java过滤sql关键字的正则替换掉
最新回答
微浅笑°
2026-10-21 05:59:34
可以在C#中这样做：Regexregex = newRegex(@"]*>[^");
stringcleanedHtml = regex.Replace(html, "");
可是我并不想再写个循环去遍历每条记录，然后保存每条记录，我想在数据库中一步到位，而sql只提供了简单的replace函数，这个函数明显不能达到咱的要求，那就去写一个自定义函数吧。
函数
源代码
如下：CREATE functiondbo.regexReplace(@source ntext,--原
字符串
@regexp varchar(1000),--正则表达式@replace varchar(1000),--替换值@globalReplace bit=1,--是否是全局替换@ignoreCase bit=0 --是否忽略大小写)returnS varchar(1000)ASbegin
declare@hr intege
declare@objRegExp integer
declare@result varchar(5000)exec@hr =sp_OACreate'VBScript.RegExp',@objRegExp OUTPUT
IF@hr <>0 begin
exec@hr =sp_OADestroy@objRegExp
returnnullend
exec@hr =sp_OASetProperty@objRegExp,'Pattern',@regexp
IF@hr <>0 begin
exec@hr =sp_OADestroy@objRegExp
returnnullend
exec@hr =sp_OASetProperty@objRegExp,'Global',@globalReplace
IF@hr <>0 begin
exec@hr =sp_OADestroy@objRegExp
returnnullend
exec@hr =sp_OASetProperty@objRegExp,'IgnoreCase',@ignoreCase
IF@hr <>0 begin
exec@hr =sp_OADestroy@objRegExp
returnnullend
exec@hr =sp_OAMethod@objRegExp,'Replace',@result OUTPUT,@source,@replace
IF@hr <>0 begin
exec@hr =sp_OADestroy@objRegExp
returnnullend
exec@hr =sp_OADestroy@objRegExp
IF@hr <>0 begin
returnnullend
return@result
end
需要注意的是，即使写好了这个函数，也并不能马上使用。执行这个函数时可能会出现以下的错误：Msg 15281, Level 16, State 1, Line 1
SQL Server blocked access to procedure 'sys.sp_OACreate' of component 'Ole Automation Procedures' because this component is turned off as part of the security configuration for this server. A system administrator can enable the use of 'Ole Automation Procedures' by using sp_configure. For more information about enabling 'Ole Automation Procedures', see "Surface Area Configuration" in SQL Server Books Online.
这是因为未开启Ole Automation Procedures选项，MSDN中的Ole Automation Procedures选项。执行下面的语句开启这个选项：sp_configure'show advanced options',1;GO
RECONFIGURE;GOsp_configure'Ole Automation Procedures',1;GO
RECONFIGURE;GO
所有的准备工作都已经做好，那就试验一下吧。
Example1：忽略大小写并替换selectdbo.regexReplace('123456',']*>[^','',1,1)
Example2: 使用贪婪匹配
html代码：
Also Available - Smith & Hogan: Criminal Law Cases & Materials 10th ed
There is, as ever, detailed analysis of the many recent case developments, in particular,
a revision of the chapter dealing with secondary liability and joint enterprise.
调用代码：selectdbo.regexReplace(html,']*>(.|\n)*?','',1,1)
Example3：去除html标签selectdbo.regexReplace('
Key Contact:
Mr Jack, Zhou
General Manager
Mr Adu, Ho
Marketing Director
Overseas Sales
MsWinny, Luo
Sales Manager
Overseas Sales',']*>','',1,0)
Example4：数据库字段值替换updateBooks。
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