org.springframework.core.env
Class StandardEnvironment

java.lang.Object
  org.springframework.core.env.AbstractEnvironment
      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:

• system properties
• system environment variables

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.

Since:

3.1

Author:

Chris Beams

See Also:

ConfigurableEnvironment, SystemEnvironmentPropertySource, StandardServletEnvironment

Field Summary

static String	SYSTEM_ENVIRONMENT_PROPERTY_SOURCE_NAME System environment property source name: "systemEnvironment"
static String	SYSTEM_PROPERTIES_PROPERTY_SOURCE_NAME JVM system properties property source name: "systemProperties"

Fields inherited from class org.springframework.core.env.AbstractEnvironment

ACTIVE_PROFILES_PROPERTY_NAME, DEFAULT_PROFILES_PROPERTY_NAME, logger, RESERVED_DEFAULT_PROFILE_NAME

Constructor Summary

StandardEnvironment()

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, 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

SYSTEM_ENVIRONMENT_PROPERTY_SOURCE_NAME

public static final String SYSTEM_ENVIRONMENT_PROPERTY_SOURCE_NAME

System environment property source name: "systemEnvironment"

See Also:

Constant Field Values

SYSTEM_PROPERTIES_PROPERTY_SOURCE_NAME

public static final String SYSTEM_PROPERTIES_PROPERTY_SOURCE_NAME

JVM system properties property source name: "systemProperties"

See Also:

Constant Field Values

Constructor Detail

StandardEnvironment

public StandardEnvironment()

Method Detail

customizePropertySources

protected void customizePropertySources(MutablePropertySources propertySources)

Customize the set of property sources with those appropriate for any standard Java environment:

• "systemProperties"
• "systemEnvironment"

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

Overrides:

customizePropertySources in class AbstractEnvironment

See Also:

AbstractEnvironment.customizePropertySources(MutablePropertySources), AbstractEnvironment.getSystemProperties(), AbstractEnvironment.getSystemEnvironment()