我有一个SpringBoot应用程序。我有一台专用的服务器，在这里我将通过HTTP GET请求读取数据。我为Spring Integration模块配置了http-outbound-config.xml文件。 当我运行以下代码时，一切都很好：

http-outbound-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns:int="http://www.springframework.org/schema/integration"
   xmlns:int-http="http://www.springframework.org/schema/integration/http"
   xsi:schemaLocation="http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/integration https://www.springframework.org/schema/integration/spring-integration.xsd
    http://www.springframework.org/schema/integration/http https://www.springframework.org/schema/integration/http/spring-integration-http.xsd">

<int:channel id="requestChannel"/>
<int:channel id="replyChannel">
    <int:queue capacity='10'/>
</int:channel>

<int-http:outbound-gateway id="outboundGateway"
                           request-channel="requestChannel"
                           url="http://server/API.jsp?id=1"
                           http-method="GET"
                           expected-response-type="java.lang.String"
                           charset="UTF-8"
                           reply-channel="replyChannel"/>
</beans>

主要应用类别：

package test;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ImportResource;
import ru.eco.products.waste.egr.Integration;

@SpringBootApplication
@ImportResource("/META-INF/spring/integration/http-outbound-config.xml")
public class Application {
    public static void main(String[] args) {
        Integration integration = new Integration();
        integration.start();
        SpringApplication.run(WasteWebClientApplication.class,
                              args
                             );
    }
    
}

整合类：

package test;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportResource;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.PollableChannel;
import org.springframework.messaging.support.MessageBuilder;
import org.springframework.stereotype.Component;
import org.springframework.web.client.RestTemplate;

@Component
@Configuration
public class Integration { 
    public void start() {
        ClassPathXmlApplicationContext
               context = new ClassPathXmlApplicationContext("classpath:META-INF/spring/integration/http-outbound-config.xml");
        context.start();


        MessageChannel requestChannel = context.getBean("requestChannel", MessageChannel.class);
        PollableChannel replyChannel = context.getBean("replyChannel", PollableChannel.class);
        Message<?> message = MessageBuilder.withPayload("").build();
        requestChannel.send(message);
        
        Message<?> receivedMsg = replyChannel.receive();
        System.out.println("RESULT IS : " + receivedMsg.getPayload());
    }
}

但是，当我尝试自动连接MessageChannel和PollableChannel时，会收到一个空指针异常。

集成类（不工作示例）：

package test;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportResource;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.PollableChannel;
import org.springframework.messaging.support.MessageBuilder;
import org.springframework.stereotype.Component;
import org.springframework.web.client.RestTemplate;

@Component
@Configuration
public class Integration {
    @Autowired
    @Qualifier("requestChannel")
    MessageChannel requestChannel;
    @Autowired
    @Qualifier("replyChannel")
    PollableChannel replyChannel;
    
    public void start() {
        Message<?> message = MessageBuilder.withPayload("").build();
        requestChannel.send(message);
        
        Message<?> receivedMsg = replyChannel.receive();
        System.out.println("RESULT IS : " + receivedMsg.getPayload()); 
    }
}

1. 问题1：为什么自动装配不起作用？
2. 问题2：从专用服务器获取数据并将其保存到DB的最佳方法是什么？这样的配置可以吗？我将为响应创建一个模型类，然后通过JPA将其保存到DB中。
3. 问题3：我需要从服务器读取异步模式下的作品。如何在Spring Boot中实现它？因此，这里的主要思想是，我将从UI接收POST方法，并将启动与Web服务的集成。集成完成后，我需要通知用户。
4. 问题4：也许 Camel 会是这里最好的解决方案？

堆栈：Java 11，Spring Boot，百里香+引导程序。

预先感谢你的答复。