Spring Integration 5.1-使用@IntegrationConverter进行的集成流转换不起作用

时间:2019-09-12 16:13:19

标签: java spring-boot spring-integration upgrade spring-integration-dsl

我将我的Spring引导版本从2.0.5.RELEASE升级到2.1.8.RELEASE(因此Spring Integration从5.0升级到5.1),并且集成流程中的自动类型转换不再起作用。我习惯于定义一组@IntegrationConverter组件并通过集成流程代码中的操作transform(Type.class, p -> p)自动转换,但是在新版本中,它似乎已损坏。

<?xml version="1.0" encoding="UTF-8"?>
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.8.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>org.grorg</groupId>
    <artifactId>grointegration</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>grointegration</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-integration</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.integration</groupId>
            <artifactId>spring-integration-ip</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

还有Main.java文件:

package org.grorg.grointegration;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.core.convert.converter.Converter;
import org.springframework.integration.config.IntegrationConverter;
import org.springframework.integration.dsl.IntegrationFlow;
import org.springframework.integration.dsl.IntegrationFlows;
import org.springframework.integration.dsl.Transformers;
import org.springframework.integration.ip.dsl.Tcp;
import org.springframework.stereotype.Component;

class Test {
    @Override
    public String toString() {
        return "test";
    }
}

@Component
@IntegrationConverter
class Convert implements Converter<String, Test> {
    @Override
    public Test convert(String s) {
        return new Test();
    }
}

@SpringBootApplication
public class Main {

    public static void main(String[] args) {
        SpringApplication.run(GrointegrationApplication.class, args);
    }

    @Bean
    public IntegrationFlow server() {
        return IntegrationFlows
                .from(Tcp.inboundGateway(Tcp.netServer(1234)))
                .transform(Transformers.objectToString())
                .transform(Test.class, id -> id) // in 2.1 I could use .convert(Test.class) but the problem is the same
                .log()
                .handle((p, h) -> "OK")
                .get();
    }
}

与外壳一起使用:

telnet localhost 1234
> test
> OK
[...]

在以前的版本(2.0.5.RELEASE)中,程序可以像以前那样很好地工作,但是在新版本(2.1.8.RELEASE)中,我收到此错误(并且没有“ OK”响应):

org.springframework.integration.handler.ReplyRequiredException: No reply produced by handler 'server.org.springframework.integration.config.ConsumerEndpointFactoryBean#1', and its 'requiresReply' property is set to true.
[...]

我发现ConversionService替换了MessageConverter,现在杰克逊被用来将消息从一种类型转换为另一种类型。

我在集成流程中错误地使用类型转换吗?您是否有使用新版本投射对象的新解决方案?还是只是回归?

谢谢!

1 个答案:

答案 0 :(得分:4)

这是Spring Integration中的错误。 我们只是没有在ConversionService中使用适当的GenericMessageConverter

请对此事提出GH问题。

与此同时,针对您的解决方法是这样的:

@Bean(name = IntegrationContextUtils.ARGUMENT_RESOLVER_MESSAGE_CONVERTER_BEAN_NAME)
public static ConfigurableCompositeMessageConverter configurableCompositeMessageConverter(
        @Qualifier(IntegrationUtils.INTEGRATION_CONVERSION_SERVICE_BEAN_NAME) ConversionService conversionService) {
    return new ConfigurableCompositeMessageConverter(
            Collections.singleton(new GenericMessageConverter(conversionService)));
}

因此,我们将覆盖框架配置的所有内容,并注入IntegrationUtils.INTEGRATION_CONVERSION_SERVICE_BEAN_NAME组件随附的适当的@IntegrationConverter bean。