Spring Framework

Class StandardEnvironment

  extended by org.springframework.core.env.AbstractEnvironment
      extended by org.springframework.core.env.StandardEnvironment
All Implemented Interfaces:
ConfigurableEnvironment, ConfigurablePropertyResolver, Environment, PropertyResolver
Direct Known Subclasses:
StandardPortletEnvironment, StandardServletEnvironment

public class StandardEnvironment
extends AbstractEnvironment

Environment implementation suitable for use in 'standard' (i.e. non-web) applications.

In addition to the usual functions of a ConfigurableEnvironment such as property resolution and profile-related operations, this implementation configures two default property sources, to be searched in the following order:

That is, if the key "xyz" is present both in the JVM system properties as well as in the set of environment variables for the current process, the value of key "xyz" from system properties will return from a call to environment.getProperty("xyz"). This ordering is chosen by default because system properties are per-JVM, while environment variables may be the same across many JVMs on a given system. Giving system properties precedence allows for overriding of environment variables on a per-JVM basis.

These default property sources may be removed, reordered, or replaced; and additional property sources may be added using the MutablePropertySources instance available from AbstractEnvironment.getPropertySources(). See ConfigurableEnvironment Javadoc for usage examples.

See SystemEnvironmentPropertySource Javadoc for details on special handling of property names in shell environments (e.g. Bash) that disallow period characters in variable names.

Chris Beams
See Also:
ConfigurableEnvironment, SystemEnvironmentPropertySource, StandardServletEnvironment

Field Summary
          System environment property source name: "systemEnvironment"
          JVM system properties property source name: "systemProperties"
Fields inherited from class org.springframework.core.env.AbstractEnvironment
Constructor Summary
Method Summary
protected  void customizePropertySources(MutablePropertySources propertySources)
          Customize the set of property sources with those appropriate for any standard Java environment: "systemProperties" "systemEnvironment"
Methods inherited from class org.springframework.core.env.AbstractEnvironment
acceptsProfiles, addActiveProfile, containsProperty, doGetActiveProfiles, doGetDefaultProfiles, getActiveProfiles, getConversionService, getDefaultProfiles, getProperty, getProperty, getProperty, getProperty, getPropertyAsClass, getPropertySources, getRequiredProperty, getRequiredProperty, getReservedDefaultProfiles, getSystemEnvironment, getSystemProperties, isProfileActive, merge, resolvePlaceholders, resolveRequiredPlaceholders, setActiveProfiles, setConversionService, setDefaultProfiles, setPlaceholderPrefix, setPlaceholderSuffix, setRequiredProperties, setValueSeparator, toString, validateProfile, validateRequiredProperties
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail


public static final java.lang.String SYSTEM_ENVIRONMENT_PROPERTY_SOURCE_NAME
System environment property source name: "systemEnvironment"

See Also:
Constant Field Values


public static final java.lang.String SYSTEM_PROPERTIES_PROPERTY_SOURCE_NAME
JVM system properties property source name: "systemProperties"

See Also:
Constant Field Values
Constructor Detail


public StandardEnvironment()
Method Detail


protected void customizePropertySources(MutablePropertySources propertySources)
Customize the set of property sources with those appropriate for any standard Java environment:

Properties present in "systemProperties" will take precedence over those in "systemEnvironment".

customizePropertySources in class AbstractEnvironment
See Also:
AbstractEnvironment.customizePropertySources(MutablePropertySources), AbstractEnvironment.getSystemProperties(), AbstractEnvironment.getSystemEnvironment()

Spring Framework