三层架构下针对运用存储过程的异常处理方法

最近几个月一直在做报价系统(三层架构，原先是6层架构，由于不好维护，工作量大，后改为三层），需要把报价用户的每一次对数据库的操作都要以日志的记录，方便供应商和维护人员查询操作记录，现举一个发布报价的例子(用存储过程书写)

1,存储过程(可以看到此存储过程用到事物)如下：

USE [xb_quotation_dev]
GO

/****** Object:  StoredProcedure [dbo].[usp_publishtodayQuotation]    Script Date: 02/04/2012 13:46:03 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

CREATE PROCEDURE [dbo].[usp_publishtodayQuotation] 
 @PriceDate Datetime,
 @AreaID    int,
 @TypeId    int
AS
BEGIN
    SET NOCOUNT ON;
    DECLARE @ERRORSUM  INT =0;
    Begin Tran
        ---把MD_Prices表中不是今天的数据删除
        SET @ERRORSUM=-1;
            DELETE FROM MD_Prices WHERE CONVERT(VARCHAR(10),PriceDate,120)<>CONVERT(VARCHAR(10),@PriceDate,120)
                IF(@@ERROR<>0) GOTO     ERROR_HANDLE;
        --把MD_PriceCache表中不是今天的数据删除
        SET @ERRORSUM=-2;
            DELETE FROM MD_PriceCache WHERE CONVERT(VARCHAR(10),PriceDate,120)<>CONVERT(VARCHAR(10),@PriceDate,120)
                IF(@@ERROR<>0) GOTO        ERROR_HANDLE;
        SET @ERRORSUM=-3;--添加到今日报价出差
        create table #tbArea(AreaID int)
        Insert into #tbArea  SELECT  AreaId FROM MD_Area WHERE QuotationType=@AreaID
        create table #tbGoods(ID int)
        Insert into #tbGoods SELECT ID FROM MD_Goods WHERE TypeId = @TypeId
        INSERT INTO #tbArea VALUES(@AreaID)
        INSERT INTO MD_Prices SELECT * FROM MD_PriceCache   WHERE CONVERT(VARCHAR(10),PriceDate,120)=CONVERT(VARCHAR(10),@PriceDate,120) AND AreaID IN (SELECT AreaID FROM #tbArea) AND GoodsId IN( SELECT ID FROM #tbGoods)
            IF(@@ERROR<>0) GOTO ERROR_HANDLE;
        SET @ERRORSUM=-4;--更新报价日志数据错误
        UPDATE MD_PriceGenerationLog SET  publishedDate=GETDATE(),publishedUserName=-1  where CONVERT(varchar(10),generateDate,120)=CONVERT(varchar(10),getdate(),120)
           drop table #tbArea;
       drop table #tbGoods;    
       commit tran;
       return 0;
ERROR_HANDLE:
rollback tran;
RETURN @ERRORSUM;
END




GO

2，下面分别在DAL,BLL,UI实现此功能

DAL层：

   public class OperateLog
    {
        public OperateLog()
        {
        }
        public void AddSysLog(Model.SysModelLog model)
        {
            string insertSql = "INSERT INTO MD_SysLog([AdminUserId],[AdminUserName],[Content],[CreateTime],[LogType]) VALUES(@AdminUserID,@AdminUserName,@Content,GETDATE(),@LogType)";
            SqlParameter[] sp = {
                                    new SqlParameter("@AdminUserID",model.AdminUserId),
                                    new SqlParameter("@AdminUserName",model.AdminUserName),
                                    new SqlParameter("@Content",model.Content),
                                    new SqlParameter("@LogType",model.LogType)
                                };
            DBHelperSQL.ExcuteNonQuery(insertSql, sp);
        }
    }

public class OperateQuotation
    {
        public OperateQuotation() { }
        public int PublishQuotation(string PriceDate, int areaID, int typeID)
        {
            string storeName = "usp_publishtodayQuotation";
            SqlParameter[] sp = {
                                    new SqlParameter("@PriceDate",PriceDate),
                                    new SqlParameter("@AreaID",areaID),
                                    new SqlParameter("@TypeId",typeID)
                                };
            return DBHelperSQL.RunStoreProce(storeName, sp);
        }
    }

BLL层

 public  class OperateLog
    {
       public readonly DAL.OperateLog dal = new DAL.OperateLog();
       public OperateLog() { }
       public void AddSysLog(string content,int userID,short shTypeID,string userName)
       {
           Model.SysModelLog model = new Model.SysModelLog();
           model.AdminUserId = userID;
           model.AdminUserName = userName;
           model.LogType = shTypeID;
           model.Content = content;
           dal.AddSysLog(model);
       }
    }

 public class OperateQuotation
    {
        public readonly DAL.OperateQuotation dal = new DAL.OperateQuotation();
        public readonly BLL.OperateLog dalLog = new BLL.OperateLog();
        public OperateQuotation() { }

        public bool PublishQutation(string priceDate, int areaID, int typeID, int userID, string userName)
        {
            try
            {

                int rowsAffects = dal.PublishQuotation(priceDate, areaID, typeID);
                if (rowsAffects == 0) { return true; }
                else if (rowsAffects == -1) { dalLog.AddSysLog("把MD_Prices表中不是今天的数据删除出错！", userID, -1, userName); return false; }
                else if (rowsAffects == -2) { dalLog.AddSysLog("把MD_PriceCache表中不是今天的数据删出错!", userID, -2, userName); return false; }
                else if (rowsAffects == -3) { dalLog.AddSysLog("添加到今日报价出错!", userID, -3, userName); return false; }
                else if (rowsAffects == -4) { dalLog.AddSysLog("更新报价日志数据错误", userID, -4, userName); return false; }
                else
                {

                    return false;
                }
            }
            catch (Exception ex)
            {
                dalLog.AddSysLog(ex.StackTrace, userID, 1, userName);
                throw;
            }
        }
    }

UI层

 if (bll.PublishQutation("2012-02-03", 15, 1, -1, "打酱油"))
            {
                Response.Write("OK");
            }

Model层

public class SysModelLog
    {
        private int _id;
        private int _adminUserId;
        private string _adminUserName;
        private string _content;
        private int _logType;
        private DateTime _createDateTime;
        public int Id
        {
            get { return _id; }
            set { _id = value; }
        }
        public int AdminUserId
        {
            get { return _adminUserId; }
            set { _adminUserId = value; }
        }
        public string AdminUserName
        {
            get { return _adminUserName; }
            set { _adminUserName = value; }
        }
        public string Content
        {
            get { return _content; }
            set { _content = value; }
        }
        public int LogType
        {
            get { return _logType; }
            set { _logType = value; }
        }
        public DateTime CreateDateTime
        {
            get { return _createDateTime; }
            set { _createDateTime = value; }
        }
    }

可以看到在发布报价时候 时刻记录了报价发布情况！