId() {
        UserInfoDTO userInfoDTO = USER_THREAD_LOCAL.get();
        return Optional.ofNullable(userInfoDTO).map(UserInfoDTO::getUserId).orElse(null);
    }

    /**
     * 获取上下文中用户名称
     *
     * @return 用户名称
     */
    public static String getUsername() {
        UserInfoDTO userInfoDTO = USER_THREAD_LOCAL.get();
        return Optional.ofNullable(userInfoDTO).map(UserInfoDTO::getUsername).orElse(n