今天完成的事情：使用mybatis连接数据库，但是还是没有读取到数据

User.java

package mybatis.po;
import java.util.Date;

public class User {
    private Integer id;
    private String username;
    private Date birthday;
    private String sex;
    private String address;


    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 Date getBirthday() {
        return birthday;
    }

    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public User(String username, Date birthday, String sex, String address) {
        this.username = username;
        this.birthday = birthday;
        this.sex = sex;
        this.address = address;

    }


}

mybatisFirst.java

package  mybatis.first;

import mybatis.po.User;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.jupiter.api.Test;

import java.io.IOException;
import java.io.InputStream;

public class MybatisFirst {

    public SqlSession getSession() throws IOException {

        String resource = "SqlMapConfig.xml"; //mybatis配置文件

        InputStream inputStream = Resources.getResourceAsStream(resource);

        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);

        SqlSession sqlSession = sqlSessionFactory.openSession();

        return sqlSession;
    }

    @Test
    public void findUserById() throws IOException {

        SqlSession sqlSession = getSession(); //调用上面的方法获取sqlSession


        User user = sqlSession.selectOne("test.findUserById", 1);

        System.out.println(user);

        sqlSession.close();
    }
}

SqlMapConfig.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>
    <!-- 和Spring整合后environment配置都会被干掉 -->
    <environments default="development">
        <environment id="development">
            <!-- 使用jdbc事务管理，目前由mybatis来管理 -->
            <transactionManager type="JDBC" />
            <!-- 数据库连接池，目前由mybatis来管理 -->
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver" />
                <property name="url" value="jdbc:mysql://localhost:3306/mybatis" />
                <property name="username" value="root" />
                <property name="password" value="cao562029220" />
            </dataSource>
        </environment>
    </environments>
    <mappers>
        <mapper resource="sqlmap/User.xml" />
    </mappers>
</configuration>

User.xml

<?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="test">
    <!-- 需求：通过id查询用户 -->
    <select id="findUserByName" parameterType="java.lang.String" resultType="mybatis.po.User">
        select * from user where username like '%${value}%'
    </select>
</mapper>

红色的那块好像有问题，不知道怎么改

明天计划的事情：继续学习spring这部分的知识。上周事情比较多耽误了很多进度。着手买服务器并准备后面的任务
遇到的问题：
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