Spring integration 如何更改代码以使http://uri 动态的还是参数化的？

我有一个用于post消息的spring集成流：

@Bean
public IntegrationFlow httpPost() {
   return IntegrationFlows
        .from("requestChannel")
        .handle(Http.outboundGateway("http://uri")
        .httpMethod(HttpMethod.POST)
        .extractPayload(true))
        .get();
}

如何更改代码以使动态化或参数化

/**
 * Create an {@link HttpMessageHandlerSpec} builder for request-reply gateway
 * based on provided {@code Function} to evaluate target {@code uri} against request message.
 * @param uriFunction the {@code Function} to evaluate {@code uri} at runtime.
 * @param <P> the expected payload type.
 * @return the HttpMessageHandlerSpec instance
 */
public static <P> HttpMessageHandlerSpec outboundGateway(Function<Message<P>, ?> uriFunction) {
    return outboundGateway(new FunctionExpression<>(uriFunction));
}

或者，您可以使用SpEL表达式。

Good；看，这会帮助别人。

.handle(Http.outboundGateway(message -> message.getHeaders().get("someHeaderWithURI"))