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避免Long精度丢失

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阿沐 2025-01-27 10:41:21 +08:00
parent 0d24eb7d4e
commit cb4886cbd2
2 changed files with 45 additions and 0 deletions
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41
maku-framework/src/main/java/net/maku/framework/common/config/BigNumberSerializer.java Normal file
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@ -0,0 +1,41 @@
package net.maku.framework.common.config;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.annotation.JacksonStdImpl;
import com.fasterxml.jackson.databind.ser.std.NumberSerializer;
import java.io.IOException;
/**
* 解决js精度丢失问题
*
* @author 阿沐 babamu@126.com
* <a href="https://maku.net">MAKU</a>
*/
@JacksonStdImpl
public class BigNumberSerializer extends NumberSerializer {
/**
* JS Number.MAX_SAFE_INTEGER Number.MIN_SAFE_INTEGER
*/
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());
}
}
}

4
maku-framework/src/main/java/net/maku/framework/common/config/JacksonConfig.java
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@ -38,6 +38,10 @@ public class JacksonConfig {
builder.deserializerByType(LocalTime.class,
new LocalTimeDeserializer(DateTimeFormatter.ofPattern("HH:mm:ss")));
// builder.serializationInclusion(JsonInclude.Include.NON_NULL);
// 避免Long精度丢失，超过JS最大精度，使用String类型
builder.serializerByType(Long.class, BigNumberSerializer.INSTANCE);
builder.failOnUnknownProperties(false);
builder.featuresToDisable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
};