英文:
Split by : but not ::
问题
我在想如何使用 String#split(String) 方法按 : 分割字符串，但不包括 ::。
我在使用 Java，如果有差异的话。
我查了很多资料，但没有找到合适的内容，而且我对正则表达式不熟悉。
示例：
coolKey:cool::value 应该返回 ["coolKey", "cool::value"]
cool::key:cool::value 应该返回 ["cool::key", "cool::value"]
英文:
I was wondering how I could split a String by : but not :: using String#split(String)
I am using Java if it makes a difference.
I looked around a lot and I couldn't find anything, and I'm not familiar with Regex...
Example:
coolKey:cool::value should return ["coolKey", "cool::value"]
cool::key:cool::value should return ["cool::key", "cool::value"]
答案1
得分: 0
你可以尝试使用 (?<!:):(?!:) 进行分割：
String input = "cool::key:cool::value";
String[] parts = input.split("(?<!:):(?!:)");
System.out.println(Arrays.toString(parts));
这将打印出：
[cool::key, cool::value]
这里使用的正则表达式表示在以下情况进行分割：
(?<!:)：前面的字符不是冒号:：以冒号进行分割(?!:)：后面的字符也不是冒号
英文:
You could try splitting on (?<!:):(?!:):
String input = "cool::key:cool::value";
String[] parts = input.split("(?<!:):(?!:)");
System.out.println(Arrays.toString(parts));
This prints:
[cool::key, cool::value]
The regex used here says to split when:
(?<!:) the character which precedes is NOT colon
: split on colon
(?!:) which is also NOT followed by colon
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