asp.net三层架构连接Oracle 11g详解

asp.net三层架构连接Oracle 11g

连接Oracle时使用微软的Oracle连接组件；

一 DAL层

using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;
using System.Data;
using System.Data.OracleClient;

namespace SystemDAL
{
public class DAL
{
//连接字符串
public static string connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["db"].ToString();

public DAL()
{
//connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["db"].ToString();
}

/// <summary>
/// 执行单条语句
/// </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;

}

}
}

类DAL；

执行单条语句ExecuteNonQuery：

传入sql语句，返回值int；

打开Oracle连接，构造Oracle命令对象，设置命令对象的命令文本等于传入的sql；

执行sql，返回执行的int型结果；

获取数据表ExecuteDataTable:

传入sql语句，返回数据表；

打开Oracle连接；

构造Oracle命令对象，设置命令对象的命令文本等于传入的sql；

new一个Oracle适配器对象，设置适配器对象的SelectCommand等于命令对象；

调用适配器对象的Fill方法填充数据表对象，返回数据表对象；

二 BLL层

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>
/// 删除方法
/// </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>
/// 登录方法
/// </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>
/// 查询所有用户
/// </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>
/// 查询单个用户
/// </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；

类BLL;

插入数据InsertData：

传入LoginModel对象M，返回int；

调用DAL.ExecuteNonQuery在Login表中插入值；

修改数据UpdateTData：

传入LoginModel对象M，返回int；

调用DAL.ExecuteNonQuery更新Login表;

删除数据DeleteData：

传入LoginModel对象M，返回int；

调用DAL.ExecuteNonQuery从Login表删除数据;

登录方法Login：

调用DAL.ExecuteNonQuery从Login表返回匹配的记录；

返回类型为DataTable；

查询所有用户，返回DataTable；

查询单个用户，根据ID返回DataTable；

三 实体层

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>登录界面|- 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="用户名"></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="用户名不能为空" ForeColor="DarkGray" Width="126px"></asp:RequiredFieldValidator></td>
</tr>
<tr>
<td style="width: 81px; height: 28px;">
<asp:Label ID="Label2" runat="server" Text="密    码"></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="密码不能为空" 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 录</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('登录成功！');</script>");
Response.Redirect("test.aspx");
}
else
{
Page.ClientScript.RegisterStartupScript(Page.GetType(), "message", "<script language='javascript' defer>alert('登录失败！');</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>