SaveSession GatewayFilter Factory

SaveSession GatewayFilter 工厂强制执行 WebSession::save 操作 before，将调用转发到下游。在将延迟数据存储与类似 Spring Session 的功能结合使用时，此功能特别有用，并且你需要确保已保存会话状态然后再进行转发的调用。以下示例配置了一个 SaveSession GatewayFilter：

The SaveSession GatewayFilter factory forces a WebSession::save operation before forwarding the call downstream. This is of particular use when using something like Spring Session with a lazy data store, and you need to ensure the session state has been saved before making the forwarded call. The following example configures a SaveSession GatewayFilter:

application.yml
spring:
  cloud:
    gateway:
      routes:
      - id: save_session
        uri: https://example.org
        predicates:
        - Path=/foo/**
        filters:
        - SaveSession

如果你将 Spring Security 与 Spring Session 集成并希望确保安全详细信息已转发到远程进程，这一点至关重要。

If you integrate Spring Security with Spring Session and want to ensure security details have been forwarded to the remote process, this is critical.