package com.how2java.pojo;import org.springframework.beans.factory.annotation.Autowired;public class Product {private int id;private String name;@Autowired
//  等价于 @Resource(name="c")private Category category;public int getId() {return id;}public void setId(int id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public Category getCategory() {return category;}
// @Autowiredpublic void setCategory(Category category) {this.category = category;}
}

--------------------Category类-----------------

package com.how2java.pojo;

public class Category {

public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
private int id;
private String name;
}

--------------------------
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="
   http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsdhttp://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsdhttp://www.springframework.org/schema/context      http://www.springframework.org/schema/context/spring-context-3.0.xsd"><context:annotation-config/>  //使用注解<bean name="c" class="com.how2java.pojo.Category"><property name="name" value="category 1" /></bean><bean name="p" class="com.how2java.pojo.Product"><property name="name" value="product1" />
<!--         <property name="category" ref="c" /> --> //已经注解     @Resource</bean></beans>

-----------------------

package com.how2java.test;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.how2java.pojo.Product;

public class TestSpring {

public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "applicationContext.xml" });
Product p = (Product) context.getBean("p");
System.out.println(p.getName());
System.out.println(p.getCategory().getName());
}
}