将android连接到数据库服务器

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class DatabaseConnector {
    private static final String DB_URL = "jdbc:mysql://数据库服务器地址:端口号/数据库名";
    private static final String DB_USER = "用户名";
    private static final String DB_PASSWORD = "密码";

    public static Connection getConnection() throws SQLException {
        return DriverManager.getConnection(DB_URL, DB_USER, DB_PASSWORD);
    }
}

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;

public class MainActivity extends AppCompatActivity {
    // ...

    private void insertData() {
        Connection connection = null;
        try {
            connection = DatabaseConnector.getConnection();
            String sql = "INSERT INTO 表名 (列1, 列2) VALUES (?, ?)";
            PreparedStatement statement = connection.prepareStatement(sql);
            statement.setString(1, "value1");
            statement.setString(2, "value2");
            statement.executeUpdate();
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            if (connection != null) {
                try {
                    connection.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    // ...
}