标签：接口 2.2.3 version 方法 inf ext getc XML xmlns
1.导包
<!--beans-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.2.3.RELEASE</version>
</dependency>
<!--context-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.2.2.RELEASE</version>
</dependency>
2.创建类和接口
2.1 颜色
2.1.1ColorInk 类中
public class ColorInk implements Ink {
public String getColor() {
return "红";
}
}
2.1.2 GrayInk 类中
public class GrayInk implements Ink {
public String getColor() {
return "白";
}
}
2.1.3 Ink 接口中
public interface Ink {
//获取颜色的方法
public String getColor();
}
2.2 纸张
2.2.1 A4Paper 类中
public class A4Paper implements Paper {
public String getPaper() {
return "A4纸";
}
}
2.2.2 B5Paper 类中
public class B5Paper implements Paper {
public String getPaper() {
return "B5纸";
}
}
2.2.3 Paper接口中
public interface Paper {
public String getPaper();
}
2.3 Printer
public class Printer {
private Ink ink;
private Paper paper;
public void print(){
System.out.println("用 "+ink.getColor()+" 颜色的墨盒在 "+paper.getPaper()+" 上打印出来 老原你敢下课吗???");
}
public Ink getInk() {
return ink;
}
public void setInk(Ink ink) {
this.ink = ink;
}
public Paper getPaper() {
return paper;
}
public void setPaper(Paper paper) {
this.paper = paper;
}
}
3.applicationContext.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
<!--IOC-->
<bean id="HappyService" class="cn.bdqn.service.HappyService">
<!--DI依赖注入-->
<property name="info" value="Spring"></property>
</bean>
<!--打印机-->
<bean id="colorInk" class="cn.bdqn.printer.ink.ColorInk"></bean>
<bean id="grayInk" class="cn.bdqn.printer.ink.GrayInk"></bean>
<bean id="b5Paper" class="cn.bdqn.printer.paper.B5Paper"></bean>
<bean id="a4Paper" class="cn.bdqn.printer.paper.A4Paper"></bean>
<bean id="pinter" class="cn.bdqn.printer.print.Printer">
<property name="ink" ref="colorInk"></property>
<property name="paper" ref="a4Paper"></property>
</bean>
</beans>
4.测试
@Test
//打印机
public void test02(){
ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContext.xml");
Printer pp= (Printer)ctx.getBean("pinter");
pp.print();
}
标签：接口 2.2.3 version 方法 inf ext getc XML xmlns
原文地址：http://www.cnblogs.com/s1297-lgy/p/7398794.html
