/// <summary>
/// 根据操作员名称和密码获取操作员实体
/// </summary>
/// <param name="name">操作员名称</param>
/// <param name="pwd">操作员密码</param>
/// <returns>操作员实体</returns>
public Model.Operator GetOperatorInfoByName(string name, string pwd)
{
//SQL命令
string sqltxt = string.Format("Select Id, OperatorName, Password, RightsList, State From Operator Where OperatorName = ‘{0}‘ And Password = ‘{1}‘", name, pwd);
//创建操作员实体
Model.Operator tmpOperator = new Model.Operator();
// 转换数据库存储的 二进制数据为 Byte[] 数组 以便进而转换为操作员权限集合
// 从配置文件读取连接字符串
string connectionString = ConfigurationManager.ConnectionStrings["SQLSERVER"].ConnectionString;
// 执行 SQL 命令
using (SqlConnection conn = new SqlConnection(connectionString))
{
SqlCommand cmd = new SqlCommand(sqltxt, conn);
conn.Open();
using (SqlDataReader myReader = cmd.ExecuteReader(
CommandBehavior.CloseConnection |
CommandBehavior.SingleResult |
CommandBehavior.SingleRow))
{
if (myReader.Read())
{
//将数据集转换成实体集合
tmpOperator.Id = Convert.ToInt32(myReader["Id"]);
tmpOperator.ModelName = Convert.ToString(myReader["OperatorName"]);
tmpOperator.Password = Convert.ToString(myReader["Password"]);
tmpOperator.State = Convert.ToBoolean(myReader["State"]);
// 读取权限集合
System.Data.SqlTypes.SqlBytes bytes = myReader.GetSqlBytes(3); // 只能指定列序号
// 将流反序列化为权限集合对象
BinaryFormatter bf = new BinaryFormatter();
if (!bytes.IsNull)
tmpOperator.RightsCollection = (bf.Deserialize(bytes.Stream) as Dictionary<string, Model.Rights>);
//else
// throw new Exception(string.Format("操作员 [{0}] 没有任何权限，禁止登录！", tmpOperator.ModelName));
}
else
//如果没有读取到内容则抛出异常
throw new Exception("登录名称或用户密码不正确！");
}
}
// 如果操作员已经被禁用
if (!tmpOperator.State)
throw new Exception(string.Format("操作员 [{0}] 已被禁用，请与管理员联系！", tmpOperator.ModelName));
// 返回结果
return tmpOperator;
}
/// <summary>
/// 添加操作员
/// </summary>
/// <param name="addOperator">要添加的操作员实体</param>
/// <returns>True:成功/False:失败</returns>
public bool AddOperator(Model.Operator addOperator)
{
// 验证密码长度
if (addOperator.Password.Trim().Length < 6)
throw new Exception("用户密码长度不能小于六位！");
// 转换操作员权限集合为数据库可存取的 Byte[] 数组
MemoryStream ms = new MemoryStream();
BinaryFormatter bf = new BinaryFormatter();
bf.Serialize(ms, addOperator.RightsCollection);
byte[] rigthsByteArray = new byte[(int)(ms.Length)];
ms.Position = 0;
ms.Read(rigthsByteArray, 0, (int)(ms.Length));
ms.Close();
// 拼接 SQL 命令
string sqlTxt = "Insert Into Operator (OperatorName, Password, RightsList, State) Values "
"(@OperatorName, @Password, @RightsList, @State)";
// 从配置文件读取连接字符串
string connectionString = ConfigurationManager.ConnectionStrings["SQLSERVER"].ConnectionString;
// 执行 SQL 命令
using (SqlConnection conn = new SqlConnection(connectionString))
{
SqlCommand cmd = new SqlCommand(sqlTxt, conn);
SqlParameter prm1 = new SqlParameter("@OperatorName", SqlDbType.NVarChar, 50);
prm1.Value = addOperator.ModelName;
SqlParameter prm2 = new SqlParameter("@Password", SqlDbType.NVarChar,50);
prm2.Value = addOperator.Password;
SqlParameter prm3 = new SqlParameter("@RightsList", SqlDbType.VarBinary, rigthsByteArray.Length,
ParameterDirection.Input, false, 0, 0, null, DataRowVersion.Current, rigthsByteArray);
SqlParameter prm4 = new SqlParameter("@State", SqlDbType.Bit);
prm4.Value = addOperator.State;
cmd.Parameters.AddRange(new SqlParameter[] { prm1, prm2, prm3, prm4 });
conn.Open();
if (cmd.ExecuteNonQuery() >= 1)
return true;
else
return false;
}
}
/// <summary>
/// 删除操作员
/// </summary>
/// <param name="id">要删除的操作员 ID</param>
/// <returns>True:成功/False:失败</returns>
public bool DeleteOperatorByID(int id)
{
// 删除单个信息 SQL 命令
string sqlTxt = string.Format("Delete From Operator Where Id = {0}", id);
// 创建 SQL 执行对象
DBUtility.AbstractDBProvider dbProvider = DBUtility.AbstractDBProvider.Instance();
// 执行 删除操作
int rowsAffected;
dbProvider.RunCommand(sqlTxt, out rowsAffected);
if (rowsAffected >= 1)
return true;
else
return false;
}
/// <summary>
/// 修改操作员
/// </summary>
/// <param name="currentOperator">要修改的操作员实体</param>
/// <returns>True:成功/False:失败</returns>
public bool ModifyOperator(Model.Operator currentOperator)
{
// 验证密码长度
if (currentOperator.Password.Trim().Length < 6)
throw new Exception("用户密码长度不能小于六位！");
// 转换操作员权限集合为数据库可存取的 Byte[] 数组
MemoryStream ms = new MemoryStream();
BinaryFormatter bf = new BinaryFormatter();
bf.Serialize(ms, currentOperator.RightsCollection);
byte[] rigthsByteArray = new byte[(int)(ms.Length)];
ms.Position = 0;
ms.Read(rigthsByteArray, 0, (int)(ms.Length));
ms.Close();
// 拼接 SQL 命令
string sqlTxt = "Update Operator Set OperatorName = @OperatorName, "
"Password = @Password, RightsList = @RightsList, State = @State Where Id = @Id";
// 从配置文件读取连接字符串
string connectionString = ConfigurationManager.ConnectionStrings["SQLSERVER"].ConnectionString;
// 执行 SQL 命令
using(SqlConnection conn = new SqlConnection(connectionString))
{
SqlCommand cmd = new SqlCommand(sqlTxt, conn);
SqlParameter prm1 = new SqlParameter("@OperatorName", SqlDbType.NVarChar, 50);
prm1.Value = currentOperator.ModelName;
SqlParameter prm2 = new SqlParameter("@Password", SqlDbType.NVarChar,50);
prm2.Value = currentOperator.Password;
SqlParameter prm3 = new SqlParameter("@RightsList", SqlDbType.VarBinary, rigthsByteArray.Length,
ParameterDirection.Input, false, 0, 0, null, DataRowVersion.Current, rigthsByteArray);
SqlParameter prm4 = new SqlParameter("@State", SqlDbType.Bit);
prm4.Value = currentOperator.State;
SqlParameter prm5 = new SqlParameter("@Id", SqlDbType.Int);
prm5.Value = currentOperator.Id;
cmd.Parameters.AddRange(new SqlParameter[] { prm1, prm2, prm3, prm4, prm5 });
conn.Open();
if (cmd.ExecuteNonQuery() >= 1)
return true;
else
return false;
}
}
/// <summary>
/// 获取所有操作员信息
/// </summary>
/// <returns>操作员实体集合</returns>
public Dictionary<string, Model.Operator> GetAllOperatorInfo()
{
//SQL命令
string sqltxt = "Select Id, OperatorName, Password, RightsList, State From Operator";
//创建操作员实体集合
Dictionary<string, Model.Operator> operatorCollection = newDictionary<string, Model.Operator>();
//定义操作员实体
Model.Operator tmpOperator = null;
// 转换数据库存储的 二进制数据为 Byte[] 数组 以便进而转换为操作员权限集合
// 从配置文件读取连接字符串
string connectionString = ConfigurationManager.ConnectionStrings["SQLSERVER"].ConnectionString;
// 执行 SQL 命令
using (SqlConnection conn = new SqlConnection(connectionString))
{
SqlCommand cmd = new SqlCommand(sqltxt, conn);
conn.Open();
using (SqlDataReader myReader = cmd.ExecuteReader(
CommandBehavior.CloseConnection))
{
while (myReader.Read())
{
// 创建操作员实体
tmpOperator = new Model.Operator();
//将数据集转换成实体集合
tmpOperator.Id = Convert.ToInt32(myReader["Id"]);
tmpOperator.ModelName = Convert.ToString(myReader["OperatorName"]);
tmpOperator.Password = Convert.ToString(myReader["Password"]);
tmpOperator.State = Convert.ToBoolean(myReader["State"]);
// 读取权限集合
System.Data.SqlTypes.SqlBytes bytes = myReader.GetSqlBytes(3); // 只能指定列序号
// 将流反序列化为权限集合对象
BinaryFormatter bf = new BinaryFormatter();
if (!bytes.IsNull)
tmpOperator.RightsCollection = (bf.Deserialize(bytes.Stream) as Dictionary<string, Model.Rights>);
// 添加到操作员实体集合
operatorCollection.Add(tmpOperator.ModelName, tmpOperator);
}
}
}
// 返回结果
return operatorCollection;
}
/// <summary>
/// 根据操作员名称校验操作员是否存在
/// </summary>
/// <param name="operatorName">操作员名称</param>
/// <returns>True:存在/Flase:不存在</returns>
public bool CheckOperatorExist(string operatorName)
{
//创建查询信息的 SQL
string sqlTxt = string.Format(
"Select Count(*) From Operator Where OperatorName = ‘{0}‘",
operatorName);
//创建SQL执行对象
DBUtility.AbstractDBProvider dbProvider = DBUtility.AbstractDBProvider.Instance();
//执行查询操作
int result = Convert.ToInt32(dbProvider.RunCommand(sqlTxt));
if (result >= 1)
return true;
else
return false;
}
#endregion
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