Java 如何判断一个字符串是UUID类型？
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How to judge a string is UUID type?
提问by Elton Wang
In my project, I use UUID.fromString()to convert string to UUID, but if the string is not UUIDtype, it will throw exception, so how can I validate this string?
在我的项目中，我使用UUID.fromString()将字符串转换为UUID，但是如果字符串不是UUID类型，它会抛出exception，那么我该如何验证这个字符串呢？
采纳答案by Imran
You should use regex to verify it e.g.:
您应该使用正则表达式来验证它，例如：
/^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$/
test it with e.g.g 01234567-9ABC-DEF0-1234-56789ABCDEF0
用鸡蛋测试一下 01234567-9ABC-DEF0-1234-56789ABCDEF0
or with brackets
或带括号
/^\{?[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}??\}?$/
回答by Sa?a ?ijak
Handle the exception and do something in that case. For example :
处理异常并在这种情况下做一些事情。例如 ：
try{
UUID uuid = UUID.fromString(someUUID);
//do something
} catch (IllegalArgumentException exception){
//handle the case where string is not valid UUID
}
