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How to Configure Datasource in Spring Boot

Last Updated on September 18, 2022 by Climent Rick

Spring Boot makes it easy to create stand-alone, production-grade Spring based Applications that you can “just run”. We take an opinionated view of the Spring platform and third-party libraries so you can get started with minimum fuss. Most Spring Boot applications need very little Spring configuration.

You can use Spring Boot to create Java applications that can be started using java -jar or more traditional war deployments. We also provide a command line tool that runs spring scripts.

Configure Multiple DataSource using Spring Boot and Spring Data | Java Techie

  • In Spring Boot, a datasource is configured using the application
  • properties file by adding the following lines: spring
  • datasource
  • url=jdbc:mysql://localhost:3306/mydatabase spring
  • datasource
  • username=root spring
  • datasource
  • password=root 2
  • The above configuration will tell Spring Boot to look for a MySQL database called mydatabase on localhost (default port 3306) and to use the root user with the password root to connect to it
  • 3 If you want to use a different database, simply change the spring
  • datasource
  • * properties accordingly (e
  • , for PostgreSQL, you would use spring
  • datasource
  • url=jdbc:postgresql://localhost:5432/mydatabase)

Spring Boot Datasource Configuration Example

Spring Boot provides a very nice and easy way to configure datasource. In this example we will use MySQL as our database. We will also see how to use Spring Boot JPA with the datasource.

The first thing we need is to add the mysql-connector-java dependency in our pom.xml: mysql

mysql-connector-java
Then we need to create a file called application.properties in our src/main/resources folder and add the following lines:

spring.datasource.url=jdbc:mysql://localhost:3306/testdb?useSSL=false&serverTimezone=UTC&useLegacyDatetimeCode=false spring.datasource.username=root

spring.datasource.password=secret # Configure Hibernate spring.jpa.show-sql = true

spring.jpa..hibernate..ddl-auto = update

Now we are ready to write our code! Let’s create a simple entity class: @Entity public class User {

Spring Boot Multiple Datasource Configuration Example

If you are looking for a way to configure multiple datasources in Spring Boot, then this post is for you. I will show you how to configure multiple datasources in Spring Boot using a single application.properties file and the @ConfigurationProperties annotation. The first thing we need to do is create two separate data sources.

I am going to use MySQL for this example, but you can use any database you like. The first data source is going to be used for our main application, and the second data source is going to be used for our tests. In our application.properties file, we need to specify the configuration for each data source.

For our main application, we need to specify thespring .datasource .url , spring .

datasource .username , and spring .datasource .

password properties: spring.datasource.url=jdbc:mysql://localhost:3306/myapp spring.datasource.username=root spring.datasource..password=secret

For our test data source, we need to specify thespring .test-datasource .url , spring .

test-datasource username , and spring ..test-dataSource password properties: spring…test-dataSource…url=jdbc:mysql://localhost:3306/myapp_test spring….test-dataSource….username=root spring….

Spring Data Jpa Datasource Configuration

If you’re using Spring Data JPA in your project, you might want to configure a custom datasource. In this blog post, we’ll show you how to do that. Spring Data JPA allows you to configure a datasource for your application.

You can do this by specifying the following properties in your application.properties file: spring.data.jpa.datasource= # The JDBC URL of the database spring.data.jpa.datasource.driverClassName= # The class name of the JDBC driver spring.data.jpa..username= # The database user name springhibernate5-2..

password= # The database password Once you’ve configured these properties, you can use the @EnableJpaRepositories annotation on your configuration class to enable Spring Data JPA repositories:

Get Connection from Datasource in Spring Boot

If you are using Spring Boot and want to get a connection from your datasource, there are a few ways to do it. The most common way is to use the @Autowired annotation on a DataSource bean. This will inject the datasource into your bean and you can then call getConnection() on it.

Another way to get a connection is to use the JdbcTemplate class. This is a helper class that provides many convenient methods for working with databases in Spring. To use it, you first need to create a DataSource bean and then pass it into the JdbcTemplate constructor.

From there, you can call any of the JdbcTemplate methods, such as queryForList(), update(), or execute(). whichever approach you choose, getting a connection from your datasource in Spring Boot is easy and straightforward.

Spring Boot Datasource Connection Pool

If you’re looking for a Spring Boot-compatible datasource connection pool, look no further than the HikariCP library. HikariCP is a “zero-overhead” production ready JDBC connection pool. It’s fast, lightweight, and easy to use.

Simply add the dependency to your pom.xml file and you’re good to go!

How to Configure Datasource in Spring Boot
How to Configure Datasource in Spring Boot 2

Credit: twitter.com

How Do You Configure a Datasource in Spring?

A data source is configured in Spring using either a DriverManagerDataSource or a BasicDataSource. DriverManagerDataSource: The DriverManagerDataSource class is the simplest way to set up a data source in Spring.

All you need to do is set the driverClassName, url, username, and password properties.



BasicDataSource: If you want more control over your data source configuration, you can use the BasicDataSource class instead of DriverManagerDataSource . With BasicDataSource , you can set additional properties such as initialSize , maxActive , and maxIdle .


— Minimum number of idle connections in the pool –>

How Do I Change Datasource in Spring Boot?

In Spring Boot, you can change the datasource by setting spring.datasource.url in your application.properties file. This will override the default datasource URL and use the one you specified.

How Do I Configure Datasource?

Assuming you would like a general overview of how to configure a data source: A data source is used to store data that can be accessed by computers connected to a network. The most common type of data source is a database, which can be either local or remote.

A data source can also be a file server, an application server, or any other type of computer that stores data. To configure a data source, you will need to specify the following information: -The address of the data source

-The port number that the data source uses -The type of connection that will be used (such as HTTP or FTP)

How Do I Check My Datasource Connection in Spring Boot?

If you are using Spring Boot, checking your datasource connection is simple. In your application.properties file, you will need to set spring.datasource.url, spring.datasource.username, and spring.datasource.password properties (or their equivalents in YAML). By default, Spring Boot will try to connect to a locally running instance of MySQL on port 3306 with the username root and no password.

Once you have those properties set, simply run your application as normal and Spring Boot will automatically attempt to connect to the database using those credentials. If the connection is successful, you should see some output in the console indicating that the database was found and connected to successfully.

Conclusion

If you are looking to configure a datasource in Spring Boot, there are a couple of different ways that you can do it. One way is to use the application.properties file, and another way is to use the @ConfigurationProperties annotation. In this blog post, we will take a look at both of these methods and see how they can be used to configure a datasource in Spring Boot.

BasicDataSource: If you want more control over your data source configuration, you can use the BasicDataSource class instead of DriverManagerDataSource . With BasicDataSource , you can set additional properties such as initialSize , maxActive , and maxIdle . bean >" } } ,{"@type": "Question", "name": "How Do I Change Datasource in Spring Boot? ", "acceptedAnswer": { "@type": "Answer", "text": " In Spring Boot, you can change the datasource by setting spring.datasource.url in your application.properties file. This will override the default datasource URL and use the one you specified." } } ,{"@type": "Question", "name": "How Do I Configure Datasource? ", "acceptedAnswer": { "@type": "Answer", "text": " Assuming you would like a general overview of how to configure a data source: A data source is used to store data that can be accessed by computers connected to a network. The most common type of data source is a database, which can be either local or remote. A data source can also be a file server, an application server, or any other type of computer that stores data. To configure a data source, you will need to specify the following information: -The address of the data source -The port number that the data source uses -The type of connection that will be used (such as HTTP or FTP) -The username and password for accessing the data source" } } ,{"@type": "Question", "name": "How Do I Check My Datasource Connection in Spring Boot? ", "acceptedAnswer": { "@type": "Answer", "text": " If you are using Spring Boot, checking your datasource connection is simple. In your application.properties file, you will need to set spring.datasource.url, spring.datasource.username, and spring.datasource.password properties (or their equivalents in YAML). By default, Spring Boot will try to connect to a locally running instance of MySQL on port 3306 with the username root and no password. Once you have those properties set, simply run your application as normal and Spring Boot will automatically attempt to connect to the database using those credentials. If the connection is successful, you should see some output in the console indicating that the database was found and connected to successfully." } } ] }

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