OffsetDateTime 无效格式

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英文:

OffsetDateTime invalid format

问题

我尝试提取包含ZoneDateTime值的字符串。

ObjectMapper objectMapper = new ObjectMapper().registerModule(new JavaTimeModule()).disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
String date = "2019-06-12T22:00:00-04:00";
OffsetDateTime odt = objectMapper.readValue(date, OffsetDateTime.class);
System.out.println(odt);

Jackson报错:parserException: 出现意外字符 -

这个命令是有效的

OffsetDateTime.parse("2019-06-12T22:00:00-04:00");

因此看起来是Jackson的问题。

英文:

I try to take a string who contain a vlaue of zoneDateTime.

ObjectMapper objectMapper = new ObjectMapper().registerModule(new JavaTimeModule()).disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
String date = "2019-06-12T22:00:00-04:00";
OffsetDateTime odt = objectMapper.readValue(date, OffsetDateTime.class);
System.out.println(odt);

Jackson said: parserException: unexpected character -

This command is valid

OffsetDateTime.parse("2019-06-12T22:00:00-04:00"); 

So seem like a jackson issue

答案1

得分: 1

objectMapper.readValue(date, OffsetDateTime.class) 期望字符串 date 为有效的 JSON。

因此,使用这种方法的一种方式是从以下示例开始:

String json = "{\"odt\": \"2019-06-12T22:00:00-04:00\"}";

然后创建一个对象来存储这个 JSON,例如:

import java.time.OffsetDateTime;

public class ODT {

    private OffsetDateTime odt;

    public OffsetDateTime getOdt() {
        return odt;
    }

    public void setOdt(OffsetDateTime odt) {
        this.odt = odt;
    }
    
}

现在,以下代码将使用你的对象映射器成功处理输入:

ODT myOdt = objectMapper.readValue(json, ODT.class);
System.out.println(myOdt.getOdt());

这将打印:

2019-06-13T02:00Z

更新

要使用原始偏移量而不是 UTC 来显示此值,你可以使用以下代码:

System.out.println(myOdt.getOdt().atZoneSameInstant(ZoneId.of("-04:00")));

这将打印:

2019-06-12T22:00-04:00

这与我们起始的 JSON 字符串中的原始值相同。

英文:

The objectMapper.readValue(date, OffsetDateTime.class) expects the string date to be valid JSON.

So, one way to use this would be to start with an example such as the following:

String json = "{ \"odt\" : \"2019-06-12T22:00:00-04:00\" }";

And then create an object to store this JSON, for example:

import java.time.OffsetDateTime;

public class ODT {

    private OffsetDateTime odt;

    public OffsetDateTime getOdt() {
        return odt;
    }

    public void setOdt(OffsetDateTime odt) {
        this.odt = odt;
    }
    
}

Now, the following code will handle the input successfully, using your object mapper:

ODT myOdt = objectMapper.readValue(json, ODT.class);
System.out.println(myOdt.getOdt());

This prints:

2019-06-13T02:00Z

Update

To display this value using the original offset, instead of UTC, you can use the following:

System.out.println(myOdt.getOdt().atZoneSameInstant(ZoneId.of("-04:00")));

This prints:

2019-06-12T22:00-04:00

This is the same as the original value in our starting JSON string.

huangapple
  • 本文由 发表于 2020年7月23日 19:31:25
  • 转载请务必保留本文链接:https://go.coder-hub.com/63053211.html
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