add test

hutool-core/src/main/java/cn/hutool/core/convert/impl/DateConverter.java

@@ -4,6 +4,7 @@ import cn.hutool.core.convert.AbstractConverter;
 import cn.hutool.core.convert.ConvertException;
 import cn.hutool.core.date.DateTime;
 import cn.hutool.core.date.DateUtil;
+import cn.hutool.core.date.format.GlobalCustomFormat;
 import cn.hutool.core.util.StrUtil;
 
 import java.time.temporal.TemporalAccessor;
@@ -120,6 +121,11 @@ public class DateConverter extends AbstractConverter<java.util.Date> {
 	 * @return 目标类型对象
 	 */
 	private java.util.Date wrap(long mills) {
+		if(GlobalCustomFormat.FORMAT_SECONDS.equals(this.format)){
+			// Unix时间戳
+			return DateUtil.date(mills * 1000);
+		}
+
 		// 返回指定类型
 		if (java.util.Date.class == targetType) {
 			return new java.util.Date(mills);

hutool-core/src/main/java/cn/hutool/core/convert/impl/TemporalAccessorConverter.java

@@ -5,6 +5,7 @@ import cn.hutool.core.convert.Convert;
 import cn.hutool.core.convert.ConvertException;
 import cn.hutool.core.date.DateTime;
 import cn.hutool.core.date.DateUtil;
+import cn.hutool.core.date.format.GlobalCustomFormat;
 import cn.hutool.core.util.ObjectUtil;
 import cn.hutool.core.util.StrUtil;
 
@@ -177,7 +178,16 @@ public class TemporalAccessorConverter extends AbstractConverter<TemporalAccesso
 		} else if(Era.class.equals(this.targetType)){
 			return IsoEra.of(Math.toIntExact(time));
 		}
-		return parseFromInstant(Instant.ofEpochMilli(time), null);
+
+		final Instant instant;
+		if(GlobalCustomFormat.FORMAT_SECONDS.equals(this.format)){
+			// https://gitee.com/dromara/hutool/issues/I6IS5B
+			// Unix时间戳
+			instant = Instant.ofEpochSecond(time);
+		}else{
+			instant = Instant.ofEpochMilli(time);
+		}
+		return parseFromInstant(instant, null);
 	}
 
 	/**

hutool-core/src/main/java/cn/hutool/core/date/format/GlobalCustomFormat.java

@@ -18,7 +18,13 @@ import java.util.function.Function;
  */
 public class GlobalCustomFormat {
 
+	/**
+	 * 格式：秒时间戳（Unix时间戳）
+	 */
 	public static final String FORMAT_SECONDS = "#sss";
+	/**
+	 * 格式：毫秒时间戳
+	 */
 	public static final String FORMAT_MILLISECONDS = "#SSS";
 
 	private static final Map<CharSequence, Function<Date, String>> formatterMap;

hutool-jwt/src/main/java/cn/hutool/jwt/Claims.java

@@ -1,6 +1,7 @@
 package cn.hutool.jwt;
 
 import cn.hutool.core.codec.Base64;
+import cn.hutool.core.date.format.GlobalCustomFormat;
 import cn.hutool.core.lang.Assert;
 import cn.hutool.core.map.MapUtil;
 import cn.hutool.json.JSONConfig;
@@ -21,7 +22,7 @@ public class Claims implements Serializable {
 	private static final long serialVersionUID = 1L;
 
 	// 时间使用秒级时间戳表示
-	private final JSONConfig CONFIG = JSONConfig.create().setDateFormat("#sss");
+	private final JSONConfig CONFIG = JSONConfig.create().setDateFormat(GlobalCustomFormat.FORMAT_SECONDS);
 
 	private JSONObject claimJSON;
 
@@ -43,9 +44,10 @@ public class Claims implements Serializable {
 
 	/**
 	 * 加入多个Claims属性
+	 *
 	 * @param headerClaims 多个Claims属性
 	 */
-	protected void putAll(Map<String, ?> headerClaims){
+	protected void putAll(Map<String, ?> headerClaims) {
 		if (MapUtil.isNotEmpty(headerClaims)) {
 			for (Map.Entry<String, ?> entry : headerClaims.entrySet()) {
 				setClaim(entry.getKey(), entry.getValue());
@@ -90,8 +92,8 @@ public class Claims implements Serializable {
 		return this.claimJSON.toString();
 	}
 
-	private void init(){
+	private void init() {
-		if(null == this.claimJSON){
+		if (null == this.claimJSON) {
 			this.claimJSON = new JSONObject(CONFIG);
 		}
 	}

hutool-jwt/src/test/java/cn/hutool/jwt/IssueI6IS5BTest.java

@@ -0,0 +1,51 @@
+package cn.hutool.jwt;
+
+import cn.hutool.core.date.DateUtil;
+import cn.hutool.core.date.LocalDateTimeUtil;
+import cn.hutool.json.JSONObject;
+import cn.hutool.json.JSONUtil;
+import lombok.Data;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.nio.charset.StandardCharsets;
+import java.time.LocalDateTime;
+import java.util.Date;
+
+public class IssueI6IS5BTest {
+	@Test
+	public void payloadToBeanTest() {
+		final LocalDateTime iat = LocalDateTimeUtil.of(DateUtil.parse("2023-03-03"));
+		final JwtToken jwtToken = new JwtToken();
+		jwtToken.setIat(iat);
+		final String token = JWTUtil.createToken(JSONUtil.parseObj(jwtToken), "123".getBytes(StandardCharsets.UTF_8));
+		Assert.assertEquals("eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpYXQiOjE2Nzc3NzI4MDB9.SXU_mm1wT5lNoK-Dq5Y8f3BItv_44zuAlyeWLqajpXg", token);
+		final JSONObject payloads = JWTUtil.parseToken(token).getPayloads();
+		Assert.assertEquals("{\"iat\":1677772800}", payloads.toString());
+		final JwtToken o = payloads.toBean(JwtToken.class);
+		Assert.assertEquals(iat, o.getIat());
+	}
+
+	@Data
+	static class JwtToken {
+		private LocalDateTime iat;
+	}
+
+	@Test
+	public void payloadToBeanTest2() {
+		final Date iat = DateUtil.parse("2023-03-03");
+		final JwtToken2 jwtToken = new JwtToken2();
+		jwtToken.setIat(iat);
+		final String token = JWTUtil.createToken(JSONUtil.parseObj(jwtToken), "123".getBytes(StandardCharsets.UTF_8));
+		Assert.assertEquals("eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpYXQiOjE2Nzc3NzI4MDB9.SXU_mm1wT5lNoK-Dq5Y8f3BItv_44zuAlyeWLqajpXg", token);
+		final JSONObject payloads = JWTUtil.parseToken(token).getPayloads();
+		Assert.assertEquals("{\"iat\":1677772800}", payloads.toString());
+		final JwtToken2 o = payloads.toBean(JwtToken2.class);
+		Assert.assertEquals(iat, o.getIat());
+	}
+
+	@Data
+	static class JwtToken2 {
+		private Date iat;
+	}
+}