怒肝 8 个月源码，我成为了 Spring 开源贡献者

//?本文不探讨技术细节，只是为了简单说明这个问题，所以省略无关代码?
private?int?resolveConstructorArguments(String?beanName,?RootBeanDefinition?mbd,?BeanWrapper?bw,
???ConstructorArgumentValues?cargs,?ConstructorArgumentValues?resolvedValues)?{

??????//?....
??for?(Map.Entry<Integer,?ConstructorArgumentValues.ValueHolder>?entry?:?cargs.getIndexedArgumentValues().entrySet())?{
???int?index?=?entry.getKey();
???if?(index?<?0)?{
????throw?new?BeanCreationException(mbd.getResourceDescription(),?beanName,
??????"Invalid?constructor?argument?index:?"?+?index);
???}
????????????//?问题就出在这里
???if?(index?>?minNrOfArgs)?{
????minNrOfArgs?=?index?+?1;
???}
???????//?.....?

if?(index+1?>?minNrOfArgs)?{
????minNrOfArgs?=?index?+?1;
}

private?int?resolveConstructorArguments(String?beanName,?RootBeanDefinition?mbd,?BeanWrapper?bw,
???ConstructorArgumentValues?cargs,?ConstructorArgumentValues?resolvedValues)?{
??TypeConverter?customConverter?=?this.beanFactory.getCustomTypeConverter();
??//?...

??for?(Map.Entry<Integer,?ConstructorArgumentValues.ValueHolder>?entry?:?cargs.getIndexedArgumentValues().entrySet())?{
???int?index?=?entry.getKey();
???if?(index?<?0)?{
????throw?new?BeanCreationException(mbd.getResourceDescription(),?beanName,
??????"Invalid?constructor?argument?index:?"?+?index);
???}
???if?(index?>?minNrOfArgs)?{
????minNrOfArgs?=?index?+?1;
???}
???//?....
??}
//?....
?return?minNrOfArgs;
}

public?class?FactoryObject?{

?public?DmzService?getDmz(String?name,?int?age,?Date?birthDay,?OrderService?orderService)?{

?public?DmzService?getDmz(OrderService?orderService,String?name)?{

??return?new?DmzService(orderService,name);
?}

}

<?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"
????default-autowire="constructor">
?<bean?id="factoryObject"?class="com.dmz.spring.first.instantiation.service.FactoryObject"/>

?<bean?class="com.dmz.spring.first.instantiation.service.OrderService"?id="orderService"/>

?<bean?id="dmzService"?factory-bean="factoryObject"?factory-method="getDmz">
??<constructor-arg?index="1"??value="dmz"/>
?</bean>

</beans>

if?(index?>?minNrOfArgs)?{
?minNrOfArgs?=?index?+?1;
}

if?(index?+?1?>?minNrOfArgs)?{
?minNrOfArgs?=?index?+?1;
}s