弹簧注释不支持 Spel @Scheduled.fixedDelayString
2022-09-04 23:38:57
我想在我的属性文件中配置秒,然后我想在注释中将其转换为millis。fixedDelay
@Scheduled
我期望这能起作用:
@Scheduled(fixedDelayString = "#{${my.scheduler.fixed.delay} * 1000}")
但它会引发以下异常:
由以下原因导致: java.lang.IllegalStateException: 遇到无效@Scheduled方法 'myMethod': Invalid fixedDelayString 值 “#{5 * 1000}” - 无法在 org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.processScheduled(ScheduledAnnotationBeanPostProcessor.java:384) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE] at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor$1.doWith(ScheduledAnNotationBeanPostProcessor.java:227) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
${my.scheduler.fixed.delay}
已正确解析,但表达式未解析。
我试图配置我自己的:StringValueResolver
private static class CustomValueResolver
implements StringValueResolver {
private final ConfigurableBeanFactory beanFactory;
private final ExpressionParser expressionParser;
public CustomValueResolver(final ConfigurableBeanFactory beanFactory, final ExpressionParser expressionParser) {
this.beanFactory = beanFactory;
this.expressionParser = expressionParser;
}
@Override
public String resolveStringValue(
final String strVal) {
String value = this.beanFactory.resolveEmbeddedValue(strVal);
if (value.startsWith("#{")) {
value = this.expressionParser.parseExpression(value).getValue(String.class);
}
return value;
}
}
但是我没有找到注入我的自定义的方法。CustomValueResolver
我走的路是对还是错?