本一部分涵盖了核心 Spring 框架核心中的多个模块的主题.

1. Spring 属性

{api-spring-framework}/core/SpringProperties.html[SpringProperties] 是控制 Spring 框架某些低层面的属性的静态容器。用户可以通过 JVM 系统属性或通过 SpringProperties 以编程方式配置这些属性 例如: SpringProperties.setProperty(String key, String value) 方法。如果部署环境不允许自定义 JVM 系统属性，则可能需要使用后者。作为一种替代方法，这些属性可以在 spring 中配置。属性文件在类路径的根目录中—例如，部署在应用程序的 JAR 文件中.

下表列出了所有当前支持的 Spring 属性。

Table 1. Supported Spring Properties
Name Description

spring.beaninfo.ignore

Instructs Spring to use the Introspector.IGNORE_ALL_BEANINFO mode when calling the JavaBeans Introspector. See {api-spring-framework}/beans/CachedIntrospectionResults.html#IGNORE_BEANINFO_PROPERTY_NAME[CachedIntrospectionResults] 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 {api-spring-framework}/core/env/AbstractEnvironment.html#IGNORE_GETENV_PROPERTY_NAME[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 {api-spring-framework}/jndi/JndiLocatorDelegate.html#IGNORE_JNDI_PROPERTY_NAME[JndiLocatorDelegate] for details.

spring.objenesis.ignore

Instructs Spring to ignore Objenesis, not even attempting to use it. See {api-spring-framework}/objenesis/SpringObjenesis.html#IGNORE_OBJENESIS_PROPERTY_NAME[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.