虽然说unity普遍用sqlite和mysql比较多，但是由于我第一个接触的数据库就是SqlServer，本着先入为主的想法，我查阅了一下网上相关的mysql管理类略作改动，使他可以在SqlServer里运行，下面附上代码。
using UnityEngine;
using System;
using System.Data;
using System.Collections;
using MySql.Data.MySqlClient;
using MySql.Data;
using System.IO;
using System.Data.SqlClient;
public class SqlserverManager
{
static string s = @"server=127.0.0.1;database=DrugDatabase;uid=sa;pwd=123456";
/*server是你的服务器，不用的话就用本机地址，第二个填你的数据库名称，后面是你的数据库账号密 码，默认是sa/123456*/
static SqlConnection con = new SqlConnection(s);//数据库连接
static SqlDataAdapter sda = null;
static SqlCommand cmd = new SqlCommand();
public SqlserverManager()
{
if (con.State == ConnectionState.Closed)//检测连接是否已经打开，如果没有就打开连接
OpenSql();
}
public static void OpenSql()
{
try
{
con.Open();
}
catch (Exception e)
{
throw new Exception("服务器连接失败，请重新检查是否打开MySql服务。" + e.Message.ToString());
}
}
public DataSet CreateTable(string name, string[] col, string[] colType)
{
if (col.Length != colType.Length)
{
throw new Exception("columns.Length != colType.Length");
}
string query = "CREATE TABLE " + name + " (" + col[0] + " " + colType[0];
for (int i = 1; i < col.Length; ++i)
{
query += ", " + col[i] + " " + colType[i];
}
query += ")";
return ExecuteQuery(query);
}
public DataSet CreateTableAutoID(string name, string[] col, string[] colType)
{
if (col.Length != colType.Length)
{
throw new Exception("columns.Length != colType.Length");
}
string query = "CREATE TABLE " + name + " (" + col[0] + " " + colType[0] + " NOT NULL AUTO_INCREMENT";
for (int i = 1; i < col.Length; ++i)
{
query += ", " + col[i] + " " + colType[i];
}
query += ", PRIMARY KEY (" + col[0] + ")" + ")";
Debug.Log(query);
return ExecuteQuery(query);
}
//插入一条数据，包括所有，不适用自动累加ID。
public DataSet InsertInto(string tableName, string[] values)
{
string query = "INSERT INTO " + tableName + " VALUES (" + "'" + values[0] + "'";
for (int i = 1; i < values.Length; ++i)
{
query += ", " + "'" + values[i] + "'";
}
query += ")";
Debug.Log(query);
return ExecuteQuery(query);
}
//插入部分ID
public DataSet InsertInto(string tableName, string[] col, string[] values)
{
if (col.Length != values.Length)
{
throw new Exception("columns.Length != colType.Length");
}
string query = "INSERT INTO " + tableName + " (" + col[0];
for (int i = 1; i < col.Length; ++i)
{
query += ", " + col[i];
}
query += ") VALUES (" + "'" + values[0] + "'";
for (int i = 1; i < values.Length; ++i)
{
query += ", " + "'" + values[i] + "'";
}
query += ")";
Debug.Log(query);
return ExecuteQuery(query);
}
/// <summary>
/// 简单查询
/// </summary>
/// <param name="tableName">表名</param>
/// <param name="items">目标列</param>
/// <param name="col">约束</param>
/// <param name="operation">运算符</param>
/// <param name="values">约束结果</param>
/// <returns></returns>
public DataSet SelectWhere(string tableName, string[] items, string[] col, string[] operation, string[] values)
{
if (col.Length != operation.Length || operation.Length != values.Length)
{
throw new Exception("col.Length != operation.Length != values.Length");
}
string query = "SELECT " + items[0];
for (int i = 1; i < items.Length; ++i)
{
query += ", " + items[i];
}
query += " FROM " + tableName + " WHERE " + col[0] + operation[0] + "'" + values[0] + "' ";
for (int i = 1; i < col.Length; ++i)
{
query += " AND " + col[i] + operation[i] + "'" + values[i] + "' ";
}
return ExecuteQuery(query);
}
/// <summary>
/// 多表查询
/// </summary>
/// <param name="tableName">表名</param>
/// <param name="items">查询目标</param>
/// <param name="col">约束</param>
/// <param name="operation">运算符</param>
/// <param name="values">约束结果</param>
/// <returns></returns>
public DataSet SelectWhereFromN(string[] tableName, string[] items, string[] col, string[] operation, string[] values)
{
if (col.Length != operation.Length || operation.Length != values.Length)
{
throw new Exception("col.Length != operation.Length != values.Length");
}
string query = "SELECT " + items[0];
for (int i = 1; i < items.Length; ++i)
{
query += ", " + items[i];
}
query += " FROM " + tableName[0];
for (int i = 1; i < tableName.Length; ++i)
{
query += ", " + tableName[i];
}
query += " WHERE " + col[0] + operation[0] + "'" + values[0] + "' ";
for (int i = 1; i < col.Length; ++i)
{
query += " AND " + col[i] + operation[i] + "'" + values[i] + "' ";
}
return ExecuteQuery(query);
}
/// <summary>
/// 简单修改
/// </summary>
/// <param name="tableName">表名</param>
/// <param name="cols">修改前</param>
/// <param name="colsvalues">修改后</param>
/// <param name="selectkey">约束</param>
/// <param name="selectvalue">约束结果</param>
/// <returns></returns>
public DataSet UpdateInto(string tableName, string[] cols, string[] colsvalues, string selectkey, string selectvalue)
{
string query = "UPDATE " + tableName + " SET " + cols[0] + " = " + colsvalues[0];
for (int i = 1; i < colsvalues.Length; ++i)
{
query += ", " + cols[i] + " =" + colsvalues[i];
}
query += " WHERE " + selectkey + " = " + selectvalue + " ";
return ExecuteQuery(query);
}
public DataSet Delete(string tableName, string[] cols, string[] colsvalues)
{
string query = "DELETE FROM " + tableName + " WHERE " + cols[0] + " = " + colsvalues[0];
for (int i = 1; i < colsvalues.Length; ++i)
{
query += " or " + cols[i] + " = " + colsvalues[i];
}
Debug.Log(query);
return ExecuteQuery(query);
}
public static void Close()
{
con.Close();
}
//数据库执行部分，颇为重要******
public static DataSet ExecuteQuery(string sqlString)
{
if (con.State == ConnectionState.Open)//检测通道
{
DataSet ds = new DataSet();
try
{
sda = new SqlDataAdapter(sqlString, con);
sda.Fill(ds);
con.Close();//执行结束关闭通道
}
catch (Exception ee)
{
throw new Exception("SQL:" + sqlString + "/n" + ee.Message.ToString());
}
finally
{
}
return ds;
}
return null;
}
}
然后我们开始简单搭建一下ui;
image.png
如图，是一个简单的登入界面，值得一提的谁手动选择密码是否显示的部分。下面附上代码
using UnityEngine;
using System.Collections;
using UnityEngine.UI;
public class InputScript : MonoBehaviour
{
public Toggle toggle; //ui中的toggle，拖到此处即可
public InputField input;
void Start()
{
input.contentType = InputField.ContentType.Password;
toggle.onValueChanged.AddListener(ToggleClick);
}
public void ToggleClick(bool isShow)
{
input.contentType = isShow ? InputField.ContentType.Standard : InputField.ContentType.Password;
input.Select();
}
}
然后我们简单的创建一个用户表
image.png
然后我们填写登入逻辑（暂时逻辑会不太完全，我还没做错误弹窗部分）
using UnityEngine;
using System;
using System.Data;
using System.Collections;
using MySql.Data.MySqlClient;
using MySql.Data;
using System.IO;
using UnityEngine.UI;
public class LoginBtn : MonoBehaviour
{
string Error;
public Text id;
public InputField password;
public string userid;
public int myjurisdiction;
public GameObject work;
public GameObject login;
public void LoginOnClick()
{
try
{
SqlserverManager sql = new SqlserverManager();
DataSet ds = sql.SelectWhere("UserTables", new string[] { "password" }, new string[] { "id" }, new string[] { "=" }, new string[] { id.text });
if (ds != null)
{
DataTable table = ds.Tables[0];
foreach (DataRow row in table.Rows)
{
foreach (DataColumn column in table.Columns)
{
Debug.Log(row[column]);
if(row[column].ToString() == password.text)
{
Debug.Log("bingo");
//跳到工作界面
userid = id.text;//日后会用到
SqlserverManager sql1 = new SqlserverManager();
DataSet ds1 = sql1.SelectWhere("UserTables", new string[] { "Jurisdiction" }, new string[] { "id" }, new string[] { "=" }, new string[] { id.text });
if (ds1 != null)
{
DataTable table1 = ds1.Tables[0];
foreach (DataRow row1 in table1.Rows)
{
foreach (DataColumn column1 in table1.Columns)
{
Debug.Log(row1[column1]);
myjurisdiction = int.Parse(row1[column1].ToString());//日后会用到
}
}
}
work.SetActive(true);
login.SetActive(false);
}
else
{
Debug.Log("密码不对");
//密码错了
}
}
}
}
else
{
Debug.Log("账号不存在");
//报错窗口
}
}
catch (Exception e)
{
Error = e.Message;
}
}
// Update is called once per frame
void OnGUI()
{
if (Error != null)
{
GUILayout.Label(Error);
}
}
}
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