String replaceAll(,) 方法 Java 的不区分大小写的变量
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Case Insensitive variable for String replaceAll(,) method Java
提问by DhruvPatel
Can anyone help me with creating a regex for variables in java so that the string variable will be considered to be a case insensitive and replace each and every word like Access, access, etc with WINDOWS of any thing like that?
任何人都可以帮助我在 java 中为变量创建正则表达式，以便字符串变量将被视为不区分大小写，并将每个单词（如 Access、access 等）替换为 WINDOWS 之类的任何东西？
This is the code:
这是代码：
$html=html.replaceAll(label, "WINDOWS");
Notice that label is a string variable.
注意 label 是一个字符串变量。
回答by Bohemian
Just add the "case insensitive" switch to the regex:
只需将“不区分大小写”开关添加到正则表达式：
html.replaceAll("(?i)"+label, "WINDOWS");
Note: If the label could contain characters with special regex significance, eg if label was ".*", but you want the label treated as plain text (ie not a regex), add regex quotes around the label, either
注意：如果标签可以包含具有特殊正则表达式意义的字符，例如如果 label was ".*"，但您希望将标签视为纯文本（即不是正则表达式），请在标签周围添加正则表达式引号，或者
html.replaceAll("(?i)\Q" + label + "\E", "WINDOWS");
or
或者
html.replaceAll("(?i)" + Pattern.quote(label), "WINDOWS");
回答by anttix
String.replaceAll is equivalent to creating a matcher and calling its replaceAll method so you can do something like this to make it case insensitive:
String.replaceAll 相当于创建一个匹配器并调用它的 replaceAll 方法，因此您可以执行以下操作以使其不区分大小写：
html = Pattern.compile(label, Pattern.CASE_INSENSITIVE).matcher(html).replaceAll("WINDOWS");
See: String.replaceAlland Pattern.compileJavaDocs
请参阅：String.replaceAll和 Pattern.compileJavaDocs
回答by Sri Harsha Chilakapati
Just use patterns and matcher. Here's the code
只需使用模式和匹配器。这是代码
Pattern p = Pattern.compile("Your word", Pattern.CASE_INSENSITIVE);
Matcher m = p.matcher("String containing words");
String result = m.replaceAll("Replacement word");
Using patterns is easy as they are not case insensitive.
使用模式很容易，因为它们不区分大小写。
For more information, see
有关更多信息，请参阅
回答by blinkymomo
I think but am not sure you want label to be something like [Aa][cC][cC][eE][sS][sS]
我认为但不确定您是否希望标签类似于 [Aa][cC][cC][eE][sS][sS]
or alternatively do
或者做
html = Pattern.compile(lable, Pattern.CASE_INSENSITIVE)
.matcher(html).replaceAll("WINDOWS");
