fix: remove last slash of url

Author: birariro

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/FeignClientsRegistrar.java

@@ -117,6 +117,9 @@ static String getUrl(String url) {
 			if (!url.contains("://")) {
 				url = "http://" + url;
 			}
+			if (url.endsWith("/")) {
+				url = url.substring(0, url.length() - 1);
+			}
 			try {
 				new URL(url);
 			}

spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/FeignClientBuilderTests.java

@@ -128,7 +128,7 @@ void forType_allFieldsSetOnBuilder() {
 		assertFactoryBeanField(builder, "contextId", "TestContext");
 
 		// and:
-		assertFactoryBeanField(builder, "url", "http://Url/");
+		assertFactoryBeanField(builder, "url", "http://Url");
 		assertFactoryBeanField(builder, "path", "/Path");
 		assertFactoryBeanField(builder, "dismiss404", true);
 
@@ -148,7 +148,7 @@ void forType_clientFactoryBeanProvided() {
 		assertFactoryBeanField(builder, "contextId", "TestContext");
 
 		// and:
-		assertFactoryBeanField(builder, "url", "http://Url/");
+		assertFactoryBeanField(builder, "url", "http://Url");
 		assertFactoryBeanField(builder, "path", "/Path");
 		assertFactoryBeanField(builder, "dismiss404", true);
 		List<FeignBuilderCustomizer> additionalCustomizers = getFactoryBeanField(builder, "additionalCustomizers");

spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/FeignClientsRegistrarTests.java

@@ -89,6 +89,12 @@ private String testGetName(String name) {
 		return registrar.getName(Collections.singletonMap("name", name));
 	}
 
+	@Test
+	void removeLastSlashOfUrl() {
+		String url = FeignClientsRegistrar.getUrl("http://localhost/");
+		assertThat(url).isEqualTo("http://localhost");
+	}
+
 	@Test
 	void testFallback() {
 		assertThatExceptionOfType(IllegalArgumentException.class)