AnnotationConfigApplicationContext 尚未刷新 - 怎么了？

Question

我最基本的 spring 应用程序停止工作，我不明白发生了什么。 pom.xml:

<properties>
    <spring.version>4.1.1.RELEASE</spring.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${spring.version}</version>
    </dependency>
</dependencies>

配置class:

@Configuration
public class MyConfig {

@Bean
public HelloWorld helloWorld() {
         return new HelloWorld();
    }
}

豆子class:

public class HelloWorld {
    private String message;

    public void setMessage(String message) {
        this.message = message;
    }
    public String getMessage() {
         return message;
    }
}

申请入口：

public class MainApp {
public static void main(String[] args) {
    AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
    ctx.register(MyConfig.class);
    HelloWorld bean = ctx.getBean(HelloWorld.class);
    bean.setMessage("ladjfaj");
    System.out.println(bean.getMessage());
}
}

我遇到了一个错误

Exception in thread "main" java.lang.IllegalStateException: org.springframework.context.annotation.AnnotationConfigApplicationContext@6ebf8cf5 has not been refreshed yet at org.springframework.context.support.AbstractApplicationContext.assertBeanFactoryActive(AbstractApplicationContext.java:943) at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:967) at com.nikolas.config.MainApp.main(MainApp.java:12)

Answer 1

你必须先调用ctx.refresh()才能调用ctx.getBean(HelloWorld.class);

Answer 2

如果您不想显式调用 ctx.refresh()，只需像这样初始化 ApplicationContext： new AnnotationConfigApplicationContext(MyConfig.class)，然后配置将被隐式注册和刷新

Answer 3

以防万一有人遇到类似问题并且不能直接与上面的示例相关，这可能会有所帮助：

我运行当我的存储库之一位于

中包含的文件夹之外时，我遇到了问题

@EnableJpaRepositories(basePackages = {"com.myproject.repositores"})

导致第一个异常的原因：

Description: Field profileRepository in com.myproject.featurepackage.config.ProfileService required a bean of type 'com.myproject.featurepackage.ProfileRepository' that could not be found. The injection point has the following annotations: - @org.springframework.beans.factory.annotation.Autowired(required=true)

当我之后访问ApplicationContext实例化一个bean时，我运行进入错误

org.springframework.context.annotation.AnnotationConfigApplicationContext@4983159f has not been refreshed yet

AnnotationConfigApplicationContext 尚未刷新 - 怎么了？

AnnotationConfigApplicationContext has not been refreshed yet - what's wrong?

java

configuration

spring