Set List Map

<?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:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd">

    <context:annotation-config />
    <beans>
        <bean class="Factory">
            <constructor-arg ref="bus"></constructor-arg>
        </bean>

        <bean id="bus" class="Bus">
            <constructor-arg>
                <set>
                    <ref bean="person1" />
                    <ref bean="person2" />
                </set>
            </constructor-arg>
        </bean>

        <bean id="person1" class="Person">
            <constructor-arg value="xiaoming"></constructor-arg>
        </bean>

        <bean id="person2" class="Person">
            <constructor-arg value="xiaohong"></constructor-arg>
        </bean>
    </beans>

</beans>

import java.util.Set;

public class Factory {
    private Bus bus;

    public Factory() {

    }

    public Factory(Bus bus) {
        this.bus = bus;
    }

    public Bus getBus() {
        return bus;
    }
}

class Bus {
    private Set<Person> persons;

    public Bus() {

    }

    public Bus(Set<Person> persons) {
        this.persons = persons;
    }

    public Set<Person> getPersons() {
        return persons;
    }

}

class Person {
    private String name;

    public Person() {

    }

    public Person(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }
}