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refactor(gson): 重构 JSR310TypeAdapters

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- 抽象出 TemporalAccessorTypeAdapter 类，简化了 LocalDate、LocalDateTime、ZonedDateTime 和 Instant 类型适配器的实现
This commit is contained in:
zhouxy108 2025-06-09 17:55:25 +08:00
parent a55c712349
commit 8eac9054cd
1 changed files with 43 additions and 61 deletions
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104
plusone-commons/src/main/java/xyz/zhouxy/plusone/commons/gson/adapter/JSR310TypeAdapters.java
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@ -21,6 +21,8 @@ import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.time.temporal.TemporalAccessor;
import java.time.temporal.TemporalQuery;
import com.google.gson.TypeAdapter;
import com.google.gson.stream.JsonReader;
@ -42,16 +44,15 @@ public class JSR310TypeAdapters {
* {@code LocalDate} 的 {@code TypeAdapter}，
* 用于 Gson 对 {@code LocalDate} 进行相互转换。
*/
public static final class LocalDateTypeAdapter extends TypeAdapter<LocalDate> {
private final DateTimeFormatter dateTimeFormatter;
public static final class LocalDateTypeAdapter
extends TemporalAccessorTypeAdapter<LocalDate, LocalDateTypeAdapter> {
/**
* 默认构造函数，
* 使用 {@link DateTimeFormatter#ISO_LOCAL_DATE} 进行 {@link LocalDate} 的序列化与反序列化。
*/
public LocalDateTypeAdapter() {
this.dateTimeFormatter = DateTimeFormatter.ISO_LOCAL_DATE;
this(DateTimeFormatter.ISO_LOCAL_DATE);
}
/**
@ -61,20 +62,7 @@ public class JSR310TypeAdapters {
* @param formatter 用于序列化 {@link LocalDate} 的格式化器，不可为 {@code null}。
*/
public LocalDateTypeAdapter(DateTimeFormatter formatter) {
AssertTools.checkArgumentNotNull(formatter, "formatter can not be null.");
this.dateTimeFormatter = formatter;
}
/** {@inheritDoc} */
@Override
public void write(JsonWriter out, LocalDate value) throws IOException {
out.value(dateTimeFormatter.format(value));
}
/** {@inheritDoc} */
@Override
public LocalDate read(JsonReader in) throws IOException {
return LocalDate.parse(in.nextString(), dateTimeFormatter);
super(LocalDate::from, formatter);
}
}
@ -82,16 +70,15 @@ public class JSR310TypeAdapters {
* {@code LocalDateTime} 的 {@code TypeAdapter}，
* 用于 Gson 对 {@code LocalDateTime} 进行相互转换。
*/
public static final class LocalDateTimeTypeAdapter extends TypeAdapter<LocalDateTime> {
private final DateTimeFormatter dateTimeFormatter;
public static final class LocalDateTimeTypeAdapter
extends TemporalAccessorTypeAdapter<LocalDateTime, LocalDateTimeTypeAdapter> {
/**
* 默认构造函数，
* 使用 {@link DateTimeFormatter#ISO_LOCAL_DATE_TIME} 进行 {@link LocalDateTime} 的序列化与反序列化。
*/
public LocalDateTimeTypeAdapter() {
this.dateTimeFormatter = DateTimeFormatter.ISO_LOCAL_DATE_TIME;
this(DateTimeFormatter.ISO_LOCAL_DATE_TIME);
}
/**
@ -101,20 +88,7 @@ public class JSR310TypeAdapters {
* @param formatter 用于序列化 {@link LocalDateTime} 的格式化器，不可为 {@code null}。
*/
public LocalDateTimeTypeAdapter(DateTimeFormatter formatter) {
AssertTools.checkArgumentNotNull(formatter, "formatter can not be null.");
this.dateTimeFormatter = formatter;
}
/** {@inheritDoc} */
@Override
public void write(JsonWriter out, LocalDateTime value) throws IOException {
out.value(dateTimeFormatter.format(value));
}
/** {@inheritDoc} */
@Override
public LocalDateTime read(JsonReader in) throws IOException {
return LocalDateTime.parse(in.nextString(), dateTimeFormatter);
super(LocalDateTime::from, formatter);
}
}
@ -122,16 +96,15 @@ public class JSR310TypeAdapters {
* {@code ZonedDateTime} 的 {@code TypeAdapter}，
* 用于 Gson 对 {@code ZonedDateTime} 进行相互转换。
*/
public static final class ZonedDateTimeTypeAdapter extends TypeAdapter<ZonedDateTime> {
private final DateTimeFormatter dateTimeFormatter;
public static final class ZonedDateTimeTypeAdapter
extends TemporalAccessorTypeAdapter<ZonedDateTime, ZonedDateTimeTypeAdapter> {
/**
* 默认构造函数，
* 使用 {@link DateTimeFormatter#ISO_ZONED_DATE_TIME} 进行 {@link ZonedDateTime} 的序列化与反序列化。
*/
public ZonedDateTimeTypeAdapter() {
this.dateTimeFormatter = DateTimeFormatter.ISO_ZONED_DATE_TIME;
this(DateTimeFormatter.ISO_ZONED_DATE_TIME);
}
/**
@ -141,20 +114,7 @@ public class JSR310TypeAdapters {
* @param formatter 用于序列化 {@link ZonedDateTime} 的格式化器，不可为 {@code null}。
*/
public ZonedDateTimeTypeAdapter(DateTimeFormatter formatter) {
AssertTools.checkArgumentNotNull(formatter, "formatter can not be null.");
this.dateTimeFormatter = formatter;
}
/** {@inheritDoc} */
@Override
public void write(JsonWriter out, ZonedDateTime value) throws IOException {
out.value(dateTimeFormatter.format(value));
}
/** {@inheritDoc} */
@Override
public ZonedDateTime read(JsonReader in) throws IOException {
return ZonedDateTime.parse(in.nextString(), dateTimeFormatter);
super(ZonedDateTime::from, formatter);
}
}
@ -166,18 +126,40 @@ public class JSR310TypeAdapters {
* 使用 {@link DateTimeFormatter#ISO_INSTANT} 进行 {@link Instant} 的序列化与反序列化。
*
*/
public static final class InstantTypeAdapter extends TypeAdapter<Instant> {
public static final class InstantTypeAdapter
extends TemporalAccessorTypeAdapter<Instant, InstantTypeAdapter> {
/** {@inheritDoc} */
@Override
public void write(JsonWriter out, Instant value) throws IOException {
out.value(DateTimeFormatter.ISO_INSTANT.format(value));
public InstantTypeAdapter() {
super(Instant::from, DateTimeFormatter.ISO_INSTANT);
}
}
private abstract static class TemporalAccessorTypeAdapter<
T extends TemporalAccessor,
TTypeAdapter extends TemporalAccessorTypeAdapter<T, TTypeAdapter>>
extends TypeAdapter<T> {
private final TemporalQuery<T> temporalQuery;
private final DateTimeFormatter dateTimeFormatter;
protected TemporalAccessorTypeAdapter(
TemporalQuery<T> temporalQuery, DateTimeFormatter dateTimeFormatter) {
AssertTools.checkArgumentNotNull(dateTimeFormatter, "formatter must not be null.");
this.temporalQuery = temporalQuery;
this.dateTimeFormatter = dateTimeFormatter;
}
/** {@inheritDoc} */
@Override
public Instant read(JsonReader in) throws IOException {
return Instant.parse(in.nextString());
public void write(JsonWriter out, T value) throws IOException {
out.value(dateTimeFormatter.format(value));
}
/** {@inheritDoc} */
@Override
public T read(JsonReader in) throws IOException {
return dateTimeFormatter.parse(in.nextString(), temporalQuery);
}
}