Spring设值注入和构造注入(通过xml)

	4.0.0
	
		org.springframework.boot
		spring-boot-starter-parent
		2.6.7
		 
	
	com.example
	demo
	0.0.1-SNAPSHOT
	demo
	Demo project for Spring Boot
	
		1.8
	
	
		
			org.springframework.boot
			spring-boot-starter-web
		

		
			org.springframework.boot
			spring-boot-devtools
			runtime
			true
		
		
			org.projectlombok
			lombok
			true
		
		
			org.springframework.boot
			spring-boot-starter-test
			test
		
	

	
		
			
				org.springframework.boot
				spring-boot-maven-plugin
				
					
						
							org.projectlombok
							lombok
						
					
				
			
		
	

package com.example.demo.domain;

public interface IPerson {
    void sayHello();
    void drink();
}

package com.example.demo.domain;

public interface ICup {
    void fillWater();
}

package com.example.demo.domain;

public class BeerCup implements ICup{
    private String color;
    

    public String getColor() {
        return color;
    }


    public void setColor(String color) {
        this.color = color;
    }


    @Override
    public void fillWater() {
        System.out.println("使用"+this.color+"的啤酒杯子喝酒。");
        
        
    }
    
}

package com.example.demo.domain;

public class ClassCup implements ICup{
    private String color;
    

    public String getColor() {
        return color;
    }


    public void setColor(String color) {
        this.color = color;
    }


    @Override
    public void fillWater() {
        System.out.println("使用"+this.color+"的玻璃杯子喝果汁。");  
    }
    
}

package com.example.demo.domain;

public class English implements IPerson{
    private String name;
    private ICup cup;
    


    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public ICup getCup() {
        return cup;
    }

    public void setCup(ICup cup) {
        this.cup = cup;
    }

    @Override
    public void sayHello() {
        // TODO Auto-generated method stub
        System.out.println(this.name+"的母语是英语，会说英语!");
        
    }

    @Override
    public void drink() {
        // TODO Auto-generated method stub
        cup.fillWater();
        
    }
    
}

package com.example.demo.domain;

public class Russian implements IPerson{
    private String name;
    private ICup cup;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public ICup getCup() {
        return cup;
    }

    public void setCup(ICup cup) {
        this.cup = cup;
    }

    @Override
    public void sayHello() {
        // TODO Auto-generated method stub
        System.out.println(this.name+"会说俄语!");
        
    }

    @Override
    public void drink() {
        // TODO Auto-generated method stub
        cup.fillWater();
        
    }
    
}

启动函数

package com.example.demo;

import com.example.demo.domain.English;
import com.example.demo.domain.IPerson;
import com.example.demo.domain.Russian;

// import org.apache.catalina.core.ApplicationContext;
import org.springframework.beans.factory.BeanFactory;
// import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

@SpringBootApplication
public class DemoApplication {

	public static void main(String[] args) {
		//SpringApplication.run(DemoApplication.class, args);
		ApplicationContext act = new ClassPathXmlApplicationContext("applicationContext.xml");
		IPerson anyone=((BeanFactory) act).getBean("beerman",Russian.class);
		anyone.sayHello();
		anyone.drink();


		System.out.println("--------############---------");
		anyone=((BeanFactory) act).getBean("ygman",English.class);
		anyone.sayHello();
		anyone.drink();

		
	}
}

建议以设值注入为主，构造注入为辅助。
下载地址：https://download.csdn.net/download/m0_61504367/85199838