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

Spring Integration 5.1 - integration flow convertion with @IntegrationConverter doesn't work

我将 Spring 引导版本从 2.0.5.RELEASE 升级到 2.1.8.RELEASE(因此 Spring 集成从 5.0 升级到 5.1)并且集成流程中的自动类型转换没有不再工作了。我习惯于在集成流程代码中定义一组 @IntegrationConverter 组件并使用操作 transform(Type.class, p -> p) 进行自动转换,但在新版本中它似乎被破坏了。

<?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>

和 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shell一起使用:

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

使用以前的版本 (2.0.5.RELEASE) 程序像以前一样工作得很好,但是使用新版本 (2.1.8.RELEASE) 我得到这个错误(并且没有 "OK" 回复):

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 已被 MessageConverter 取代,现在 Jackson 用于将消息从一种类型转换为另一种类型。

我是否错误地使用了集成流程的类型转换?您有新版本的铸造对象的新解决方案吗?或者这只是一种倒退?

提前致谢!

这是 Spring 集成中的错误。 我们只是没有在 GenericMessageConverter.

中使用正确的 ConversionService

请就此事提出 GH 问题。

同时,您的解决方法如下:

@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,我们覆盖框架配置的任何内容,并注入一个适当的 IntegrationUtils.INTEGRATION_CONVERSION_SERVICE_BEAN_NAME bean,它随 @IntegrationConverter 组件一起提供。