How to execute asynchronous query with Spring JPA and PostgreSQL | Spring Boot

https://grokonez.com/spring-framework/spring-boot/how-to-execute-asynchronous-query-with-spring-jpa-and-postgresql-spring-boot

How to execute asynchronous query with Spring JPA and PostgreSQL | Spring Boot

In tradition approach, implementing Data Access Layer makes lots of boilerplate code. Spring Data provides us Spring JPA which supports the ways to write interface for repositories and custom finder methods. The implementation will be done automatically by Spring Framework.

The tutorial shows you how to execute asynchronous query with Spring JPA and PostgreSQL using Spring Boot.

Related articles:

I. Technology

  • Java 1.8
  • Maven 3.3.9
  • Spring Tool Suite – Version 3.8.1.RELEASE
  • Spring Boot: 1.5.1.RELEASE

    II. Overview

    1. Project Structure

  • Class Customer corresponds to entity and table customer, it should be implemented Serializable.
  • CustomerRepository is an interface extends CrudRepository, will be autowired in WebController for implementing repository methods and custom finder methods.
  • WebController is a REST Controller which has request mapping methods for RESTful requests such as: save, findall, findonebyid, findbylastname.
  • Configuration for Spring Datasource and Spring JPA properties in application.properties
  • Dependencies for Spring Boot and PostgreSQL in pom.xml

    2. Step to do

    - Create Spring Boot project & add Dependencies - Configure Spring JPA - Create DataModel Class - Create Spring JPA Repository Interface - Create Web Controller
  • Create PostGreSQL table - Run Spring Boot Application & Enjoy Result

    III. Practice

    1. Create Spring Boot project & add Dependencies

    Open Spring Tool Suite, on Menu, choose File -> New -> Spring Starter Project, then fill each fields. Click Next, in SQL: choose JPA and PostgreSQL, in Web: choose Web. springjpa-postgresql-configdependencystarter Click Finish, then our project will be created successfully.

More at:

https://grokonez.com/spring-framework/spring-boot/how-to-execute-asynchronous-query-with-spring-jpa-and-postgresql-spring-boot

How to execute asynchronous query with Spring JPA and PostgreSQL | Spring Boot

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