我有一个问题,我的qazxsw poi调用失败,因为它无法反序列化表单的日期:
因为时区中缺少冒号。
基于RestTemplate.postForEntity(url, restRequest, RepoResponse.class)
,看起来我想改变我的this answer的RestTemplate
的日期格式。
我在这里试过一个解决方案:ObjectMapper
这给了我以下代码:
https://stackoverflow.com/a/38286322/14250
不幸的是我收到以下错误
restTemplate = new RestTemplate();
ObjectMapper objectMapper = new ObjectMapper();
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS[XXX][X]");
objectMapper.setDateFormat(format);
MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
messageConverter.setPrettyPrint(false);
messageConverter.setObjectMapper(objectMapper);
restTemplate.getMessageConverters().removeIf(m->m.getClass().getName().equals(MappingJackson2HttpMessageConverter.class.getName()));
restTemplate.getMessageConverters().add(messageConverter);
是否有一种简单的方法可以使RestTemplate支持上述日期时间格式?
当你使用com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `java.time.OffsetDateTime` (no Creators, like default construct, exist): no String-argument constructor/factory method to deserialize from String value ('2019-02-13T12:33:19.179-0500')
类和java.time.*
时,最好从注册来自Jackson
模块的JavaTimeModule
开始。
jackson-datatype-jsr310
上面的代码打印:
import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import java.time.OffsetDateTime;
public class JsonApp {
public static void main(String[] args) throws Exception {
JavaTimeModule javaTimeModule = new JavaTimeModule();
ObjectMapper mapper = new ObjectMapper();
mapper.registerModule(javaTimeModule);
String json = "{\"now\":\"2019-02-01T12:01:01.001-0500\"}";
System.out.println(mapper.readValue(json, Time.class));
}
}
class Time {
@JsonFormat(pattern = "uuuu-MM-dd'T'HH:mm:ss.SSSX")
private OffsetDateTime now = OffsetDateTime.now();
public OffsetDateTime getNow() {
return now;
}
public void setNow(OffsetDateTime now) {
this.now = now;
}
@Override
public String toString() {
return "PrintObject{" +
"now=" + now +
'}';
}
}