1、序列化

public class CustomDateSerializer extends JsonSerializer {

        @Override
        public void serialize(Date value, JsonGenerator jgen, SerializerProvider provider) throws IOException, JsonProcessingException {
                SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
                String formattedDate = formatter.format(value);
                jgen.writeString(formattedDate);
        }
}
然後在你的POJO上找到日期的get方法
@JsonSerialize(using = CustomDateSerializer.class)
public Date getCreateAt() {
     return createAt;
}
 

2、反序列化

public class CustomJsonDateDeserializer extends JsonDeserializer<Date> {  
  
    @Override  
    public Date deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {  
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  
                String date = jp.getText();  
                try {  
                    return format.parse(date);  
                } catch (ParseException e) {  
                    throw new RuntimeException(e);  
                }  
    }  
  
}  
且在欄位的setter上加上註解
@JsonDeserialize(using = CustomJsonDateDeserializer.class)