asp.net三層架構連接Oracle 11g

連接Oracle時使用微軟的Oracle連接組件；

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一 DAL層

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using System; using System.Collections.Generic; using System.Text; using System.Collections; using System.Data; using System.Data.OracleClient;namespace SystemDAL {public class DAL{//連接字符串public static string connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["db"].ToString();public DAL(){//connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["db"].ToString();}/// <summary>/// 執行單條語句/// </summary>/// <param name="sql"></param>/// <returns></returns>public static int ExecuteNonQuery(string sql){int x = 0;try{// Open a connection to the DB.OracleConnection connOra = new OracleConnection(connectionString);connOra.Open();OracleTransaction tran = connOra.BeginTransaction();// Create a command to execute the sql statement.OracleCommand cmdOra = connOra.CreateCommand();cmdOra.CommandText = sql;x = cmdOra.ExecuteNonQuery();tran.Commit();connOra.Close();connOra.Dispose();cmdOra.Dispose();}catch (Exception ex){//log.Error(ex.StackTrace);}return x;}public static DataTable ExecuteDataTable(String cmdText){DataTable dt = new DataTable();//DbProviderFactory factory = DbProviderFactories.GetFactory(providerName);try{// Open a connection to the DB.//DbConnection connOra = factory.CreateConnection();OracleConnection connOra = new OracleConnection(connectionString);//connOra.ConnectionString = connectionString;connOra.Open();// Create a command to execute the sql statement.//DbCommand cmd = factory.CreateCommand();OracleCommand cmd = connOra.CreateCommand();cmd.CommandText = cmdText;OracleDataAdapter ada = new OracleDataAdapter();//DbDataAdapter ada = factory.CreateDataAdapter();// new OracleDataAdapter(cmd1); ada.SelectCommand = cmd;ada.Fill(dt);connOra.Close();connOra.Dispose();cmd.Dispose();}catch (Exception ex){string str = ex.Message;}return dt;}} }

類DAL；


執行單條語句ExecuteNonQuery：
傳入sql語句，返回值int；
打開Oracle連接，構造Oracle命令對象，設置命令對象的命令文本等于傳入的sql；
執行sql，返回執行的int型結果；


獲取數據表ExecuteDataTable:
傳入sql語句，返回數據表；
打開Oracle連接；
構造Oracle命令對象，設置命令對象的命令文本等于傳入的sql；
new一個Oracle適配器對象，設置適配器對象的SelectCommand等于命令對象；
調用適配器對象的Fill方法填充數據表對象，返回數據表對象；

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二 BLL層

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using System; using System.Collections.Generic; using System.Text; using SystemModel; using SystemDAL; using System.Data;namespace SystemBLL {public class BLL{public BLL(){}/// <summary>/// 插入方法/// </summary>/// <param name="M"></param>/// <returns></returns>public static int InsertData(LoginModel M){string sql = "INSERT INTO Login VALUES(@LoginName,@LoginPassword)";try{DAL dal = new DAL();return DAL.ExecuteNonQuery(sql);}catch (Exception E){throw E;}}/// <summary>/// 修改方法/// </summary>/// <param name="M"></param>/// <returns></returns>public static int UpdateTData(LoginModel M){string sql = "UPDATE Login SET LoginName=@LoginName,LoginPassword=@LoginPassword WHERE ID=@ID";try{DAL dal = new DAL();return DAL.ExecuteNonQuery(sql);}catch (Exception E){throw E;}}/// <summary>/// 刪除方法/// </summary>/// <param name="M"></param>/// <returns></returns>public static int DeleteData(LoginModel M){string sql = "DELETE FROM Login WHERE ID=@ID";try{DAL dal = new DAL();return DAL.ExecuteNonQuery(sql);}catch (Exception E){throw E;}}/// <summary>/// 登錄方法/// </summary>/// <param name="M"></param>/// <returns></returns>public static DataTable Login(string LoginName, string LoginPassword){string sql = "SELECT * FROM Logins WHERE UserName=@LoginName AND Password=@LoginPassword";try{DAL dal = new DAL();return DAL.ExecuteDataTable(sql);}catch (Exception E){throw E;}}/// <summary>/// 查詢所有用戶/// </summary>/// <param name="M"></param>/// <returns></returns>public static DataTable GetUser(LoginModel M){try{string sql = "SELECT * FROM Login";DAL dal = new DAL();return DAL.ExecuteDataTable(sql);}catch (Exception E){ throw E;}}/// <summary>/// 查詢單個用戶/// </summary>/// <param name="M"></param>/// <returns></returns>public static DataTable GetUserID(LoginModel M){try{string sql = "SELECT * FROM Login WHERE ID=@ID";DAL dal = new DAL();return DAL.ExecuteDataTable(sql);}catch (Exception E){throw E;}}} }

引用SystemModel，SystemDAL；
類BLL;


插入數據InsertData：
傳入LoginModel對象M，返回int；
調用DAL.ExecuteNonQuery在Login表中插入值；


修改數據UpdateTData：
傳入LoginModel對象M，返回int；
調用DAL.ExecuteNonQuery更新Login表;


刪除數據DeleteData：
傳入LoginModel對象M，返回int；
調用DAL.ExecuteNonQuery從Login表刪除數據;


登錄方法Login：
調用DAL.ExecuteNonQuery從Login表返回匹配的記錄；
返回類型為DataTable；


查詢所有用戶，返回DataTable；
查詢單個用戶，根據ID返回DataTable；

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三 實體層

using System; using System.Collections.Generic; using System.Text;namespace SystemModel {public class LoginModel{public LoginModel(){}private int _ID;public int ID{get { return _ID; }set { _ID = value; }}private string _LoginName;public string LoginName{get { return _LoginName; }set { _LoginName = value; }}private string _LoginPassword;public string LoginPassword{get { return _LoginPassword; }set { _LoginPassword = value; }}} } ?

四 前端

login.aspx <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Login.aspx.cs" Inherits="_Default" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"><title>登錄界面|- 51aspx.com</title> </head> <body style="text-align: center"><form id="form1" runat="server"><asp:ScriptManager ID="ScriptManager1" runat="server" /><asp:Panel ID="Panel1" runat="server" Height="13px" Width="359px" style="font-weight: bold; font-size: small"><table style="width: 372px"><tr><td style="width: 81px"><asp:Label ID="Label1" runat="server" Text="用戶名"></asp:Label></td><td style="width: 146px"><asp:TextBox ID="TextBox1" runat="server" Height="18px"></asp:TextBox></td><td style="width: 116px"><asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="TextBox1"ErrorMessage="用戶名不能為空" ForeColor="DarkGray" Width="126px"></asp:RequiredFieldValidator></td></tr><tr><td style="width: 81px; height: 28px;"><asp:Label ID="Label2" runat="server" Text="密 碼"></asp:Label></td><td style="width: 146px; height: 28px;"><asp:TextBox ID="TextBox2" runat="server" TextMode="Password" Width="149px"></asp:TextBox></td><td style="width: 116px; height: 28px;"><asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="TextBox2"ErrorMessage="密碼不能為空" ForeColor="DarkGray"></asp:RequiredFieldValidator></td></tr><tr><td style="width: 81px"></td><td style="width: 146px"><asp:LinkButton ID="LinkButton1" runat="server" Font-Underline="False" ForeColor="Black"OnClick="LinkButton1_Click">登 錄</asp:LinkButton><asp:LinkButton ID="LinkButton2" runat="server" Font-Underline="False" ForeColor="Black"OnClick="LinkButton2_Click">重 置</asp:LinkButton></td><td style="width: 116px"></td></tr></table></asp:Panel></form> </body> </html>
login.aspx.cs using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using SystemModel; using SystemBLL;public partial class _Default : System.Web.UI.Page {protected void Page_Load(object sender, EventArgs e){}protected void LinkButton1_Click(object sender, EventArgs e){DataTable table1 = BLL.Login(this.TextBox1.Text, this.TextBox2.Text);if (table1.Rows.Count > 0){Page.ClientScript.RegisterStartupScript(Page.GetType(), "message", "<script language='javascript' defer>alert('登錄成功！');</script>");Response.Redirect("test.aspx");}else{Page.ClientScript.RegisterStartupScript(Page.GetType(), "message", "<script language='javascript' defer>alert('登錄失敗！');</script>");}}protected void LinkButton2_Click(object sender, EventArgs e){this.TextBox1.Text = null;this.TextBox2.Text = null;} } ?

五 web.config

<span style="white-space:pre"> </span><connectionStrings><add name="db" connectionString="Data Source=ORCL;User Id=scott;Password=123dd654ca"/></connectionStrings>
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