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Extract video id from YouTube url in java
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import com.google.inject.Singleton; | |
import java.util.regex.Matcher; | |
import java.util.regex.Pattern; | |
@Singleton | |
public class YouTubeHelper { | |
final String youTubeUrlRegEx = "^(https?)?(://)?(www.)?(m.)?((youtube.com)|(youtu.be))/"; | |
final String[] videoIdRegex = { "\\?vi?=([^&]*)","watch\\?.*v=([^&]*)", "(?:embed|vi?)/([^/?]*)", "^([A-Za-z0-9\\-]*)"}; | |
public String extractVideoIdFromUrl(String url) { | |
String youTubeLinkWithoutProtocolAndDomain = youTubeLinkWithoutProtocolAndDomain(url); | |
for(String regex : videoIdRegex) { | |
Pattern compiledPattern = Pattern.compile(regex); | |
Matcher matcher = compiledPattern.matcher(youTubeLinkWithoutProtocolAndDomain); | |
if(matcher.find()){ | |
return matcher.group(1); | |
} | |
} | |
return null; | |
} | |
private String youTubeLinkWithoutProtocolAndDomain(String url) { | |
Pattern compiledPattern = Pattern.compile(youTubeUrlRegEx); | |
Matcher matcher = compiledPattern.matcher(url); | |
if(matcher.find()){ | |
return url.replace(matcher.group(), ""); | |
} | |
return url; | |
} | |
} |
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import org.junit.Test; | |
import org.junit.runner.RunWith; | |
import org.junit.runners.Parameterized; | |
import java.util.Arrays; | |
import java.util.Collection; | |
import static org.junit.Assert.assertEquals; | |
@RunWith(Parameterized.class) | |
public class YouTubeHelperTest { | |
@Parameterized.Parameters | |
public static Collection<Object[]> data() { | |
return Arrays.asList(new Object[][] { | |
{ "youtube.com/v/vidid" }, | |
{ "youtube.com/vi/vidid" }, | |
{ "youtube.com/?v=vidid" }, | |
{ "youtube.com/?vi=vidid" }, | |
{ "youtube.com/watch?v=vidid" }, | |
{ "youtube.com/watch?vi=vidid" }, | |
{ "youtu.be/vidid" }, | |
{ "youtube.com/embed/vidid" }, | |
{ "youtube.com/embed/vidid" }, | |
{ "www.youtube.com/v/vidid" }, | |
{ "http://www.youtube.com/v/vidid" }, | |
{ "https://www.youtube.com/v/vidid" }, | |
{ "youtube.com/watch?v=vidid&wtv=wtv" }, | |
{ "http://www.youtube.com/watch?dev=inprogress&v=vidid&feature=related" }, | |
{ "https://m.youtube.com/watch?v=vidid" } | |
}); | |
} | |
private String url; | |
public YouTubeHelperTest(String url) { | |
this.url= url; | |
} | |
private YouTubeHelper youTubeHelper = new YouTubeHelper(); | |
@Test | |
public void extractingVideoIdFromUrlShouldReturnVideoId() { | |
assertEquals("Unable to extract correct video id from url " + url, "vidid", youTubeHelper.extractVideoIdFromUrl(url)); | |
} | |
} |
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