Spring实现无需注解实现自动注入

xml配置

过程：设置自动装配的包-->使用include-filter过滤type选择为regex为正则表达式-->expression是表达是式也就是限制条件

<?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:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd">
    <!-- 用于自动装配 -->
    <context:component-scan base-package="cn.lonecloud">
        <!-- 包含某个包下的Dao层type 类型 regex表示正则表达式 expression 需要设置的限制条件 -->
        <!-- 使用这个的表示的包下的某些符合该表达式的Dao层可以不用使用注解即可直接使用 -->
        <context:include-filter type="regex" expression="cn.lonecloud.dao.*Dao.*"/>
        <context:include-filter type="regex" expression="cn.lonecloud.service.*Service.*"/>
        <!-- 用于配置在该类型下的类将不被Spring容器注册 -->
        <context:exclude-filter type="regex" expression="cn.lonecloud.service.TestService"/>
    </context:component-scan>

</beans>

Dao层

package cn.lonecloud.dao;

public class TestDao {
    public void Test01() {
        System.out.println("Dao");
    }
}

Service层

package cn.lonecloud.service;

import org.springframework.beans.factory.annotation.Autowired;

import cn.lonecloud.dao.TestDao;

public class TestService {
    
    @Autowired
    TestDao testDao;
    
    public void Test01(){
        testDao.Test01();
    }
}

Test层

package cn.lonecloud.test;

import org.junit.Before;
import org.junit.Test;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import cn.lonecloud.service.TestService;

public class TestMain {
    ClassPathXmlApplicationContext xmlApplicationContext=null;
    @Before
    public void init(){
        xmlApplicationContext=new ClassPathXmlApplicationContext("applicationContext.xml");
    }
    @Test
    public void Test01(){
        TestService testService=xmlApplicationContext.getBean(TestService.class);
        testService.Test01();
    }
}