spring 的以来注入的基本注入（IOC）的beans配置。

spring的控制反转（IOC）就是说以来注入。现在是我自己总结的基本依赖注入。基本依赖注入：1.属性注入  2.构造器注入  3.工厂注入

1.基本注入的beans.xml中的配置：已People类为例子

<bean id="people" class="com.java.model.People">

    <property name="id" value="1"></property>

    <property name="name" value="老大"></property>

    <property name="age" value="11"></property>

</bean>

2.构造注入的bean.xml中的配置：用前必须要有构造器。

1类型构造

<bean id="people2" class="com.java.model.People">

    <constractor-arg type="int" value="2"></constractor-arg>

    <constractor-arg type="String" value="老二"></constractor-arg>

    <constractor-arg type="int" value="22"></constractor-arg>

</bean>

2index构造  要从0开始

<bean id="people3" class="com.java.model.People">

    <constractor-arg index="0" value="3"></constractor-arg>

    <constractor-arg index="1" value="老三"></constractor-arg>

    <constractor-arg index="2" value="33"></constractor-arg>

</bean>

3类型和index构造混着用

<bean id="people4" class="com.java.model.People">

    <constractor-arg type="int" index="0" value="4"></constractor-arg>

    <constractor-arg type="String" index="1" value="老四"></constractor-arg>

    <constractor-arg type="int" index="2" value="44"></constractor-arg>

</bean>

3. 工厂注入：(非静态注入，静态注入)创建PeopleFactory类,有创建人的方法

public  People createPeople()｛

           People people= new People();

           people.setId(5);

           people.setName("老五")；

           people.setAge(55);

           return people;

｝

非静态注入:

<bean id="peopleFactory" class="com.java.factory.PeopleFactory"></bean>

<bean id="people5" factory-bean="peopleFactory" factory-method="createPeople"></bean>

静态注入：在工厂类里要写静态的方法

public  static People createPeople2()｛

           People people= new People();

           people.setId(6);

           people.setName("老六")；

           people.setAge(66);

           return people;

｝

<bean people id="people6" class="com.java.factory.PeopleFactory"

 factory-method="createPeople2"></bean>