Spring 3.x企业应用开发实战(6)----BeanFactory

BeanFactory是一个类工厂，是类的通用工厂。不多说，直接进入BeanFactory的使用:

首先建一个Bean类，Car.java

 

package com.techman.reflect;

public class Car
{
    private String brand;
    private String color;
    private int maxSpeed;
    public String getBrand() {
        return brand;
    }
    public void setBrand(String brand) {
        this.brand = brand;
    }
    public String getColor() {
        return color;
    }
    public void setColor(String color) {
        this.color = color;
    }
    public int getMaxSpeed() {
        return maxSpeed;
    }
    public void setMaxSpeed(int maxSpeed) {
        this.maxSpeed = maxSpeed;
    }

    public Car(){

    }

    public Car(String brand,String color,int maxSpeed){
        this.brand=brand;
        this.color=color;
        this.maxSpeed=maxSpeed;
    }

    public void introduce()
    {
        System.out.println("Brand is "+brand+" Color is "+color+" Max Speed is "+maxSpeed);
    }
}

配置一个beans.xml文件来指明bean的位置。

 

 

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"

    xsi:schemaLocation="http://www.springframework.org/schema/beans
                        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
                        http://www.springframework.org/schema/context
                        http://www.springframework.org/schema/context/spring-context-3.0.xsd">
    <bean id="car1" class="com.techman.reflect.Car" p:brand="宝马X7" p:color="白色" p:maxSpeed="350"/>
</beans>

然后在类中实现Bean的初始化和调用。

 

BeanFactoryTest.java

 

package com.techman.resource;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;

import com.techman.reflect.Car;

public class BeanFactoryTest
{
    public static void main(String []args)throws Throwable
    {
        ResourcePatternResolver resolver=new PathMatchingResourcePatternResolver();
        Resource res=resolver.getResource("classpath:com/techman/resource/beans.xml");
        BeanFactory bf=new XmlBeanFactory(res);
        System.out.println("Init BeanFactory.");

        Car car=bf.getBean("car1",Car.class);

        car.introduce();

        System.out.println("Car Bean is ready for use!");
    }
}

结果为:

 

Init BeanFactory.
Brand is 宝马X7 Color is 白色 Max Speed is 350
Car Bean is ready for use!