正則表達式過濾換行符搜索

我需要從一個日誌過濾查詢，它需要查找新行，我已經陷在正則表達式過濾新線正則表達式過濾換行符搜索

這裏就是我想過濾

日誌的例子

 139 Connect [email protected] as anonymous on 
     139 Query SET CHARACTER SET 'utf8mb4' 
     139 Query SET collation_connection = 'utf8mb4_unicode_ci' 
     139 Query SELECT CURRENT_USER() 
     139 Query FLUSH PRIVILEGES 
     139 Query SELECT * FROM `mysql`.`db` LIMIT 1 
     139 Query DELETE FROM `mysql`.`db` WHERE `host` = "" AND `Db` = "" AND `User` = "" LIMIT 1 
     139 Query INSERT INTO `mysql`.`db`(`host`, `Db`, `User`) VALUES("pma_test_host", "mysql", "pma_test_user") 
     139 Query DELETE FROM `mysql`.`db` WHERE host = "pma_test_host" AND Db = "mysql" AND User = "pma_test_user" LIMIT 1 
     139 Query UPDATE `mysql`.`db` SET `host` = "" WHERE `host` = "" AND `Db` = "" AND `User` = "" LIMIT 1

僅在行日誌文本我用正則表達式這樣

(?=Query).*

但搜索結果

Query SET CHARACTER SET 'utf8mb4'

因爲我使用「。」字符。在正則表達式中，這意味着不在新行中進行搜索。我試圖用幾種方式放置「\ n」，但它不起作用。我需要一個建議，獲取結果是這樣的：

Query SET CHARACTER SET 'utf8mb4' 
      139 Query SET collation_connection = 'utf8mb4_unicode_ci' 
      139 Query SELECT CURRENT_USER() 
      139 Query FLUSH PRIVILEGES 
      139 Query SELECT * FROM `mysql`.`db` LIMIT 1 
      139 Query DELETE FROM `mysql`.`db` WHERE `host` = "" AND `Db` = "" AND `User` = "" LIMIT 1 
      139 Query INSERT INTO `mysql`.`db`(`host`, `Db`, `User`) VALUES("pma_test_host", "mysql", "pma_test_user") 
      139 Query DELETE FROM `mysql`.`db` WHERE host = "pma_test_host" AND Db = "mysql" AND User = "pma_test_user" LIMIT 1 
      139 Query UPDATE `mysql`.`db` SET `host` = "" WHERE `host` = "" AND `Db` = "" AND `User` = "" LIMIT 1

來源

2017-04-05 Risa

如果您不讓我們知道您使用正則表達式的位置，則無法幫助您。或許，'（？s）（？= Query）。*'會起作用。或'（？=查詢）[\ s \ S] *' –

我在java中使用正則表達式thankyou我會試試 – Risa

然後'（？s）（？= Query）。*'會工作。 –

您可以使用正則表達式像

(?=Query)[\s\S]*

它會檢查是否馬上有Query到當前位置的左邊，然後將消耗（將放入匹配值）任何0+字符（包括換行符）。

來源

2017-04-06 12:52:07

正則表達式過濾換行符搜索

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