使用 spring boot # SOAP 服务调用多个并行调用 SOAP 服务

Question

I am currently using spring boot. I have a list of request objects (around 1000) and would like to call SOAP services in parallel for all the objects and get the response for all of them. Once all the request is processed, I want to execute my program in parallel.

Any good recommendations?

public class ServiceImpl implements Service {

    @Autowired
    private SOAPConnector connector;

    public void getEmployeeData(){
    List<Request> lstRequest = [List of Objects];
    List<Response> lstResponse = new ArrayList();
    for(int i=0 ; i <=lstRequest.size()-1; i++)
    {       
        lstResponse.add(connector.callEmployeeService());
    }   
        callAnotherMethod(lstResponse);
    }
}


public class SOAPConnector extends WebServiceGatewaySupport {

    public Response callEmployeeService(Request request) {        
        try{
            return (Response) getWebServiceTemplate().marshalSendAndReceive(request);
        } catch (Exception e) {            

        }
    }
}


@Configuration
public class Configurator {

    @Value("${service.url}")
    private String SERVICE_URL;

    @Autowired
    ComponentMessageSender httpComponentsMessageSender;

    @Bean
    public SOAPConnector getClient() {
        SOAPConnector client = new SOAPConnector();
        client.setMarshaller(getMarshaller());
        client.setUnmarshaller(getMarshaller());
        client.setDefaultUri(SERVICE_URL);

        try {
            client.setMessageSender(httpComponentsMessageSender.getHttpComponentsMessageSender());

        } catch (Exception e){
            System.out.println("error on message sender ");
        }

        return client;
    }

    private Jaxb2Marshaller getMarshaller() {
        Jaxb2Marshaller marshaller = new Jaxb2Marshaller();
        marshaller.setClassesToBeBound(Request.class, Response.class);
        return marshaller;
    }
}

Answer 1

Please have a look at Java 8's CompletableFuture . You can have a go as follows:

List<Request> lstRequest = [List of Objects];
CompletableFuture[] futures = new CompletableFuture[lstRequest.size()];

for(int i=0 ; i <=lstRequest.length - 1; i++) {       
    futures[i] = CompletableFuture.supplyAsync(() -> connector.callEmployeeService());
}   

CompletableFuture.allOf(lstResponse).thenApply((result) -> {
    // This is where you get all of your responses
});