Spring Integration HTTP Outbound Gateway Post Request with J

Question

我正在尝试使用休息服务并接收一个 json 并将其转换为对象列表。 但我收到以下消息。我是EIP的新手，在java dsl中没有很多教程可以做到这一点。我已经配置了 2 个通道，一个用于发送请求，一个用于接收有效负载。

Exception in thread "main" org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'httpPostAtms' is expected to be of type 'org.springframework.messaging.MessageChannel' but was actually of type 'org.springframework.integration.dsl.StandardIntegrationFlow'
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:378)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.integration.support.channel.BeanFactoryChannelResolver.resolveDestination(BeanFactoryChannelResolver.java:89)
at org.springframework.integration.support.channel.BeanFactoryChannelResolver.resolveDestination(BeanFactoryChannelResolver.java:46)
at org.springframework.integration.gateway.MessagingGatewaySupport.getRequestChannel(MessagingGatewaySupport.java:344)
at org.springframework.integration.gateway.MessagingGatewaySupport.doSendAndReceive(MessagingGatewaySupport.java:433)
at org.springframework.integration.gateway.MessagingGatewaySupport.sendAndReceive(MessagingGatewaySupport.java:422)
at org.springframework.integration.gateway.GatewayProxyFactoryBean.invokeGatewayMethod(GatewayProxyFactoryBean.java:474)
at org.springframework.integration.gateway.GatewayProxyFactoryBean.doInvoke(GatewayProxyFactoryBean.java:429)
at org.springframework.integration.gateway.GatewayProxyFactoryBean.invoke(GatewayProxyFactoryBean.java:420)
at org.springframework.integration.gateway.GatewayCompletableFutureProxyFactoryBean.invoke(GatewayCompletableFutureProxyFactoryBean.java:65)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
at com.sun.proxy.$Proxy70.getAllAtms(Unknown Source)
at com.backbase.atm.IngAtmApplication.main(IngAtmApplication.java:25)

我正在使用带有弹簧启动的 SI

@IntegrationComponentScan
@Configuration
@EnableIntegration
@ComponentScan
public class InfrastructorConfig {
@Bean
public PollableChannel requestChannel() {
return new PriorityChannel() ;
}
@Bean
public MessageChannel replyChannel() {
return new DirectChannel() ;
}
@Bean(name = PollerMetadata.DEFAULT_POLLER)
public PollerMetadata poller() {
return Pollers.fixedRate(500).get();
}
@Bean
public IntegrationFlow httpPostAtms() {
return IntegrationFlows.from("requestChannel")
.handle(Http.outboundGateway("https://www.ing.nl/api/locator/atms/")
.httpMethod(HttpMethod.POST)
.extractPayload(true))
.<String, String>transform(p -> p.substring(5))
.transform(Transformers.fromJson(Atm[].class))
.channel("responseChannel")
.get();
}
}

网关

package com.backbase.atm.service;
import java.util.List;
import org.springframework.integration.annotation.Gateway;
import org.springframework.integration.annotation.MessagingGateway;
import org.springframework.messaging.handler.annotation.Payload;
import com.backbase.atm.model.Atm;
@MessagingGateway
public interface IntegrationService {
@Gateway(requestChannel = "httpPostAtms")
@Payload("new java.util.Date()")
List<Atm> getAllAtms();
}

应用程序启动

package com.backbase.atm;
import java.util.ArrayList;
import java.util.List;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.Bean;
import com.backbase.atm.service.IntegrationService;

@SpringBootApplication
public class IngAtmApplication {

public static void main(String[] args) {
ConfigurableApplicationContext ctx = SpringApplication.run(IngAtmApplication.class, args);
ctx.getBean(IntegrationService.class).getAllAtms();
ctx.close();
}

Answer 1

您必须在网关定义中使用requestChannelBean 名称。现在你有一个IntegrationFlow豆的名字，但这是错误的。

永远记住，Spring Integration中的所有内容都是通过通道连接的。