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;    }// @Autowired    public 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;

}

--------------------------
     
           
        //使用注解    
              
           
          
              
       
        //已经注解     @Resource    
        
      -----------------------

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());

}

}