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  • Unity引擎链接mySQL数据库

    using UnityEngine;
    using System;
    using System.Collections;
    using System.Data;
    using MySql.Data.MySqlClient;
    public class CMySql : MonoBehaviour {
        // Global variables
        public static MySqlConnection dbConnection;//Just like MyConn.conn in StoryTools before
    
         static string host = "192.168.1.100";
         static string id = "mysql";
         static string pwd = "123456";
         static string database = "test";
         static string result = "";
       
    private string strCommand = "Select * from unity3d_test ORDER BY id;";
    public static DataSet MyObj;
         void OnGUI()
         {
             host = GUILayout.TextField( host, 200, GUILayout.Width(200));
             id = GUILayout.TextField( id, 200, GUILayout.Width(200));
             pwd = GUILayout.TextField( pwd, 200, GUILayout.Width(200));
             if(GUILayout.Button("Test"))
             {
        string connectionString = string.Format("Server = {0}; Database = {1}; User ID = {2}; Password = {3};",host,database,id,pwd);
        openSqlConnection(connectionString);
       
        MyObj = GetDataSet(strCommand);
             }
             GUILayout.Label(result);
         }  
        // On quit
        public static void OnApplicationQuit() {
            closeSqlConnection();
        }
       
        // Connect to database
        private static void openSqlConnection(string connectionString) {
            dbConnection = new MySqlConnection(connectionString);
            dbConnection.Open();
            result = dbConnection.ServerVersion;
            //Debug.Log("Connected to database."+result);
        }
       
        // Disconnect from database
        private static void closeSqlConnection() {
            dbConnection.Close();
            dbConnection = null;
            //Debug.Log("Disconnected from database."+result);
        }
       
        // MySQL Query
        public static void doQuery(string sqlQuery) {
            IDbCommand dbCommand = dbConnection.CreateCommand();   
            dbCommand.CommandText = sqlQuery;
            IDataReader reader = dbCommand.ExecuteReader();
            reader.Close();
            reader = null;
            dbCommand.Dispose();
            dbCommand = null;
        }
        #region Get DataSet
        public  DataSet GetDataSet(string sqlString)
        {
            //string sql = UnicodeAndANSI.UnicodeAndANSI.UnicodeToUtf8(sqlString);
      
      
      DataSet ds = new DataSet();
            try
            {
                MySqlDataAdapter da = new MySqlDataAdapter(sqlString, dbConnection);
                da.Fill(ds);
       
            }
            catch (Exception ee)
            {
       
                throw new Exception("SQL:" + sqlString + "\n" + ee.Message.ToString());
            }
            return ds;
      
        }
        #endregion
    }
    
     
    
    using UnityEngine;
    using System;
    using System.Collections;
    using System.Data;
    
    public class DataBaseTest : MonoBehaviour {
    public GUISkin myGUISkin = new GUISkin();
    string strID = "";
    string strName = "";
    string strSex = "";
    int Index = 1;
    // Use this for initialization
    void Start () {
    }
    
    void OnGUI()
    {
      GUI.skin = myGUISkin;
      if (GUI.Button(new Rect(100,320,100,100),"Click Me"))
      {
       foreach(DataRow dr in CMySql.MyObj.Tables[0].Rows)
       {
        if (Index.ToString() == dr["ID"].ToString())
        {
         strID = dr["ID"].ToString();
         strName =  dr["Name"].ToString();
         strSex = dr["Sex"].ToString();
         
         break;
        }
       }   
       Index++;
        if(Index > 5)
       {
        Index = 1;
       }  
       
      }
      GUI.Label(new Rect(320,100,150,70),"DataBaseTest");
      GUI.Label(new Rect(300,210,150,70),strID);
      GUI.Label(new Rect(300,320,150,70),strName);
      GUI.Label(new Rect(300,430,150,70),strSex);
      
    }
    }
    

    2.導入dll
      同先前的帖子 , 將MySql.data.dllImport至Assets底下 , 然後再到Unity\Editor\Data\Frameworks\Mono.framework中
    將System.Data.dll 也一起Import至Assets內 , 當然 , 如果想顯示中文的話 , 請參考中文視頻教學 ,建立一個GUISkin與字型

    3.建立數據庫內容
      主要是因為代碼中的這段內容

         static string host = "192.168.1.100";
         static string id = "mysql";
         static string pwd = "123456";
         static string database = "test";
         private string strCommand = "Select * from unity3d_test ORDER BY id;";
    

    其中host ,id , pwd 請自行設定 , 簡單的說就是連進你的MySQL啦~
    然後建立一個名為test的Database , 在這個test下建立一張table , 取名為 unity3d_test,
    接下來就為這張unity3d_test建立3個欄位 : ID , Name , Sex (記得將ID設定為primary key且默認值為1)
    再來自行填入5筆資料(5筆資料的原因是腳本那邊是設定成5筆資料一個循環 , 使用者可以自行更改腳本試試)

    4.建立GameObject
      建立完GameObject後將上面兩個腳本掛上去 ,如果有建立GUISkin , 記得指定GUISkin

    5.執行
      執行後先按Test按鈕來連接數據庫 , 然後再按"ClickMe"來顯示數據庫內的內容

    6.總結
      以上部份是有關連線至數據庫後 ,再將資料用DataSet的方式獲得出來再加以顯示至介面上 , 歡迎各位高手能夠多多批評指教

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  • 原文地址:https://www.cnblogs.com/lm3515/p/1839416.html
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