Spring Property Placeholder Propertyplaceholderconfigurer

Http://www.cnblogs.com/yl2755/archive/2012/05/06/2486752.html
Propertyplaceholderconfigurer is the implementation of a bean factory post processor, which is an implementation of the Beanfactorypostprocessor interface. Propertyplaceholderconfigurer can place attribute values in a context (configuration file) in another separate standard Java properties file. Replaces the value in the specified properties file with ${key} in the XML file.  In this case, only the properties file needs to be modified, not the XML configuration file. Csdn-spring Property Placeholder Propertyplaceholderconfigurer use iteye-spring to read a configuration file by Propertyplaceholderconfigurer

Spring Property Placeholder Propertyplaceholderconfigurer