Idea2019搭建Spring框架环境demo

痛定思痛。 2024-04-19 11:07 72阅读 0赞

#### 1、创建项目 ####

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#### 2、写几个demo稍微对Spring的作用进行初步了解 ####

1、写一个实体类

/**
     * 实体类
     * @author Xuan
     * @date 2019/9/17 16:32
     */
    public class Xuan {
        private String name;
    
        public String getName() {
            return name;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    }

#### 3、IOC是Inversion of Control的缩写，多数书籍翻译成“控制反转”，还有些书籍翻译成为“控制反向”或者“控制倒置”。 ####

#### 4、不用Spring的IOC容器 ####

/**
     * @author Xuan
     * @date 2019/9/17 16:33
     */
    public class TestMain {
        public static void main(String[] args) {
            Xuan xuan = new Xuan();
            xuan.setName("测试");
            System.out.println(xuan.getName());
        }
    }

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#### 5、使用SpringIoc的容器 ####

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#### 6、取出存在IOC容器里面的具体bean ####

import org.springframework.context.ApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    /**
     * @author Xuan
     * @date 2019/9/17 16:33
     */
    public class TestMain {
        public static void main(String[] args) {
    //        Xuan xuan = new Xuan();
    //        xuan.setName("测试");
    //        System.out.println(xuan.getName());
            ApplicationContext applicationContext = new ClassPathXmlApplicationContext("spring-config.xml");
            Xuan xuan =  (Xuan)applicationContext.getBean("xuan");
            System.out.println(xuan.getName());
        }
    }

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#### 7、简单的注入过程解释 ####

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#### 8、输出Spring的IOC容器里所有已经存在的bean ####

import org.springframework.context.ApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    /**
     * @author Xuan
     * @date 2019/9/17 16:33
     */
    public class TestMain {
        public static void main(String[] args) {
    //        Xuan xuan = new Xuan();
    //        xuan.setName("测试");
    //        System.out.println(xuan.getName());
            ApplicationContext applicationContext = new ClassPathXmlApplicationContext("spring-config.xml");
    //        Xuan xuan =  (Xuan)applicationContext.getBean("xuan");
    //        System.out.println(xuan.getName());
            String [] str = applicationContext.getBeanDefinitionNames();
            for (String x:str) {
                System.out.println("注入的"+x);
            }
        }
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNzQxODg0_size_16_color_FFFFFF_t_70 10]

#### 9、遇到困难可以评论（有信必回）小轩微信tangchenxuan1999 ####

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