CSharp Oracle 登陆

=======后台Oracle存储过程================

1、创建表

--判读表存在先删除
begin
    EXECUTE IMMEDIATE 'DROP TABLE student';
    EXCEPTION WHEN OTHERS THEN NULL;
end;
/
create table student(
  stuId varchar(50) primary key not null,   --Id
  stuName varchar(50) not null,               --用户名
  stuPwd number(20) not null                  --密码(最后一个不能有逗号）
);
--插入数值
Insert into student values('001','张三',123);
Insert into student values('002','王五',123);
Insert into student values('003','李四',123);
Insert into student values('004','赵六',123);
commit;  --提交
--测试创建表成功
select * from student;

2、创建登陆函数
create or replace function funLogin(name in varchar2,pwd in number)
return varchar2
is
co number;
begin
    select count(*) into co from student
     where stuName=name and stuPwd=pwd;
    if co>1 then
       return '用户'||name||',登陆成功!';
    else
       return '用户'||name||',登陆失败!';
    end if;
end funLogin;
/

3、测试登陆函数
set serveroutput on; --显示输出信息
declare
  name varchar2(50):='张三';
  pwd number(20):=123;
  re varchar2(50);
begin
  select funLogin(name,pwd) into re from dual;
  dbms_output.put_line(re);
end;
/

=======前台程序代码======================

1、在Web.config配置登陆信息

<appSettings >
    <add key="linkOracle_01" value="Data Source=数据库;Persist Security Info=True;User ID=用户名;Password=密码;Unicode=True;" />
  </appSettings>

2、前台Login.aspx

3、后台代码Login.aspx.cs

引用添加NET命名空间

代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
//引用-》添加命名空间
using System.Data.OracleClient;
using System.Data;

namespace WebApplication1
{
    public partial class Login : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void btnLogin_Click(object sender, EventArgs e)
        {
            //用户名和密码可以从外部输入
            string name = txtName.Text.Trim(); ;
            int pwd = Convert.ToInt32(txtPwd.Text.Trim());

            string strConn = System.Configuration.ConfigurationManager.AppSettings["linkOracle_01"].ToString();
            OracleConnection conn = new OracleConnection(strConn);
            OracleCommand cmd = new OracleCommand("funLogin", conn);
            cmd.CommandType = CommandType.StoredProcedure;

            //参数
            OracleParameter pName = new OracleParameter("name", OracleType.VarChar, 50);
            pName.Value = name;
            pName.Direction = ParameterDirection.Input;
            OracleParameter pPwd = new OracleParameter("pwd", OracleType.Number, 20);
            pPwd.Value = pwd;
            pPwd.Direction = ParameterDirection.Input;
            //返回值名称可以re随便写
            OracleParameter pRe = new OracleParameter("re", OracleType.VarChar, 50);
            pRe.Direction = ParameterDirection.ReturnValue;

            cmd.Parameters.Add(pName);
            cmd.Parameters.Add(pPwd);
            cmd.Parameters.Add(pRe);

            conn.Open();
            cmd.ExecuteNonQuery();
            ScriptManager.RegisterStartupScript(this.btnLogin, btnLogin.GetType(),
                "re", "alert('" + pRe.Value.ToString() + "');", true);
            //或者这样注册 返回信息
            //Page.RegisterStartupScript("re", "<script>alert('" + pRe + "')</script>");
            conn.Close();
        }
    }
}