1，在根目錄的pom.xml中新增maven依賴

<dependencies>
<!--mytabis依賴-->
　　<dependency>
 　　 <groupId>org.mybatis</groupId>
  　　<artifactId>mybatis</artifactId>
  　　<version>3.5.2</version>
　　</dependency>

<!--mysql依賴-->
    <dependency>
        <
 
groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>8.0.22</version>
    </dependency>

2，建立模組

根目錄->new->module articatid按照規範起名mybatis-01

新增完成後pom.xml配置檔案中會多出modules標籤

3，配置mybatis核心配置檔案(連結資料庫)

mybatis-01->src->main->resources->new file mybatis-config.xml

寫入配置

<?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>
  <environments default="development">
    <environment id="development">
      <transactionManager 
 
type="JDBC"/>
      <dataSource type="POOLED">
        <property name="driver" value="${driver}"/> <!--填自己的連結資料庫所需要的driver-->
        <property name="url" value="${url}"/>  <!--填寫url-->
        <property name="username" value="${username}"/> <!--填寫username-->　　
        <property name="password" value="${password}"/> <!--填寫password-->
      </dataSource>
    </environment>
  </environments>
  
</configuration>

4,編寫mybatis工具類

//用來獲取sqlsession的工具類
public class MybatisUtils {
    private static SqlSessionFactory sqlSessionFactory;
    static {
        try {
            //獲取sqlsessionFactory物件
            String resource = "mybatis-config.xml";
            InputStream inputStream = Resources.getResourceAsStream(resource);
            sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    public static SqlSession getSqlSession(){
        return sqlSessionFactory.openSession();
    }


}

5，資料庫建表，編寫實體類，dao介面，mapper.xml

//實體類
public class user { 
    private int id;
    private String name;
    private String pwd;

    public user() {
    }

    public user(int id, String name, String pwd) {
        this.id = id;
        this.name = name;
        this.pwd = pwd;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPwd() {
        return pwd;
    }

    public void setPwd(String pwd) {
        this.pwd = pwd;
    }

    @Override
    public String toString() {
        return "user{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", pwd='" + pwd + '\'' +
                '}';
    }
}

//dao介面
public interface userDao {
    public user selectOne(int id);
　　 public List<user> getALl();

}

<!--userMapper.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">
<!--namespace用來繫結dao介面-->
<mapper namespace="com.grigeorge.dao.userDao">
    <select id="getAll" resultType="com.grigeorge.entity.user">
    select * from mybatis.user
  </select>
    <select id="selectOne" resultType="com.grigeorge.entity.user">
    select * from Blog where id = 1
  </select>
</mapper>

寫完後須在mybatis-config.xml中新增mapper標籤形成對映關聯

<mappers>
    <mapper resource="com/grigeorge/dao/userMapper.xml"/> <!--userMapper.xml的相對路徑-->
  </mappers>

6，測試

public class userDaoTest {
    public static void main(String[] args) {
        SqlSession sqlSession = MybatisUtils.getSqlSession();
        userDao userDao =sqlSession.getMapper(userDao.class);
        List<user> userList= userDao.getAll();
        for (user user : userList) {
            System.out.println(user);
        }
//        user user = userDao.selectOne(4);
//        System.out.println(user);
    }
}

補充遇到的一些問題：

###報錯 ：Cause: java.io.IOException: Could not find resource com/grigeorge/dao/userMapper.xml

解決方案：在根目錄下的pom.xml中加入以下程式碼

 <build>
    <resources>
        <resource>
            <directory>src/main/java</directory>
            <includes>
                <include>**/*.xml</include>
            </includes>
        </resource>
    </resources>
</build>

###報錯：

解決方案：修改mybatis-config.xml中的url配置，

<property name="url" value="jdbc:mysql://localhost:3306/mybatis"/>

改為：

<property name="url" value="jdbc:mysql://localhost:3306/mybatis?useUnicode=true&amp;useJDBCCompliantTimezoneShift=true&amp;useLegacyDatetimeCode=false&amp;serverTimezone=UTC"/>

問題解決後得到測試資料