Document类
package
cn.itcast.spring0909.document.spring;
public interface Document {
public void
read();
public void write();
}
DocumentManager类
package
cn.itcast.spring0909.document.spring;
/**
*
利用spring的ioc和di做到了完全的面向接口编程
*@author
Administrator
*
*/
public class
DocumentManager {
private Document document;
public
Document getDocument() {
return document;
}
public void
setDocument(Document document) {
this.document =
document;
}
public void
read(){
this.document.read();
}
public void
write(){
this.document.write();
}
}
ExcelDocument、PDFDocument、WordDocument类
package
cn.itcast.spring0909.document.spring;
public class
ExcelDocument implements
Document{
@Override
public
void read() {
// TODO Auto-generated method
stub
System.out.println("excel read");
}
@Override
public void
write() {
// TODO
Auto-generated method stub
System.out.println("excel
writer");
}
}
DocumentTest类
package
cn.itcast.spring0909.document.spring;
import org.junit.Test;
import
cn.itcast.spring0909.utils.SpringHelper;
public class
DocumentTest extends
SpringHelper{
static{
path = "cn/itcast/spring0909/document/spring/applicationContext.xml";
}
@Test
public void
test(){
DocumentManager documentManager
= (DocumentManager)context.getBean("documentManager");
documentManager.read();
}
}
<?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-2.5.xsd">
<!--
把documentManager,worddocument,exceldocument,pdfdocument -->
<bean id="documentManager" class="cn.itcast.spring0909.document.spring.DocumentManager">
<!--
document是一个接口
-->
<property name="document">
<!--
通过ref给接口赋值
-->
<ref bean="wordDocument"/>
</property>
</bean>
<bean id="wordDocument" class="cn.itcast.spring0909.document.spring.WordDocument"></bean>
<bean id="excelDocument"
class="cn.itcast.spring0909.document.spring.ExcelDocument"></bean>
<bean id="pdfDocument"
class="cn.itcast.spring0909.document.spring.PDFDocument"></bean>
</beans>
原文：http://www.cnblogs.com/wang3680/p/ca03b50c3c6cad45c9a04fc46629f657.html