org.springframework.web.context.support
Class ServletContextPropertyPlaceholderConfigurer

java.lang.Object
  org.springframework.core.io.support.PropertiesLoaderSupport
      org.springframework.beans.factory.config.PropertyResourceConfigurer
          org.springframework.beans.factory.config.PlaceholderConfigurerSupport
              org.springframework.beans.factory.config.PropertyPlaceholderConfigurer
                  org.springframework.web.context.support.ServletContextPropertyPlaceholderConfigurer

All Implemented Interfaces:

Aware, BeanFactoryAware, BeanNameAware, BeanFactoryPostProcessor, Ordered, PriorityOrdered, ServletContextAware

Deprecated. in Spring 3.1 in favor of PropertySourcesPlaceholderConfigurer in conjunction with StandardServletEnvironment.

@Deprecated
public class ServletContextPropertyPlaceholderConfigurer
extends PropertyPlaceholderConfigurer
implements ServletContextAware

Subclass of PropertyPlaceholderConfigurer that resolves placeholders as ServletContext init parameters (that is, web.xml context-param entries).

Can be combined with "locations" and/or "properties" values in addition to web.xml context-params. Alternatively, can be defined without local properties, to resolve all placeholders as web.xml context-params (or JVM system properties).

If a placeholder could not be resolved against the provided local properties within the application, this configurer will fall back to ServletContext parameters. Can also be configured to let ServletContext init parameters override local properties (contextOverride=true).

Optionally supports searching for ServletContext attributes: If turned on, an otherwise unresolvable placeholder will matched against the corresponding ServletContext attribute, using its stringified value if found. This can be used to feed dynamic values into Spring's placeholder resolution.

If not running within a WebApplicationContext (or any other context that is able to satisfy the ServletContextAware callback), this class will behave like the default PropertyPlaceholderConfigurer. This allows for keeping ServletContextPropertyPlaceholderConfigurer definitions in test suites.

Since:

1.1.4

Author:

Juergen Hoeller

See Also:

PropertiesLoaderSupport.setLocations(org.springframework.core.io.Resource[]), PropertiesLoaderSupport.setProperties(java.util.Properties), PropertyPlaceholderConfigurer.setSystemPropertiesModeName(java.lang.String), setContextOverride(boolean), setSearchContextAttributes(boolean), ServletContext.getInitParameter(String), ServletContext.getAttribute(String)

Field Summary

Fields inherited from class org.springframework.beans.factory.config.PropertyPlaceholderConfigurer

SYSTEM_PROPERTIES_MODE_FALLBACK, SYSTEM_PROPERTIES_MODE_NEVER, SYSTEM_PROPERTIES_MODE_OVERRIDE

Fields inherited from class org.springframework.beans.factory.config.PlaceholderConfigurerSupport

DEFAULT_PLACEHOLDER_PREFIX, DEFAULT_PLACEHOLDER_SUFFIX, DEFAULT_VALUE_SEPARATOR, ignoreUnresolvablePlaceholders, nullValue, placeholderPrefix, placeholderSuffix, valueSeparator

Fields inherited from class org.springframework.core.io.support.PropertiesLoaderSupport

localOverride, localProperties, logger, XML_FILE_EXTENSION

Fields inherited from interface org.springframework.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

ServletContextPropertyPlaceholderConfigurer()
Deprecated.

Method Summary

protected String	resolvePlaceholder(String placeholder, Properties props) Deprecated. Resolve the given placeholder using the given properties.
protected String	resolvePlaceholder(String placeholder, ServletContext servletContext, boolean searchContextAttributes) Deprecated. Resolves the given placeholder using the init parameters and optionally also the attributes of the given ServletContext.
void	setContextOverride(boolean contextOverride) Deprecated. Set whether ServletContext init parameters (and optionally also ServletContext attributes) should override local properties within the application.
void	setSearchContextAttributes(boolean searchContextAttributes) Deprecated. Set whether to search for matching a ServletContext attribute before checking a ServletContext init parameter.
void	setServletContext(ServletContext servletContext) Deprecated. Set the ServletContext to resolve placeholders against.

Methods inherited from class org.springframework.beans.factory.config.PropertyPlaceholderConfigurer

parseStringValue, processProperties, resolvePlaceholder, resolveSystemProperty, setSearchSystemEnvironment, setSystemPropertiesMode, setSystemPropertiesModeName

Methods inherited from class org.springframework.beans.factory.config.PlaceholderConfigurerSupport

doProcessProperties, setBeanFactory, setBeanName, setIgnoreUnresolvablePlaceholders, setNullValue, setPlaceholderPrefix, setPlaceholderSuffix, setValueSeparator

Methods inherited from class org.springframework.beans.factory.config.PropertyResourceConfigurer

convertProperties, convertProperty, convertPropertyValue, getOrder, postProcessBeanFactory, setOrder

Methods inherited from class org.springframework.core.io.support.PropertiesLoaderSupport

loadProperties, mergeProperties, setFileEncoding, setIgnoreResourceNotFound, setLocalOverride, setLocation, setLocations, setProperties, setPropertiesArray, setPropertiesPersister

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ServletContextPropertyPlaceholderConfigurer

public ServletContextPropertyPlaceholderConfigurer()

Deprecated.

Method Detail

setContextOverride

public void setContextOverride(boolean contextOverride)

Deprecated.

Set whether ServletContext init parameters (and optionally also ServletContext attributes) should override local properties within the application. Default is "false": ServletContext settings serve as fallback.

Note that system properties will still override ServletContext settings, if the system properties mode is set to "SYSTEM_PROPERTIES_MODE_OVERRIDE".

See Also:

setSearchContextAttributes(boolean), PropertyPlaceholderConfigurer.setSystemPropertiesModeName(java.lang.String), PropertyPlaceholderConfigurer.SYSTEM_PROPERTIES_MODE_OVERRIDE

setSearchContextAttributes

public void setSearchContextAttributes(boolean searchContextAttributes)

Deprecated.

Set whether to search for matching a ServletContext attribute before checking a ServletContext init parameter. Default is "false": only checking init parameters.

If turned on, the configurer will look for a ServletContext attribute with the same name as the placeholder, and use its stringified value if found. Exposure of such ServletContext attributes can be used to dynamically override init parameters defined in web.xml, for example in a custom context listener.

See Also:

ServletContext.getInitParameter(String), ServletContext.getAttribute(String)

setServletContext

public void setServletContext(ServletContext servletContext)

Deprecated.

Set the ServletContext to resolve placeholders against. Will be auto-populated when running in a WebApplicationContext.

If not set, this configurer will simply not resolve placeholders against the ServletContext: It will effectively behave like a plain PropertyPlaceholderConfigurer in such a scenario.

Specified by:

setServletContext in interface ServletContextAware

Parameters:

servletContext - ServletContext object to be used by this object

See Also:

InitializingBean.afterPropertiesSet(), ApplicationContextAware.setApplicationContext(org.springframework.context.ApplicationContext)

resolvePlaceholder

protected String resolvePlaceholder(String placeholder,
                                    Properties props)

Deprecated.

Description copied from class: PropertyPlaceholderConfigurer

Resolve the given placeholder using the given properties. The default implementation simply checks for a corresponding property key.

Subclasses can override this for customized placeholder-to-key mappings or custom resolution strategies, possibly just using the given properties as fallback.

Note that system properties will still be checked before respectively after this method is invoked, according to the system properties mode.

Overrides:

resolvePlaceholder in class PropertyPlaceholderConfigurer

Parameters:

placeholder - the placeholder to resolve

props - the merged properties of this configurer

Returns:

the resolved value, of null if none

See Also:

PropertyPlaceholderConfigurer.setSystemPropertiesMode(int)

resolvePlaceholder

protected String resolvePlaceholder(String placeholder,
                                    ServletContext servletContext,
                                    boolean searchContextAttributes)

Deprecated.

Resolves the given placeholder using the init parameters and optionally also the attributes of the given ServletContext.

Default implementation checks ServletContext attributes before init parameters. Can be overridden to customize this behavior, potentially also applying specific naming patterns for parameters and/or attributes (instead of using the exact placeholder name).

Parameters:

placeholder - the placeholder to resolve

servletContext - the ServletContext to check

searchContextAttributes - whether to search for a matching ServletContext attribute

Returns:

the resolved value, of null if none

See Also:

ServletContext.getInitParameter(String), ServletContext.getAttribute(String)