Spring boot datasource example. Let’s see how to prevent Spring Boot from auto-configuring the data source. 馃獪 3. When you need multiple datasources, you need to create them manually and use custom configuration properties. 2. You can also create your own custom datasource by creating a class that implements javax. datasource. boot. Alpha4 Releases 3 October 2024 | OFBizian The Best Startup Book I Read in 2024: Falling in Love with the Problem, Not the Solution 19 August 2024 | RESTEasy RESTEasy 6. Learn how to configure Oracle database connection pooling using Spring Data for efficient resource management and improved application performance. Using Springdoc-openapi with resteasy-spring-boot 11 November 2024 | RESTEasy RESTEasy 6. sql. 0 application that integrates Spring Security with JWT and connects to a MySQL database for user management. The pattern separates privileged admin operati 85. Using DataSourceBuilder. Dec 25, 2025 路 Learn how to configure a Spring Boot DataSource programmatically, thereby side-stepping Spring Boot's automatic DataSource configuration algorithm. In this project, we will build a Spring Boot 3. By default, Spring Boot auto-configures a DataSource using properties defined in `application. This tutorial uses Postgres and MySQL as the datasources connecting to a Spring boot For example, if you add your own DataSource bean, the default embedded database support backs away. Using custom DataSource. This document explains the two-datasource architecture used by the multi-tenant starter to achieve both tenant isolation and administrative capabilities. A datasource in Spring Boot is a mechanism for providing database connectivity to the application. 10. Step-by-Step Implementation Step 1: Create a Spring Boot project 1. We will use Spring Boot 2. Learn how to connect to PostgreSQL database in Spring Boot using Spring JDBC and Spring Data JPA with practical code examples. properties file. jdbcDataSourceBuilderis a utility or convenience class in spring boot that provides a convenient way to create and configure a datasource. Spring injects the DataSource wherever you need it. properties #first db spring. This is because Spring Boot’s autoconfiguration will only create a single datasource by default. Your All-in-One Learning Portal: GeeksforGeeks is a comprehensive educational platform that empowers learners across domains-spanning computer science and programming, school education, upskilling, commerce, software tools, competitive exams, and more. There is a simpler way: in the application properties (i. DataSourceinterface as shown below. Various properties can be specified inside your application. e. In this tutorial, we’ll learn how to configure and use multiple data sources with Spring Boot. Level 2 — Spring Boot + DataSource (DriverManagerDataSource) Spring Boot allows us to define a DataSource Bean, so we don’t manually open/close connections every time. properties` or `application. This should do the trick!!! Spring Boot : Steps to Configure JNDI DataSource with External Tomcat Add a dependency to pom. You need a dependency on spring-jdbc for an embedded database to be auto-configured. Spring Data JPA simplifies database access by providing ready-to-use repositories for CRUD (Create, Read, Update, Delete) operations, reducing boilerplate code. applicaiotion. Using JNDI. In this example, it is pulled in transitively through spring-boot-starter-data-jpa. How can I configure and use two data sources? For example, here is what I have for the first data source: application. If you add spring provided or pre-defined properties related to database connection in application. This tutorial is a comprehensive guide on how to connect multiple datasources to a Spring Boot application. Oct 30, 2025 路 Notice that we’re using custom property prefixes (spring. Alpha3 Releases - End of Results - February 3, 2023 - Learn comprehensive ways to configure dataSource in Spring Boot using application properties, DataSourceBuilder & custom implementation. yml files of the Spring application. With this implementation, you will be able to: Learn how to fix NaN value issues in Java Micrometer gauge and monitor metrics using Prometheus effectively. org. The class DataSourceAutoConfiguration is the base class for configuring a data source using the spring. url = [url] spring. yml) rename: spring. If, for whatever reason, you do configure the connection URL for an embedded database, take care to ensure that the database’s automatic shutdown is disabled. customer and product) instead of the default spring. That is, you can look up and access objects using a name, with which it is registered in environment. In this example, both datasources happen to point to Nov 20, 2025 路 In Spring Boot, configuring a database connection (DataSource) is a foundational task for most applications. The following example shows how to define a data source in a bean: Jul 23, 2025 路 In Spring Boot, DataSource configuration is the fundamental aspect and it can especially when dealing with databases. jdbc-url. Spring Boot supports H2 (an in-memory relational database engine) and automatically creates a connection. username`, and `spring. properties file, inside your application. password`. Spring Boot code examples for connecting to Oracle database server using Spring JDBC and Spring Data JPA. The purpose of using a datasource in Spring Boot is to provide a convenient and consistent way to Introduction to the Spring JDBC abstraction, with example on how to use the JbdcTempalte and NamedParameterJdbcTemplate APIs. It can still use DriverManager underneath (no pool yet). In this article, we’ll demonstrate how to connect a database with a Spring Boot application using Spring Data JPA. yml`, such as `spring. If you need to find out what auto-configuration is currently being applied, and why, start your application with the --debug switch. * properties. JNDI, which stands for Java Naming and Directory Interface, is a Java API that provides a naming service for Java objects. In this article, We will see Spring boot JNDI datasource Example. 11. xml to give support to our Spring Boot application to run on external servers and also add packaging war (I will explain this later 馃檪 ) Extend main class with SpringBootServletInitializer and override its configure method The typical scenario for a Spring Boot application is to store data in a single relational database. url`, `spring. url to spring. Using application. This appendix provides a list of common Spring Boot properties and references to the underlying classes that consume them. yml file, spring boot will automatically create a datasource. 5, JPA, Hibernate 5, Thymeleaf and H2 database to build a simple Spring Boot multiple datasources web application. properties, along with practical examples and code snippets. yaml file, or as command line switches. However, this approach often leads to **hard-coded or plain Jan 5, 2012 路 This post demonstrates how to dynamically configure multiple data sources in a Spring Boot application using DataSourceBuilder and application. If you need to externalize some settings, you can bind your DataSource to the environment (see Third-party Configuration). But we sometimes need to access multiple databases. 馃 Concept DataSource gives you a ready-made connection. Spring Boot offers multiple ways to configure DataSource including using application. In this article, we will learn how to configure multiple datasources and connect to multiple databases in a typical Spring Boot web application. Final and 7. CRUD Operations: In this tutorial, we will create a Spring Boot CRUD (Create, Read, Update, Delete) application with an H2 in-memory database. properties or application. Managing idle database connections in a high-traffic Java application takes more than setting a few timeout values and leaving it there. Because we use spring-jdbc, Spring Boot automatically creates a JdbcTemplate. Doing so enables debug logs for a selection of core loggers and logs a conditions report to the console. Learn how Spring Boot processes multiple DataSource objects, binds them, resolves dependencies, and manages transactions across separate databases. To find out how to deal with a single data source, check out our introduction to Spring Data JPA. 0. 1 Configure a Custom DataSource To configure your own DataSource, define a @Bean of that type in your configuration. JNDI Datasource needs to be configured at the server level in our case it will be in tomcat configuration. Building with Spring Boot and its default connection Your All-in-One Learning Portal: GeeksforGeeks is a comprehensive educational platform that empowers learners across domains-spanning computer science and programming, school education, upskilling, commerce, software tools, competitive exams, and more. Traditional choices are Apache Commons DBCP and C3P0 with bean-style DataSource classes; for a modern JDBC connection pool, consider HikariCP with its builder-style API instead. Spring Boot reuses your DataSource anywhere one is required, including database initialization. Learn how to configure and how to use the H2 database with Spring Boot. springframework. username = [ When you use Spring’s JDBC layer, you can obtain a data source from JNDI, or you can configure your own with a connection pool implementation provided by a third party. ldhbpj, mpf3, yc3nar, 7m3m, 4fl9, tmbr, gvaa, f6ki7, 5n5v, nrhls,