Spring注解驱动开发(1):容器

矫情吗；* 2022-05-13 14:44 258阅读 0赞

### 核心容器: ###

#### Demo: ####

![在这里插入图片描述][70]

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    	<modelVersion>4.0.0</modelVersion>
    	<groupId>com.zhagndi</groupId>
    	<artifactId>spring-annotation</artifactId>
    	<version>0.0.1-SNAPSHOT</version>
    
    	<dependencies>
    		
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-context</artifactId>
    			<version>4.3.12.RELEASE</version>
    		</dependency>
    
    
    	</dependencies>
    </project>

beans.xml

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
    	
    	<bean id="Person" class="com.zhangdi.bean.Person">
    		<property name="age" value="11"></property>
    		<property name="name" value="zhangsan"></property>
    	</bean>
    </beans>

Person:

package com.zhangdi.bean;
    
    public class Person { 
    	private String name;
    	private Integer age;
    
    	
    
    	public Person() { 
    		super();
    		// TODO Auto-generated constructor stub
    	}
    
    	public Person(String name, Integer age) { 
    		super();
    		this.name = name;
    		this.age = age;
    	}
    
    	public String getName() { 
    		return name;
    	}
    
    	public void setName(String name) { 
    		this.name = name;
    	}
    
    	public Integer getAge() { 
    		return age;
    	}
    
    	public void setAge(Integer age) { 
    		this.age = age;
    	}
    	@Override
    	public String toString() { 
    		return "Person [name=" + name + ", age=" + age + "]";
    	}
    
    }

MainConfig.java:

package com.zhangdi.config;
    
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    
    import com.zhangdi.bean.Person;
    
    /** * @author 张 迪 * */
    @Configuration
    public class MainConfig { 
    	
    	@Bean("person")
    	public Person person() { 
    		return new Person("lisi",20);
    	}
    }

MainTest.java:

package com.zhangdi;
    
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.annotation.AnnotationConfigApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    import com.zhangdi.bean.Person;
    import com.zhangdi.config.MainConfig;
    
    public class MainTest { 
    	@SuppressWarnings("resource")
    	public static void main(String[] args) { 
    		// TODO Auto-generated constructor stub
    // ApplicationContext applicationContext = new ClassPathXmlApplicationContext("beans.xml");
    // Object bean = applicationContext.getBean("Person");
    // System.out.println(bean);
    		
    		ApplicationContext applicationContext = new AnnotationConfigApplicationContext(MainConfig.class);
    		Person bean = applicationContext.getBean(Person.class);
    		System.out.println(bean);
    		String[] beanNamesForType = applicationContext.getBeanNamesForType(Person.class);
    		for (String name : beanNamesForType) { 
    			System.out.println(name);
    		}
    		
    	}
    
    }

![在这里插入图片描述][70 1]

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[70]: /images/20220504/c0f9f9f1cefa4e0d886a32c2bb43d5b2.png
[70 1]: /images/20220504/b19c936518d244789ee029519acad16f.png