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🐞 fix: LocalDateTime 序列化器不支持 JsonProperty 问题

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This commit is contained in:
preschooler 2025-12-18 23:07:32 +08:00
parent 3861fdf451
commit 8af29bf6fd
1 changed files with 36 additions and 8 deletions
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44
yudao-framework/yudao-common/src/main/java/cn/iocoder/yudao/framework/common/util/json/databind/TimestampLocalDateTimeSerializer.java
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@ -2,6 +2,7 @@ package cn.iocoder.yudao.framework.common.util.json.databind;
import cn.hutool.core.util.ReflectUtil;
import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
@ -11,6 +12,9 @@ import java.lang.reflect.Field;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* 基于时间戳的 LocalDateTime 序列化器
@ -21,19 +25,43 @@ public class TimestampLocalDateTimeSerializer extends JsonSerializer<LocalDateTi
public static final TimestampLocalDateTimeSerializer INSTANCE = new TimestampLocalDateTimeSerializer();
private static final Map<Class<?>, Map<String, Field>> FIELD_CACHE = new ConcurrentHashMap<>();
private Map<String, Field> buildFieldMap(Class<?> clazz) {
Map<String, Field> fieldMap = new HashMap<>();
for (Field field : ReflectUtil.getFields(clazz)) {
String fieldName = field.getName();
JsonProperty jsonProperty = field.getAnnotation(JsonProperty.class);
if (jsonProperty != null) {
String value = jsonProperty.value();
if (!value.isEmpty() && !"\u0000".equals(value)) {
fieldName = value;
}
}
fieldMap.put(fieldName, field);
}
return fieldMap;
}
@Override
public void serialize(LocalDateTime value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
// 情况一：有 JsonFormat 自定义注解，则使用它。https://github.com/YunaiV/ruoyi-vue-pro/pull/1019
String fieldName = gen.getOutputContext().getCurrentName();
if (fieldName != null) {
Class<?> clazz = gen.getOutputContext().getCurrentValue().getClass();
Field field = ReflectUtil.getField(clazz, fieldName);
JsonFormat[] jsonFormats = field.getAnnotationsByType(JsonFormat.class);
if (jsonFormats.length > 0) {
String pattern = jsonFormats[0].pattern();
DateTimeFormatter formatter = DateTimeFormatter.ofPattern(pattern);
gen.writeString(formatter.format(value));
return;
Object currentValue = gen.getOutputContext().getCurrentValue();
if (currentValue != null) {
Class<?> clazz = currentValue.getClass();
Map<String, Field> fieldMap = FIELD_CACHE.computeIfAbsent(clazz, this::buildFieldMap);
Field field = fieldMap.get(fieldName);
if (field != null && field.isAnnotationPresent(JsonFormat.class)) {
JsonFormat jsonFormat = field.getAnnotation(JsonFormat.class);
try {
DateTimeFormatter formatter = DateTimeFormatter.ofPattern(jsonFormat.pattern());
gen.writeString(formatter.format(value));
return;
} catch (Exception ignored) {
}
}
}
}