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　　public class PropertyOverrideConfigurer

　　extends PropertyResourceConfigurer

　　Property resource configurer that overrides bean property values in an application

　　 context definition. It pushes values from a properties file into bean definitions.

　　 Configuration lines are expected to be of the following form:

beanName.property=value

　　 Example properties file:

dataSource.driverClassName=com.mysql.jdbc.Driver

　　 dataSource.url=jdbc:mysql:mydb

　　 In contrast to PropertyPlaceholderConfigurer, the original definition can have default

　　 values or no values at all for such bean properties. If an overriding properties file does

　　 not have an entry for a certain bean property, the default context definition is used.

　　 Note that the context definition is not aware of being overridden;

　　 so this is not immediately obvious when looking at the XML definition file.

　　 Furthermore, note that specified override values are always literal values;

　　 they are not translated into bean references. This also applies when the original

　　 value in the XML bean definition specifies a bean reference.

　　 In case of multiple PropertyOverrideConfigurers that define different values for

　　 the same bean property, the last one will win (due to the overriding mechanism).

　　 Property values can be converted after reading them in, through overriding

　　 the convertPropertyValue method. For example, encrypted values

　　 can be detected and decrypted accordingly before processing them.

　　Since:

　　12.03.2003

　　Author:

　　Juergen Hoeller, Rod Johnson

　　See Also:

　　
DEFAULT_BEAN_NAME_SEPARATOR

　　public static finalStringDEFAULT_BEAN_NAME_SEPARATOR

　　The default bean name separator.

　　See Also:

　　
setBeanNameSeparator

　　publicvoidsetBeanNameSeparator(StringbeanNameSeparator)

　　Set the separator to expect between bean name and property path.

　　 Default is a dot (".").

　　
setIgnoreInvalidKeys

　　publicvoidsetIgnoreInvalidKeys(booleanignoreInvalidKeys)

　　Set whether to ignore invalid keys. Default is "false".

　　 If you ignore invalid keys, keys that do not follow the beanName.property format

　　 (or refer to invalid bean names or properties) will just be logged at debug level.

　　 This allows one to have arbitrary other keys in a properties file.

　　
hasPropertyOverridesFor

　　publicbooleanhasPropertyOverridesFor(StringbeanName)

　　Were there overrides for this bean?

　　 Only valid after processing has occurred at least once.

　　Parameters:

　　beanName - name of the bean to query status for

　　Returns:

　　whether there were property overrides for the named bean

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