安卓读取mysql数据库代码

dependencies {
    // 其他依赖项
    implementation 'mysql:mysql-connector-java:8.0.27' // 替换版本号为最新的可用版本
}

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

public class DatabaseConnection {
    private static final String DB_URL = "jdbc:mysql://your_mysql_server_address:your_mysql_server_port/your_database_name";
    private static final String USER = "your_username";
    private static final String PASS = "your_password";

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

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class MainActivity {
    public static void main(String[] args) {
        Connection connection = null;
        Statement statement = null;
        ResultSet resultSet = null;

        try {
            connection = DatabaseConnection.getConnection();
            statement = connection.createStatement();
            String query = "SELECT * FROM users";
            resultSet = statement.executeQuery(query);

            while (resultSet.next()) {
                String username = resultSet.getString("username");
                String email = resultSet.getString("email");
                System.out.println("Username: " + username + ", Email: " + email);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            try {
                if (resultSet != null) resultSet.close();
                if (statement != null) statement.close();
                if (connection != null) connection.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}