Connecting Spring batch to Spring integration workflow

I'm trying to combine Spring Batch and Spring Integration in one project. So my idea is that Spring Batch using StepBuilderFactory reads the file with a custom method returning a String while the .processor creates a new Message<String> using MessageBuilder and sends that message into a channel...
So from here Spring Integration connects to that channel and starts working its workflow..

Any idea how to accomplish this? since i'm not getting any results besides getting the read String to the .processor but i can't reach Spring integration from there. I read about the remotechunkingmanagerstepbuilderfactory but it's not suited for my purposes because it sets automatically a specific type

 @Bean
    public TaskletStep managerStep() throws Exception {

        return managerStepBuilderFactory.get("managerStep")
                .<String, String>chunk(5)
                .reader(readFile())
                .processor(new MessageProcess())//write String into Message and send it to Channel
                .writer(doSomething())//not important
                .build();
    }

public class MessageProcess implements ItemProcessor<String, String> {

    @Override
    public String process(String readString) throws Exception {
        Message<String> message = MessageBuilder.withPayload(item).build();
        channel().send(message); //sending message to channel
        return "item";

    }
}

    @Bean
    public IntegrationFlow workflow() {
        return IntegrationFlows
                .from(channel())
                .handle(checkMessage()) //checkMessage reads payload from Message<?> message
                .get();
    }

    @Bean
    public DirectChannel channel() {
        return new DirectChannel();
    }