第一步：打开myeclipse，建个web工程，名字叫spring_test
第二步：添加jar包
右击工程名，myeclipse –》add spring。。。
选择默认的core包就行了。
注意：如果以上操作步骤完成，你的src下没有applicationContext.xml，说名你的环境没搭好，重新建个项目，重复以上2步骤。
如果src 目录下有applicationContext.xml文件，那下面就开始写代码了：
首先建三个包
1.org. interfaces
2.org. interfaces.impl
3.org.test
4.在org. interfaces 写2个接口
package org.interfaces;
public interface Food {
public String eat();
}
package org.interfaces;
public interface Person {
public void eatFood();
}
在org. interfaces.impl这里写实现的类
package org.interfaces.impl;
import org.interfaces.Food;
public class Apple implements Food {
public String eat() {
return "正在吃苹果。。。";
}
}
package org.interfaces.impl;
import org.interfaces.Food;
import org.interfaces.Person;
public class Man implements Person {
private Food food;
public Food getFood() {
return food;
}
public void setFood(Food food) {
this.food = food;
}
public void eatFood() {
System.out.println(food.eat());
}
}
package org.interfaces.impl;
import org.interfaces.Food;
public class Orange implements Food {
public String eat() {
return "正在吃orange。。。";
}
}
在org.test包里写测试类
package org.interfaces.impl;
import org.interfaces.Person;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;
public class Test {
public static void main(String[] args) {
//当applicationContext.xml在src下时间使用
//ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
// Person p =(Person)context.getBean("man");
// p.eatFood();
//在指定路径上applicationContext.xml
ApplicationContext context = new FileSystemXmlApplicationContext("/WebRoot/WEB-INF/applicationContext.xml");
Person p =(Person)context.getBean("man");
p.eatFood();
}
}