运行报错，请老师看看

同学你好，建议同学把mybatis-3.5.4.jar包放到tomcat的lib包下面试试。

如果我的回答解决了你的疑惑，请采纳！祝学习愉快！

问题仍然存在，请老师看看怎么解决？

-------pom.xml-------------

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.imooc</groupId>
    <artifactId>icake</artifactId>
    <version>1.0-SNAPSHOT</version>

    <repositories>
        <repository>
            <id>aliyun</id>
            <name>aliyun</name>
            <url>https://maven.aliyun.com/repository/public</url>
        </repository>
    </repositories>

    <dependencies>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.20</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.4</version>
        </dependency>
        <dependency>
            <groupId>org.apache.ibatis</groupId>
            <artifactId>ibatis-core</artifactId>
            <version>3.0</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>4.0.1</version>
        </dependency>
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
    </dependencies>


</project>

------------DaoFactory------------

package com.imooc.icake.global;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.IOException;

public class DaoFactory {
    private static DaoFactory daoFactory;
    private SqlSessionFactory sessionFactory;
    private DaoFactory(){
        SqlSessionFactoryBuilder sqlSessionFactoryBuilder=new SqlSessionFactoryBuilder();
        try {
            sessionFactory=sqlSessionFactoryBuilder.build(Resources.getResourceAsReader("/mybatis.xml"));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static DaoFactory getInstance(){
        if(daoFactory==null){
            daoFactory=new DaoFactory();
        }
        return daoFactory;
    }

    public <T> T getDao(Class<T> tClass){
        return sessionFactory.openSession(true).getMapper(tClass);
    }

}