Overview RestTemplate reduces boilerplate code and enforces RESTful principles. In this post, we will discuss different ways in which we can use RestTemplate HTTP GET call HTTP POST call HTTP Exchange call HTTP DELETE call GET call Get entry point has two methods getForEntity: returns ResponseEntity which can be used to Read more…
Overview In this blog, we will cover a very common issue that causes the Infinity loop aka (Jackson JSON infinite recursion) when using @ManyToOne and @OneToMany relation between entities and how we can resolve them. Sample Code being used Error ERROR 26260 — [nio-8080-exec-3] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] Read more…
Overview In this blog, we will cover What is Session Replication? How to configure Session replication into multiple Server running in a Cluster. Session Replication When it comes to the high availability of Application, we generally run our server as a Cluster of multiple servers running using Load Balancer. But what Read more…
Overview We have seen in prev post how to use GSON to convert a JSON to Java Object and other way around In this post, we will see how to convert JSON which has Dynamic Keys. Sample JSON If you notice in above JSON Sample_01 and Sample_20 are dynamic. In this case, Read more…
Overview When defining a <bean> you have the option of declaring scope for that bean In this blog we will cover What are different types of Scope available in Spring.. Example for each scope type Types of Scope Scope Description singleton Scopes a single bean definition to a single object Read more…
Overview In previous blog, we saw Dependency Injection in Spring using Annotation. Here we will see how we can do the same using Annotation but without defining Autoscan in XML. We will make use of @Configuration and @Bean to define configuration the same as we did for XML in above Read more…
Overview In previous blog we saw Dependency Injection in Spring using XML. Here we will see how we can do same using Annotation Construction Injection using Annotation xml file Paint class Car class Main class Explanation In xml we are telling Spring to look for a package to scan for Read more…
Overview In my previous blog we saw an overview of Spring IoC and DI. Here we will see Dependency Injection (DI) in detail by answering following question: What is DI Ways of injecting Dependency using XML Dependency Injection Dependency Injection (DI) is a design pattern that removes the dependency from Read more…
Overview In this blog, we will cover following points What is IoC Spring IoC Container Dependency Injection in Spring Example Code Inversion of Control(IoC) Inversion of Control is a principle in software engineering by which the control of objects or portions of a program is transferred to a container or Read more…
Overview Spring is a framework for dependency-injection which is a pattern that allows to build very decoupled systems. The Spring Framework is divided into modules. Applications can choose which modules they need. At the heart are the modules of the core container, including a configuration model and a dependency injection Read more…