如何在H2数据库中存储表单数据(当前使用POSTman，但不适用于网站表单)

CREATE TABLE form_data (
  id INT PRIMARY KEY AUTO_INCREMENT,
  name VARCHAR(255),
  email VARCHAR(255),
  message TEXT
);

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

public class H2DatabaseConnection {
    public static void main(String[] args) {
        try {
            // 加载H2数据库驱动
            Class.forName("org.h2.Driver");
            
            // 建立数据库连接
            Connection connection = DriverManager.getConnection("jdbc:h2:~/test", "sa", "");
            
            // 执行数据库操作
            // ...
            
            // 关闭数据库连接
            connection.close();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

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

public class InsertFormData {
    public static void main(String[] args) {
        try {
            // 加载H2数据库驱动
            Class.forName("org.h2.Driver");
            
            // 建立数据库连接
            Connection connection = DriverManager.getConnection("jdbc:h2:~/test", "sa", "");
            
            // 插入表单数据
            String sql = "INSERT INTO form_data (name, email, message) VALUES (?, ?, ?)";
            PreparedStatement statement = connection.prepareStatement(sql);
            statement.setString(1, "John Doe");
            statement.setString(2, "john.doe@example.com");
            statement.setString(3, "Hello, H2 database!");
            statement.executeUpdate();
            
            // 关闭数据库连接
            statement.close();
            connection.close();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

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

public class QueryFormData {
    public static void main(String[] args) {
        try {
            // 加载H2数据库驱动
            Class.forName("org.h2.Driver");
            
            // 建立数据库连接
            Connection connection = DriverManager.getConnection("jdbc:h2:~/test", "sa", "");
            
            // 查询表单数据
            String sql = "SELECT * FROM form_data";
            PreparedStatement statement = connection.prepareStatement(sql);
            ResultSet resultSet = statement.executeQuery();
            
            // 处理查询结果
            while (resultSet.next()) {
                int id = resultSet.getInt("id");
                String name = resultSet.getString("name");
                String email = resultSet.getString("email");
                String message = resultSet.getString("message");
                
                System.out.println("ID: " + id);
                System.out.println("Name: " + name);
                System.out.println("Email: " + email);
                System.out.println("Message: " + message);
            }
            
            // 关闭数据库连接
            resultSet.close();
            statement.close();
            connection.close();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}