Appendix

This part of the reference documentation covers topics that apply to multiple modules within the core Spring Framework.

Spring Properties

SpringProperties is a static holder for properties that control certain low-level aspects of the Spring Framework. Users can configure these properties via JVM system properties or programmatically via the SpringProperties.setProperty(String key, String value) method. The latter may be necessary if the deployment environment disallows custom JVM system properties. As an alternative, these properties may be configured in a spring.properties file in the root of the classpath — for example, deployed within the application’s JAR file.

The following table lists all currently supported Spring properties.

Table 1. Supported Spring Properties
Name	Description
`spring.aop.ajc.ignore`	Instructs Spring to ignore ajc-compiled aspects for Spring AOP proxying, restoring traditional Spring behavior for scenarios where both weaving and AspectJ auto-proxying are enabled. See `AbstractAspectJAdvisorFactory` for details.
`spring.beaninfo.ignore`	Instructs Spring to use the `Introspector.IGNORE_ALL_BEANINFO` mode when calling the JavaBeans `Introspector`. See `StandardBeanInfoFactory` for details.
`spring.expression.compiler.mode`	The mode to use when compiling expressions for the Spring Expression Language.
`spring.getenv.ignore`	Instructs Spring to ignore operating system environment variables if a Spring `Environment` property — for example, a placeholder in a configuration String — isn’t resolvable otherwise. See `AbstractEnvironment` for details.
`spring.index.ignore`	Instructs Spring to ignore the components index located in `META-INF/spring.components`. See Generating an Index of Candidate Components .
`spring.jdbc.getParameterType.ignore`	Instructs Spring to ignore `java.sql.ParameterMetaData.getParameterType` completely. See the note in Batch Operations with a List of Objects.
`spring.jndi.ignore`	Instructs Spring to ignore a default JNDI environment, as an optimization for scenarios where nothing is ever to be found for such JNDI fallback searches to begin with, avoiding the repeated JNDI lookup overhead. See `JndiLocatorDelegate` for details.
`spring.objenesis.ignore`	Instructs Spring to ignore Objenesis, not even attempting to use it. See `SpringObjenesis` for details.
`spring.test.constructor.autowire.mode`	The default test constructor autowire mode to use if `@TestConstructor` is not present on a test class. See Changing the default test constructor autowire mode .
`spring.test.context.cache.maxSize`	The maximum size of the context cache in the Spring TestContext Framework. See Context Caching.
`spring.test.enclosing.configuration`	The default enclosing configuration inheritance mode to use if `@NestedTestConfiguration` is not present on a test class. See Changing the default enclosing configuration inheritance mode .