unity迁移mysql

Unity 使用MySQL数据库需要以下步骤：

1. 下载MySQL Connector/NET。Connector/NET是一个.NET应用程序开发框架，用于与MySQL数据库进行通信。下载地址：https://dev.mysql.com/downloads/connector/net/

2. 在Unity中创建一个C#脚本来连接MySQL数据库。以下是一个简单的例子：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using MySql.Data.MySqlClient;

public class MySQLConnect : MonoBehaviour {

    // MySQL连接信息
    private string server;
    private string database;
    private string uid;
    private string password;
    private string connectionString;

    // MySQL连接对象
    private MySqlConnection connection;

    // 初始化连接信息
    void Start () {
        server = "localhost";
        database = "testdb";
        uid = "root";
        password = "password";
        connectionString = "Server=" + server + ";" + "Database=" + 
            database + ";" + "Uid=" + uid + ";" + "Pwd=" + password + ";";
        connection = new MySqlConnection(connectionString);
    }

    // 连接MySQL数据库
    public void Connect()
    {
        try
        {
            connection.Open();
            Debug.Log("MySQL连接成功！");
        }
        catch (MySqlException ex)
        {
            Debug.Log("MySQL连接失败：" + ex.Message);
        }
    }

    // 关闭MySQL连接
    public void Disconnect()
    {
        if (connection != null)
        {
            connection.Close();
            Debug.Log("MySQL连接关闭！");
        }
    }
}

3. 在Unity中使用MySQL数据库。以下是一个简单的例子：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using MySql.Data.MySqlClient;

public class MySQLQuery : MonoBehaviour {

    // MySQL连接对象
    private MySqlConnection connection;

    // 初始化连接
    void Start () {
        connection = gameObject.AddComponent<MySQLConnect>().connection;
        connection.Open();
    }

    // 查询MySQL数据库
    public void Query()
    {
        MySqlCommand cmd = connection.CreateCommand();
        cmd.CommandText = "SELECT * FROM testtable";
        MySqlDataReader reader = cmd.ExecuteReader();
        while (reader.Read())
        {
            Debug.Log(reader.GetString(0) + " " + reader.GetString(1));
        }
        reader.Close();
    }

    // 关闭MySQL连接
    void OnDestroy()
    {
        connection.Close();
    }
}

注意：在使用MySQL数据库时，请确保在Unity项目设置中选择“.NET 2.0 Subset”作为API兼容性级别。