Java Spring引导集成url分页解决方案

我使用spring boot integration连接到restful Web服务并从中检索数据，以下是我的部分代码：

@Bean
public PollerMetadata downloadTrigger()
{
    PeriodicTrigger trigger = new PeriodicTrigger(config.getDownloadInterval());
    trigger.setFixedRate(true);
    PollerMetadata pollerMetadata = new PollerMetadata();
    pollerMetadata.setTrigger(trigger);
    pollerMetadata.setMaxMessagesPerPoll(1);
    return pollerMetadata;
}

@Bean(name = PollerMetadata.DEFAULT_POLLER)
public PollerMetadata poller()
{
    PeriodicTrigger trigger = new PeriodicTrigger(10);
    trigger.setFixedRate(true);
    PollerMetadata pollerMetadata = new PollerMetadata();
    pollerMetadata.setTrigger(trigger);
    return pollerMetadata;
}

@InboundChannelAdapter(value = "channel1", poller = @Poller("downloadTrigger"))
public ResponseEntity<AppsItem[]> download()
{
    String url = "https://example.com/?page{pageNumber}";
    try
    {
        SSLUtil.turnOffSslChecking();
    }
    catch (Exception e)
    {

    }

    HttpHeaders requestHeaders = new HttpHeaders();
    requestHeaders.setAccept(Collections.singletonList(new MediaType("application","json")));
    HttpEntity<?> requestEntity = new HttpEntity<Object>(requestHeaders);
    template.getMessageConverters().add(new MappingJackson2HttpMessageConverter());


    ResponseEntity<AppsItem[]> responseEntity = template.exchange(url, HttpMethod.GET, requestEntity, AppsItem[].class, 10, 1);


    return responseEntity;
}

@Splitter(inputChannel = "channel1", outputChannel = "channel2")
public List<AppsItem> scrape(ResponseEntity<AppsItem[]> payload)
{

    //do something;
}

我需要像下面这样的东西：

    @InboundChannelAdapter(value = "channel1", poller = @Poller("downloadTrigger"))
public ResponseEntity<AppsItem[]> download()
{
    String url = "https://example.com/?page{pageNumber}";
    try
    {
        SSLUtil.turnOffSslChecking();
    }
    catch (Exception e)
    {

    }

    HttpHeaders requestHeaders = new HttpHeaders();
    requestHeaders.setAccept(Collections.singletonList(new MediaType("application","json")));
    HttpEntity<?> requestEntity = new HttpEntity<Object>(requestHeaders);
    template.getMessageConverters().add(new MappingJackson2HttpMessageConverter());


    ResponseEntity<AppsItem[]> responseEntity;
        int i = 0;
        do
        {
            i++;
            responseEntity = template.exchange(url, HttpMethod.GET, requestEntity, AppsItem[].class, 10, i);
            scraper.parse(responseEntity);
            LOG.info("entry={}", "");
            //Send response to the next channel in this loop 
        }
        while (responseEntity.hasBody());


    return responseEntity;
}

从downloadTrigger中删除setMaxMessagesPerPoll1，每次轮询上的轮询器将继续调用下载，直到返回null

---

增加每次调用的页数，并在没有更多页面时重置；轮询器将在间隔后运行。

您能发布一些代码吗？我是初学者，我没有任何接收方法。对不起。我是说下载。内部有一个receive方法调用你的。你救了我的命，兄弟

    @InboundChannelAdapter(value = "channel1", poller = @Poller("downloadTrigger"))
public ResponseEntity<AppsItem[]> download()
{
    String url = "https://example.com/?page{pageNumber}";
    try
    {
        SSLUtil.turnOffSslChecking();
    }
    catch (Exception e)
    {

    }

    HttpHeaders requestHeaders = new HttpHeaders();
    requestHeaders.setAccept(Collections.singletonList(new MediaType("application","json")));
    HttpEntity<?> requestEntity = new HttpEntity<Object>(requestHeaders);
    template.getMessageConverters().add(new MappingJackson2HttpMessageConverter());


    ResponseEntity<AppsItem[]> responseEntity;
        int i = 0;
        do
        {
            i++;
            responseEntity = template.exchange(url, HttpMethod.GET, requestEntity, AppsItem[].class, 10, i);
            scraper.parse(responseEntity);
            LOG.info("entry={}", "");
            //Send response to the next channel in this loop 
        }
        while (responseEntity.hasBody());


    return responseEntity;
}