java - 设置响应 Http :InboundGateway StatusCode in Spring Integration Java DSL

Question

以下配置接受带有要创建的 User 实例的 JSON 请求正文的 HTTP POST，但如果我能让它返回 201 Created，我就很危险了。有什么想法吗？

@Bean
public IntegrationFlow flow(UserService userService) {
    return IntegrationFlows.from(
            Http.inboundGateway("/users")
            .requestMapping(r -> r.methods(HttpMethod.POST))
            .statusCodeFunction(f -> HttpStatus.CREATED)
            .requestPayloadType(User.class)
            .replyChannel(replyChannel())
            .requestChannel(inputChannel())
        )
        .handle((p, h) -> userService.create((User) p)).get();
}

我尝试在 HttpRequestHandlerEndpointSpec 上调用 statusCodeFunction，但我一定做错了。

Answer 1

答案是 statusCodeFunction 仅适用于入站适配器(即单向传入的适配器)。有点回避为什么我可以在网关上调用它的问题，但是哼哼......

在 IntegrationFlow 上使用 enrichHeaders 就成功了。

@Configuration
@EnableIntegration
@Profile("integration")
public class IntegrationConfiguration {
    @Autowired
    UserService userService;

    @Bean
    public DirectChannel inputChannel() {
        return new DirectChannel();
    }

    @Bean
    public DirectChannel replyChannel() {
        return new DirectChannel();
    }

    @Bean
    public HttpRequestHandlingMessagingGateway httpGate() {
        HttpRequestHandlingMessagingGateway gateway = new HttpRequestHandlingMessagingGateway(true);
        RequestMapping requestMapping = new RequestMapping();
        requestMapping.setMethods(HttpMethod.POST);
        requestMapping.setPathPatterns("/users");
        gateway.setRequestPayloadType(User.class);
        gateway.setRequestMapping(requestMapping);
        gateway.setRequestChannel(inputChannel());
        gateway.setReplyChannel(replyChannel());
        return gateway;
    }

    @Bean
    public IntegrationFlow flow(UserService userService) {
        return IntegrationFlows.from(httpGate()).handle((p, h) -> userService.create((User) p))
                .enrichHeaders(
                        c -> c.header(org.springframework.integration.http.HttpHeaders.STATUS_CODE, HttpStatus.CREATED))
                .get();
    }
}