限制网站频繁访问
执行存储过程 procAccessIP(@ip ,@seconds,@maxTimes) 返回 0 或 1 假如设置 procAccessIP('127.0.0.1' ,5,5) 表示 5秒钟内 如果访问此存储过程超出5次,则返回1,否则返回0 无 CREATE TABLE [dbo].[Zz_AccessIP]([IP] [nvarchar](50) NOT NULL,[FirstDateTim
执行存储过程 procAccessIP(@ip ,@seconds,@maxTimes) 返回 0 或 1假如设置 procAccessIP('127.0.0.1' ,5,5) 表示 5秒钟内 如果访问此存储过程超出5次,则返回1,否则返回0
CREATE TABLE [dbo].[Zz_AccessIP]( [IP] [nvarchar](50) NOT NULL, [FirstDateTime] [datetime] NOT NULL, [LastDateTime] [datetime] NOT NULL, [Times] [int] NOT NULL, CONSTRAINT [PK_Zz_AccessIP] PRIMARY KEY CLUSTERED ( [IP] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] ) ON [PRIMARY] GO ALTER TABLE [dbo].[Zz_AccessIP] ADD CONSTRAINT [DF_Zz_AccessIP_FirstDateTime] DEFAULT (getdate()) FOR [FirstDateTime] GO ALTER TABLE [dbo].[Zz_AccessIP] ADD CONSTRAINT [DF_Zz_AccessIP_LastDateTime] DEFAULT (getdate()) FOR [LastDateTime] GO ALTER TABLE [dbo].[Zz_AccessIP] ADD CONSTRAINT [DF_Zz_AccessIP_Times] DEFAULT ((0)) FOR [Times] GO
--默认5秒钟内访问超出5次,返回1,否则返回0 CREATE proc [dbo].[procAccessIP] ( @ip nvarchar(50), @seconds int = 5, --多长时间内 默认5秒钟内 @maxTimes int = 5 --限制最多访问的次数,默认 5次 ) as begin --删除5秒钟内没有访问过的 delete from [Zz_AccessIP] where DateDiff(second,LastDateTime,GetDate()) > @seconds and IP = @ip; --删除5秒钟内访问次数少于5 的 delete from [Zz_AccessIP] where DateDiff(second,FirstDateTime,GetDate()) > @seconds and Times < @maxTimes and IP = @ip; --插入IP 或 更新 某IP 访问的次数 declare @existsIp int; select @existsIp = count(IP) from [Zz_AccessIP] where IP= @ip; if @existsIp = 0 insert into [Zz_AccessIP](IP) values(@ip); else update [Zz_AccessIP] set Times = Times +1,LastDateTime = GETDATE() where IP = @ip; --获取某IP 5 秒钟内访问的次数 是否 大于 5 declare @count int; select @count = COUNT(IP) from [Zz_AccessIP] where IP = @ip and DateDiff(second,LastDateTime,GetDate()) < @seconds and Times > @maxTimes ; return @count; end GO
DECLARE @return_value int EXEC @return_value = [dbo].[procAccessIP] @ip = N'127.0.0.1', @seconds = 5, @maxTimes = 5 SELECT 'Return Value' = @return_value GO

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