<?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"    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd"><!-- 使用set方法注入属性     singleton 单实例 默认    prototype 多实例

--><bean id="user" class="com.spring.demo1.User" scope="singleton"><!-- 注入属性值 name的属性值就是类里面定义的属性名称value设置具体值--><property name="bookname" value="程序设计"></property></bean></beans>

package com.spring.demo1;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public class TestIOC {    public static void main(String[] args) {

        //1.加载spring配置文件，根据配置创建对象        ApplicationContext context = (ApplicationContext) new ClassPathXmlApplicationContext("config.xml");        //2.得到配置创建的对象        User user=(User) context.getBean("user");//强转，引号内为配置文件中的id名        User user1=(User) context.getBean("user");        System.out.println(user);//单实例输出地址        System.out.println(user1);//多实例输出地址不一样        user.add();//方法调用    }}

package com.spring.demo1;public class User {private String bookname;//只需要构造一个set方法public void setBookname(String bookname) {this.bookname = bookname;}public void add(){System.out.println("bookname......"+bookname);}}

<?xml version="1.0" encoding="UTF-8"?>
<beansxmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:p="http://www.springframework.org/schema/p"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd"><bean id="HelloWorld" class="com.gc.action.HelloWorld"><!-- 有参构造注入 -->
<constructor-arg index="0"><value>HelloWorld1</value>
</constructor-arg>
</bean>
</beans>

package com.gc.test;import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;import com.gc.action.HelloWorld;public class TestHelloWorld {public static void main(String[] args) {ApplicationContext actx=(ApplicationContext) new ClassPathXmlApplicationContext("applicationContext.xml");HelloWorld helloworld=(HelloWorld) actx.getBean("HelloWorld");System.out.println(helloworld.getMsg());}
}

package com.gc.action;public class HelloWorld {public String msg=null;//添加构造方法实现构造注入public HelloWorld(String msg) {super();this.msg = msg;}public String getMsg() {return msg;}public void setMsg(String msg) {this.msg = msg;}}

<?xml version="1.0" encoding="UTF-8"?>
<!-- 引入p名称空间  ，最后以p结尾-->
<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"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd">
<!-- p名称空间注入 -->
<bean id="person" class="com.spring.property.Person" p:name="lucy"></bean>
</beans>

package com.spring.property;public class Person {private String name;public void setName(String name) {this.name = name;}public void test1(){System.out.println("person"+name);}
}

package com.spring.property;import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;public class Testp {public static void main(String[] args) {ApplicationContext context=new ClassPathXmlApplicationContext("config.xml");Person person=(Person) context.getBean("person");person.test1();}
}