I'm trying to extract a string between '/' and '.' of a URL. For example, I have a URL like "some.com/part1/part2/part3/stringINeed.xyz". I need to extract "stringINeed" from the above URL, the one between last '/' and the '.' nothing else.
So far, I tried the following and it gives an empty output:
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
class Extract
{
public static void main (String[] args) throws java.lang.Exception
{
String str = "part1/part2/part3/stringINeed.xyz" ;
Pattern pattern = Pattern.compile("/(.*?).");
Matcher matcher = pattern.matcher(str);
if (matcher.find()) {
System.out.println(matcher.group(1));
}
}
}
What is wrong with my code. Can anyone help?
Use this regex:
[^/.]+(?=\.[^.]+$)
See demo .
In Java:
Pattern regex = Pattern.compile("[^/.]+(?=\\.[^.]+$)");
Matcher regexMatcher = regex.matcher(subjectString);
if (regexMatcher.find()) {
ResultString = regexMatcher.group();
}
Explanation
[^/.]+
matches any chars that are not a slash or a dot (?=\\.[^.]+)
asserts that what follows is a dot followed by non-dots and the end of the string 没有正则表达式
str.substring(str.lastIndexOf("/"), str.lastIndexOf(".")).replaceAll("/", "");
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.