Merge pull request #7398 from rahulgul8/development
Checking if a URL Exists in Java
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commit
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*.class
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0.*
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#folders#
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/target
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/neoDb*
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/data
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/src/main/webapp/WEB-INF/classes
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*/META-INF/*
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.resourceCache
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# Packaged files #
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*.jar
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*.war
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*.ear
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# Files generated by integration tests
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backup-pom.xml
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/bin/
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/temp
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#IntelliJ specific
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.idea/
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*.iml
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<artifactId>core-java-networking-2</artifactId>
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<name>core-java-networking-2</name>
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<packaging>jar</packaging>
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<parent>
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<groupId>com.baeldung.core-java-modules</groupId>
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<artifactId>core-java-modules</artifactId>
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<version>1.0.0-SNAPSHOT</version>
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</parent>
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<dependencies>
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</dependencies>
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<build>
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<finalName>core-java-networking-2</finalName>
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</build>
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</project>
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package com.baeldung.url;
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import java.io.IOException;
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import java.net.HttpURLConnection;
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import java.net.URL;
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public class UrlChecker {
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public int getResponseCodeForURL(String address) throws IOException {
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return getResponseCodeForURLUsing(address, "GET");
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}
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public int getResponseCodeForURLUsingHead(String address) throws IOException {
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return getResponseCodeForURLUsing(address, "HEAD");
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}
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private int getResponseCodeForURLUsing(String address, String method) throws IOException {
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HttpURLConnection.setFollowRedirects(false); // Set follow redirects to false
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final URL url = new URL(address);
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HttpURLConnection huc = (HttpURLConnection) url.openConnection();
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huc.setRequestMethod(method);
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return huc.getResponseCode();
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}
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}
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package com.baeldung.url;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import java.io.IOException;
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import org.junit.Test;
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public class UrlCheckerUnitTest {
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@Test
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public void givenValidUrl_WhenUsingHEAD_ThenReturn200() throws IOException {
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UrlChecker tester = new UrlChecker();
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int responseCode = tester.getResponseCodeForURLUsingHead("http://www.example.com");
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assertEquals(200, responseCode);
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}
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@Test
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public void givenInvalidIUrl_WhenUsingHEAD_ThenReturn404() throws IOException {
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UrlChecker tester = new UrlChecker();
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int responseCode = tester.getResponseCodeForURLUsingHead("http://www.example.com/unkownurl");
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assertEquals(404, responseCode);
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}
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@Test
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public void givenValidUrl_WhenUsingGET_ThenReturn200() throws IOException {
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UrlChecker tester = new UrlChecker();
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int responseCode = tester.getResponseCodeForURL("http://www.example.com");
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assertEquals(200, responseCode);
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}
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@Test
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public void givenInvalidIUrl_WhenUsingGET_ThenReturn404() throws IOException {
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UrlChecker tester = new UrlChecker();
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int responseCode = tester.getResponseCodeForURL("http://www.example.com/unkownurl");
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assertEquals(404, responseCode);
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}
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}
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@ -17,6 +17,7 @@
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<module>pre-jpms</module>
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<module>core-java-exceptions</module>
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<module>core-java-optional</module>
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<module>core-java-networking-2</module>
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</modules>
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</project>
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