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Merge branch '5.2.x'

This commit is contained in:
Sam Brannen 2020-06-19 14:42:50 +02:00
parent 1e501f2583 d07be59801
commit c418cef68f
1 changed files with 12 additions and 8 deletions
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20
spring-beans/src/main/java/org/springframework/beans/factory/annotation/Value.java
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@ -1,5 +1,5 @@
/* /*
* Copyright 2002-2019 the original author or authors. * Copyright 2002-2020 the original author or authors.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -23,14 +23,17 @@ import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target; import java.lang.annotation.Target;
/** /**
* Annotation at the field or method/constructor parameter level * Annotation used at the field or method/constructor parameter level
* that indicates a default value expression for the affected argument. * that indicates a default value expression for the annotated element.
* *
* <p>Typically used for expression-driven dependency injection. Also supported * <p>Typically used for expression-driven or property-driven dependency injection.
* for dynamic resolution of handler method parameters, e.g. in Spring MVC. * Also supported for dynamic resolution of handler method arguments &mdash; for
* example, in Spring MVC.
* *
* <p>A common use case is to assign default field values using * <p>A common use case is to inject values using
* <code>#{systemProperties.myProp}</code> style expressions. * <code>#{systemProperties.myProp}</code> style SpEL (Spring Expression Language)
* expressions. Alternatively, values may be injected using
* <code>${my.app.myProp}</code> style property placeholders.
* *
* <p>Note that actual processing of the {@code @Value} annotation is performed * <p>Note that actual processing of the {@code @Value} annotation is performed
* by a {@link org.springframework.beans.factory.config.BeanPostProcessor * by a {@link org.springframework.beans.factory.config.BeanPostProcessor
@ -55,7 +58,8 @@ import java.lang.annotation.Target;
public @interface Value { public @interface Value {
/** /**
* The actual value expression &mdash; for example, <code>#{systemProperties.myProp}</code>. * The actual value expression such as <code>#{systemProperties.myProp}</code>
* or property placeholder such as <code>${my.app.myProp}</code>.
*/ */
String value(); String value();