Spring實現無需注解實現自動注入

xml配置

過程：設置自動裝配的包-->使用include-filter過濾type選擇為regex為正則表達式-->expression是表達是式也就是限制條件

<?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">
    <!-- 用於自動裝配 -->
    <context:component-scan base-package="cn.lonecloud">
        <!-- 包含某個包下的Dao層type 類型 regex表示正則表達式 expression 需要設置的限制條件 -->
        <!-- 使用這個的表示的包下的某些符合該表達式的Dao層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.*"/>
        <!-- 用於配置在該類型下的類將不被Spring容器注冊 -->
        <context:exclude-filter type="regex" expression="cn.lonecloud.service.TestService"/>
    </context:component-scan>

</beans>

 

Dao層

package cn.lonecloud.dao;

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

 

Service層

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層

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();
    }
}