Java 如何检查字符串是否与 Groovy 中的模式匹配
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How to check if a String matches a pattern in Groovy
提问by kicks
How do I check if a string matches a pattern in groovy? My pattern is "somedata:somedata:somedata", and I want to check if this string format is followed. Basically, the colon is the separator.
如何检查字符串是否与 groovy 中的模式匹配？我的模式是“somedata:somedata:somedata”，我想检查是否遵循此字符串格式。基本上，冒号是分隔符。
回答by cangoektas
Try using a regular expression like .+:.+:.+.
尝试使用像.+:.+:.+.
import java.util.regex.Matcher
import java.util.regex.Pattern
def match = "somedata:somedata:somedata" ==~ /.+:.+:.+/
回答by Nick Grealy
Groovy regular expressions have a ==~operator which will determine if your string matches a given regular expression pattern.
Groovy 正则表达式有一个==~运算符，它将确定您的字符串是否与给定的正则表达式模式匹配。
Example
例子
// ==~ tests, if String matches the pattern
assert "2009" ==~ /\d+/ // returns TRUE
assert "holla" ==~ /\d+/ // returns FALSE
Using this, you could create a regex matcher for your sample data like so:
使用它，您可以为您的示例数据创建一个正则表达式匹配器，如下所示：
// match 'somedata', followed by 0-N instances of ':somedata'...
String regex = /^somedata(:somedata)*$/
// assert matches...
assert "somedata" ==~ regex
assert "somedata:somedata" ==~ regex
assert "somedata:somedata:somedata" ==~ regex
// assert not matches...
assert "somedata:xxxxxx:somedata" !=~ regex
assert "somedata;somedata;somedata" !=~ regex
Read more about it here:
在此处阅读更多相关信息：
http://docs.groovy-lang.org/latest/html/documentation/#_match_operator
http://docs.groovy-lang.org/latest/html/documentation/#_match_operator
回答by kicks
Was able to resolve this using:
能够使用以下方法解决此问题：
myString.matches("\S+:\S+:\S+")
myString.matches("\S+:\S+:\S+")
回答by TCH
The negate regex match in Groovy should be
Groovy 中的否定正则表达式匹配应该是
String regex = /^somedata(:somedata)*$/
assert !('somedata;somedata;somedata' ==~ regex) // assert success!
