spring 实用注解

1、实体类属性加注解，Integer时间转时间戳，用于前端展示

@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.FIELD, ElementType.METHOD})
@JacksonAnnotationsInside
@JsonSerialize(using = JsonIntDateFormatSerializer.class)
public @interface JsonIntDateFormat {
}
​
public class JsonIntDateFormatSerializer extends JsonSerializer {
    @Override
    public void serialize(Integer date, JsonGenerator gen, SerializerProvider serializers) throws IOException {
        if(null!=date){
            DateTime dateTime = new DateTime(date * 1000L);
            gen.writeString(dateTime.toString("yyyy-MM-dd HH:mm:ss"));
        }else {
            gen.writeString("");
        }
    }
}
​
public class SecurityOpExceptionInfo{
    private String uuid;//   uuid
    @JsonIntDateFormat
    private Integer loginTime;//   登录时间
}