SSL Spring Boot HTTPs Enabling Example

By |2019-04-20T21:15:58+05:30December 8th, 2018|Spring Boot|

In this tutorials, we are going to see how to enable Spring Boot HTTPs connection.

Spring Boot Https:

Enabling HTTPs (SSL) for Spring Boot application on embedded Tomcat server.


  • Spring Boot 2.1.1 Release
  • Java 8


  • Install Java 8+ on your system and set JAVA_HOME on your system as we are going to work with keytool.exe, it comes as part of the JDK.
  • Generate a self-signed certificate (a .jks file) with our own details and password.
  • Integrate the .jks file and SSL configurations into Spring Boot Application to make the application secure.

Generating self-signed jks file:

Generate self-signed certificate using below command.

>keytool -genkey -alias spring-https-example -storetype JKS -keyalg RSA -keysize 2048 -validity 360 -keystore spring-https-example.jks
>keytool -genkey -alias spring-https-example -storetype JKS -keyalg RSA -keysize 2048 -validity 360 -keystore spring-https-example.jks
Enter keystore password:                                                                                                Re-enter new password:
What is your first and last name?
  [Unknown]:  Chandra Shekhar
What is the name of your organizational unit?
  [Unknown]:  OnlineTutorialsPoint
What is the name of your organization?
  [Unknown]:  OnlineTutorialspoint
What is the name of your City or Locality?
  [Unknown]:  Hyderabad
What is the name of your State or Province?
  [Unknown]:  Telangana
What is the two-letter country code for this unit?
  [Unknown]:  IN
Is CN=Onlinetutorialspoint, OU=OnlineTutorialsPoint, O=OnlineTutorialspoint, L=Hyderabad, ST=Telangana, C=IN correct?
  [no]:  yes

Enter key password for <https-example>
        (RETURN if same as keystore password):
Re-enter new password:

The JKS keystore uses a proprietary format. It is recommended to migrate to PKCS12 which is an industry standard format using "keytool -importkeystore -srckeystore spring-https-example.jks -destkeystore spring-https-example.jks -deststoretype pkcs12".

It will generate spring-https-example.jks file in your current directory. Copy the file into project classpath location like below.

Application Structure:

Spring Boot Https Example3-min

Here I am going to create a simple Spring Boot application it will provide a /hello endpoint with secured SSL URL.

Project dependencies:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="" xmlns:xsi=""


  <description>SpringBoot Https Enabling</description>

    <relativePath/> <!-- lookup parent from repository -->

Enabling SSL configurations.


Creating rest controller:
package com.onlinetutorialspoint.controller;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

public class HelloController {
    public String hello(){
        return "hello..";

Spring Boot Main class
package com.onlinetutorialspoint;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

public class SpringBootHttpsEnablingApplication {

  public static void main(String[] args) {, args);

Run the application.

>mvn clean install
>mvn springboot:run
  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 :: Spring Boot ::        (v2.1.1.RELEASE)

2018-12-05 08:39:28.705  INFO 1820 --- [           main] c.o.SpringBootHttpsEnablingApplication   : Starting SpringBootHttpsEnablingApplication on DESKTOP-RN4SMHT with PID 1820 (E:\work\SpringBoot-Https-Enabling\target\classes started by Lenovo in E:\work\SpringBoot-Https-Enabling)
2018-12-05 08:39:28.716  INFO 1820 --- [           main] c.o.SpringBootHttpsEnablingApplication   : No active profile set, falling back to default profiles: default
2018-12-05 08:39:35.659  INFO 1820 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8443 (https)
2018-12-05 08:39:35.717  INFO 1820 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]

Access the hello endpoint with https protocol.

Spring Boot Https Example 1-min

Check certificate details by clicking on information icon on the URL bar.

Spring Boot Https Example 2-min

Download Source fron GIT:



Happy Learning:)

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