java - context.getBean 抛出 NoSuchBeanDefinitionException

Question

我有一个 Spring Boot 应用程序。当我调用 context.getBean(MyController.class) 时，它工作正常。当我调用 context.getBean("MyController") 或 context.getBean("com.MyController") 时，会抛出 NoSuchBeanDefinitionException 。如何获取带有名称的 bean？

申请

package com;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;

@SpringBootApplication
public class Application {

    public static void main(String[] args) throws Exception {
        ConfigurableApplicationContext context = SpringApplication.run(Application.class, args);
        // MyController myController = (MyController) context.getBean("com.MyController"); NoSuchBeanDefinitionException
        // MyController myController= (MyController) context.getBean("MyController"); NoSuchBeanDefinitionException
        MyController myController = (MyController) context.getBean(MyController.class); // works fine
        System.out.println(myService);
    }

}

Controller :

package com;

import org.springframework.stereotype.Controller;

@Controller
public class MyController {
}

Answer 1

您还可以在 MyController 类中定义 Controller 名称，如下所示，

@Controller(value="MyController")
public class MyController {
}