Introduction In this post we will see how to download file using Angular and Spring Boot. There are situations where you need to download file from server or you need to generate report from database and download it. This example may help you in that situation. Here we will fetch records from database and download […]
Drools support in Spring Boot 2
Introduction We will see an example on drools support in Spring Boot 2. We have seen in past example on how to integrate drools in Spring application. We had used Spring Boot version 1.5.9 but here we will support Spring Boot 2.1.5 version. I will not explain about drools in this post and if you […]
HATEOAS driven REST API using Spring Boot
Introduction In this post we will see an example on HATEOAS driven REST API using Spring Boot. An approach that breaks down the principal elements of a REST approach into three steps are resources, http verbs and hypermedia controls: Without using any mechanism of the web, HTTP is used as a transport system for remote […]
Convert Milliseconds into Years, Months, Weeks, Days, Hours, Minutes, Seconds in Java
Introduction This example shows you how to convert milliseconds into years, months, weeks, days, hours, minutes, seconds in Java. Sometimes we need to convert the milliseconds into years or months or weeks or days or hours or minutes or seconds. For example, when you want to check the exact time taken by a program to […]
Spring Boot Security Example – Single Sign On using OAuth 2
Introduction Here we will see Spring Boot Security Example – Single Sign On using OAuth 2. Single Sign On or simply SSO is a property of access control of multiple related, yet independent, software systems, where a user logs in with a single set of credentials (username and password) to gain access. Here we will […]
How to Create Annotation based Spring Application
Introduction We will see how to create annotation based Spring application. We will use here H2 database to perform database activities using Spring JDBC Template. We will not use any XML configuration here or zero XML configuration. We will also see how to run this stand-alone Spring application using main method. This application is totally […]
Integrate H2 In-memory Database with Spring
Introduction This tutorial will show you how to integrate in-memory H2 database with Spring. We will see here simple example to understand how it works. Here we will use Spring JDBC API to perform database activities. You can use this example with Spring based applications, such as, Spring Core, Spring MVC etc. You may also […]
Spring Boot Actuator – Creating Custom Endpoints
Introduction Here we will see example on creating custom endpoints in Spring Boot Actuator. There are a number of endpoints provided by Spring Boot however we may want to create a custom endpoint using Spring Boot Actuator.
Spring Boot Actuator – Securing HTTP Endpoints
Introduction Here we will see example on securing HTTP endpoints in Spring Boot application. Like other sensitive URLs, you should take care to secure HTTP endpoints. If Spring Security is present, endpoints are secured by default using Spring Security’s content-negotiation strategy. If you wish to configure custom security for HTTP endpoints, for example, only allow […]
Spring Boot Actuator – Accessing Endpoints via JMX
Introduction This tutorial will show you how to access Endpoints via JMX in Spring Boot Actuator. As we know only /actuator/health and /actuator/info are accessible over HTTP protocol for security reasons. Therefore if you want to access other end points you have to access over JMX. JMX console comes with the JDK installation, so you […]