Question

我正在尝试使用notepad ++批量替换字符串，但似乎无法正确使用正则表达式。

以下是两行

(405, 1, 1, 'AWESOME', 1, 752, 1, 753, 1, '[{"id":1,"left":1,"right":714,"title":"Department"},{"id":405,"left":752,"right":753,"title":"CHANGE THIS TO AWESOME 1"}]'), 
(406, 1, 1, 'MO IS AWESOME', 1, 754, 1, 755, 1, '[{"id":1,"left":1,"right":714,"title":"Department"},{"id":406,"left":754,"right":755,"title":"RANDOM STRING NEEDS CHANGING"}]'),

我正在尝试更改每行json中的第二个标题值，但下面的正则表达式匹配第一个标题到json的结尾

(title.*?)"(.*?)"\}\]

此正则表达式选择以下行

title":"Department"},{"id":405,"left":752,"right":753,"title":"CHANGE THIS TO AWESOME 1"}]

而不是

title":"CHANGE THIS TO AWESOME 1"}]

要更改的示例字符串是

CHANGE THIS TO AWESOME 1` and `RANDOM STRING NEEDS CHANGING

Answer 1

控制 + ħ
找到：title.+?"title":"\K[^"]+
替换为：REPLACEMENT
检查环绕
检查正则表达式
请勿检查. matches newline
全部替换

<强>解释

title       : literally title (ie. the first one in the line)
.+?         : 1 or more any character but newline, not greedy
"title":"   : literally
\K          : forget all we have seen until this position
[^"\r\n]+   : 1 or more any character that is not double quote or line break

给定示例的结果：

(405, 1, 1, 'AWESOME', 1, 752, 1, 753, 1, '[{"id":1,"left":1,"right":714,"title":"Department"},{"id":405,"left":752,"right":753,"title":"REPLACEMENT"}]'), 
(406, 1, 1, 'MO IS AWESOME', 1, 754, 1, 755, 1, '[{"id":1,"left":1,"right":714,"title":"Department"},{"id":406,"left":754,"right":755,"title":"REPLACEMENT"}]'),

Answer 2

我想这可以解决你的问题：

(?:\"title\".+?)(title.*?)"(.*?)"\}\]

View the regex match here

Answer 3

如果你想要替换标题，那么比整个正则表达式匹配的更重要的是第二个捕获组匹配的内容。在您的示例中，匹配是

Group 1.    74-79   `title`
Group 2.    80-161  `:"Department"},{"id":405,"left":752,"right":753,"title":"CHANGE THIS TO AWESOME 1`

问题在于懒惰的占有欲被向前评估。即，正则表达式在第一个title开始匹配，并从那里尝试找到匹配的sortest字符串，但由于终止"\}\]

，它必须包括整行。

最佳解决方案取决于您的数据是否存在任何不正常现象。

您提供的示例的最简单解决方案可能是title":"([^"]*)"\}\]，但只有在标题从不包含引号字符且标题始终是行中的最后一个属性时才有效

Answer 4

你可以试试这个

(?m)(?<=title\":\")[^\"]*(?=\"[^\n\"]*$)

Demo

从第二次出现到字符串结尾的匹配

4 个答案: