Issue Fix

gatewayServiceUsingJava/gatewayServiceUsingJava/build.gradle

 plugins {
-	id 'org.springframework.boot' version '2.3.1.RELEASE'
+	id 'org.springframework.boot' version '2.2.6.RELEASE'
 	id 'io.spring.dependency-management' version '1.0.9.RELEASE'
 	id 'java'
 }
@@ -12,17 +12,21 @@ repositories {
 	mavenCentral()
 }
 
-dependencies {
-	//implementation 'org.springframework.boot:spring-boot-starter-web'
 
-	compile group: 'org.springframework.boot', name: 'spring-boot-starter', version: '2.2.8.RELEASE'
-	compile group: 'org.springframework.boot', name: 'spring-boot-starter-validation', version: '2.2.8.RELEASE'
-	runtime group: 'org.springframework.cloud', name: 'spring-cloud-dependencies', version: 'Greenwich.SR2', ext: 'pom'
+ext {
+	set('springCloudVersion', "Hoxton.SR3")
+}
+
+dependencies {
 	compileOnly 'org.projectlombok:lombok'
-	compile group: 'org.springframework.cloud', name: 'spring-cloud-starter-gateway', version: '2.1.5.RELEASE'
+	implementation 'org.springframework.cloud:spring-cloud-starter-gateway'
 	annotationProcessor 'org.projectlombok:lombok'
-	testImplementation('org.springframework.boot:spring-boot-starter-test') {
-		exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
+}
+
+
+dependencyManagement {
+	imports {
+		mavenBom "org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}"
 	}
 }