Spring学习笔记2——创建Product对象，并在其中注入一个Category对象

第一步：创建Product类。在Product类中有对Category对象的set和get方法

 package com.spring.cate;

 public class Product {
     private int id;
     private String name ;

     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;
     }

     public void setCategory(Category category) {
         this.category = category;
     }
 }

第二步：在创建Product的时候注入一个Category对象

注意，这里要使用ref来注入另一个对象

 <?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.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.0.xsd">

   <context:annotation-config/>
     <bean name="category" class="com.spring.cate.Category">
         <property name="name" value="category 3333" />
     </bean>
     <bean name="product" class="com.spring.cate.Product">
         <property name="name" value="product 3333" />
         <property name="category" ref="category" />
     </bean>

    <!--<context:component-scan base-package="com.spring.cate"/>-->
 </beans>

第三步：测试

 package com.spring.test;

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

 import com.spring.cate.Product;

 public class TestSpring {

     public static void main(String[] args) {
         // TODO Auto-generated method stub
         ApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "applicationContext.xml" });
         Product p = (Product) context.getBean("product");
         System.out.println(p.getName());
         System.out.println(p.getCategory().getName());
     }

 }