大神来回答，Spring是基于工厂模式的，如何搭建工厂模式呢

大神们，你们在哪里

abstract Class BWM{
function __construct(String type) {

}
}
Class BWM320 extends BWM{
function __construct(“320”) {

}
}
Class BMW523 extends BWM{
function __construc(“523”){

}
}

===========================

interface FactoryBMW {
function createBMW();
}


class FactoryBWM320 implements FactoryBMW {
function createBMW(type){
return new BWM320();
}

}


class FactoryBWM523 implements FactoryBMW {
function createBMW(type){
return new BMW523();
}
}

=========================

class Customer {
private BMW;
function getBMW(type){
switch (type) {
case 320:
BWM320 = new FactoryBWM320();
return BWM320;
case 523:
BWM523 = new FactoryBWM523();

}

}
}

我。。知。。道 加。。我。。私。。聊