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简单的oracle存储过程

Jun 07, 2016 pm 03:38 PM
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1、 oracle 存储过程以及 asp.NET 中调用存储过程,实现一个简单的登录功能,只是作为学习的,所以处理可能不太合理。 ① 在 PL/SQLDeveloper 中编写存储过程 新建 Procedures ,一个简单的登录检查存储过程代码如下: createorreplaceprocedureuser_login(s

1、oracle存储过程以及asp.NET中调用存储过程,实现一个简单的登录功能,只是作为学习的,所以处理可能不太合理。

① PL/SQL Developer中编写存储过程

新建Procedures,一个简单的登录检查存储过程代码如下:

create or replace procedure user_login(sname in nvarchar2 ,spassword in nvarchar2, ReturnValue out number)

 is --变量声明

  Rname nvarchar2(20);

  Rpassword nvarchar2(50);

begin 

 ReturnValue :=0; --赋初值

  select username into Rname from userinfo where username=sname;

  if Rname is not null then

    ReturnValue:=1;--用户名存在

    select userpassword into Rpassword from userinfo where username=sname and userpassword=spassword;

      if Rpassword is not null then

         ReturnValue:=2;--登陆成功              

      else ReturnValue:=1;--用户名存在,密码不正确

        return ;

        end if;

        else ReturnValue:=0;--用户不存在

          end if;    

    exception 

     when no_data_found then

       DBMS_OUTPUT.put_line('没有找到数据'); 

end;

② PL/SQL DeveloperSQL窗口中调用存储过程

declare --变量声明

        ReturnValue number(10);

begin

 user_login('faith','faith',ReturnValue);

   if ReturnValue=0 then

      DBMS_OUTPUT.put_line('不存在此用户');

     elsif ReturnValue=1 then

           DBMS_OUTPUT.put_line('存在用户,但密码不正确');     

     else 

       DBMS_OUTPUT.put_line('登录成功!!!');

     end if;

end;

③ VS2012中调用存储过程

OracleHelper.cs文件中:

public static void iRunProc(string procName, OracleParameter[] paras)

        {           

            OracleConnection conn=new OracleConnection(OracleHelper.strConn);

            if (conn.State == ConnectionState.Closed)

            {

                conn.Open();

            }

            OracleCommand cmd = new OracleCommand(procName, conn);

            cmd.CommandType = CommandType.StoredProcedure;

            if (paras != null)

            {

                for (int i = 0; i 

                {

                    OracleParameter parameter = paras[i];

                    cmd.Parameters.Add(parameter);

                }

            }

            int result = cmd.ExecuteNonQuery();

            cmd.ExecuteNonQuery();

        }

DAL层的webtestDal.cs文件中

 public static int loginByProc(string name,string password,string procName)

        {

            OracleParameter[] parameters ={

                                              new OracleParameter("sname", OracleType.NVarChar, 20),

                                              new OracleParameter("spassword", OracleType.NVarChar, 50),

                                              new OracleParameter("ReturnValue", OracleType.Number, 10)

                                         };

            parameters[0].Value = name;

            parameters[1].Value = password;

            //parameters[2].Value = 0;

            parameters[0].Direction = ParameterDirection.Input;

            parameters[1].Direction = ParameterDirection.Input;

            parameters[2].Direction = ParameterDirection.Output;

            try

            {

                OracleHelper.iRunProc(procName, parameters);

                int i = int.Parse(parameters[2].Value.ToString());

                return i;                  

            }

            catch (Exception e)

            {

                throw e;

            }

        }

BLL层的webtestBll.cs文件中

public static int loginByProc(string name, string password, string procName)

 {

     return webtestDal.loginByProc(name, password, procName);

}

在页面代码的登录按钮事件中

protected void btnSubmit_Click(object sender, EventArgs e)
        {
            string name = this.txtName.Text.Trim();
            string password = this.txtPassword.Text.Trim();
            //调用存储过程,判断是否登录成功
            if (webtestBll.loginByProc(name, password, "user_login")==2)//存储过程输出2表示登录成功
            {//登录成功,保存用户名和密码的cookie
                HttpCookie mycookie = new HttpCookie("loginCookie");
                mycookie.Values.Add("cname", name);
                mycookie.Values.Add("cpassword", password);
                mycookie.Expires = DateTime.Now.AddHours(4);//cookie的生命期
                Response.AppendCookie(mycookie);
                Response.Redirect("userinfo.aspx");
            }
            else if (webtestBll.loginByProc(name, password, "user_login") == 1)
            {
               // Response.Write("");
                RegisterClientScriptBlock("msg", "<script>alert(\"密码错误!\");</script>");
            }
            else
                RegisterClientScriptBlock("msg", "<script>alert(\"无法认证!\");</script>");
        }

2、登录之后,传递cookie

先获取登录界面的cookie值(代码如上)

将登录页面的cookie值传给跳转页面

protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                DataTable dt = webtestBll.getAll();
                userInfoGrid.DataSource = dt;
                if (dt != null)
                    userInfoGrid.DataBind();
                
                HttpCookie mycookie = null;
                if (Request.Cookies.Get("loginCookie") != null)
                {//当用户登录了时,获取页面传来的cookie值
                    mycookie = Request.Cookies.Get("loginCookie");
                    this.txtLoginName.Text = mycookie.Values["cname"].ToString();
                    this.txtLoginPassword.Text = mycookie.Values["cpassword"].ToString();
                }
                else
                {//cookie过期或者没登录
                    Response.Redirect("userLogin.aspx?errorMsg=您还没登陆,请先登陆!");
                }
            }
        }

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