概念

正則表達式 是一種匹配輸入文本的模式。.Net框架提供了允許這種匹配的正則表達式引擎。模式由一個或多個字符、運算符和結構組成。

Regex 類

Regex 類用于表示一個正則表達式。下表列出了 Regex 類中一些常用的方法：

1 public bool IsMatch( string input ) 指示 Regex 構造函數中指定的正則表達式是否在指定的輸入字符串中找到匹配項。

2 public bool IsMatch( string input, int startat ) 指示 Regex 構造函數中指定的正則表達式是否在指定的輸入字符串中找到匹配項，從字符串中指定的開始位置開始。

3 public static bool IsMatch( string input, string pattern ) 指示指定的正則表達式是否在指定的輸入字符串中找到匹配項。

4 public MatchCollection Matches( string input ) 在指定的輸入字符串中搜索正則表達式的所有匹配項。

5 public string Replace( string input, string replacement ) 在指定的輸入字符串中，把所有匹配正則表達式模式的所有匹配的字符串替換為指定的替換字符串。

6 public string[] Split( string input ) 把輸入字符串分割為子字符串數組，根據在 Regex 構造函數中指定的正則表達式模式定義的位置進行分割。

例子

正則表達式的完全匹配

??public?override?void?DoJob(IJobExecutionContext?context,?ILifetimeScope?scope,?string[]?args){var?accountModuleMgmtService?=?scope.Resolve<IAccountModuleMgmtService>();//?取得所有使用過?BigCentral方案的帳號var?bigCentralModuleAccountList?=?accountModuleMgmtService.GetList(new?AccountModuleMgmtSearchViewModel(){bundleTypes?=?new?List<string>?{?BundleType.BigCentral,?BundleType.BigCRM,?BundleType.Feedback?}}).Select(m?=>?m.Account_Module_Mgmt.Account).Distinct();test//var?bigCentralModuleAccountList?=?new?List<string>();//bigCentralModuleAccountList.Add("S_Acct_90000618");Log($"bigCentralModuleAccountList.Count():?{bigCentralModuleAccountList.Count()}");//int?executingCount?=?0;int?completedCount?=?0;int?totalCount?=?bigCentralModuleAccountList.Count();void?LogProgress(){//Console.WriteLine($"{(completedCount?/?(decimal)totalCount).ToString("#0.00%")}??{new?{?executingCount,?completedCount?}.ToJsonString()}");Console.WriteLine($"{(completedCount?/?(decimal)totalCount).ToString("#0.00%")},?completedCount:?{completedCount}");}List<(Regex?pattern,?string?replacement,?bool?isHtml)>?replacePatternList?=?new?List<(Regex?pattern,?string?replacement,?bool?isHtml)>{(new?Regex(@"{{review_image_product_contact_link:(.*?)}}"),?"{{review_link_5_star:$1}}",?false),(new?Regex(@"{{review_feedback_image_product_contact_link:(.*?)}}"),?"{{review_link_5_star:$1}}",?false),(new?Regex(@"{{feedback_order_store_contact_link:(.*?)}}"),?"{{feedback_link_5_star:$1}}",?false),(new?Regex("{{image_product_name_link}}"),?"{{product_name}}",?false),(new?Regex("{{product_name_asin_link}}"),?"{{product_name_asin}}",?false),(new?Regex("(\\<img.*?style=['\"])([^\\>]+\\>)",?RegexOptions.IgnoreCase),?"$1max-width:?80%?!important;$2",?true),(new?Regex("(max-width:?80%?!important;)+",?RegexOptions.IgnoreCase),?"max-width:?80%?!important;",?true),?//?移除排程多次執行，重複加入的樣式};List<(Regex?pattern,?string?replacement,?bool?isHtml)>?GetEffectivePatterList(string?content,?bool?onlyText){var?effectivePatternList?=?replacePatternList.FindAll(p?=>?p.isHtml?==?(onlyText???false?:?p.isHtml)).FindAll(p?=>?p.pattern.IsMatch(content));return?effectivePatternList;}bool?IsMatchContent(string?content,?bool?onlyText?=?false){if?(string.IsNullOrWhiteSpace(content)){return?false;}return?GetEffectivePatterList(content,?onlyText).Any();}string?ReplaceContent(string?content,?bool?onlyText?=?false){if?(string.IsNullOrWhiteSpace(content)){return?content;}var?effectivePatternList?=?GetEffectivePatterList(content,?onlyText);foreach?(var?(pattern,?replacement,?isHtml)?in?effectivePatternList){content?=?pattern.Replace(content,?replacement);}return?content;}

正則表達式替換內容

??int.TryParse(GetArg(args,?1,?"100"),?out?int?maxDegreeOfParallelism);var?parallelOptions?=?new?ParallelOptions?{?MaxDegreeOfParallelism?=?maxDegreeOfParallelism?};Parallel.ForEach(bigCentralModuleAccountList,?parallelOptions,?(account)?=>{//System.Threading.Interlocked.Increment(ref?executingCount);?//?減少?lock縮短執行時間using?(ILifetimeScope?jobScope?=?AutofacConfig.Container.BeginLifetimeScope())using?(new?TimeMeasureScope($"account:?{account}")){try{var?setLoginStatus?=?jobScope.Resolve<ISetLoginStatus>();?//Login?Status?(Windows?Service?要先執行)setLoginStatus.SetAccount(account);?//執行前要先設定?Account，才能找到對應的?SCH?DB#region?User_Ticket_Draftvar?userTicketDraftService?=?jobScope.Resolve<IUserTicketDraftService>();var?userTicketDraftList?=?userTicketDraftService.getUser_Ticket_Draft(account).ToList()????new?List<User_Ticket_Draft>();var?validUserTicketDraftList?=?userTicketDraftList.FindAll(u?=>!string.IsNullOrEmpty(u?.DraftModelJsonString));logger.Info($"{account},?userTicketDraftList.Count:?{userTicketDraftList.Count},?validUserTicketDraftList:?{validUserTicketDraftList.Count}");foreach?(var?userTicketDraft?in?validUserTicketDraftList){bool?isUpdateUserTicketDraft?=?false;string?unzipJsonString?=?StringTools.UnzipZippedText(userTicketDraft.DraftModelJsonString);List<TicketAddMessageModel>?resultList?=?JsonConvert.DeserializeObject<List<TicketAddMessageModel>>(unzipJsonString);if?(resultList?.Any()?==?true){foreach?(var?item?in?resultList.FindAll(r?=>?IsMatchContent(r.Message))){item.Message?=?ReplaceContent(item.Message);isUpdateUserTicketDraft?=?true;}}if?(isUpdateUserTicketDraft){string?jsonString?=?JsonConvert.SerializeObject(resultList);string?zippedJsonString?=?StringTools.ZipText(jsonString);userTicketDraft.DraftModelJsonString?=?zippedJsonString;userTicketDraft.Update_Date?=?DateTime.UtcNow;userTicketDraft.Update_User?=?nameof(ReleaseUpdate1381);userTicketDraftService.updateUser_Ticket_Draft(userTicketDraft);}}#endregion?User_Ticket_Draft#region?TicketTemplateSubvar?ticketTemplateService?=?jobScope.Resolve<ITicketTemplateService>();var?ticketTemplateSubList?=?ticketTemplateService.getTicket_Template_Sub(account).ToList()????new?List<Ticket_Template_Sub>();var?modifyTicketTemplateSubList?=?ticketTemplateSubList.FindAll(t?=>IsMatchContent(t.Message_Html)||?IsMatchContent(t.Message_Text));logger.Info($"{account},?ticketTemplateSubList.Count:?{ticketTemplateSubList.Count},?modifyTicketTemplateSubList.Count:?{modifyTicketTemplateSubList.Count}");foreach?(var?ticketTemplateSub?in?modifyTicketTemplateSubList){bool?isupdate?=?false;if?(IsMatchContent(ticketTemplateSub.Message_Html)){ticketTemplateSub.Message_Html?=?ReplaceContent(ticketTemplateSub.Message_Html);isupdate?=?true;}if?(IsMatchContent(ticketTemplateSub.Message_Text)){ticketTemplateSub.Message_Text?=?ReplaceContent(ticketTemplateSub.Message_Text);isupdate?=?true;}if?(isupdate){ticketTemplateSub.Update_Date?=?DateTime.UtcNow;ticketTemplateSub.Update_User?=?nameof(ReleaseUpdate1381);ticketTemplateService.UpdateTicket_Template_Sub(ticketTemplateSub);}}#endregion?TicketTemplateSub#region?Campaign?Templatevar?amznFdbkMailCampaignTemplateService?=?jobScope.Resolve<IAmznFdbkMailCampaignTemplateService>();lock?(lockObj){//刪除Campaign?TemplateamznFdbkMailCampaignTemplateService.DeleteCampaignTemplate(new?AmznFdbkCampaignGuidSearchModel()?{?Account?=?account?});}var?allCampaigns?=?amznFdbkMailCampaignTemplateService.GetAllAMZN_Fdbk_Mail_Campaign_Template(account).ToList()????new?List<AMZN_Fdbk_Mail_Campaign_Template>();var?modifyCampaigns?=?allCampaigns.FindAll(c?=>IsMatchContent(c.Template_Content)||?IsMatchContent(c.Template_Text_Content)||?IsMatchContent(c.Variable_List));logger.Info($"{account},?allCampaigns.Count:?{allCampaigns.Count},?modifyCampaigns.Count:?{modifyCampaigns.Count}");foreach?(var?campaign?in?modifyCampaigns){bool?isupdate?=?false;if?(IsMatchContent(campaign.Template_Content)){campaign.Template_Content?=?ReplaceContent(campaign.Template_Content);isupdate?=?true;}if?(IsMatchContent(campaign.Template_Text_Content)){campaign.Template_Text_Content?=?ReplaceContent(campaign.Template_Text_Content);isupdate?=?true;}if?(IsMatchContent(campaign.Variable_List,?onlyText:?true)){campaign.Variable_List?=?ReplaceContent(campaign.Variable_List,?onlyText:?true);isupdate?=?true;}if?(isupdate){amznFdbkMailCampaignTemplateService.Update(campaign,?nameof(ReleaseUpdate1381));}}#endregion?Campaign?Template}catch?(Exception?e){Log($"Catch?exception.?account:?{account},?{e.ToString()}");}}//System.Threading.Interlocked.Decrement(ref?executingCount);System.Threading.Interlocked.Increment(ref?completedCount);LogProgress();});}protected?override?string?GetLoggerName(){return?GetType().FullName;}}public?static?class?ReplaceRegexIMG{public?static?string?ReplacehtmlBody(string?htmlBody){if?(string.IsNullOrWhiteSpace(htmlBody)){return?htmlBody;}var?reg?=?new?System.Text.RegularExpressions.Regex("(\\<img.*?style=['\"])([^\\>]+\\>)",?System.Text.RegularExpressions.RegexOptions.IgnoreCase);return?reg.Replace(htmlBody,?"$1max-width:?80%?!important;$2");}} }

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