How to configure multiple data sources in Spring Boot JPA?

Configuring multiple data sources in Spring Boot requires the following steps: 1. Import the necessary dependencies: Add spring-boot-starter-data-jpa and the corresponding database driver dependencies to the pom.xml file. 2. Configure data source 1: Configure the relevant properties of the first data source, such as the database URL, username, and password, in the application.properties or application.yml file. 3. Create a configuration class for the first data source: Create a configuration class, annotate it with @Configuration, and use @EnableJpaRepositories annotation to specify the scanning path for JPA repository interfaces. 4. Configure data source 2: Configure the relevant properties of the second data source in the application.properties or application.yml file. 5. Create a configuration class for the second data source: Create a configuration class, annotate it with @Configuration, and use @EnableJpaRepositories annotation to specify the scanning path for JPA repository interfaces. 6. Create entities and JPA repository interfaces for both data sources. 7. Use @Qualifier annotation to specify the data source to be used: Use @Qualifier annotation to specify the data source to be used in the necessary places, such as on JPA repository interfaces. These are the basic steps for configuring multiple data sources using JPA, for more detailed instructions, refer to the Spring Boot official documentation or related tutorials.