@Value

In this tutorial, we will show you how to set a default value for

@Value

1. @ValueExamples

To set a default value in Spring expression, use

Elvis operator

:

#expression value

Few examples :

@Value
mongodbPort
@Value
mongodbUrl
@Value
age

P.S

@Value

has been available since Spring 3.0

2.
@Valueand Property Examples

To set a default value for property placeholder :

$property value

Few examples :

@Value
mongodbUrl
@Value
mongodbUrl
@Value
mongodbUrl

config.properties

mongodb.url=1.2.3.4
mongodb.db=hello

For “config” bean.

Follow up
Must register a static

PropertySourcesPlaceholderConfigurer

bean in either XML or annotation, so that Spring

@Value

know how to interpret

${}

@Bean    PropertySourcesPlaceholderConfigurer propertyConfigIn
PropertySourcesPlaceholderConfigurer