How to obtain the last path segment of a URI

Question

I have as input a string that is a URI  how is it possible to get the last path segment  that in my case is an id   This is my input URL  String uri    quot http   base path some segment id quot   and I have to obtain the id I have tried with this  String strId    quot http   base path some segment id quot   strId   strId replace path   strId   strId replaceAll  quot   quot    quot  quot    Integer id    new Integer strId   return id intValue     but it doesn t work  and surely there must be a better way to do it

User · Answer

import android net Uri  Uri uri   Uri parse  http   example com foo bar 42 param true    String token   uri getLastPathSegment

User · Answer

Get URL from URI and use getFile   if you are not ready to use substring way of extracting file

User · Answer

You can also use replaceAll   String uri    http   base path some segment id  String lastSegment   uri replaceAll             System out println lastSegment     result   id

User · Answer

is that what you are looking for   URI uri   new URI  http   example com foo bar 42 param true    String path   uri getPath    String idStr   path substring path lastIndexOf        1   int id   Integer parseInt idStr     alternatively  URI uri   new URI  http   example com foo bar 42 param true    String   segments   uri getPath   split       String idStr   segments segments length-1   int id   Integer parseInt idStr

User · Answer

In Java 7  a few of the previous answers can be combined to allow retrieval of any path segment from a URI  rather than just the last segment  We can convert the URI to a java nio file Path object  to take advantage of its getName int  method   Unfortunately  the static factory Paths get uri  is not built to handle the http scheme  so we first need to separate the scheme from the URI s path   URI uri   URI create  http   base path some segment id    Path path   Paths get uri getPath     String last   path getFileName   toString    String secondToLast   path getName path getNameCount   - 2  toString      To get the last segment in one line of code  simply nest the lines above   Paths get URI create  http   base path some segment id   getPath    getFileName   toString    To get the second-to-last segment while avoiding index numbers and the potential for off-by-one errors  use the getParent   method   String secondToLast   path getParent   getFileName   toString     Note the getParent   method can be called repeatedly to retrieve segments in reverse order  In this example  the path only contains two segments  otherwise calling getParent   getParent   would retrieve the third-to-last segment

User · Answer

If you have commons-io included in your project  you can do it without creating unecessary objects with org apache commons io FilenameUtils  String uri    http   base path some segment id   String fileName   FilenameUtils getName uri   System out println fileName     Will give you the last part of the path  which is the id

User · Answer

I m using the following in a utility class   public static String lastNUriPathPartsOf final String uri  final int n  final String    ellipsis    throws URISyntaxException       return lastNUriPathPartsOf new URI uri   n  ellipsis      public static String lastNUriPathPartsOf final URI uri  final int n  final String    ellipsis        return uri toString   contains                 ellipsis length    0           ellipsis 0               uri toString   substring StringUtils lastOrdinalIndexOf uri toString         n             uri toString

User · Answer

In Android  Android has a built in class for managing URIs   Uri uri   Uri parse  http   base path some segment id    String lastPathSegment   uri getLastPathSegment

User · Answer

You can use getPathSegments   function   Android Documentation   Consider your example URI   String uri    http   base path some segment id    You can get the last segment using   List lt String gt  pathSegments   uri getPathSegments    String lastSegment   pathSegments get pathSegments size - 1     lastSegment will be id

User · Answer

I know this is old  but the solutions here seem rather verbose  Just an easily readable one-liner if you have a URL or URI   String filename   new File url getPath    getName      Or if you have a String   String filename   new File new URL url  getPath    getName

User · Answer

Here s a short method to do it   public static String getLastBitFromUrl final String url          return url replaceFirst                          1     lt -- incorrect     return url replaceFirst                    1        Test Code   public static void main final String   args       System out println getLastBitFromUrl           http   example com foo bar 42 param true         System out println getLastBitFromUrl  http   example com foo         System out println getLastBitFromUrl  http   example com bar          Output      42   foo   bar   Explanation               find anything up to the last   character             find  and capture  all following characters up to the next   or               the   makes sure that at least 1 character is matched             find all following characters    1          this variable references the saved second group from above             I e  the entire string is replaces with just the portion             captured by the parentheses above

User · Answer

If you are using Java 8 and you want the last segment in a file path you can do   Path path   Paths get  example path to file    String lastSegment   path getFileName   toString      If you have a url such as http   base path some segment id you can do   final Path urlPath   Paths get  http   base path some segment id    final Path lastSegment   urlPath getName urlPath getNameCount   - 1

[java] How to obtain the last path segment of a URI

Examples related to java

Examples related to string

Examples related to url