[SqlServer]用户注册、登录、修改密码存储过程实例

--添加会员存储过程

CREATE PROCEDURE Joinmymy

(

@useremail VARCHAR(50),

@userpwd VARCHAR(50),

@username NVARCHAR(50),

@usersex INT,

@userquestion int,

@useranswer NVARCHAR(50),

@userid int output

)

AS

IF EXISTS(SELECT * FROM MymyUsers WHERE UserName=@username)--先判断用户是否存在

BEGIN

SELECT @userid=-1 --如果存在则返回-1

END

ELSE --如果不存在则执行注册插入

BEGIN

INSERT INTO MymyUsers

(

UserEmail,

UserPWD,

UserName,

UserSex,

UserQuestion,

UserAnswer

)

VALUES

(

@useremail,

@userpwd,

@username,

@usersex,

@userquestion,

@useranswer

)

SELECT

@userid =SCOPE_IDENTITY()--获取刚注册分配的用户id

FROM MymyUsers

END

GO

--会员登录存储过程

CREATE PROCEDURE Loginmymy

(

@username NVARCHAR(50),

@userpwd VARCHAR(50),

@userid int output

)

AS

if EXISTS(SELECT * FROM MymyUsers WHERE UserName=@username )--判断用户名为@username的用户是否存在

begin

select @userid=UserId --判断登录信息是否正确,并返回@userid.不正确则返回空值

from MymyUsers

where UserName=@username

and UserPwd=@userpwd

end

else

begin

select @userid=-1 --如果不存在则返回-1

end

GO

--用户修改密码

CREATE PROCEDURE UpdatePwd

(

@userid int,

@oldpwd VARCHAR(50),

@newpwd VARCHAR(50),

@result int output

)

AS

update MymyUsers set UserPwd=@newpwd

where UserId=@userid and
UserPwd=@oldpwd

IF @@ROWCOUNT >= 1 --如果影响行数大于或等于1则表示修改成功

SELECT

@result=1

ELSE SELECT

@result=0

GO

--删除文章

CREATE PROCEDURE DeleteArticle

(

@newsid INT,

@result INT OUTPUT

)

AS

DELETE

FROM

Article

WHERE

NewsId=@newsid

IF @@ROWCOUNT >= 1

SELECT

@result=1

ELSE SELECT

@result=0

GO

//调用存储过程的方法如下：

　　　　/// <summary>

/// 用户注册提交方法，返回用户ID

/// </summary>

public int AddUser(string useremail, string pwd, string username）

{

SqlConnection myconnection = new SqlConnection(ConfigurationManager.AppSettings["ConnectionString"]);

SqlCommand mycommand = new SqlCommand("USERADD", myconnection);　　//sqlcommand指定存储过程名称

mycommand.CommandType = CommandType.StoredProcedure;　　　　　　　　//sqlcommand指定的类型

//给存储过程添加参数

//用户EMAIL

SqlParameter paramuseremail = new SqlParameter("@useremail", SqlDbType.NVarChar, 50);

paramuseremail.Value = useremail;

mycommand.Parameters.Add(paramuseremail);

string userpwd = OtherDB.PwdEncrypt(pwd + useremail);

//用户密码

SqlParameter paramuserpwd = new SqlParameter("@userpwd", SqlDbType.NVarChar, 50);

paramuserpwd.Value = userpwd;

mycommand.Parameters.Add(paramuserpwd);

//用户妮称

SqlParameter paramusername = new SqlParameter("@username", SqlDbType.NVarChar, 50);

paramusername.Value = username;

mycommand.Parameters.Add(paramusername);

//参数输出，添加成功后返回用户ID

SqlParameter pramuserid = new SqlParameter("@userid", SqlDbType.Int, 4);

pramuserid.Direction = ParameterDirection.Output;　　　//指定为输出类型

mycommand.Parameters.Add(pramuserid);

//打开连接，执行操作

myconnection.Open();

IAsyncResult result = mycommand.BeginExecuteNonQuery();

mycommand.EndExecuteNonQuery(result);

myconnection.Close();

//活动用户妮称（通过存储过程的输出参数）

return (pramuserid.Value == null ? 0 : Int32.Parse(pramuserid.Value.ToString()));

}

//返回一个sqlDatareader

创建TeamList存储过程　

　　　　create procedure TeamList

(

@userid int

)

as

select * from Team where Uid = @userid

go

public SqlDataReader DrTeamList(string userid)

{

SqlConnection myconnection = new SqlConnection(ConfigurationManager.AppSettings["ConnectionString"]);

SqlCommand mycommand = new SqlCommand("TeamList", myconnection);

//指定操作类型为存储过程

mycommand.CommandType = CommandType.StoredProcedure;

//添加Id参数到存储过程

SqlParameter pramuserid = new SqlParameter("@userid", SqlDbType.Int, 4);

pramuserid.Value = Int32.Parse(userid);

mycommand.Parameters.Add(pramuserid);

//打开连接并执行操作

myconnection.Open();

SqlDataReader result = mycommand.ExecuteReader(CommandBehavior.CloseConnection);

//返回结果

return result;

}