| | |
| | | |
| | | import java.io.IOException; |
| | | |
| | | /** |
| | | * 超出 JS 最大最小值 处理 |
| | | * |
| | | * @author Lion Li |
| | | */ |
| | | @JacksonStdImpl |
| | | public class BigNumberSerializer extends NumberSerializer { |
| | | |
| | | private static final long JS_NUM_MAX = 9007199254740992L; |
| | | private static final long JS_NUM_MIN = -9007199254740992L; |
| | | /** |
| | | * 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) { |
| | |
| | | |
| | | @Override |
| | | public void serialize(Number value, JsonGenerator gen, SerializerProvider provider) throws IOException { |
| | | if (value.longValue() >= JS_NUM_MIN && value.longValue() <= JS_NUM_MAX) { |
| | | // 超出范围 序列化位字符串 |
| | | if (value.longValue() > MAX_SAFE_INTEGER && value.longValue() < MIN_SAFE_INTEGER) { |
| | | super.serialize(value, gen, provider); |
| | | } else { |
| | | gen.writeString(value.toString()); |