Question

我必须从 EnvironmentModule 触发 WitcherDriver.startPoller（） ，因为EnvironmentModule是从Abstractmodule扩展而来的不知道如何在 EnvironmentModule 内部注入依赖关系，甚至有可能吗？如果不是，如何从 EnvironmentModule

触发 WitcherDriver.startPoller（）

@Log4j2
@AllArgsConstructor(onConstructor = @__(@Inject))
public class WitcherDriver {

    private ClientTrafficCalculator clientTrafficCalculator;
    private TaskAllocator taskAllocator;


    @SneakyThrows
    public void startPoller() {

        new Thread(ProxyFleetManager::collectProxyIps).start();
        new Thread(clientTrafficCalculator::prepareRateLimiterForAllClients).start();
        new Thread(taskAllocator::processPendingRecordsInDDB).start();
        log.info("All threads are started");

    }

}

环境模块

    @Log4j2
    @AllArgsConstructor(onConstructor = @__(@Inject))
    public class EnvironmentModule extends AbstractModule {

        private WitcherDriver witcherDriver;


        @SneakyThrows
        public EnvironmentModule(final String[] args) {

            marketplace = System.getProperty("realm", "USTest");
            final String realm = getPropOrDefault("realm", "USTest");
            final String root = getPropOrDefault("root", ".");
            AppConfig.initialize(SERVICE_NAME, null, appConfigArgs);

            witcherDriver.startPoller(); 

        }

    @Override
    public void configure() {
        install(new TomcatContainerModule(new ServiceModule(Test)));
    }
}

预期：

witcherDriver.startPoller(); //正常工作

当前结果

witcherDriver.startPoller(); //引发空指针异常，因为它没有被注入并且 witcherDriver 为空

Answer 1

我想我找到了答案，我们可以做以下事情

@Log4j2
public class WitcherDriver extends AbstractModule {


    @Override
    public void configure() {
        requestInjection(this);
    }

    @Inject
    public void startPoller(ClientTrafficCalculator clientTrafficCalculator,
        TaskAllocator taskAllocator, ProxyFleetManager proxyFleetManager) {

        new Thread(proxyFleetManager::collectProxyIps).start();
        new Thread(clientTrafficCalculator::prepareRateLimiterForAllClients).start();
        new Thread(taskAllocator::processPendingRecordsInDDB).start();
        log.info("All threads are started");

        //ProxyFleetManager::collectProxyIps
    }


}

我们必须安装它，安装将触发该方法

install(new WitcherDriver()); //trigger pollers for proxy and task allocation

谢谢 Jk

Guice-如何在扩展Abstract模块的类中注入依赖关系-Java

1 个答案: