Junit一直在报错

package demo1;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import org.junit.Test;

public class JdbcTest {

    @Test
    public void jdbctest() {
        Connection conn = null;
        Statement stmt = null;
        ResultSet rs = null;
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");
            conn = DriverManager.getConnection(
                    "jdbc:mysql://127.0.0.1:3306/imooc"
                            + "?useSSL=false&serverTimezone=Hongkong&useUnicode=true&characterEncoding=utf-8",
                    "root", "root");
            String sql = "select * from good";
            stmt = conn.createStatement();
            rs = stmt.executeQuery(sql);
            while (rs.next()) {
                int id = rs.getInt("id");
                String name = rs.getString("name");
                float price = rs.getFloat("price");
                String desc = rs.getString("desc");
                if (price < 3500) {
                    System.out.println(id + "  " + name + "  " + price + "  " + desc);
                }
            }
            rs.close();
            stmt.close();
            conn.close();
        }catch (ClassNotFoundException e) {
            e.printStackTrace();
        }catch (SQLException e) {
            e.printStackTrace();
        }
    }
}