英文:
OffsetDateTime jsonFormat allowing two type of patterns
问题
我正在使用Spring Boot实现应用程序，使用Jackson。
有没有办法为解析两种类型的日期指定JsonFormat，比如：
2020-10-06T10:15:30+01:002020-10-06T10:15:30
我当前的字段：
@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss Z")
private OffsetDateTime interval;
我需要在配置中的某个地方指定ObjectMapper吗？
我得到了以下错误：
com.fasterxml.jackson.databind.exc.InvalidFormatException: Cannot deserialize value of type 'java.time.OffsetDateTime' from String "2020-10-06T10:15:30+01:00": Failed to deserialize java.time.OffsetDateTime: (java.time.format.DateTimeParseException) Text '2020-10-06T10:15:30+01:00' could not be parsed at index 10
谢谢。
英文:
I am implementing app in Spring Boot. Using Jackson.
Is there anyway to specify JsonFormat for parsing two types of date like:
2020-10-06T10:15:30+01:002020-10-06T10:15:30
My current field:
@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss Z")
private OffsetDateTime interval;
Do I have to somewhere specify some ObjectMapper in configuration?
I am retrieving this error:
com.fasterxml.jackson.databind.exc.InvalidFormatException: Cannot deserialize value of type `java.time.OffsetDateTime` from String "2020-10-06T10:15:30+01:00": Failed to deserialize java.time.OffsetDateTime: (java.time.format.DateTimeParseException) Text '2020-10-06T10:15:30+01:00' could not be parsed at index 10
Regards
答案1
得分: 3
代码部分不提供翻译。以下为翻译好的内容：
你需要使用带有可选区域偏移的 DateTimeFormatter 进行解析，因此你需要一个自定义的 JsonDeserializer：
Test
public class Test {
@JsonDeserialize(using = OffsetDateTimeOptionalZoneDeserializer.class)
private OffsetDateTime interval;
public static void main(String[] args) throws Exception {
String json = "["
+ "{ \"interval\": \"2020-10-06T10:15:30+01:00\" },"
+ "{ \"interval\": \"2020-10-06T10:15:30Z\" },"
+ "{ \"interval\": \"2020-10-06T10:15:30\" }"
+ "]";
ObjectMapper mapper = new ObjectMapper();
Test[] tests = mapper.readValue(json, Test[].class);
for (Test t : tests)
System.out.println(t.interval);
}
}
Output
2020-10-06T10:15:30+01:00
2020-10-06T10:15:30Z
2020-10-06T10:15:30Z
英文:
You need to parse using a DateTimeFormatter with optional zone offset, so you need a custom JsonDeserializer:
public class OffsetDateTimeOptionalZoneDeserializer extends StdScalarDeserializer<OffsetDateTime> {
private static final DateTimeFormatter formatter = new DateTimeFormatterBuilder()
.append(DateTimeFormatter.ISO_LOCAL_DATE_TIME)
.optionalStart()
.appendOffsetId()
.optionalEnd()
.parseDefaulting(ChronoField.OFFSET_SECONDS, 0)
.toFormatter();
public OffsetDateTimeOptionalZoneDeserializer() { super(OffsetDateTime.class); }
@Override
public OffsetDateTime deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
return OffsetDateTime.parse(p.getText(), formatter);
}
}
Test
public class Test {
@JsonDeserialize(using = OffsetDateTimeOptionalZoneDeserializer.class)
private OffsetDateTime interval;
public static void main(String[] args) throws Exception {
String json = "[" +
"{ \"interval\": \"2020-10-06T10:15:30+01:00\" }," +
"{ \"interval\": \"2020-10-06T10:15:30Z\" }," +
"{ \"interval\": \"2020-10-06T10:15:30\" }" +
"]";
ObjectMapper mapper = new ObjectMapper();
Test[] tests = mapper.readValue(json, Test[].class);
for (Test t : tests)
System.out.println(t.interval);
}
}
Output
2020-10-06T10:15:30+01:00
2020-10-06T10:15:30Z
2020-10-06T10:15:30Z
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