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Spring Boot Properties

Spring Boot Properties with features, project, starter project wizard, cli, application, annotations, dm, properties, actuator, thymeleaf view, jpa, jdbc

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Spring Boot Application Properties

Spring Boot Framework comes with a built-in mechanism for application configuration using a file called application.properties. It is located inside the src/main/resources folder, as shown in the following figure.

Spring Boot application properties

Spring Boot provides various properties that can be configured in the application.properties file. The properties have default values. We can set a property(s) for the Spring Boot application. Spring Boot also allows us to define our own property if required.

The application.properties file allows us to run an application in a different environment. In short, we can use the application.properties file to:

  • Configure the Spring Boot framework
  • define our application custom configuration properties

Example of application.properties

#configuring application name
spring.application.name = demoApplication
#configuring port
server.port = 8081

In the above example, we have configured the application name and port. The port 8081 denotes that the application runs on port 8081.

Note: The lines started with # are comments.

YAML Properties File

Spring Boot provides another file to configure the properties is called yml file. The Yaml file works because the Snake YAML jar is present in the classpath. Instead of using the application.properties file, we can also use the application.yml file, but the Yml file should be present in the classpath.

Example of application.yml

spring:
application:
name: demoApplication
server:
port: 8081

In the above example, we have configured the application name and port. The port 8081 denotes that the application runs on port 8081.

Spring Boot Property Categories

There are sixteen categories of Spring Boot Property are as follows:

  1. Core Properties
  2. Cache Properties
  3. Mail Properties
  4. JSON Properties
  5. Data Properties
  6. Transaction Properties
  7. Data Migration Properties
  8. Integration Properties
  9. Web Properties
  10. Templating Properties
  11. Server Properties
  12. Security Properties
  13. RSocket Properties
  14. Actuator Properties
  15. DevTools Properties
  16. Testing Properties

Application Properties Table

The following tables provide a list of common Spring Boot properties:

Property Default Values Description
Debug false It enables debug logs.
spring.application.name It is used to set the application name.
spring.application.admin.enabled false It is used to enable admin features of the application.
spring.config.name application It is used to set config file name.
spring.config.location It is used to config the file name.
server.port 8080 Configures the HTTP server port
server.servlet.context-path It configures the context path of the application.
logging.file.path It configures the location of the log file.
spring.banner.charset UTF-8 Banner file encoding.
spring.banner.location classpath:banner.txt It is used to set banner file location.
logging.file It is used to set log file name. For example, data.log.
spring.application.index It is used to set application index.
spring.application.name It is used to set the application name.
spring.application.admin.enabled false It is used to enable admin features for the application.
spring.config.location It is used to config the file locations.
spring.config.name application It is used to set config the file name.
spring.mail.default-encoding UTF-8 It is used to set default MimeMessage encoding.
spring.mail.host It is used to set SMTP server host. For example, smtp.example.com.
spring.mail.password It is used to set login password of the SMTP server.
spring.mail.port It is used to set SMTP server port.
spring.mail.test-connection false It is used to test that the mail server is available on startup.
spring.mail.username It is used to set login user of the SMTP server.
spring.main.sources It is used to set sources for the application.
server.address It is used to set network address to which the server should bind to.
server.connection-timeout It is used to set time in milliseconds that connectors will wait for another HTTP request before closing the connection.
server.context-path It is used to set context path of the application.
server.port 8080 It is used to set HTTP port.
server.server-header It is used for the Server response header (no header is sent if empty)
server.servlet-path / It is used to set path of the main dispatcher servlet
server.ssl.enabled It is used to enable SSL support.
spring.http.multipart.enabled True It is used to enable support of multi-part uploads.
spring.servlet.multipart.max-file-size 1MB It is used to set max file size.
spring.mvc.async.request-timeout It is used to set time in milliseconds.
spring.mvc.date-format It is used to set date format. For example, dd/MM/yyyy.
spring.mvc.locale It is used to set locale for the application.
spring.social.facebook.app-id It is used to set application's Facebook App ID.
spring.social.linkedin.app-id It is used to set application's LinkedIn App ID.
spring.social.twitter.app-id It is used to set application's Twitter App ID.
security.basic.authorize-mode role It is used to set security authorize mode to apply.
security.basic.enabled true It is used to enable basic authentication.
Spring.test.database.replace any Type of existing DataSource to replace.
Spring.test.mockmvc.print default MVC Print option
spring.freemaker.content-type text/html Content Type value
server.server-header Value to use for the server response header.
spring.security.filter.dispatcher-type async, error, request Security filter chain dispatcher types.
spring.security.filter.order -100 Security filter chain order.
spring.security.oauth2.client.registration.* OAuth client registrations.
spring.security.oauth2.client.provider.* OAuth provider details.





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