java 如何删除特定标记之前的所有内容,包括字符串中的标记

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时间:2020-10-31 15:59:22  来源:igfitidea点击:

How to remove everything that comes before a particular token, including the token from a String

javastring

提问by Nigel Thomas

Possible Duplicate:
Remove a particular token from a string

可能的重复:
从字符串中删除特定标记

This question is a continuation to my earlier question

这个问题是我之前问题的延续

Remove a particular token from a string

从字符串中删除特定标记

I need to remove whatever that comes before the "+" and the "+" from the String.

我需要从字符串中删除“+”和“+”之前的任何内容。

How can it be done?

怎么做到呢?

回答by PermGenError

Use String#substring()and String#indexOfin combination

使用字符串#子()字符串的indexOf#结合

    String s=  "GUID+456709876790";
    System.out.println(s.substring(s.indexOf("+")+1));

Output: 456709876790

输出:456709876790

回答by Jaco Van Niekerk

If the String is in the format +text+, a regular expression may do the trick:

如果字符串的格式为 +text+,正则表达式可能会起作用:

Pattern p = Pattern.compile(".*\+(.*)\+.*");
Matcher m = p.matcher("sdasdad+982347347+234234234");
if (m.matches()) {
    System.out.println("Here you go: " + m.group(1));
}

The entire recognised string is group 0, the content in the first bracket is group 1.

整个识别出的字符串为0组,第一个括号中的内容为1组。