Gradle jcenter

build.gradle

buildscript { 
    repositories {
        mavenCentral()
        gradlePluginPortal()
        google()
        jcenter()
        maven {
        	url 'https://jitpack.io'
        	allowInsecureProtocol = true
        }
        maven {
        	url 'https://repo1.maven.org/maven2'
            allowInsecureProtocol = true
        }
        maven {
        	url 'https://repo.maven.apache.org'
            allowInsecureProtocol = true
        }
        maven {
        	url 'https://maven.google.com'
            allowInsecureProtocol = true
        }
        maven {
        	url 'https://repo.maven.apache.org/maven2'
            allowInsecureProtocol = true
        }
        maven {
        	url 'https://jcenter.bintray.com'
            allowInsecureProtocol = true
        }
        maven {
        	url 'https://dl.google.com'
            allowInsecureProtocol = true
        }
    }
}

....

allprojects {
    repositories {
    	mavenCentral()
        google()
        jcenter()
        maven {
        	url 'https://jitpack.io'
        	allowInsecureProtocol = true
        }
        maven {
        	url 'https://repo1.maven.org/maven2'
            allowInsecureProtocol = true
        }
        maven {
        	url 'https://repo.maven.apache.org'
            allowInsecureProtocol = true
        }
        maven {
        	url 'https://maven.google.com'
            allowInsecureProtocol = true
        }
        maven {
        	url 'https://repo.maven.apache.org/maven2'
            allowInsecureProtocol = true
        }
        maven {
        	url 'https://jcenter.bintray.com'
            allowInsecureProtocol = true
        }
        maven {
        	url 'https://dl.google.com'
            allowInsecureProtocol = true
        }
    }
}

settings.gradle

/*
 * This file was generated by the Gradle 'init' task.
 */
pluginManagement {
    repositories {
        gradlePluginPortal()
        mavenCentral()
        jcenter { url 'https://repo.spring.io/release' }
    }
}