在我的 Grails 应用程序中，从数据库读取的原始日期等于:

{ endDate=2015-10-19 19:00:00.0}

{"endDate": "2015-10-19T16:00:00Z"}

最佳答案

根据您所在的时区，2015-10-19 19:00:00.0和 2015-10-19T16:00:00Z可能不是不同的时间，它们可能只是同一时间(瞬间)的不同表示。

就我而言，我使用自定义编码器来确保我的 API 的 JSON 响应中的时间始终使用 UTC 时区。我的自定义编码器如下所示:

import org.springframework.stereotype.Component

@Component
class DateMarshaller implements CustomMarshaller {

    @Override
    def getSupportedTypes() {
        Date
    }

    @Override
    Closure getMarshaller() {
        { Date date ->

            TimeZone tz = TimeZone.getTimeZone('UTC')
            date?.format("yyyy-MM-dd'T'HH:mm:ss'Z'", tz)
        }
    }
}

interface CustomMarshaller {

    /**
     * Indicates the type(s) of object that this marshaller supports
     * @return a {@link Class} or collection of {@link Class} 
     * if the marshaller supports multiple types
     */
    def getSupportedTypes()

    Closure getMarshaller()
}

import grails.converters.JSON
import org.springframework.context.ApplicationContext
import org.springframework.context.ApplicationContextAware

import javax.annotation.PostConstruct

class MarshallerRegistrarService implements ApplicationContextAware {

    static transactional = false

    ApplicationContext applicationContext

    // a combination of eager bean initialization and @PostConstruct ensures that the marshallers are registered when
    // the app (or a test thereof) starts
    boolean lazyInit = false

    @PostConstruct
    void registerMarshallers() {

        Map<String, CustomMarshaller> marshallerBeans = applicationContext.getBeansOfType(CustomMarshaller)

        marshallerBeans.values().each { CustomMarshaller customMarshaller ->

            customMarshaller.supportedTypes.each { Class supportedType ->
                JSON.registerObjectMarshaller supportedType, customMarshaller.marshaller
            }
        }
    }
}

https://stackoverflow.com/questions/37533228/