使用雪花算法,前端JS数值超出范围
我们在使用雪花算法时,是否和我一样遇到返回到前端的数据精度丢失。今天我们记录一下处理办法。@JacksonStdImpl public class BigNumberSerializer extends NumberSerializer { /** * 根据 JS Number.MAX_SAFE_INTEGER 与 Number.MIN_SAFE_INTEGER 得来 */ private static final long MAX_SAFE_INTEGER = 9007199254740991L; private static final long MIN_SAFE_INTEGER = -9007199254740991L; /** * 提供实例 */ public static final BigNumberSerializer INSTANCE = new BigNumberSerializer(Number.class); public BigNumberSerializer(Class<? extends Number> rawType) { super(rawType); } @Override public void serialize(Number value, JsonGenerator gen, SerializerProvider provider) throws IOException { // 超出范围 序列化位字符串 if (value.longValue() > MIN_SAFE_INTEGER && value.longValue() < MAX_SAFE_INTEGER) { super.serialize(value, gen, provider); } else { gen.writeString(value.toString()); } } }