package cn.iocoder.yudao.framework.common.util.json.databind;
|
|
import tools.jackson.core.JacksonException;
|
import tools.jackson.core.JsonGenerator;
|
import tools.jackson.databind.SerializationContext;
|
import tools.jackson.databind.annotation.JacksonStdImpl;
|
import tools.jackson.databind.ser.std.StdScalarSerializer;
|
|
import java.math.BigDecimal;
|
import java.math.BigInteger;
|
|
/**
|
* Long 序列化规则
|
*
|
* 会将超长 long 值转换为 string,解决前端 JavaScript 最大安全整数是 2^53-1 的问题
|
*
|
* @author 星语
|
*/
|
@JacksonStdImpl
|
public class NumberSerializer extends StdScalarSerializer<Number> {
|
|
private static final long MAX_SAFE_INTEGER = 9007199254740991L;
|
private static final long MIN_SAFE_INTEGER = -9007199254740991L;
|
|
public static final NumberSerializer INSTANCE = new NumberSerializer(Number.class);
|
|
@SuppressWarnings("unchecked")
|
public NumberSerializer(Class<? extends Number> rawType) {
|
super((Class<Number>) rawType);
|
}
|
|
@Override
|
public void serialize(Number value, JsonGenerator gen, SerializationContext serializers) throws JacksonException {
|
// 超出范围 序列化位字符串
|
if (value.longValue() > MIN_SAFE_INTEGER && value.longValue() < MAX_SAFE_INTEGER) {
|
writeNumber(value, gen);
|
} else {
|
gen.writeString(value.toString());
|
}
|
}
|
|
private static void writeNumber(Number value, JsonGenerator gen) throws JacksonException {
|
if (value instanceof BigDecimal decimal) {
|
gen.writeNumber(decimal);
|
} else if (value instanceof BigInteger integer) {
|
gen.writeNumber(integer);
|
} else if (value instanceof Double doubleValue) {
|
gen.writeNumber(doubleValue);
|
} else if (value instanceof Float floatValue) {
|
gen.writeNumber(floatValue);
|
} else if (value instanceof Long longValue) {
|
gen.writeNumber(longValue);
|
} else {
|
gen.writeNumber(value.intValue());
|
}
|
}
|
}
|