使用带弹簧的比较器初始化PriorityQueue

Question

如何在构造函数中执行以下等效操作，是否可以通过Java代码？

//non DI code
PriorityQueue<Object> queue = new PriorityQueue<Object>(10,
            Comparator.comparing(Object::getOrder)
            .thenComparing(Object::getDate));

我想将它注入到下面的构造函数中

@Autowired
public CustomPriorityQueue(PriorityQueue<Object> queue)
{
    this.queue = queue;
}

Answer 1

确实我在@Configuration类中需要一个@Bean方法

@SpringBootApplication
@ComponentScan
public class Application {

public static void main(String[] args) {

    SpringApplication.run(Application.class, args);

}


@Bean
@Primary
public PriorityQueue<WorkOrder> priorityQueue() {

    PriorityQueue<WorkOrder> queue = new PriorityQueue<WorkOrder>(10,
            Comparator.comparing(WorkOrder::getRank).thenComparing(
                    WorkOrder::getDatetime));

    return queue;
}
}