chore: upgrade spring boot to 2.4.5, spring cloud to 2020.0.2, apply lombok and dependency-management gradle plugin

Author: Nigel.Zheng

README.md

@@ -102,3 +102,4 @@ or
 ## TODOs
 
 - Add support for `RestTemplate`
+- Add unit test

build.gradle

@@ -1,28 +1,23 @@
-buildscript {
-    ext {
-        springBootVersion = '2.0.1.RELEASE'
-    }
+plugins {
+    id "org.sonarqube" version "3.2.0"
+    id "io.spring.dependency-management" version "1.0.11.RELEASE"
+    id "io.freefair.lombok" version "5.3.3.3"
+    id 'java'
+    id 'jacoco'
 }
 
-plugins {
-    id "org.sonarqube" version "2.6.2"
+ext {
+    set('springCloudVersion', "2020.0.2")
+    set('springBootVersion', "2.4.5")
+    set('springCloudStreamVersion', "3.1.2")
+    set('springVersion', "5.4.1")
 }
-apply plugin: 'java'
-apply plugin: "jacoco"
 
 group 'com.github.ahunigel'
 version '2.0-SNAPSHOT'
 
 sourceCompatibility = 1.8
 
-dependencies {
-    implementation "org.springframework.boot:spring-boot-starter-test:${springBootVersion}"
-    implementation "org.springframework.security.oauth:spring-security-oauth2:2.2.1.RELEASE"
-    implementation "org.springframework.security:spring-security-test:5.0.6.RELEASE"
-    implementation group: 'commons-beanutils', name: 'commons-beanutils', version: '1.9.3'
-    compileOnly group: 'javax.servlet', name: 'javax.servlet-api', version: '4.0.1'
-}
-
 repositories {
     maven {
         url 'https://repo.spring.io/libs-milestone'
@@ -32,3 +27,21 @@ repositories {
     maven { url "http://repo.spring.io/release" }
     mavenCentral()
 }
+
+dependencyManagement {
+    imports {
+        mavenBom "org.springframework.boot:spring-boot-dependencies:${springBootVersion}"
+        mavenBom "org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}"
+    }
+}
+
+dependencies {
+    implementation "org.springframework.security.oauth:spring-security-oauth2:2.5.1.RELEASE"
+    implementation "org.springframework.boot:spring-boot-starter-test"
+    implementation "org.springframework.security:spring-security-test"
+    implementation group: 'commons-beanutils', name: 'commons-beanutils', version: '1.9.4'
+
+    implementation group: 'junit', name: 'junit'
+
+    compileOnly group: 'javax.servlet', name: 'javax.servlet-api', version: '4.0.1'
+}

lombok.config

@@ -0,0 +1,4 @@
+# This file is generated by the 'io.freefair.lombok' Gradle plugin
+config.stopBubbling = true
+lombok.addLombokGeneratedAnnotation = true
+lombok.extern.findbugs.addSuppressFBWarnings = true