ecplsie web项目报错打不开applicationContext.xml文件

问题遇到的现象和发生背景

学习mybatis进行连接数据库练习测试，照着敲完代码后，就一直报错，下面还有一行报错找不到mapper.xml文件，修改了一番后又显示打不来applicationContext.xml文件

问题相关代码，请勿粘贴截图

applicationContext.xml文件内容

<?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:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx" 
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/tx 
    http://www.springframework.org/schema/tx/spring-tx.xsd
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/aop 
    http://www.springframework.org/schema/aop/spring-aop.xsd">
       <!-- 扫描包中的注解 -->
    <context:component-scan base-package="controller"/>
    <context:component-scan base-package="test"/> 
       <!-- 配置数据源 -->
    <bean id="dataSource"  class="org.apache.commons.dbcp2.BasicDataSource">
        <!--数据库驱动 -->
        <property name="driverClassName" value="com.mysql.jdbc.Driver" />
        <!--连接数据库的url -->
        <property name="url" value="jdbc:mysql://localhost:3306/ssm?characterEncoding=utf-8" />
        <!--连接数据库的用户名 -->
        <property name="username" value="root" />
        <!--连接数据库的密码 -->
        <property name="password" value="root@LC6" />
    </bean>

    <!--配置MyBatis工厂 -->
    <bean id="sqlSessionFactory"  class="org.mybatis.spring.SqlSessionFactoryBean">
         <!--注入数据源 -->
         <property name="dataSource" ref="dataSource" />
         <!--指定核心配置文件位置 -->
           <property name="configLocation" value="mybatis-config.xml"/>
   </bean>
     
</beans> 

mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
 "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
</configuration>

poji包中的Customer.java

package pojo;

public class Customer {

    private Integer id;
    private String username;
    private String job;
    private String tel;
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public String getJob() {
        return job;
    }
    public void setJob(String job) {
        this.job = job;
    }
    public String getTel() {
        return tel;
    }
    public void setTel(String tel) {
        this.tel = tel;
    }
    @Override
    public String toString() {
        return "Customer [id=" + id + ", username=" + username + ", job=" + job + ", tel=" + tel + "]";
    }    
    }

mapper包中的CustomerMapper.xml文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="day0525.mapper.CustomerMapper">
    <!-- 根据id查询一个客户信息 -->
    <select id="selectCustomerById" parameterType="Integer" 
        resultType="day0525.pojo.Customer">
        select * from customer where id = #{id}
    </select>
    <insert id="insertCustomer" parameterType="day0525.pojo.Customer">
        insert into customer values(#{id},#{username},#{job},#{tel})
    </insert>
    <update id="updateCustomer" parameterType="Integer">
        update customer set username=#{username},job=#{job},tel=#{tel} where id=#{id}
    </update>
    <delete id="deleteCustomer" parameterType="Integer">
        delete from customer where id=#{id}
    </delete>
</mapper>

mapper包中的CustomerMapper.java接口

package mapper;

import org.springframework.stereotype.Repository;

import pojo.Customer;
@Repository
public interface CustomerMapper {
    Customer selectCustomerById(Integer id);

    void insertCustomer(Customer customer);

    void deleteCustomerById(int i);

    void updateCustomerById(Customer customer);

}

controller包中的CustomerController.java文件

package controller;

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

import mapper.CustomerMapper;
import pojo.Customer;

@Controller
public class CustomerController {
    @Autowired
    private CustomerMapper mapper;
    //查询
    public void findCustomerById(){
        Customer customer = mapper.selectCustomerById(1);
        System.out.println(customer);
    }
    
    //插入
    public void insertCustomer(){
        Customer customer = new Customer();
        customer.setId(4);
        customer.setJob("网络安全员");
        customer.setUsername("王五");
        customer.setTel("158");
        mapper.insertCustomer(customer);
        System.out.println("插入成功！");
    }
    
    //删除
    public void deleteUser(){
        mapper.deleteCustomerById(1);
        System.out.println("用户删除成功！");
    }
    
    //修改信息
    public void updateCustomer(){
        Customer customer = new Customer();
        customer.setId(2);
        customer.setJob("大数据开发员");
        customer.setUsername("小白");
        customer.setTel("17685454534");
        mapper.updateCustomerById(customer);
        System.out.println("修改成功！");
    }
    
}

test包中的CustomerTest.java文件

package test;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import controller.CustomerController;

public class CustomerTest {
public static void main(String[] args) {
    ApplicationContext appCon = new ClassPathXmlApplicationContext("classpath:applicationContext.xml"); 
      CustomerController controller = appCon.getBean(CustomerController.class);
      controller.findCustomerById();
}
}

包的分布如图：

数据库是mysql，其中id是主键，自增，不为空

运行结果及报错内容

Exception in thread "main" org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [applicationContext.xml]; nested exception is java.io.FileNotFoundException: class path resource [applicationContext.xml] cannot be opened because it does not exist
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:344)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:304)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:181)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:217)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:188)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:252)
    at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:127)
    at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:93)
    at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:129)
    at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:613)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:514)
    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
    at test.CustomerTest.main(CustomerTest.java:10)
Caused by: java.io.FileNotFoundException: class path resource [applicationContext.xml] cannot be opened because it does not exist
    at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:172)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:330)
    ... 13 more

我的解答思路和尝试过的方法

我在想是不是applicationContext.xml哪里配置错误了

我想要达到的结果

成功输出来
请求各位帮帮忙

web.xml贴出来