Scala连接Mysql数据库

//添加依赖

 <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.49</version>
        </dependency>

import java.sql.{Connection, DriverManager, PreparedStatement, ResultSet}

object Jdbc {
  def main(args: Array[String]): Unit = {

    //添加依赖，加载驱动
    Class.forName("com.mysql.jdbc.Driver")
    //建立数据库连接
    val conn: Connection=DriverManager.getConnection("jdbc:mysql://192.168.5.110/bigdata?useSSL=false&useUnicode=true&characterEncoding=UTF-8","root","123456")
    //编写SQL语句
    val stat: PreparedStatement =conn.prepareStatement("select * from students where clazz=?")
    //给参数赋值
    stat.setString(1,"理科二班")
    //执行查询
    val resultSet: ResultSet =stat.executeQuery()
    //解析数据
    while(resultSet.next()){
      val id: Long =resultSet.getLong("id")
      val name: String =resultSet.getString("name")
      val age: Long =resultSet.getLong("age")
      val gender: String =resultSet.getString("gender")
      val clazz: String =resultSet.getString("clazz")
      println(s"$id,$name,$age,$gender,$clazz")
    }
    //关闭连接
    stat.close()
    conn.close()
  }
}

可能出现的问题：

报错：
Thu Jan 06 22:38:56 CST 2022 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.
解决：
url 参数直接设置 useSSL=false 
jdbc:mysql://localhost:3306/数据库名?useSSL=false

url书写错误，密码账户漏写
"jdbc:mysql://192.168.5.110/bigdata?useSSL=false&useUnicode=true&characterEncoding=UTF-8","root","123456"

SQL语言在MySQL中走一遍看看有没有错误，列明不识别等小问题