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  • 怎样查看 spring IoC 容器有哪些 bean

     方法1:(可行)只能查看部分 getBeanDefinitionNames 中的Bean。

    package com.itheima.controller;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.context.ApplicationContext;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    import java.util.Arrays;
    import java.util.List;
    
    @RestController
    @RequestMapping
    public class ViewAllBeans {
    
        @Autowired
        private ApplicationContext applicationContext;
    
        @GetMapping("/beanList")
        public List<String> beanList() {
            return Arrays.asList(applicationContext.getBeanDefinitionNames());
        }
    }

     方法2:

    public static void main(String args[]) {
      ApplicationContext context=new ClassPathXmlApplicationContext("classpath:spring-applicationContext.xml");
      Object user= context.getBean("userController");
      String[] str=context.getBeanDefinitionNames();
      for (String string : str) {
        System.out.println("..."+string);
      }
      System.out.println("----"+user);
    
    }
    // REF https://blog.csdn.net/chengjunhua19890809/article/details/77981839

      

    方法3:

    
    
    import org.springframework.beans.BeansException;

    import org.springframework.beans.factory.InitializingBean;

    import org.springframework.context.ApplicationContext;

    import org.springframework.context.ApplicationContextAware;

    import org.springframework.stereotype.Component;


    public
    class SpringContextHolder implements ApplicationContextAware { private static ApplicationContext applicationContext; public void setApplicationContext(ApplicationContext applicationContext) throws BeansException { SpringContextHolder.applicationContext = applicationContext; } public static ApplicationContext getApplicationContext() { return applicationContext; } public static void printAllBeans() { String[] beans = SpringContextHolder.getApplicationContext() .getBeanDefinitionNames(); for (String beanName : beans) { Class<?> beanType = SpringContextHolder.getApplicationContext() .getType(beanName); System.out.println("BeanName:" + beanName); System.out.println("Bean的类型:" + beanType); System.out.println("Bean所在的包:" + beanType.getPackage()); System.out.println("Bean:" + SpringContextHolder.getApplicationContext().getBean( beanName)); } } }

      

    方法4:

    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.context.ApplicationContext;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
     
    import java.util.Arrays;
    import java.util.List;
     
    @RestController
    @RequestMapping
    public class BeanController {
     
        @Autowired
        private ApplicationContext applicationContext;
     
        @GetMapping("/beanList")
        public List<String> beanList() {
            return Arrays.asList(applicationContext.getBeanDefinitionNames());
        }
    }

    REF

    https://blog.csdn.net/Gabriel576282253/article/details/104826413

    https://blog.csdn.net/loongshawn/article/details/106259754

    https://blog.csdn.net/const_/article/details/100039428

    https://blog.csdn.net/long243416336/article/details/80590032

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  • 原文地址:https://www.cnblogs.com/emanlee/p/15758454.html
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