package com.hanqi.test; public class Car { private String carNumber; public String getCarNumber() { return carNumber; } public Car() { super(); } public Car(String carNumber) { super(); this.carNumber = carNumber; } @Override public String toString() { return "Car [carNumber=" + carNumber + "]"; } public void setCarNumber(String carNumber) { this.carNumber = carNumber; } }
package com.hanqi.test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class TestPerson { public static void main(String[] args) { // TODO 自动生成的方法存根 //1加载容器 ApplicationContext ac=new ClassPathXmlApplicationContext("abc.xml"); //2从容其中获取对象 Person p1=(Person)ac.getBean("p1"); System.out.println(p1); Person p2=(Person)ac.getBean("p2"); System.out.println(p2); Person p3=(Person)ac.getBean("p3"); System.out.println(p3); Person p5=(Person)ac.getBean("p5"); System.out.println(p5); Person p6=(Person)ac.getBean("p6"); System.out.println(p6); Person p6_1=(Person)ac.getBean("p6"); System.out.println(p6_1); if(p6==p6_1) { System.out.println("asd"); } Person p8=(Person)ac.getBean("p8"); System.out.println(p8); } }
xml
<?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" xmlns:util="http://www.springframework.org/schema/util" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd"> <bean id="car1" class="com.hanqi.test.Car"> <property name="carNumber" value="lucc550"></property> </bean> <bean id="p1" class="com.hanqi.test.Person"> <constructor-arg name="name" value="zhangsan"></constructor-arg> <constructor-arg name="age" value="30"></constructor-arg> <property name="car" ref="car1"></property> <property name="bankcards"> <list> <value>1234</value> <value>2234</value> <value>3234</value> </list> </property> </bean> <util:list id="card1"> <value>123</value> <value>123</value> <value>123</value> </util:list> <!-- 使用p标签 --> <bean id="p2" class="com.hanqi.test.Person" p:name="李四" p:age="20" p:car-ref="car1" p:bankcards-ref="card1"></bean> <!-- 自动装配 --> <bean id="p3" class="com.hanqi.test.Person" autowire="byType"></bean> <bean id="p5" parent="p1" p:name="小三" p:age="18"></bean> <!-- 定义模板 ,只能被继承,不能被外部使用--> <bean id="m1" class="com.hanqi.test.Person" p:name="默认" abstract="true" p:age="20" p:car-ref="car1" p:bankcards-ref="card1"></bean> <bean id="p6" parent="m1" p:name="小四" p:age="24"></bean> <!-- 默认是单例的 --> <bean id="p7" parent="m1" scope="prototype" p:name="小四" p:age="24"></bean> <!-- 加载外部配置文件 --> <context:property-placeholder location="classpath:person.properties"/> <bean id="p8" class="com.hanqi.test.Person" p:name="${name}" p:age="${age}"> </bean> </beans>
package com.hanqi.test; import java.util.List; public class Person { private String name; private int age; private List<String> bankcards; private Car car; public Person() { super(); System.out.println("person被实例化了"); } public Person(String name, int age) { super(); this.name = name; this.age = age; } @Override public String toString() { return "Person [name=" + name + ", age=" + age + ", bankcards=" + bankcards + ", car=" + car + "]"; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public List<String> getBankcards() { return bankcards; } public void setBankcards(List<String> bankcards) { this.bankcards = bankcards; } public Car getCar() { return car; } public void setCar(Car car) { this.car = car; } }
外部配置文件 person.properties
name=tom age=20