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解决长整型数值前端获取精度丢失问题

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2025-10-28 10:40:33 +08:00
parent 5e44aef3da
commit e9cf0ed8b4
1 changed files with 18 additions and 1 deletions
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19
snowy-web-app/src/main/java/vip/xiaonuo/core/config/JacksonConfigure.java
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@@ -5,6 +5,7 @@ import com.fasterxml.jackson.core.JsonStreamContext;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.module.SimpleModule;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
@@ -37,7 +38,7 @@ public class JacksonConfigure {
public ObjectMapper jacksonObjectMapper(Jackson2ObjectMapperBuilder builder) {
ObjectMapper objectMapper = builder.createXmlMapper(false).build();
objectMapper.getSerializerProvider().setNullValueSerializer(new JsonSerializer<Object>() {
objectMapper.getSerializerProvider().setNullValueSerializer(new JsonSerializer<>() {
@Override
public void serialize(Object value, JsonGenerator gen, SerializerProvider provider) throws IOException {
// 若是APP端请求，则处理响应结果字段默认值
@@ -129,6 +130,22 @@ public class JacksonConfigure {
}
});
JsonSerializer<Long> longSerializer = new JsonSerializer<>() {
@Override
public void serialize(Long value, JsonGenerator gen, SerializerProvider provider) throws IOException {
//Long类型值过大到前端造成精度丢失，需转换成String
if (Math.abs(value) > 9007199254740991L) {
gen.writeString(value.toString());
} else {
gen.writeNumber(value);
}
}
};
objectMapper.registerModule(new SimpleModule() {{
addSerializer(Long.class, longSerializer);
addSerializer(Long.TYPE, longSerializer);
}});
return objectMapper;
}