从URL提取特定的字符串

Question

I want to extract some string from this url

https://s3-ap-southeast-1.amazonaws.com/mtpdm/2019-06-14/12-14/1001_1203_20190614120605_5dd404.jpg

I want to extract the 2019-06-14, how do I do that using java?

Answer 1

Use Regular Expression to achieve this to get the Date 2019-06-14 ,

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class ExtractDateFromURL {

     public static void main(String []args) {
        String URL = "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2019-06-14/12-14/1001_1203_20190614120605_5dd404.jpg";

        Pattern pattern = Pattern.compile("(\\d{4}-\\d{2}-\\d{1,2})");
        Matcher matcher = pattern.matcher(URL);

        if (matcher.find()) {
            System.out.println(matcher.group(1)); // Do what you need to do with the result
        }
     }
}

Output

2019-06-14

And to get the 12-14 you can use the following Regular Expression,

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class ExtractDateFromURL {

     public static void main(String []args){
        String URL = "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2019-06-14/12-14/1001_1203_20190614120605_5dd404.jpg";

        Pattern pattern = Pattern.compile("/(\\d{1,2}-\\d{1,2}-\\d{4}|\\d{1,2}-\\d{1,2})");
        Matcher matcher = pattern.matcher(URL);

        if (matcher.find()) {
            System.out.println(matcher.group(1));
        }
     }
}

Output

12-14