Spring之使用工厂方法配置Bean-白红宇

Spring之使用工厂方法配置Bean

阅读量：4575 次

发布时间：2019-06-08

本文共 1569 字，大约阅读时间需要 5 分钟。

public class Car {        private String brand;    private double price;            public Car(String brand, double price) {        this.brand = brand;        this.price = price;    }    public String getBrand() {        return brand;    }    public void setBrand(String brand) {        this.brand = brand;    }    public double getPrice() {        return price;    }    public void setPrice(double price) {        this.price = price;    }    @Override    public String toString() {        return "Car [brand=" + brand + ", price=" + price + "]";    }}

import java.util.HashMap;import java.util.Map;/** * 静态工厂方法：直接调用某一个类的静态方法就可以返回bean的实例 * @author zhang * */public class StaticCarFactory {    private static Map
     
       map = new HashMap
      
       ();    static{        map.put("Audi",new Car("Audi",30000));        map.put("Ford",new Car("Ford",20000));    }        public static Car getCar(String name){        return map.get(name);    }}

import java.util.HashMap;import java.util.Map;public class InstanceCarFactory {        private Map
     
       cars = null;        public InstanceCarFactory() {        cars = new HashMap
      
       ();        cars.put("ford",new Car("ford",20000));        cars.put("audi",new Car("audi",30000));    }        public Car getCar(String name){        return cars.get(name);    }}