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我如何通过Java 1.7中的Spring DSL在Sftp Inbound适配器中动态传输消息

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我有一个Sftp入站流，我从DefaultSftpSessionFactory获取了会话信息 . 但我需要动态实现多个会话信息，我将从数据库表中获取 . 这意味着我需要在集成流程中实现多个Sftp服务器详细信息 . 现在我已经完成了从单一来源到单个目的地的文件传输，但我需要将多个源实现到多个目标 . 所以任何人都可以提供一些指针 .

这是我的会话工厂...这里我有一个Sftp服务器信息，但如何配置多个服务器详细信息 .

@Autowired
    private DefaultSftpSessionFactory sftpSessionFactory;

    @Bean
    public DefaultSftpSessionFactory sftpSessionFactory() {
        DefaultSftpSessionFactory factory = new DefaultSftpSessionFactory(
                true);
        factory.setHost("111.11.12.143");
        factory.setPort(22);
        factory.setUser("sftp");
        factory.setPassword("*******");         
        return factory;
    }

这是我的Sftp Inbound流程..

@Bean
    public IntegrationFlow sftpInboundFlow() {
    System.out.println("enter sftpInboundFlow....."
            + sftpSessionFactory.getSession());     
    return IntegrationFlows
            .from(Sftp.inboundAdapter(this.sftpSessionFactory)
                    .preserveTimestamp(true).remoteDirectory(remDir)
                    .regexFilter(".*\\.txt$")
                    .localFilenameExpression("#this.toUpperCase()")
                    .localDirectory(new File(localDir))
                    .remoteFileSeparator("/"),
                    new Consumer<SourcePollingChannelAdapterSpec>() {
                        @Override
                        public void accept(SourcePollingChannelAdapterSpec e) {
                            e.id("sftpInboundAdapter")
                                    .autoStartup(true)
                                    .poller(Pollers.fixedRate(1000)
                                            .maxMessagesPerPoll(1));
                        }
                    })
            //.channel(MessageChannels.queue("sftpInboundResultChannel"))
                    .channel(sftpInboundResultChannel())
            .get();
}

正如加里所建议我正在编辑我的帖子....

嗨加里，我正在参考Github dynamic FTP example .

通过ChannelResolver类，我需要调用上面的DSL类 . 并在不使用XML的情况下在context属性中设置动态值 .

在我的ChannelResolver类中，我想要这样的东西

StandardEnvironment env = new StandardEnvironment();
Properties props = new Properties();
props.setProperty("inbound.host", host);    //I am getting the value of 'host' from a DB table.
PropertiesPropertySource pps = new PropertiesPropertySource("sftpprop", props);
env.getPropertySources().addLast(pps);
context.setEnvironment(env); 

And my DSL class I need to use like this.
@Value("${inbound.host}")
private String host;

So in this way can I set dynamic value for String 'host' ?

我正在编辑原帖...........

In my Outbound dynamic resolver class I am doing like this


    StandardEnvironment env = new StandardEnvironment();
    Properties props = new Properties();        
    props.setProperty("outbound.host", host);
    props.setProperty("outbound.port", String.valueOf(port));
    props.setProperty("outbound.user", user);
    props.setProperty("outbound.password", password);
    props.setProperty("outbound.remote.directory", remoteDir);
    props.setProperty("outbound.local.directory", localDir);        

    PropertiesPropertySource pps = new PropertiesPropertySource("ftpprops", props);
    env.getPropertySources().addLast(pps);
    ctx.setEnvironment(env);


And this is my dsl class....

@Autowired
private DefaultSftpSessionFactory sftpSessionFactory;

@Bean
public DefaultSftpSessionFactory sftpSessionFactory(@Value("${outbound.host}") String host, @Value("${outbound.port}") int port,
        @Value("${outbound.user}") String user, @Value("${outbound.password}") String password
        ) {
    DefaultSftpSessionFactory factory = new DefaultSftpSessionFactory(true);
    factory.setHost(host);
    factory.setPort(port);
    factory.setUser(user);
    factory.setPassword(password);      
    return factory;
}


@Bean
public IntegrationFlow fileInboundFlow(@Value("${outbound.local.directory}") String localDir)
{
    return IntegrationFlows
            .from(Files.inboundAdapter(new File(localDir)),
                    new Consumer<SourcePollingChannelAdapterSpec>() {

                        @Override
                        public void accept(SourcePollingChannelAdapterSpec e) {
                            e.autoStartup(true).poller(
                                    Pollers.fixedDelay(5000)
                                            .maxMessagesPerPoll(1));
                        }
                    })
                    .channel(sftpSendChannel())
                    .get();
}

@Bean
public IntegrationFlow sftpOutboundFlow(@Value("${outbound.remote.directory}") String remDir) {    
    return IntegrationFlows
            .from(sftpSendChannel())
            .handle(Sftp.outboundAdapter(this.sftpSessionFactory)                       
                    .useTemporaryFileName(false)
                    .remoteDirectory(remDir))
                    .get();
}

@Bean
public MessageChannel sftpSendChannel() {
    return new DirectChannel();
}

@Bean
public static PropertySourcesPlaceholderConfigurer configurer1() {
    return new PropertySourcesPlaceholderConfigurer();      
}


And this the error log from console...

org.apache.catalina.core.StandardContext listenerStart SEVERE：将上下文初始化事件发送到类org.springframework.web.context.ContextLoaderListener org.springframework.beans.factory.BeanCreationException的侦听器实例的异常：创建名为'sftpOutBoundDsl'的bean时出错：注入自动连接的依赖项失败;嵌套异常是org.springframework.beans.factory.BeanCreationException：无法自动装配字段：private org.springframework.integration.sftp.session.DefaultSftpSessionFactory com.tcs.iux.ieg.sftp.dynamic.SftpOutBoundDsl.sftpSessionFactory;嵌套异常是java.lang.IllegalArgumentException：无法解析org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues（AutowiredAnnotationBeanPostProcessor.java:334）中字符串值“$ ”中的占位符'outbound.host'在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean（AbstractAutowireCapableBeanFactory.java:1204）在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:538）在org.springframework.beans.factory .support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:476）org.springframework.beans.factory.support.AbstractBeanFactory $ 1.getObject（AbstractBeanFactory.java:302）at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（ DefaultSingletonBeanRegistry.java:229）org.springframework.beans.factory.support.AbstractBeanFa位于org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons的Org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:193）中的ctory.doGetBean（AbstractBeanFactory.java:298）（DefaultListableBeanFactory.java： 725）org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization（AbstractApplicationContext.java:757）atg.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:480）at org.springframework.web.context.ContextLoader .configureAndRefreshWebApplicationContext（ContextLoader.java:403）org.springframework.web.context.ContextLoader.initWebApplicationContext（ContextLoader.java:306）org.springframework.web.context.ContextLoaderListener.contextInitialized（ContextLoaderListener.java:106）at org . apache.catalina.core.StandardContext.listenerStart（StandardContext.java:4973）at org.apache.catalina.core.StandardContext.startInternal（Standar） dContext.java:5467）org.apache.catalina.util.LifecycleBase.start（LifecycleBase.java:150）org.apache.catalina.core.ContainerBase $ StartChild.call（ContainerBase.java:1559）org.apache .catalina.core.ContainerBase $ StartChild.call（ContainerBase.java:1549）at java.util.concurrent.FutureTask.run（FutureTask.java:262）at java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1145 ）java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:615）at java.lang.Thread.run（Thread.java:744）引起：org.springframework.beans.factory.BeanCreationException：无法autowire字段：private org.springframework.integration.sftp.session.DefaultSftpSessionFactorycom.tcs.iux.ieg.sftp.dynamic.SftpOutBoundDsl.sftpSessionFactory;嵌套异常是java.lang.IllegalArgumentException：无法在org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor $ AutowiredFieldElement.inject（AutowiredAnnotationBeanPostProcessor.java）中解析字符串值“$ ”中的占位符'outbound.host' . 555）org.springframework.beans.factory.annotation.InjectionMetadata.inject（InjectionMetadata.java:87）at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues（AutowiredAnnotationBeanPostProcessor.java：331）... 22更多原因by：java.lang.IllegalArgumentException：无法在org.springframework的org.springframework.util.PropertyPlaceholderHelper.parseStringValue（PropertyPlaceholderHelper.java:174）的字符串值“$ ”中解析占位符'outbound.host' . util.PropertyPlaceholderHelper.replacePlaceholders（PropertyPlaceholderHelper.java:126）at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders（Abstract） PropertyResolver.java:204）在org.springframework的org.springframework.context.support.PropertySourcesPlaceholderConfigurer $ 2.resolveStringValue（PropertySourcesPlaceholderConfigurer.java:175）的org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders（AbstractPropertyResolver.java:178） . bean.factory.support.AbstractBeanFactory.resolveEmbeddedValue（AbstractBeanFactory.java:800）位于org.springframework.beans.factory.support.DefaultListableBeanFactory的org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency（DefaultListableBeanFactory.java:917） . 在org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray（ConstructorResolver.java:743）的org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument（ConstructorResolver.java:815）的resolveDependency（DefaultListableBeanFactory.java:904）在org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod（Constru ctorResolver.java:466）org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod（AbstractAutowireCapableBeanFactory.java:1113）org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance（AbstractAutowireCapableBeanFactory.java:1008）at org org.springframework.beans.factory.support上的.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:505）org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:476） .AbstractBeanFactory $ 1.getObject（AbstractBeanFactory.java:302）位于org.springframework.beans.factory.support.DefaultSingletonBeanRegistry . java：298）org.springframework.beans.factory.support.AbstractBeanFactory位于org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency（DefaultListableBeanFactory.java:1006）的org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates（DefaultListableBeanFactory.java:1088）中的.getBean（AbstractBeanFactory.java:193） ）org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency（DefaultListableBeanFactory.java:904）at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor $ AutowiredFieldElement.inject（AutowiredAnnotationBeanPostProcessor.java：527）... 24更多

spring-integration

1 回答

  • 1

    它目前不受支持 .

    我们有一个open JIRA to add support for dynamic server selection但是不太可能及时完成即将推出的4.2版本 .

    您可以通过编写自己的自定义委派会话工厂来解决此问题，该工厂使用某些条件（例如 ThreadLocal ）来确定要使用的委托工厂 .

    EDIT:

    与XML一样，您需要一个 PropertySourcesPlaceholderConfigurer bean .

    您还应该使用工厂方法注入，因为 @Configuration 类创建得太早而无法注入 @Value ...

    @Configuration
public class FooConfig {

    @Bean
    public DefaultSftpSessionFactory factory(
            @Value("${inbound.host}") String host, 
            @Value("${inbound.port}") int port) {
        DefaultSftpSessionFactory sf = new DefaultSftpSessionFactory();
        sf.setHost(host);
        sf.setPort(port);
        return sf;
    }

    @Bean
    public PropertySourcesPlaceholderConfigurer configurer() {
        return new PropertySourcesPlaceholderConfigurer();
    }

}

    .

    public class Testing {

    @Test
    public void test() {
        AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
        context.register(FooConfig.class);
        StandardEnvironment env = new StandardEnvironment();
        Properties props = new Properties();
        props.setProperty("inbound.host", "bar");
        props.setProperty("inbound.port", "23");
        PropertiesPropertySource pps = new PropertiesPropertySource("sftpprop", props);
        env.getPropertySources().addLast(pps);
        context.setEnvironment(env);
        context.refresh();
        DefaultSftpSessionFactory sessionFactory = context.getBean(DefaultSftpSessionFactory.class);
        assertEquals("bar", TestUtils.getPropertyValue(sessionFactory, "host"));
        context.close();
    }

}

    顺便说一句，the delegating session factory will be in 4.2 after all .

    EDIT2 ：

    你可以避免配置类的早期实例化并使用全局 @Value 注入，只要你创建PSPC bean static ...

    @Configuration
public class FooConfig {

    @Value("${foo}")
    public String foo;

    @Bean
    public String earlyFoo() {
        return this.foo;
    }

    @Bean
    public String foo(@Value("${foo}") String foo) {
        return foo;
    }

    @Bean
    public static PropertySourcesPlaceholderConfigurer configurer() {
        return new PropertySourcesPlaceholderConfigurer();
    }

}

    在这种情况下，将按预期填充 earlyFoo .

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