Spring @ConditionalOnProperty具有Value ="value1"或"value2" [英] Spring @ConditionalOnProperty havingValue = "value1" or "value2"

问题描述

我正在寻找configurationOnProperty用法，可以在其中指定考虑多个值，如下所示

I am looking for configurationOnProperty usage where I can specify to consider more than one value as shown below

例如:@ConditionalOnProperty(value = "test.configname", havingValue = "value1" or "value2")

OR

我想知道是否可以以havingValue != "value3"

例如:@ConditionalOnProperty(value = "test.configname", havingValue != "value3")

请让我知道是否可以通过spring boot配置实现以上任一目的.

Please let me know if there is a way to achieve any one of the above in spring boot configuration.

推荐答案

Spring Boot提供了 AllNestedConditions 和

Spring Boot provides AnyNestedCondition for created a condition that will match when any nested condition matches. It also provides AllNestedConditions and NoneNestedConditions for matching when all nested conditions or no nested conditions match respectively.

对于要匹配value1或value2值的特定情况，您可以创建一个AnyNestedCondition，如下所示:

For your specific case where you want to match a value of value1 or value2 you would create an AnyNestedCondition like this:

class ConfigNameCondition extends AnyNestedCondition {

    public ConfigNameCondition() {
        super(ConfigurationPhase.PARSE_CONFIGURATION);
    }

    @ConditionalOnProperty(name = "test.configname", havingValue = "value1")
    static class Value1Condition {

    }

    @ConditionalOnProperty(name = "test.configname", havingValue = "value2")
    static class Value2Condition {

    }

}

然后将其与@Conditional一起使用，例如:

And then use it with @Conditional, like this for example:

@Bean
@Conditional(ConfigNameCondition.class)
public SomeBean someBean() {
    return new SomeBean();
}

如嵌套条件注释的javadoc中所示(链接到上面)，嵌套条件可以是任何类型.在这种情况下，它们不必都具有相同的类型.

As shown in the javadoc for the nested condition annotations (linked to above) the nested conditions can be of any type. There's no need for them to all be of the same type as they are in this particular case.

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