fix code

hutool-core/src/main/java/org/dromara/hutool/core/date/CalendarUtil.java

@@ -785,19 +785,26 @@ public class CalendarUtil {
 	 * 使用指定{@link DateParser}解析字符串为{@link Calendar}
 	 *
 	 * @param str     日期字符串
-	 * @param lenient 是否宽容模式
 	 * @param parser  {@link DateParser}
-	 * @return 解析后的 {@link Calendar}，解析失败返回{@code null}
+	 * @param lenient 是否宽容模式
-	 * @since 5.7.14
+	 * @return 解析后的 {@link Calendar}，解析失败抛出异常
+	 * @throws DateException 解析失败抛出此异常
 	 */
-	public static Calendar parse(final CharSequence str, final boolean lenient, final PositionDateParser parser) {
+	public static Calendar parse(final CharSequence str, final PositionDateParser parser,
+								 final boolean lenient) throws DateException{
 		Assert.notBlank(str, "Date str must be not blank!");
 		Assert.notNull(parser, "Parser must be not null!");
 		final Calendar calendar = Calendar.getInstance(parser.getTimeZone(), parser.getLocale());
 		calendar.clear();
 		calendar.setLenient(lenient);
 
-		return parser.parse(str.toString(), new ParsePosition(0), calendar) ? calendar : null;
+		final ParsePosition position = new ParsePosition(0);
+		if (parser.parse(str.toString(), position, calendar)) {
+			return calendar;
+		}
+
+		throw new DateException("Parse [{}] with format [{}] error, at: {}",
+			str, parser.getPattern(), position.getErrorIndex());
 	}
 	// endregion
 

hutool-core/src/main/java/org/dromara/hutool/core/date/DateTime.java

@@ -142,7 +142,7 @@ public class DateTime extends Date {
 		return new DateTime();
 	}
 
-	// -------------------------------------------------------------------- Constructor start
+	// region ----- Constructors
 
 	/**
 	 * 当前时间
@@ -332,7 +332,7 @@ public class DateTime extends Date {
 	 * @see DateFormatPool
 	 */
 	public DateTime(final CharSequence dateStr, final PositionDateParser dateParser) {
-		this(dateStr, dateParser, SystemUtil.getBoolean(SystemUtil.HUTOOL_DATE_LENIENT, true));
+		this(dateStr, dateParser, SystemUtil.getBoolean(SystemUtil.HUTOOL_DATE_LENIENT, false));
 	}
 
 	/**
@@ -347,9 +347,9 @@ public class DateTime extends Date {
 		this(parse(dateStr, dateParser, lenient));
 	}
 
-	// -------------------------------------------------------------------- Constructor end
+	// endregion
 
-	// -------------------------------------------------------------------- offset start
+	// region ----- offset
 
 	/**
 	 * 调整日期和时间<br>
@@ -388,9 +388,9 @@ public class DateTime extends Date {
 
 		return ObjUtil.clone(this).setTimeInternal(cal.getTimeInMillis());
 	}
-	// -------------------------------------------------------------------- offset end
+	// endregion
 
-	// -------------------------------------------------------------------- Part of Date start
+	// region ----- Part of Date
 
 	/**
 	 * 获得日期的某个部分<br>
@@ -658,7 +658,7 @@ public class DateTime extends Date {
 		final int dayOfWeek = dayOfWeek();
 		return Calendar.SATURDAY == dayOfWeek || Calendar.SUNDAY == dayOfWeek;
 	}
-	// -------------------------------------------------------------------- Part of Date end
+	// endregion
 
 	/**
 	 * 是否闰年
@@ -1107,14 +1107,7 @@ public class DateTime extends Date {
 	 * @return {@link Calendar}
 	 */
 	private static Calendar parse(final CharSequence dateStr, final PositionDateParser parser, final boolean lenient) {
-		Assert.notNull(parser, "Parser or DateFromat must be not null !");
+		final Calendar calendar = CalendarUtil.parse(dateStr, parser, lenient);
-		Assert.notBlank(dateStr, "Date String must be not blank !");
-
-		final Calendar calendar = CalendarUtil.parse(dateStr, lenient, parser);
-		if (null == calendar) {
-			throw new DateException("Parse [{}] with format [{}] error!", dateStr, parser.getPattern());
-		}
-
 		//noinspection MagicConstant
 		calendar.setFirstDayOfWeek(Week.MONDAY.getValue());
 		return calendar;

hutool-core/src/main/java/org/dromara/hutool/core/date/DateUtil.java

@@ -26,6 +26,7 @@ import org.dromara.hutool.core.date.format.parser.RegisterDateParser;
 import org.dromara.hutool.core.lang.Assert;
 import org.dromara.hutool.core.text.StrUtil;
 import org.dromara.hutool.core.text.split.SplitUtil;
+import org.dromara.hutool.core.util.SystemUtil;
 
 import javax.xml.datatype.XMLGregorianCalendar;
 import java.text.DateFormat;
@@ -1956,7 +1957,24 @@ public class DateUtil {
 	 * @return {@link SimpleDateFormat}
 	 * @since 5.5.5
 	 */
-	public static SimpleDateFormat newSimpleFormat(final String pattern, Locale locale, final TimeZone timeZone) {
+	public static SimpleDateFormat newSimpleFormat(final String pattern,
+												   final Locale locale, final TimeZone timeZone) {
+		return newSimpleFormat(pattern, locale, timeZone,
+			SystemUtil.getBoolean(SystemUtil.HUTOOL_DATE_LENIENT, false));
+	}
+
+	/**
+	 * 创建{@link SimpleDateFormat}，注意此对象非线程安全！<br>
+	 * 此对象默认为严格格式模式，即parse时如果格式不正确会报错。
+	 *
+	 * @param pattern  表达式
+	 * @param locale   {@link Locale}，{@code null}表示默认
+	 * @param timeZone {@link TimeZone}，{@code null}表示默认
+	 * @param lenient  是否宽松模式
+	 * @return {@link SimpleDateFormat}
+	 */
+	public static SimpleDateFormat newSimpleFormat(final String pattern,
+												   Locale locale, final TimeZone timeZone, final boolean lenient) {
 		if (null == locale) {
 			locale = Locale.getDefault(Locale.Category.FORMAT);
 		}
@@ -1964,7 +1982,7 @@ public class DateUtil {
 		if (null != timeZone) {
 			format.setTimeZone(timeZone);
 		}
-		format.setLenient(false);
+		format.setLenient(lenient);
 		return format;
 	}
 

hutool-core/src/test/java/org/dromara/hutool/core/date/CalendarUtilTest.java

@@ -37,8 +37,8 @@ public class CalendarUtilTest {
 	@Test
 	public void parseTest(){
 		Assertions.assertThrows(IllegalArgumentException.class, ()->{
-			final Calendar calendar = CalendarUtil.parse("2021-09-27 00:00:112323", false,
+			final Calendar calendar = CalendarUtil.parse("2021-09-27 00:00:112323",
-				DateFormatPool.NORM_DATETIME_FORMAT);
+				DateFormatPool.NORM_DATETIME_FORMAT, false);
 
 			// https://github.com/dromara/hutool/issues/1849
 			// 在使用严格模式时，秒不正确，抛出异常