java - AnnotationConfigApplicationContext@4c0bc4 尚未刷新

Question

我正在获取以下代码的堆栈跟踪，

public interface SequenceDAO {

    public Sequence getSequence(String sequenceId);

    public int getNextValue(String sequenceId);
}

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public class Sequence {
    private int initial;
    private String prefix;
    private String suffix;

    public Sequence(int initial, String prefix, String suffix) {
        this.initial = initial;
        this.prefix = prefix;
        this.suffix = suffix;
    }

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@Component("SequenceDAO")
public class SequenceDAOImpl implements SequenceDAO {

    private Map<String, Sequence> sequences;
    private Map<String, Integer> values;

    public SequenceDAOImpl() {
        sequences = new HashMap<>();
        sequences.put("IT", new Sequence(30, "IT", "A"));
        values = new HashMap<>();
        values.put("IT", 10000);
    }

    @Override
    public Sequence getSequence(String sequenceId) {
        return sequences.get(sequenceId);
    }

    @Override
    public int getNextValue(String sequenceId) {
        int value = values.get(sequenceId);
        values.put(sequenceId, value + 1);
        return value;
    }

}

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public static void main(String[] args) {
        AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
        context.scan("com.example");
        SequenceDAO obj = context.getBean("SequenceDAO", SequenceDAO.class);
        System.out.println(obj.getNextValue("IT"));
        System.out.println(obj.getSequence("IT"));
    }

````````````````````````````````````````````````````````````

Exception in thread "main" java.lang.IllegalStateException: org.springframework.context.annotation.AnnotationConfigApplicationContext@4c0bc4 has not been refreshed yet
    at org.springframework.context.support.AbstractApplicationContext.assertBeanFactoryActive(AbstractApplicationContext.java:1041)
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1059)
    at com.example.SpringAnnotationsSequenceGeneratorWithDaoIntroductionApplication.main(SpringAnnotationsSequenceGeneratorWithDaoIntroductionApplication.java:14)

我是 Spring 新手，我正在学习没有注释的 Spring，所以如果有人可以告诉我这里发生了什么问题

如有任何帮助，敬请谅解。

问候

Answer 1

你的上下文init应该像这样:

ApplicationContext aContext = new AnnotationConfigApplicationContext(ConcertConfig.class);
@Configuration
@EnableAspectJAutoProxy
@ComponentScan
public class ConcertConfig {

}