要在TaskExecutor中运行作业,我需要实例化实现Runnable接口的新作业.要解决这个问题,我会
create a new Spring Prototype Bean named Job “on Demand”.
但在我的应用程序中,Job有两个字段LocationChanger和QueryTyper.这两个应该共享由WebDriverFactory创建的同一WebDriver实例.
现在的问题是如何用Spring设计它?
这是相关代码:
@Component
@Scope("prototype")
public class Job implements Runnable {
@Autowired
LocationChanger locationChanger;
@Autowired
QueryTyper queryTyper;
@Override
public void run() {
// at this point the locationChanger and
// queryTyper should share the same instance
}
}
@Component
@Scope("prototype")
public class LocationChanger {
@Autowired
@Qualifier(...) // For every new Job Created, the same WebDriver instance should be injected.
WebDriver webDriver
}
@Component
@Scope("prototype")
public class QueryTyper {
@Autowired
@Qualifier(...) // For every new Job Created, the same WebDriver instance should be injected.
WebDriver webDriver
}
public class WebDriverFactoryBean implements FactoryBean<WebDriver> {
@Override
public WebDriver getObject() throws Exception {
return // createdAndPrepare...
}
@Override
public boolean isSingleton() {
return false;
}
}
非常感谢!
更新1:
一种可能的解决方案可能是仅在Job中自动装载WebDriver,然后在@PostConstruct中将此WebDriver注入LocationChanger和QueryTyper.但后来我手工连线.
@Component
@Scope("prototype")
public class Job implements Runnable {
@Autowired
LocationChanger locationChanger;
@Autowired
QueryTyper queryTyper;
@Autowired
WebDriver webDriver;
@PostConstruct
public void autowireByHand() {
locationChanger.setWebDriver(this.webDriver);
queryTyper.setWebDriver(this.webDriver);
}
}
// + remove all @Autowired WebDriver's from LocationChanger and QueryTyper
最佳答案 如果我了解您的要求,您需要在Job和LocationChanger之间共享WebDriver.所以它不是原型范围,也不是单例范围.为了解决这个问题,我认为您要么必须按照您的建议手动完成,要么您可以尝试实现自己的范围,如
Spring reference documentation中所述
编辑
我不认为你“handwired”解决方案看起来不好BTW.