Spring IntegrationFlow Http.inboundGateway模糊参数类型

Question

我尝试将以下spring集成示例转换为Java Config版本。 https://github.com/dsyer/http-amqp-tunnel

我们需要稍微修改此项目的版本才能在生产环境中工作。我的问题是，在启动应用程序时，我一直收到以下异常。

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'httpInboundGateway' defined in org.springframework.platform.proxy.TunnelApplication: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.integration.dsl.IntegrationFlow]: Factory method 'httpInboundGateway' threw exception; nested exception is java.lang.IllegalArgumentException: Found ambiguous parameter type [class [Ljava.lang.String;] for method match: [public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.multipartResolver(org.springframework.web.multipart.MultipartResolver), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.replyMapper(org.springframework.integration.mapping.OutboundMessageMapper), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.autoStartup(boolean), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.mappedResponseHeaders(java.lang.String[]), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.phase(int), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.crossOrigin(org.springframework.integration.dsl.support.Consumer), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.errorChannel(java.lang.String), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.headerMapper(org.springframework.integration.mapping.HeaderMapper), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.requestMapper(org.springframework.integration.mapping.InboundMessageMapper), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.messageConverters(org.springframework.http.converter.HttpMessageConverter[]), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.requestTimeout(long), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.payloadExpression(org.springframework.expression.Expression), public java.lang.Class org.springframework.integration.dsl.core.IntegrationComponentSpec.getObjectType(), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.requestPayloadType(java.lang.Class), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.payloadFunction(org.springframework.integration.dsl.support.Function), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.errorChannel(org.springframework.messaging.MessageChannel)]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1173) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1067) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866) ~[spring-context-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) ~[spring-context-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:314) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
    at org.springframework.platform.proxy.TestServerApplication.main(TestServerApplication.java:11) [classes/:na]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.integration.dsl.IntegrationFlow]: Factory method 'httpInboundGateway' threw exception; nested exception is java.lang.IllegalArgumentException: Found ambiguous parameter type [class [Ljava.lang.String;] for method match: [public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.multipartResolver(org.springframework.web.multipart.MultipartResolver), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.replyMapper(org.springframework.integration.mapping.OutboundMessageMapper), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.autoStartup(boolean), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.mappedResponseHeaders(java.lang.String[]), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.phase(int), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.crossOrigin(org.springframework.integration.dsl.support.Consumer), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.errorChannel(java.lang.String), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.headerMapper(org.springframework.integration.mapping.HeaderMapper), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.requestMapper(org.springframework.integration.mapping.InboundMessageMapper), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.messageConverters(org.springframework.http.converter.HttpMessageConverter[]), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.requestTimeout(long), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.payloadExpression(org.springframework.expression.Expression), public java.lang.Class org.springframework.integration.dsl.core.IntegrationComponentSpec.getObjectType(), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.requestPayloadType(java.lang.Class), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.payloadFunction(org.springframework.integration.dsl.support.Function), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.errorChannel(org.springframework.messaging.MessageChannel)]
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    ... 18 common frames omitted
Caused by: java.lang.IllegalArgumentException: Found ambiguous parameter type [class [Ljava.lang.String;] for method match: [public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.multipartResolver(org.springframework.web.multipart.MultipartResolver), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.replyMapper(org.springframework.integration.mapping.OutboundMessageMapper), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.autoStartup(boolean), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.mappedResponseHeaders(java.lang.String[]), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.phase(int), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.crossOrigin(org.springframework.integration.dsl.support.Consumer), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.errorChannel(java.lang.String), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.headerMapper(org.springframework.integration.mapping.HeaderMapper), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.requestMapper(org.springframework.integration.mapping.InboundMessageMapper), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.messageConverters(org.springframework.http.converter.HttpMessageConverter[]), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.requestTimeout(long), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.payloadExpression(org.springframework.expression.Expression), public java.lang.Class org.springframework.integration.dsl.core.IntegrationComponentSpec.getObjectType(), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.requestPayloadType(java.lang.Class), public org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec org.springframework.integration.dsl.http.BaseHttpInboundEndpointSpec.payloadFunction(org.springframework.integration.dsl.support.Function), public org.springframework.integration.dsl.core.MessagingGatewaySpec org.springframework.integration.dsl.core.MessagingGatewaySpec.errorChannel(org.springframework.messaging.MessageChannel)]
    at org.springframework.util.Assert.isNull(Assert.java:92) ~[spring-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.integration.util.MessagingMethodInvokerHelper.findHandlerMethodsForTarget(MessagingMethodInvokerHelper.java:497) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE]
    at org.springframework.integration.util.MessagingMethodInvokerHelper.<init>(MessagingMethodInvokerHelper.java:226) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE]
    at org.springframework.integration.util.MessagingMethodInvokerHelper.<init>(MessagingMethodInvokerHelper.java:149) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE]
    at org.springframework.integration.util.MessagingMethodInvokerHelper.<init>(MessagingMethodInvokerHelper.java:144) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE]
    at org.springframework.integration.handler.MethodInvokingMessageProcessor.<init>(MethodInvokingMessageProcessor.java:60) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE]
    at org.springframework.integration.handler.ServiceActivatingHandler.<init>(ServiceActivatingHandler.java:37) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE]
    at org.springframework.integration.dsl.IntegrationFlowDefinition.handle(IntegrationFlowDefinition.java:985) ~[spring-integration-java-dsl-1.2.1.RELEASE.jar:na]
    at org.springframework.integration.dsl.IntegrationFlowDefinition.handle(IntegrationFlowDefinition.java:964) ~[spring-integration-java-dsl-1.2.1.RELEASE.jar:na]
    at org.springframework.integration.dsl.IntegrationFlowDefinition.handle(IntegrationFlowDefinition.java:950) ~[spring-integration-java-dsl-1.2.1.RELEASE.jar:na]
    at org.springframework.platform.proxy.TunnelApplication.httpInboundGateway(TunnelApplication.java:93) ~[classes/:na]
    at org.springframework.platform.proxy.TunnelApplication$$EnhancerBySpringCGLIB$$4e2cc6e6.CGLIB$httpInboundGateway$3(<generated>) ~[classes/:na]
    at org.springframework.platform.proxy.TunnelApplication$$EnhancerBySpringCGLIB$$4e2cc6e6$$FastClassBySpringCGLIB$$e8c73d4b.invoke(<generated>) ~[classes/:na]
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:356) ~[spring-context-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.platform.proxy.TunnelApplication$$EnhancerBySpringCGLIB$$4e2cc6e6.httpInboundGateway(<generated>) ~[classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_66]
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_66]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_66]
    at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_66]
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    ... 19 common frames omitted

这是我修改过的TunnelApplication版本。原件可以在上面的项目链接中找到。

package org.springframework.platform.proxy;

import org.springframework.amqp.core.*;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.beans.factory.annotation.*;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.*;
import org.springframework.integration.config.EnableIntegration;
import org.springframework.integration.dsl.*;
import org.springframework.integration.dsl.amqp.Amqp;
import org.springframework.integration.dsl.http.Http;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.context.support.HttpRequestHandlerServlet;

@Configuration
@ComponentScan
@EnableAutoConfiguration
@EnableIntegration
public class TunnelApplication 
{
    public static void main(String[] args) 
    {
        SpringApplication.run(TunnelApplication.class, args);
    }

    @Value("${urlExpression}")
    private String urlExpression;

    @Value("${outboundQueue}")
    private String outboundQueue;

    @Value("${inboundQueue}")
    private String inboundQueue;

    @Autowired
    private ConnectionFactory rabbitConnectionFactory;

    @Bean
    public Queue requestQueue() 
    {
        return new Queue(outboundQueue, true, false, true);
    }

    @Bean
    public Queue targetQueue() 
    {
        return new Queue(inboundQueue, true, false, true);
    }

    @Bean
    public ServletRegistrationBean httpInboundGatewayServletRegistration() 
    {
        ServletRegistrationBean bean = new ServletRegistrationBean(httpInboundGatewayServlet(), "/tunnel/*");
        bean.setName("httpInboundGateway");
        return bean;
    }

    @Bean
    public HttpRequestHandlerServlet httpInboundGatewayServlet() 
    {
        return new HttpRequestHandlerServlet();
    }

    @Bean
    public RestTemplate safeRestTemplate()
    {
        return new RestTemplate();
    }

    @Bean
    public Jackson2JsonMessageConverter jsonMessageConverter()
    {
        return new Jackson2JsonMessageConverter();
    }


    @Bean
    public AmqpTemplate amqpTemplate()
    {
        RabbitTemplate result = new RabbitTemplate(rabbitConnectionFactory);
        result.setMessageConverter(jsonMessageConverter());
        return result;
    }

    @Bean
    public IntegrationFlow httpInboundGateway()
    {
        return IntegrationFlows.from("outbound")
                .handle(Http.inboundGateway("/tunnel"))
                .get();
    }

    @Bean
    public IntegrationFlow amqpOutbound(AmqpTemplate amqpTemplate) 
    {
        return IntegrationFlows.from("outbound")
                .handle(
                        Amqp.outboundAdapter(amqpTemplate)
                            .mappedRequestHeaders("http_*")
                            .routingKeyExpression("headers['routingKey']")
                        )
                .get();
    }    

    @Bean
    public IntegrationFlow amqpInboundGateway(ConnectionFactory connectionFactory) 
    {
        return IntegrationFlows.from("inbound").handle
                (
                    Amqp.inboundGateway(connectionFactory, inboundQueue)
                        .mappedRequestHeaders("http_*")
                        .messageConverter(jsonMessageConverter())
                )
                .get();
    }

    @Bean
    public IntegrationFlow httpOutboundGateway()
    {
        return IntegrationFlows.from("inbound").handle(Http.outboundGateway(urlExpression)).get();
    }
}

当我运行TunnelApplication时，我收到上述错误。我的maven pom文件已被修改如下。主要区别在于我使用的是spring boot 1.5.1，而原始项目使用的是1.1.4.BUILD-SNAPSHOT。

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.redi</groupId>
        <artifactId>redi-parent</artifactId>
        <version>5.0.0</version>
    </parent>
    <artifactId>http-amqp-tunnel</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>HTTP AMQP Tunnel</name>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-parent</artifactId>
                <version>1.5.1.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-integration</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.integration</groupId>
            <artifactId>spring-integration-amqp</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.integration</groupId>
            <artifactId>spring-integration-http</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.integration</groupId>
            <artifactId>spring-integration-jmx</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <start-class>org.springframework.platform.proxy.TunnelApplication</start-class>
        <java.version>1.8</java.version>
    </properties>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

我真的很感激一些指导。这是我的第一个春季整合项目，我觉得我很接近。

提前感谢您的帮助。

修改配置

package org.springframework.platform.proxy;

import org.springframework.amqp.core.*;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.beans.factory.annotation.*;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.*;
import org.springframework.integration.config.EnableIntegration;
import org.springframework.integration.dsl.*;
import org.springframework.integration.dsl.amqp.Amqp;
import org.springframework.integration.dsl.http.Http;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.context.support.HttpRequestHandlerServlet;

@Configuration
@ComponentScan
@EnableAutoConfiguration
@EnableIntegration
public class TunnelApplication 
{
    public static void main(String[] args) 
    {
        SpringApplication.run(TunnelApplication.class, args);
    }

    @Value("${urlExpression}")
    private String urlExpression;

    @Value("${outboundQueue}")
    private String outboundQueue;

    @Value("${inboundQueue}")
    private String inboundQueue;

    @Autowired
    private ConnectionFactory rabbitConnectionFactory;

    @Bean
    public Queue requestQueue() 
    {
        return new Queue(outboundQueue, true, false, true);
    }

    @Bean
    public Queue targetQueue() 
    {
        return new Queue(inboundQueue, true, false, true);
    }

    @Bean
    public ServletRegistrationBean httpInboundGatewayServletRegistration() 
    {
        ServletRegistrationBean bean = new ServletRegistrationBean(httpInboundGatewayServlet(), "/tunnel/*");
        bean.setName("httpInboundGateway");
        return bean;
    }

    @Bean
    public HttpRequestHandlerServlet httpInboundGatewayServlet() 
    {
        return new HttpRequestHandlerServlet();
    }

    @Bean
    public RestTemplate safeRestTemplate()
    {
        return new RestTemplate();
    }

    @Bean
    public Jackson2JsonMessageConverter jsonMessageConverter()
    {
        return new Jackson2JsonMessageConverter();
    }


    @Bean
    public AmqpTemplate amqpTemplate()
    {
        RabbitTemplate result = new RabbitTemplate(rabbitConnectionFactory);
        result.setMessageConverter(jsonMessageConverter());
        return result;
    }

    @Bean
    public IntegrationFlow httpInboundGateway()
    {
        return IntegrationFlows.from(Http.inboundGateway("/tunnel")).channel("outbound")
                .get();
    }

    @Bean
    public IntegrationFlow amqpOutbound(AmqpTemplate amqpTemplate) 
    {
        return IntegrationFlows.from("outbound")
                .handle(
                        Amqp.outboundAdapter(amqpTemplate)
                            .mappedRequestHeaders("http_*")
                            .routingKeyExpression("headers['routingKey']")
                        )
                .get();
    }    

    @Bean
    public IntegrationFlow amqpInboundGateway(ConnectionFactory connectionFactory) 
    {
        return IntegrationFlows.from
                (
                    Amqp.inboundGateway(connectionFactory, inboundQueue)
                        .mappedRequestHeaders("http_*")
                        .messageConverter(jsonMessageConverter())
                )
                .channel("inbound")
                .get();
    }

    @Bean
    public IntegrationFlow httpOutboundGateway()
    {
        return IntegrationFlows.from("inbound").handle(Http.outboundGateway(urlExpression)).get();
    }

我导航到http://localhost:9000/tunnel时遇到的错误如下：

org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'httpInboundGateway' is expected to be of type 'org.springframework.web.HttpRequestHandler' but was actually of type 'org.springframework.integration.dsl.StandardIntegrationFlow'
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:378) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1087) ~[spring-context-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.web.context.support.HttpRequestHandlerServlet.init(HttpRequestHandlerServlet.java:57) ~[spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at javax.servlet.GenericServlet.init(GenericServlet.java:158) ~[tomcat-embed-core-8.5.11.jar:8.5.11]
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1183) ~[tomcat-embed-core-8.5.11.jar:8.5.11]
    at     

    }

Answer 1

  

.handle(Http.inboundGateway("/tunnel"))

您无法使用.handle()方法调用入站网关。

入站端点不是消费者。

看起来应该是.from(Http.in...)。

amqp入站端点存在同样的问题。