Unity3D 连接MySQL数据库笔记4-Unity3d代码
新建Unity3D项目
新建一个 Plugins文件夹
把所需要的DLL放到 Plugins中
新建C#脚本 命名为ToMysql.cs
不多说了 ，直接上代码，很简单 有注释 ，大家一看就明白了
using UnityEngine;
using System;
using System.Collections;
using System.Data;
using MySql.Data.MySqlClient;
public class ToMysql : MonoBehaviour {
public static MySqlConnection dbConnection; /*mysql数据库连接对象*/
static string host = "";
static string id = "";
static string pwd = "";
static string database = "";
static string result = "";
private string strCommand ;
public static DataSet MyObj;
public string connectionString;
public Vector2 pPos;
public Vector2 pSize;
public DataTable pdatatable;
public DataSet pDataset;
public Vector2 conPos;
public Vector2 conSize;
void Awake()
{
host = "127.0.0.1"; /*mysql数据库服务器地址*/
id = "root"; /*mysql用户名*/
pwd = "123456"; /*密码*/
database = "test";/*数据库名*/
result = ""; /*mysql版本号信息暂存*/
strCommand = "Select uname from tuser";
/*一些UI按钮的坐标配置信息11*/
pPos = new Vector2( 50,50 );
pSize = new Vector2(100,35);
/*一些UI按钮的坐标配置信息22*/
conPos = new Vector2( 300,60 );
conSize = new Vector2( 150, 50 );
/*初始给一个新增员工信息的时候的默认文本框内默认值*/
pkey = "100291";
name = "姓名";
sex = "男";
age = "25";
adress = "家庭详细住址";
money = "2800";
}
void OnGUI()
{
/*第一次连接到MySQL数据库*/
ConnectFirstServer();
/*显示连接到的MySQL数据库的版本号信息*/
GUILayout.Label(result);
/*主要大列表显示员工信息的修改删除function*/
ShowP_GUIData();
/*添加员工信息*/
AddPerson();
/*点了修改编辑信息后*/
ShowEdit_PersonData();
}
/*关闭Unity程序*/
public static void OnApplicationQuit()
{
closeSqlConnection();
}
/*第一次连接到MySQL数据库*/
public void ConnectFirstServer()
{
if( dbConnection == null )
{
GUI.Button( new Rect(conPos.x ,conPos.y,conSize.x,conSize.y),"数据库Server地址");
host = GUI.TextField(new Rect(conPos.x ,conPos.y+50,conSize.x,conSize.y),host );
GUI.Button( new Rect(conPos.x ,conPos.y+100,conSize.x,conSize.y),"mysql用户名");
id = GUI.TextField(new Rect(conPos.x ,conPos.y+150,conSize.x,conSize.y),id );
GUI.Button( new Rect(conPos.x ,conPos.y+200,conSize.x,conSize.y),"密码");
pwd = GUI.TextField(new Rect(conPos.x ,conPos.y+250,conSize.x,conSize.y),pwd );
GUI.Button( new Rect(conPos.x ,conPos.y+300,conSize.x,conSize.y),"数据库名");
database = GUI.TextField(new Rect(conPos.x ,conPos.y+350,conSize.x,conSize.y),database );
connectionString = string.Format("Server = {0};Database = {1}; User = {2}; Password = {3};",host,database,id,pwd);
if(GUI.Button(new Rect(conPos.x+180 ,conPos.y+200,conSize.x,conSize.y),"登录数据库"))
{
openSqlConnection(connectionString);
MyObj = GetDataSet(strCommand);
/*读取数据函数Debug 管理员账号密码*/
ReaderData();
/*测试方法Debug 管理员账号密码*/
ShowDataSet();
/*重新读取p_info表里所有员工信息*/
SelectPdataSet();
}
}
}
// Connect to database
private static void openSqlConnection(string connectionString)
{
dbConnection = new MySqlConnection(connectionString);
try{
dbConnection.Open();
result = dbConnection.ServerVersion; /*获得MySql的版本*/
}
catch(MySqlException e)
{
Debug.Log( e.Message );
dbConnection = null;
host = "服务器连接错";
id = "用户名或密码错误";
pwd = "用户名或密码错误";
}
Debug.Log(result);
}
/*关闭Mysql连接*/
private static void closeSqlConnection()
{
dbConnection.Close();
dbConnection = null;
}
/*执行某些mysql语句*/
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 /*得到一个 dataSet对象*/
public DataSet GetDataSet(string sqlString)
{
DataSet ds = new DataSet();
try
{
MySqlDataAdapter da = new MySqlDataAdapter(sqlString, dbConnection);
da.Fill(ds);
}
catch (Exception ee)
{
Debug.Log("SQL:" + sqlString + "\n" + ee.Message.ToString());
dbConnection = null;
}
return ds;
}
#endregion
/*Debug显示管理员账号密码*/
void ReaderData()
{
MySqlCommand mySqlCommand = new MySqlCommand("Select * from tuser;", dbConnection);
MySqlDataReader reader = mySqlCommand.ExecuteReader();
try
{
while (reader.Read())
{
if (reader.HasRows)
{
print("uname:" + reader.GetString(0) + "--upwd：" + reader.GetString(1) );
}
}
}
catch (Exception e)
{
Debug.Log("查询失败了！"+ e.Message );
dbConnection = null;
}
finally
{
reader.Close();
}
}
/*Debug显示管理员账号密码*/
void ShowDataSet()
{
string commandString = "Select * from tuser";
/* 创建DataSet命令对象和DataSet*/
if(dbConnection.State != ConnectionState.Open)
{
dbConnection = new MySqlConnection(connectionString);
try
{
dbConnection.Open();
result = dbConnection.ServerVersion; /*获得MySql的版本*/
}
catch(MySqlException e)
{
Debug.Log( e.Message );
dbConnection = null;
}
}
using( MySqlDataAdapter DataAdapter = new MySqlDataAdapter(commandString, connectionString))
{
DataSet Dataset = new DataSet();
/* 填充DataSet对象*/
DataAdapter.Fill(Dataset, "tuser");
/*从DataSet获取一个表*/
DataTable datatable = Dataset.Tables[0];
for (int i = 0; i < datatable.Rows.Count; i++)
{
Debug.Log( datatable.Rows[i]["uname"].ToString() );
Debug.Log( datatable.Rows[i]["upwd"].ToString() );
}
}
}
/*显示员工信息function*/
void SelectPdataSet()
{
string commandString = "Select * from p_info";
/* 创建DataSet命令对象和DataSet*/
if(dbConnection.State != ConnectionState.Open)
{
dbConnection = new MySqlConnection(connectionString);
try{
dbConnection.Open();
result = dbConnection.ServerVersion; /*获得MySql的版本*/
}
catch(MySqlException e)
{
Debug.Log( e.Message );
}
}
using( MySqlDataAdapter DataAdapter = new MySqlDataAdapter(commandString, connectionString))
{
if(pDataset !=null )
{
pDataset = null;
}
pDataset = new DataSet();
/* 填充DataSet对象*/
DataAdapter.Fill(pDataset, "p_info");
/*从DataSet获取一个表*/
if(pdatatable != null)
{
pdatatable = null;
}
pdatatable = pDataset.Tables[0];
}
}
/*主要列表显示员工信息的修改删除function*/
void ShowP_GUIData()
{
if( pdatatable != null )
{
if(pdatatable == null)
return;
try{
for (int i = 0; i < pdatatable.Rows.Count; i++)
{
GUI.Button(new Rect(pPos.x ,15 ,pSize.x,pSize.y ), "姓名" );
GUI.Button(new Rect(pPos.x+100 ,15 ,pSize.x,pSize.y ), "性别" );
GUI.Button(new Rect(pPos.x+200 ,15 ,pSize.x,pSize.y ), "年龄" );
GUI.Button(new Rect(pPos.x+300 ,15 ,pSize.x +200,pSize.y ), "家庭详细住址" );
GUI.Button(new Rect(pPos.x+600,15 ,pSize.x,pSize.y ), "月工资" );
GUI.Button(new Rect(pPos.x ,pPos.y +i*35 ,pSize.x,pSize.y ), pdatatable.Rows[i]["pname"].ToString() );
GUI.Button(new Rect(pPos.x+100 ,pPos.y +i*35 ,pSize.x,pSize.y ), pdatatable.Rows[i]["psex"].ToString() );
GUI.Button(new Rect(pPos.x+200 ,pPos.y +i*35 ,pSize.x,pSize.y ), pdatatable.Rows[i]["page"].ToString() );
GUI.Button(new Rect(pPos.x+300 ,pPos.y +i*35 ,pSize.x +200,pSize.y ), pdatatable.Rows[i]["padress"].ToString() );
GUI.Button(new Rect(pPos.x+600,pPos.y +i*35 ,pSize.x,pSize.y ), pdatatable.Rows[i]["pmoney"].ToString() );
if( GUI.Button(new Rect(pPos.x+710,pPos.y +i*35 ,pSize.x,pSize.y ), "修改" ))
{
canEdit_person = true;
Debug.Log( pdatatable.Rows[i]["pkey"].ToString() );
Edit_Person( pdatatable.Rows[i]["pkey"].ToString() );
pdatatable = null;
}
if( GUI.Button(new Rect(pPos.x+810,pPos.y +i*35 ,pSize.x,pSize.y ), "删除" ) )
{
DeletePerson( pdatatable.Rows[i]["pkey"].ToString() );
}
}
if( pdatatable.Rows.Count>=1)
{
if( GUI.Button(new Rect(pPos.x+750,15 ,pSize.x,pSize.y ), "增加员工信息" ))
{
canAddPerson = true;
pdatatable = null;
}
}
}
catch
{
Debug.Log( "Some Error");
}
}
}
public string pkey;
public string name;
public string sex;
public string age;
public string adress;
public string money;
public bool canAddPerson;
public int selGridInt = 0;
public string[] selsex = new string[] {"男", "女"};
public string sqlstr;
/*添加员工信息的function*/
void AddPerson()
{
if(canAddPerson )
{
GUI.Button( new Rect(150 ,conPos.y+100,conSize.x,conSize.y),"员工唯一编号" );
pkey = GUI.TextField(new Rect(conPos.x ,conPos.y+100,conSize.x,conSize.y),pkey );
GUI.Button( new Rect(150 ,conPos.y+160,conSize.x,conSize.y),"姓名" );
name = GUI.TextField(new Rect(conPos.x ,conPos.y+160,conSize.x,conSize.y),name );
GUI.Button( new Rect(150 ,conPos.y+220,conSize.x,conSize.y),"性别" );
selGridInt = GUI.SelectionGrid(new Rect(conPos.x ,conPos.y+220,100,30), selGridInt, selsex, 2);
GUI.Button( new Rect(150 ,conPos.y+270,conSize.x,conSize.y),"年龄" );
age = GUI.TextField(new Rect(conPos.x ,conPos.y+270,conSize.x,conSize.y),age );
GUI.Button( new Rect(150 ,conPos.y+330,conSize.x,conSize.y),"家庭详细住址" );
adress = GUI.TextField(new Rect(conPos.x ,conPos.y+330,conSize.x,conSize.y),adress );
GUI.Button( new Rect(150 ,conPos.y+380,conSize.x,conSize.y),"员工月工资" );
money = GUI.TextField(new Rect(conPos.x ,conPos.y+380,conSize.x,conSize.y),money );
if( GUI.Button(new Rect(conPos.x+280 ,conPos.y+220,conSize.x,conSize.y),"添加此员工信息") )
{
if( pkey.Trim()==""|| name.Trim()==""||
sex.Trim()==""||age.Trim()==""||
adress.Trim()==""||money.Trim()=="")
{
pkey = "有错误请重新输入";
name = "姓名";
sex = "性别必须为男或女";
age = "年龄必须为数字";
adress = "家庭详细住址";
money = "月工资必须为数字";
return;
}
if( selGridInt == 0 )
{
sex = "男";
}
if( selGridInt == 1 )
{
sex = "女";
}
if( isNumberic(age)==false && isNumberic(money)==false )
{
pkey = "有错误请重新输入";
name = "姓名";
sex = "性别必须为男或女";
age = "年龄必须为数字";
adress = "家庭详细住址";
money = "月工资必须为数字或超过了限制";
return;
}
#region /*插入数据*/
try{
openSqlConnection(connectionString);
if( dbConnection.State != ConnectionState.Open)
{
dbConnection.Open();
}
sqlstr = string.Format("INSERT INTO p_info(`pkey`, `pname`, `psex`, `page`, `padress`, `pmoney`) VALUES ('{0}','{1}','{2}','{3}','{4}','{5}')",
pkey,name,sex,age,adress,money);
MySqlCommand cmd = new MySqlCommand(sqlstr, dbConnection);
cmd.ExecuteNonQuery();
dbConnection.Close();
Debug.Log("InsertData");
canAddPerson = false;
SelectPdataSet();
}
catch (MySqlException e){
pkey = "发生错误插入失败";
name = "姓名";
sex = "性别必须为男或女";
age = "年龄必须为数字";
adress = "家庭详细住址";
money = "月工资必须为数字或超过了限制";
Debug.Log("信息录入失败" + e.Message);
}
#endregion
}
if( GUI.Button(new Rect(conPos.x+280 ,conPos.y+320,conSize.x,conSize.y),"返回") )
{
canAddPerson = false;
SelectPdataSet();
}
}
}
/*检查输入的是否是数字*/
public bool isNumberic(string message)
{
/*判断是否为整数字符串*/
/*是的话则将其转换为数字并将其设为out类型的输出值、返回true, 否则为false*/
int result = -1; /*result 定义*/
try
{
/*当数字字符串的为是少于4时，以下三种都可以转换，任选一种*/
/*如果位数超过4的话，请选用Convert.ToInt32() 和int.Parse()*/
result = int.Parse(message);
return true;
}
catch
{
return false;
Debug.Log("number false");
}
}
/*删除选中员工信息的方法*/
void DeletePerson(string Spkey)
{
#region /*删除数据*/
try{
openSqlConnection(connectionString);
if( dbConnection.State != ConnectionState.Open)
{
dbConnection.Open();
}
sqlstr = string.Format("Delete from p_info where pkey='{0}'", Spkey);
MySqlCommand cmd = new MySqlCommand(sqlstr, dbConnection);
cmd.ExecuteNonQuery();
dbConnection.Close();
Debug.Log("DeleteData");
SelectPdataSet();
}
catch (MySqlException e){
Debug.Log("删除失败" + e.Message);
}
#endregion
}
public bool canEdit_person;
/*传入选中要修改员工的主键pkey,并读取出对应数据给多个字段*/
void Edit_Person( string mpkey )
{
if(canEdit_person)
{
#region 检索当前选中的数据
string commandString5 = string.Format("Select * from p_info where pkey='{0}'", mpkey);
Debug.Log( commandString5);
/* 创建DataSet命令对象和DataSet*/
if(dbConnection.State != ConnectionState.Open)
{
dbConnection = new MySqlConnection(connectionString);
try
{
dbConnection.Open();
result = dbConnection.ServerVersion; /*获得MySql的版本*/
}
catch(MySqlException e)
{
Debug.Log( e.Message );
}
}
using( MySqlDataAdapter DataAdapter = new MySqlDataAdapter(commandString5, connectionString))
{
DataSet spDataset = new DataSet();
/* 填充DataSet对象*/
DataAdapter.Fill(spDataset, "p_info");
/*从DataSet获取一个表*/
DataTable spdatatable = spDataset.Tables[0];
pkey= spdatatable.Rows[0]["pkey"].ToString() ;
name = spdatatable.Rows[0]["pname"].ToString() ;
age =spdatatable.Rows[0]["page"].ToString() ;
adress= spdatatable.Rows[0]["padress"].ToString() ;
money=spdatatable.Rows[0]["pmoney"].ToString() ;
}
#endregion
}
}
/*点击修改资料按钮后，详细显示当前选中的员工的信息，并提供文本框进行修改*/
void ShowEdit_PersonData()
{
if(canEdit_person)
{
/*
GUI.Button( new Rect(150 ,conPos.y+100,conSize.x,conSize.y),"员工唯一编号" );
pkey = GUI.TextField(new Rect(conPos.x ,conPos.y+100,conSize.x,conSize.y),pkey );
*/
GUI.Button( new Rect(150 ,conPos.y+160,conSize.x,conSize.y),"姓名" );
name = GUI.TextField(new Rect(conPos.x ,conPos.y+160,conSize.x,conSize.y),name );
GUI.Button( new Rect(150 ,conPos.y+220,conSize.x,conSize.y),"性别" );
selGridInt = GUI.SelectionGrid(new Rect(conPos.x ,conPos.y+220,100,30), selGridInt, selsex, 2);
GUI.Button( new Rect(150 ,conPos.y+270,conSize.x,conSize.y),"年龄" );
age = GUI.TextField(new Rect(conPos.x ,conPos.y+270,conSize.x,conSize.y),age );
GUI.Button( new Rect(150 ,conPos.y+330,conSize.x,conSize.y),"家庭详细住址" );
adress = GUI.TextField(new Rect(conPos.x ,conPos.y+330,conSize.x,conSize.y),adress );
GUI.Button( new Rect(150 ,conPos.y+380,conSize.x,conSize.y),"员工月工资" );
money = GUI.TextField(new Rect(conPos.x ,conPos.y+380,conSize.x,conSize.y),money );
Debug.Log("EditPersonData");
if( GUI.Button(new Rect(conPos.x+280 ,conPos.y+220,conSize.x,conSize.y),"返回主页") )
{
canEdit_person = false;
SelectPdataSet();
}
if( GUI.Button(new Rect(conPos.x+280 ,conPos.y+320,conSize.x,conSize.y),"修改员工信息") )
{
if( pkey.Trim()==""|| name.Trim()==""||
sex.Trim()==""||age.Trim()==""||
adress.Trim()==""||money.Trim()=="")
{
pkey = "有错误请重新输入";
name = "姓名";
sex = "性别必须为男或女";
age = "年龄必须为数字";
adress = "家庭详细住址";
money = "月工资必须为数字";
return;
}
if( selGridInt == 0 )
{
sex = "男";
}
if( selGridInt == 1 )
{
sex = "女";
}
if( isNumberic(age)==false && isNumberic(money)==false )
{
pkey = "有错误请重新输入";
name = "姓名";
sex = "性别必须为男或女";
age = "年龄必须为数字";
adress = "家庭详细住址";
money = "月工资必须为数字或超过了限制";
return;
}
#region /*更新数据*/
try{
openSqlConnection(connectionString);
if( dbConnection.State != ConnectionState.Open)
{
dbConnection.Open();
}
sqlstr = string.Format("UPDATE p_info SET pname='{0}', psex='{1}', page='{2}', padress='{3}', pmoney='{4}'WHERE pkey = '{5}'",
name,sex,age,adress,money ,pkey);
MySqlCommand cmd = new MySqlCommand(sqlstr, dbConnection);
cmd.ExecuteNonQuery();
dbConnection.Close();
Debug.Log("UpdateData");
canEdit_person = false;
SelectPdataSet();
}
catch (MySqlException e){
pkey = "发生错误更新失败";
name = "姓名";
sex = "性别必须为男或女";
age = "年龄必须为数字";
adress = "家庭详细住址";
money = "月工资必须为数字或超过了限制";
Debug.Log("信息录入失败" + e.Message);
}
#endregion
}
}
}
}
新建一个 GameObject,将这个脚本拖放到 GameObject对象上
点击运行，输入
服务器地址：127.0.0.1
用户名：root
密码：123456
需要访问的数据库db名：test
点击 登录数据库
如果登录成功，会看到我们刚才插入的信息
点击增加员工信息
嘿嘿，点击添加此员工信息
成功！嘿嘿！
点击删除《深华东》 试试
删除成功！
点击修改 张三的信息
修改性别为女，年龄为18，工资为800，点击修改员工信息
修改成功！
有的朋友反应，发布无法连接，我这里测试是没有问题，
具体请看 ，发布后连接数据库如下图
欢迎与我交流Unity3D技术，QQ2360450496