<?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:p="http://www.springframework.org/schema/p"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsd"><!-- ###############对象创建############### --><!-- 1. 默认无参数构造器 <bean id="user1" class="cn.itcast.b_create_obj.User"></bean>--><!-- 2. 带参数构造器 --><bean id="user2" class="cn.itcast.b_create_obj.User"><constructor-arg index="0" type="int" value="100"></constructor-arg><constructor-arg index="1" type="java.lang.String" value="Jack"></constructor-arg></bean><!-- 定义一个字符串，值是"Jack" ;  String s = new String("jack")--><bean id="str" class="java.lang.String"><constructor-arg value="Jacks"></constructor-arg></bean><bean id="user3" class="cn.itcast.b_create_obj.User"><constructor-arg index="0" type="int" value="100"></constructor-arg><constructor-arg index="1" type="java.lang.String" ref="str"></constructor-arg></bean><!-- 3. 工厂类创建对象 --><!-- # 3.1 工厂类，实例方法 --><!-- 先创建工厂 --><bean id="factory" class="cn.itcast.b_create_obj.ObjectFactory"></bean><!-- 在创建user对象，用factory方的实例方法 --><bean id="user4" factory-bean="factory" factory-method="getInstance"></bean><!-- # 3.2 工厂类： 静态方法 --><!-- class 指定的就是工厂类型factory-method  一定是工厂里面的“静态方法”--><bean id="user" class="cn.itcast.b_create_obj.ObjectFactory" factory-method="getStaticInstance"></bean></beans>      

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<!-- dao instance --><bean id="userDao" class="cn.itcast.c_property.UserDao"></bean><!-- service instance --><bean id="userService" class="cn.itcast.c_property.UserService"><property name="userDao" ref="userDao"></property></bean><!-- action instance --><bean id="userAction" class="cn.itcast.c_property.UserAction"><property name="userService" ref="userService"></property></bean>

<!-- ##############内部bean############## --><bean id="userAction" class="cn.itcast.c_property.UserAction"><property name="userService"><bean class="cn.itcast.c_property.UserService"><property name="userDao"><bean class="cn.itcast.c_property.UserDao"></bean></property></bean></property></bean>

<?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:p="http://www.springframework.org/schema/p"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsd"><!-- ###############对象属性赋值############### --><!-- 给对象属性注入值：# p 名称空间给对象的属性注入值(spring3.0以上版本才支持)--><bean id="userDao" class="cn.itcast.c_property.UserDao"></bean><bean id="userService" class="cn.itcast.c_property.UserService" p:userDao-ref="userDao"></bean><bean id="userAction" class="cn.itcast.c_property.UserAction" p:userService-ref="userService"></bean><!-- 传统的注入： <bean id="user" class="cn.itcast.c_property.User" ><property name="name" value="xxx"></property></bean>--><!-- p名称空间优化后 --><bean id="user" class="cn.itcast.c_property.User" p:name="Jack0001"></bean></beans>   

<!-- ###############自动装配############### -->  <bean id="userDao" class="cn.itcast.d_auto.UserDao"></bean>    <bean id="userService" class="cn.itcast.d_auto.UserService" autowire="byName"></bean><!-- 根据“名称”自动装配： userAction注入的属性，会去ioc容器中自动查找与属性同名的对象 --><bean id="userAction"
class="cn.itcast.d_auto.UserAction" autowire="byName"></bean>

<?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:p="http://www.springframework.org/schema/p"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsd" default-autowire="byType"><!--定义到全局不用每个节点都写了--><!-- ###############自动装配############### -->  <bean id="userDao" class="cn.itcast.d_auto.UserDao"></bean>    <bean id="userService" class="cn.itcast.d_auto.UserService"></bean><!-- 如果根据类型自动装配： 必须确保IOC容器中只有一个该类型的对象 --><bean id="userAction" class="cn.itcast.d_auto.UserAction"></bean><!--   报错： 因为上面已经有一个该类型的对象，且使用了根据类型自动装配<bean id="userService_test" class="cn.itcast.d_auto.UserService" autowire="byType"></bean>-->
</beans>