Spring Property Injection Concepts: Difference between revisions
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=Overview= | =Overview= | ||
This section refers to '''property injection''', which is the process that allows external data to be provided to the application runtime at startup or while it is running, in form of properties, environment variables and other means. The component configuration, or bean wiring, is addressed in the "[[Spring_Dependency_Injection_and_Inversion_of_Control_Container_Concepts#Configuration_Model|Dependency Injection and Inversion of Control Container Concepts - Configuration Model]]" section. | This section refers to '''property injection''', which is the process that allows external data, known as [[#Configuration_Property|configuration properties]], to be provided to the application runtime at startup or while it is running, in form of Java system properties, environment variables and other means. The component configuration, or bean wiring, is addressed in the "[[Spring_Dependency_Injection_and_Inversion_of_Control_Container_Concepts#Configuration_Model|Dependency Injection and Inversion of Control Container Concepts - Configuration Model]]" section. | ||
=The Environment Abstraction= | =The Environment Abstraction= | ||
Revision as of 19:15, 21 November 2018
Internal
Overview
This section refers to property injection, which is the process that allows external data, known as configuration properties, to be provided to the application runtime at startup or while it is running, in form of Java system properties, environment variables and other means. The component configuration, or bean wiring, is addressed in the "Dependency Injection and Inversion of Control Container Concepts - Configuration Model" section.
The Environment Abstraction
Injecting Properties into Beans
Property Injection and Auto-Configuration
Sources of Properties
Precedence
Profiles
application.properties
Application Arguments
Environment Variables
Profile
TODO
- Diagram with property sources and their relative priority, including the configuration service (chapter 14).
- Augment https://kb.novaordis.com/index.php/Spring_Boot_Concepts#Autoconfiguration with specialized sections on property injection for DataSources, etc.
- How do I read the effective values of all configuration properties during testing and at runtime?
- You can figure out the active profile from within a Spring application by @Autowire-ing org.springframework.core.env.Environment and inspecting it.