Spring中使用FactoryBean配置注入Bean

spring通过FactoryBean配置可以将第三方框架整合到Spring中来，FactoryBean配置如下：
 

1. 写一个用于注于的实体类，如User,并对这个类写一个实现FactoryBean的中间类（UserFactoryBean）
   User类

   /**
   *Description:
   *author: ljd
   *@date 2024年7月2日 
   *@version 1.0 
   */
   package test.spring.model;
   
   public class User {
   	private int id;
   	private String name;
   
   	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 User(int id, String name) {
   		super();
   		this.id = id;
   		this.name = name;
   	}
   
   	@Override
   	public String toString() {
   		return "User [id=" + id + ", name=" + name + "]";
   	}
   
   	public User() {
   		super();
   	}
   
   }
   

   UserFactoryBean类
    

   /**
   *Description:
   *author: ljd
   *@date 2024年7月3日 
   *@version 1.0 
   */
   package test.spring.model;
   
   import org.springframework.beans.factory.FactoryBean;
   
   public class UserFactoryBean implements FactoryBean<User> {
   	private String type;
   	
   	public UserFactoryBean(String type) {
   		super();
   		this.type = type;
   	}
   	//返回Bean对象
   	@Override
   	public User getObject() throws Exception {
   		return new User(1,type);
   	}
   	//返回Bean类型
   	@Override
   	public Class<?> getObjectType() {
   		// TODO Auto-generated method stub
   		return User.class;
   	}
   
   }

2. 在Spring配置文件中配置｜

   <bean id="zs" class="test.spring.model.UserFactoryBean">
   		<constructor-arg value="zs"></constructor-arg>
   	</bean>

3. 测试结果

   package testSpring;
   
   import org.junit.Test;
   import org.springframework.context.ApplicationContext;
   import org.springframework.context.support.ClassPathXmlApplicationContext;
   
   import test.spring.model.User;
   
   public class TestSpring {
   	@Test
   	public void testUser() {
   		ApplicationContext ac=new ClassPathXmlApplicationContext("applicationContext.xml");
   		User user=(User) ac.getBean("zs");
   		System.out.println(user);
   	}
   
   }