聊聊程序-Spring IOC之XML实现篇

Posted 2021-03-30 小韩聊程序

Person_constructor.java

public class Person_constructor { String name; int age; PC pc; Person_constructor(){} public Person_constructor(String name, int age, PC pc){ this.name = name; this.age = age; this.pc = pc; } @Override public String toString() { return "Person_constructor{" + "name='" + name + '\'' + ", age=" + age + ", pc=" + pc + '}'; }}
class PC{ String msg = "pc";}

Person_set.java

public class Person_set { String name; int age; PS ps; public void setName(String name) { this.name = name; } public void setAge(int age) { this.age = age; } public void setPs(PS ps) { this.ps = ps; }
 @Override public String toString() { return "Person_set{" + "name='" + name + '\'' + ", age=" + age + ", ps=" + ps + '}'; }}
class PS{ String msg = "ps";}

spring.xml

<!-- XML2IOC - 构造注入和set注入 --><bean id="pc" class="cn.shh.test.maven_ssm.module.ioc.xml2ioc.PC"/><bean id="person_constructor" class="cn.shh.test.maven_ssm.module.ioc.xml2ioc.Person_constructor" scope="singleton" > <constructor-arg index="0" name="name" type="java.lang.String" value="八戒"/> <constructor-arg index="1" name="age" type="int" value="30"/> <constructor-arg index="2" name="pc" ref="pc"/></bean><bean id="ps" class="cn.shh.test.maven_ssm.module.ioc.xml2ioc.PS" /><bean id="person_set" class="cn.shh.test.maven_ssm.module.ioc.xml2ioc.Person_set" scope="singleton" > <property name="name" value="悟空"/> <property name="age" value="30"/> <property name="ps" ref="ps"/></bean>

App.java

public class App { public static void main(String[] args) {//        String springXmlLocation = "D:\\maven_ssm\\src\\main\\resources\\spring.xml";// ApplicationContext fsContext = new FileSystemXmlApplicationContext(springXmlLocation);
        ApplicationContext cpContext = new ClassPathXmlApplicationContext("spring.xml"); Person_constructor pc = (Person_constructor) cpContext.getBean("person_constructor"); System.out.println(pc.toString());;
 Person_set ps = (Person_set) cpContext.getBean("person_set"); System.out.println(ps.toString());; }}