使用 @Value 创建一个对象

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英文:

Create an object using @Value

问题

I'm trying to use @Value annotation to read a string parameter value and create an object using this value.
I've tried the following:

The parameter in application.yml

app:
  report:
    time-zone: +00:00

Creating the object using the parameter:

@Value("#{ java.time.ZoneId.of('app.report.time-zone') }")
ZoneId reportZoneId;

But got the error:

Unsatisfied dependency expressed through field 'reportZoneId':
Expression parsing failed

Is something wrong with the syntax or isn't it possible at all?

英文:

I'm trying to use @Value annotation to read a string parameter value and create an object using this value.
I've tried the following:

The parameter in application.yml

app:
  report:
    time-zone: +00:00

Creating the object using the parameter:

@Value("#{ java.time.ZoneId.of('app.report.time-zone') }")
ZoneId reportZoneId;

But got the error:

> Unsatisfied dependency expressed through field 'reportZoneId':
> Expression parsing failed

Is something wrong with the syntax or isn't it possible at all?

答案1

得分: 3

这是正确的语法:

@Value("#{T(java.time.ZoneId).of('${app.report.time-zone}')}")
ZoneId reportZoneId;
英文:

This is the correct syntax for the case:

@Value("#{T(java.time.ZoneId).of('${app.report.time-zone}')}")
ZoneId reportZoneId;

huangapple
  • 本文由 发表于 2023年5月22日 16:42:34
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