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Showing posts from February, 2020

Spring boot retry tutorial

Spring Retry API Spring provides spring-retry API for running business logic with retry options and recovery method or operations. In this tutorial we will learn the usage of all these with example. We are using Spring boot application here for our example code.
Maven dependencies To use spring retry we need below dependencies.
spring-retry This API provides many annotations which we can use in a declarative manner to implement the same.
<dependency> <groupId>org.springframework.retry</groupId> <artifactId>spring-retry</artifactId> <version>1.2.5.RELEASE</version> </dependency> spring-boot-starter-aop Spring AOP is also required for retry implementation.
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-aop</artifactId> </dependency> Retry implementation To implement retry w…

XML Validation using XSD schema

We are going to validate XML using XSD schema in Java. We will create XML Schema using XSD and then use same schema to create the XML file. Then we will write our code to validate this XML against same schema.
XSD Schema creation Below is our schema where we are defining the Schema for XML elements. In this schema we creating two elements, one for request and another for response. We are publishing this schema using targetNamespace which we will use during XML creation.
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:tns="http://services.ttj.com/hello-service" targetNamespace="http://services.ttj.com/hello-service" elementFormDefault="qualified"> <xs:element name="sayHelloRequest"> <xs:complexType> <xs:sequence> <xs:element name="userName" type="xs:string"/> </xs:sequence> </xs:compl…

Setting up ReactJS for development and deployment

In this tutorial we will learn how to create a react application.
Softwares required for ReactJS We need to install below softwares for react development.
Visual studio code This software is free and can be downloaded from https://code.visualstudio.com/download.
Once downloaded, extract the zip  and place the binary under "Applications" and allow app access from System Preferences -> Security & privacy.
Node.JS and NPM Node.JS provides a java script enabled environment to run on a web server. It eases our development for UI based applications. NPM is a package manager which installs along with Node.jS and helpful in installing packages and libraries.
Install Node.JS and NPM using brew.
brew install node Check version of Node and NPM using below command.
node -v npm -v Create React application To create react application we will first install the required package and latter will use it to create our ReactJS application.
Install create-react-app package Execute below co…