目前,我试图迁移项目的形式乔达时间java8时API。
与java8部件更换乔达组件后,我有系列化的问题。当然,我说的依赖性和注册新JavaTimeModule()
模块。但是,当我试图序列
LocalDateTime.of(1988, 11, 10, 7, 31, 32, 0)
我接收阵列[1988,11,10,7,31,32]
但[1988,11,10,7,31,32,**0**]
预计(与毫微秒)。
所以,问题是:是否有可能进行序列化的时间与毫微秒,即使是0?
在看看杰克逊LocalDateTimeSerializer
代码后,秒和毫微秒时,他们的价值观0
明确忽略
private final void _serializeAsArrayContents(LocalDateTime value, JsonGenerator g, SerializerProvider provider) throws IOException {
g.writeNumber(value.getYear());
g.writeNumber(value.getMonthValue());
g.writeNumber(value.getDayOfMonth());
g.writeNumber(value.getHour());
g.writeNumber(value.getMinute());
int secs = value.getSecond();
int nanos = value.getNano();
if (secs > 0 || nanos > 0) {
g.writeNumber(secs);
if (nanos > 0) {
if (this.useNanoseconds(provider)) {
g.writeNumber(nanos);
} else {
g.writeNumber(value.get(ChronoField.MILLI_OF_SECOND));
}
}
}
}
为了达到预期的效果,你必须创建一个自定义序列化和JavaTimeModule
后注册其模块
public class LocalDateTimeWithNanoSerializer extends StdSerializer<LocalDateTime> {
public LocalDateTimeWithNanoSerializer() {
super(LocalDateTime.class);
}
@Override
public void serialize(LocalDateTime value, JsonGenerator gen, SerializerProvider provider) throws IOException {
gen.writeStartArray();
gen.writeNumber(value.getYear());
gen.writeNumber(value.getMonthValue());
gen.writeNumber(value.getDayOfMonth());
gen.writeNumber(value.getHour());
gen.writeNumber(value.getMinute());
gen.writeNumber(value.getSecond());
gen.writeNumber(value.getNano());
gen.writeEndArray();
}
}
public class Application {
public static void main(String[] args) {
SimpleModule myModule = new SimpleModule();
myModule.addSerializer(new LocalDateTimeWithNanoSerializer());
ObjectMapper objectMapper = new ObjectMapper()
.registerModule(new JavaTimeModule())
.registerModule(myModule)
}
}