Table of Contents Introduction Prerequisites Project Setup MySQL Table DataSource Config Entity Class Repository Interface Service Class Spring Web Controller Spring Boot Main Class UI (User Interface) Testing Multi Steps Form Source Code Introduction In this example I am going to show you how to build multisteps form using Spring Boot thymeleaf jquery. Multi steps form is required when users…

Table of Contents Introduction Prerequisites Project Setup MySQL Table Application Properties Entity Class Repository Interface Service Class REST Controller Spring Boot Main Class Testing Hazelcast Caching Java Config for Hazelcast Source Code Introduction In this tutorial I am going to show you an example on caching using hazelcast in Spring Boot REST APIs. The cache or caching mechanism is used…

Table of Contents Introduction Why do you want to connect to multiple database Prerequisites Project Setup Application Properties DataSource Configurations DAO Class Source Code Introduction Here I am going to show you how to connect to Oracle data source using JDBC LDAP URL. I am going to create multiple data sources for connecting to multiple Oracle databases using Spring Boot…

Table of Contents Introduction What Is Dead Letter Queue Prerequisites Project Setup Application Properties Custom Exception Producer or Sender Consumer or Receiver Config Class Spring Boot Main Class Testing RabbitMQ Dead Letter Queue Source Code Introduction In this example I am going to show you how to retry the failed messages in RabbitMQ message broker. So, here I am going…

Table of Contents Introduction Prerequisites Angular Project Settings Gradle Properties Spring Boot Project Build App Testing Angular Spring Boot Integration Source Code Introduction In this tutorial I will show you how to integrate Angular into Spring Boot using Gradle build tool. So, let’s say you have two different projects – Angular application and Spring Boot application and you do not…

Table of Contents Introduction Prerequisites Project Setup Inheritance/Override Testing The Application Source Code Introduction In this example I am going to show you how to inherit values from application.properties into different environments. So, if you have an application.properties file under class path folder src/main/resources and if you have different environment specific application-{env}.properties files, then you csan inherit key/value pairs from application.properties file. Even you can override the inherited key/value…

Table of Contents Introduction Callback Queue Message Properties Correlation Id Prerequisites Project Setup Application Properties Configuration Server Client Main Class Output – Testing RPC Source Code Introduction In this tutorial, I am going to show you how to create Spring Boot RabbitMQ RPC Example. RPC is an acronym which stands for Remote Procedure Call, in which a function is executed…

Table of Contents Introduction Why Does 404 Error Occur Solution Introduction Here in this tutorial I am going to show you how to redirect to context path for 404 error in Angular Spring Boot application. Context path basically is the same path for home page or root URL. It is assumed that your frontend application is built using Angular and…

Introduction Here I am going to tell you how to use proxy server and timeout with Spring Boot RestTemplate API. If you are running your application behind a proxy server then you need to connect to REST API through proxy server and without proxy server connection you may face connection timeout error or other errors. Remember if you are behind the proxy…

Introduction In this tutorial I am going to show you how to build Spring Boot Angular CRUD Application. CRUD is an acronym and stands for Create, Read, Update and Delete operations performed through an application or APIs. Using Spring Boot application I will build REST APIs which will be used to perform CRUD operations on server side resources. The Angular…