spring IoC编程实例

配置文件

/SpringHelloWorld/src/applicationContext.xml

1. 代码
2. xml version="1.0" encoding="UTF-8"?>
3. <beans
4. xmlns="http://www.springframework.org/schema/beans"
5. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
6. xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">
7. <bean id="greetingService" class="com.qdu.sun.spring.HelloWorld">
8. <constructor-arg>
9. <value type="java.lang.String">Welcome!value>
10. constructor-arg>
11. bean>beans>

SpringTest.java

1. 代码
2. package com.qdu.sun.spring;
3. import org.springframework.beans.factory.BeanFactory;
4. import org.springframework.beans.factory.xml.XmlBeanFactory;
5. import org.springframework.core.io.ClassPathResource;
6. public class SpringTest {
7. public static void main( String[] args ){
8. BeanFactory factory = new XmlBeanFactory( new ClassPathResource("applicationContext.xml") );
9. HelloWorld gc = (HelloWorld)factory.getBean("greetingService");
10. gc.sayGreeting();
11. }
12. }

HelloWorld.java

1. 代码
2. package com.qdu.sun.spring;
3. public class HelloWorld {
4. private String greeting;
5. public HelloWorld(){
6. }
7. public HelloWorld( String greeting ){
8. this.greeting = greeting;
9. }
10. public void sayGreeting(){
11. System.out.println( greeting );
12. }
13. public void setGreeting( String greeting ){
14. this.greeting = greeting;
15. }
16. }