Question

我可以通过调用spring rest api来获取ZoneDateTime。我在json中的日期采用以下格式：

{
    "2017-04-24T15:13:06-05:00"
}

通过在ApplicationConfiguration.class中配置以下代码，我能够在Spring 4 MVC中实现这一点：

@Override
     public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
            ObjectMapper objectMapper = new ObjectMapper(); 
            objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

            objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
            objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL); 

            objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);

            objectMapper.registerModule(new JavaTimeModule()); 

            MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter(); 
            converter.setObjectMapper(objectMapper); 

            converters.add(converter); 
        }

现在，当我想将json日期发送到spring rest for post操作时。我得到以下例外：

WARN : org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver - Failed to read HTTP message: org.springframework.http.converter.HttpMessageNotReadableException: Could not read document: Can not construct instance of java.time.ZonedDateTime from String value ("2017-04-24T15:13:06-05:00"): Text '2017-04-24T15:13:06-05:00' could not be parsed at index 19
nested exception is com.fasterxml.jackson.databind.exc.InvalidFormatException: Can not construct instance of java.time.ZonedDateTime from String value ("2017-04-24T15:13:06-05:00"): Text '2017-04-24T15:13:06-05:00' could not be parsed at index 19

我尝试使用CustomDeserialization.class并使用@JsonDeserialize（CustomDeserialization.class）注释ZoneDateTime字段，但这也无效。

在Spring 4 MVC中将具有日期的json转换为ZoneDateTime的最佳方法是什么？

Answer 1

如果你想使用JSON发送日期，我相信最简单的方法是先将Date转换为Long类型，然后再将其作为JSON发送。像这样：

public class MyJson {

    Long date;

    public MyJson() {

    }

    public MyJson(Long date) {
        this.date = date;
    }

    public Long getDate() {
        return date;
    }

    public void setDate(Long date) {
        this.date = date;
    }
}

以及主要方法：

    Date date = new Date();
    MyJson json = new MyJson(date.getTime());

    ObjectMapper objectMapper = new ObjectMapper();     
    String strJson = objectMapper.writeValueAsString(json);

    MyJson result = objectMapper.readValue(strJson, MyJson.class);

在Spring 4 MVC中将Json字符串日期转换为ZoneDateTime

1 个答案: