Unity连接服务器实现用户登录注册

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

public class MySqlManager : Singleton
{
    protected static string m_databaseIP = "111.50.100.200";         //IP地址
    protected static string m_databasePort = "3306";            //端口号

    protected static string m_userID = "SrarSharkDataTest";                  //MySQL数据库用户名
    protected static string m_password = "StarShark1234";              //MySQL登陆密码
    protected static string m_databaseName = "srarsharkdataall";   //链接的数据库的库名


    protected static string m_connectionString;                 // 数据库连接字符串

 public static	MySqlConnection  connection;
	/// 

	/// 测试是否链接上数据库
	/// 
	/// 
	public bool TestConnection()
    {
        bool isConnected = true;
        //发送数据库连接字段 创建连接通道
        using (MySqlConnection connection = new MySqlConnection(m_connectionString))
        {
            try
            {
                //打开连接通道
                connection.Open();
                Debug.Log("打开了数据库");
            }
            catch (MySqlException E)
            {
                //如果有异常 则连接失败
                isConnected = false;
                throw new Exception(E.Message);
            }
            finally
            {
                //关闭连接通道
                connection.Close();
                Debug.Log("关闭数据库");
            }
        }

        return isConnected;
    }

	/// 

	/// 初始化数据库，利用字符串组拼方式来编写数据库的连接
	/// 
	public static void Init()
	{
		// m_connectionString = string.Format("Server = {0};port={4};Database = {1}; User ID = {2}; Password = {3};", m_databaseIP, m_databaseName, m_userID, m_password, "3306");
		m_connectionString = string.Format("Server = {0}; port = {1}; Database = {2}; User ID = {3}; Password = {4}; Pooling=true; Charset = utf8;", m_databaseIP, m_databasePort, m_databaseName, m_userID, m_password);
		//发送数据库连接字段 创建连接通道
		using (connection = new MySqlConnection(m_connectionString))
		{
			try
			{
				//打开连接通道
				connection.Open();
				Debug.Log("打开了数据库");
			}
			catch (MySqlException E)
			{
                //如果有异常 则连接失败
                Debug.Log("连接失败");
                throw new Exception(E.Message);
			}
			finally
			{
				//关闭连接通道
				connection.Close();
				Debug.Log("关闭数据库");
			}
		}

		Debug.Log(m_connectionString);
	}
    //登录验证
    public void Click_login(string username, string password)
    {
        // MySqlManager.Instance.QuerySpacificDataFromTable("StarSharkData", "UserPassword", "1");
        try
        {
            connection.Open();
            Debug.Log("------输入的用户名---" + username + "-密码-" + password);
            string sqlQuary = "select * from StarSharkData where UserName ='" + username + "' and UserPassword = '" + password + "'";
            MySqlCommand comd = new MySqlCommand(sqlQuary, connection);
            MySqlDataReader reader = comd.ExecuteReader();
            if (reader.Read())
            {
                Debug.Log("------用户存在，登录成功！------");
                //进行登入成功后的操作，例如进入新场景。。。

            }
            else
            {
                Debug.Log("------用户不存在，请注册。或请检查用户名或和密码！------");
            }
        }
        catch (System.Exception e)
        {

            Debug.Log(e.Message);
        }
        finally
        {
            connection.Close();
        }
    }
    //注册验证
    public void Click_register(string username, string password)
    {
        if (!(username.Length > 0 && password.Length > 0))
        {
            Debug.Log("-----用户名和密码必须>0------");
            return;
        }
        try
        {
            connection.Open();
            Debug.Log("-----连接成功！------");

            string sqlQuary = "select * from StarSharkData where UserName =@paral1 and UserPassword = @paral2";
            MySqlCommand comd = new MySqlCommand(sqlQuary, connection);
            comd.Parameters.AddWithValue("paral1", username);
            comd.Parameters.AddWithValue("paral2", password);

            //comd.Parameters.AddWithValue("paral0", 0);id=@para10 and
            MySqlDataReader reader = comd.ExecuteReader();
            if (reader.Read())
            {
                Debug.Log("-----用户名已存在，请重新输！------");
                connection.Close();
            }
            else
            {
                connection.Close();
                Insert_User(username, password);

            }
        }
        catch (System.Exception e)
        {

            Debug.Log(e.Message);
        }
        finally
        {
            connection.Close();
        }
      }
    }

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class MySqlTest : MonoBehaviour
{
 public Button SignIn;//登录按钮
 public Button Register;//注册按钮
 public Button Activation; //测试激活按钮
 public InputField InputUser;//用户名输入框
 public InputField InputPassword;//密码输入框
 // Start is called before the first frame update
 void Start()
 {
 
    //初始化
 	MySqlManager.Init();
 	
 	//登陆，点击事件
 	SignIn.onClick.AddListener(()=> 
 	{
 		MySqlManager.Instance.Click_login(InputUser.text, InputPassword.text);
 	});
 	//注册，点击事件
 	Register.onClick.AddListener(()=> 
 	{
 		MySqlManager.Instance.Click_register(InputUser.text, InputPassword.text);
 	});
}

运行后的结果