自己动手实现IOC和MVC（六）

最新推荐文章于 2025-08-23 20:56:03 发布

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#ioc #mvc #prototype #class #action #测试

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本文通过模拟UserDao、UserService和UserAction三个层次的操作，展示了IoC容器的使用过程。从数据库层到业务层再到Action层，详细说明了依赖注入的过程及其实现方式。

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下面来对现在ioc做的简单测试

UserDao.java 模拟数据库的操作

package com.ajun.test.dao;

import com.ajunframework.beans.annotation.Dao;

@Dao
public class UserDao {

	public void add(){
		System.out.println("UserDao's add method was called");
	}
}

UserService.java模拟业务层的操作

package com.ajun.test.service;


import com.ajun.test.dao.UserDao;
import com.ajunframework.beans.annotation.Property;
import com.ajunframework.beans.annotation.Service;

@Service
public class UserService {

	@Property
	private UserDao userDao;//注入属性

	public void add(){
		System.out.println("UserService's add method was called");
		userDao.add();
			
	}
	public UserDao getUserDao() {
		return userDao;
	}

	public void setUserDao(UserDao userDao) {
		this.userDao = userDao;
	}
	
	
}

UserAction.java模拟action层得操作

package com.ajun.test.action;

import com.ajun.test.service.UserService;
import com.ajunframework.beans.annotation.Action;
import com.ajunframework.beans.annotation.Property;

@Action
public class UserAction {

	@Property
	private UserService userService;//注入属性
	
	public void add(){
		System.out.println("UserAction's add method was called");
		userService.add();
			
	}
	
	
	public UserService getUserService() {
		return userService;
	}
	public void setUserService(UserService userService) {
		this.userService = userService;
	}
	
	
}

下面是测试方法

package com.ajun.test;

import com.ajun.test.action.UserAction;
import com.ajunframework.beans.applicationContext.AnnotationClassPathApplicationContext;
import com.ajunframework.beans.applicationContext.ClassPathApplicationContext;
import com.ajunframework.beans.factory.AnnotationBeanFactory;

public class Test {

	public static void main(String [] ag){
		ClassPathApplicationContext cx = 
			AnnotationClassPathApplicationContext.getAnnotationClassPathApplicationContext();
		cx.init();
		UserAction action = AnnotationBeanFactory.getBeanFactory().getBean("userAction",UserAction.class);
		action.add();
	}
}

打印结果：

UserAction's add method was called
UserService's add method was called
UserDao's add method was called

ioc这个project只是给大家提供个思路而已，现在ioc只是实现singleton 而没有实现prototype ，如果大家有思路，可以讨论一下，肯定是会用到prototype模式的。

下一节我会给大家mvc的实现