diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9b067a1d2..b2f02a86e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,13 +3,14 @@
 
 -------------------------------------------------------------------------------------------------------------
 
-## 5.3.10 (2020-07-17)
+## 5.3.10 (2020-07-22)
 
 ### 新特性
 * 【db   】       增加DbUtil.setReturnGeneratedKeyGlobal（issue#I1NM0K@Gitee）
 * 【core 】       增加DataSize和DataSizeUtil（issue#967@Github）
 * 【core 】       ImgUtil增加异常，避免空指针（issue#I1NKXG@Gitee）
 * 【core 】       增加CRC16算法若干（pr#963@Github）
+* 【core 】       LocalDateTimeUtil增加format等方法（pr#140@Gitee）
 
 ### Bug修复
 * 【core   】     修复ZipUtil中finish位于循环内的问题（issue#961@Github）
diff --git a/hutool-core/src/main/java/cn/hutool/core/date/DateUtil.java b/hutool-core/src/main/java/cn/hutool/core/date/DateUtil.java
index c1575382a..91cdae363 100644
--- a/hutool-core/src/main/java/cn/hutool/core/date/DateUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/date/DateUtil.java
@@ -14,18 +14,13 @@ import cn.hutool.core.util.StrUtil;
 
 import java.text.DateFormat;
 import java.text.SimpleDateFormat;
+
 import java.time.Instant;
-import java.time.LocalDate;
 import java.time.LocalDateTime;
-import java.time.LocalTime;
-import java.time.OffsetDateTime;
-import java.time.OffsetTime;
 import java.time.Year;
-import java.time.ZoneId;
-import java.time.ZonedDateTime;
 import java.time.format.DateTimeFormatter;
-import java.time.format.DateTimeParseException;
 import java.time.temporal.TemporalAccessor;
+
 import java.util.Calendar;
 import java.util.Date;
 import java.util.GregorianCalendar;
@@ -498,11 +493,7 @@ public class DateUtil extends CalendarUtil {
 	 * @return 格式化后的字符串
 	 */
 	public static String format(LocalDateTime localDateTime, String format) {
-		if (null == localDateTime || StrUtil.isBlank(format)) {
-			return null;
-		}
-		DateTimeFormatter df = DateTimeFormatter.ofPattern(format);
-		return localDateTime.format(df);
+		return LocalDateTimeUtil.format(localDateTime, format);
 	}
 
 	/**
@@ -670,14 +661,7 @@ public class DateUtil extends CalendarUtil {
 	 * @return LocalDateTime对象
 	 */
 	public static LocalDateTime parseLocalDateTime(CharSequence dateStr, String format) {
-		dateStr = normalize(dateStr);
-		DateTimeFormatter df = DateTimeFormatter.ofPattern(format);
-		try {
-			return LocalDateTime.parse(dateStr, df);
-		} catch (DateTimeParseException e) {
-			// 在给定日期字符串没有时间部分时，LocalDateTime会报错，此时使用LocalDate中转转换
-			return LocalDate.parse(dateStr, df).atStartOfDay();
-		}
+		return LocalDateTimeUtil.parse(dateStr, format);
 	}
 
 	/**
@@ -835,7 +819,7 @@ public class DateUtil extends CalendarUtil {
 			} else if (length == DatePattern.UTC_MS_WITH_ZONE_OFFSET_PATTERN.length() + 2 || length == DatePattern.UTC_MS_WITH_ZONE_OFFSET_PATTERN.length() + 3) {
 				// 格式类似：2018-09-13T05:34:31.999+0800 或 2018-09-13T05:34:31.999+08:00
 				return parse(utcString, DatePattern.UTC_MS_WITH_ZONE_OFFSET_FORMAT);
-			} else if(length == DatePattern.UTC_SIMPLE_PATTERN.length()-2){
+			} else if (length == DatePattern.UTC_SIMPLE_PATTERN.length() - 2) {
 				// 格式类似：2018-09-13T05:34:31
 				return parse(utcString, DatePattern.UTC_SIMPLE_FORMAT);
 			}
@@ -937,7 +921,7 @@ public class DateUtil extends CalendarUtil {
 					// yyyy-MM-dd HH:mm
 					return parse(dateStr, DatePattern.NORM_DATETIME_MINUTE_FORMAT);
 				case 2:
-					if(StrUtil.contains(dateStr, CharUtil.DOT)){
+					if (StrUtil.contains(dateStr, CharUtil.DOT)) {
 						// yyyy-MM-dd HH:mm:ss.SSS
 						return parse(dateStr, DatePattern.NORM_DATETIME_MS_FORMAT);
 					}
@@ -1838,32 +1822,7 @@ public class DateUtil extends CalendarUtil {
 	 * @since 5.0.2
 	 */
 	public static Instant toInstant(TemporalAccessor temporalAccessor) {
-		if (null == temporalAccessor) {
-			return null;
-		}
-
-		Instant result;
-		if (temporalAccessor instanceof Instant) {
-			result = (Instant) temporalAccessor;
-		} else if (temporalAccessor instanceof LocalDateTime) {
-			result = ((LocalDateTime) temporalAccessor).atZone(ZoneId.systemDefault()).toInstant();
-		} else if (temporalAccessor instanceof ZonedDateTime) {
-			result = ((ZonedDateTime) temporalAccessor).toInstant();
-		} else if (temporalAccessor instanceof OffsetDateTime) {
-			result = ((OffsetDateTime) temporalAccessor).toInstant();
-		} else if (temporalAccessor instanceof LocalDate) {
-			result = ((LocalDate) temporalAccessor).atStartOfDay(ZoneId.systemDefault()).toInstant();
-		} else if (temporalAccessor instanceof LocalTime) {
-			// 指定本地时间转换 为Instant，取当天日期
-			result = ((LocalTime) temporalAccessor).atDate(LocalDate.now()).atZone(ZoneId.systemDefault()).toInstant();
-		} else if (temporalAccessor instanceof OffsetTime) {
-			// 指定本地时间转换 为Instant，取当天日期
-			result = ((OffsetTime) temporalAccessor).atDate(LocalDate.now()).toInstant();
-		} else {
-			result = Instant.from(temporalAccessor);
-		}
-
-		return result;
+		return TemporalAccessorUtil.toInstant(temporalAccessor);
 	}
 
 	/**
@@ -1871,8 +1830,8 @@ public class DateUtil extends CalendarUtil {
 	 *
 	 * @param instant {@link Instant}
 	 * @return {@link LocalDateTime}
-	 * @since 5.0.5
 	 * @see LocalDateTimeUtil#of(Instant)
+	 * @since 5.0.5
 	 */
 	public static LocalDateTime toLocalDateTime(Instant instant) {
 		return LocalDateTimeUtil.of(instant);
@@ -1883,8 +1842,8 @@ public class DateUtil extends CalendarUtil {
 	 *
 	 * @param date {@link Date}
 	 * @return {@link LocalDateTime}
-	 * @since 5.0.5
 	 * @see LocalDateTimeUtil#of(Date)
+	 * @since 5.0.5
 	 */
 	public static LocalDateTime toLocalDateTime(Date date) {
 		return LocalDateTimeUtil.of(date);
diff --git a/hutool-core/src/main/java/cn/hutool/core/date/LocalDateTimeUtil.java b/hutool-core/src/main/java/cn/hutool/core/date/LocalDateTimeUtil.java
index f452fb9e7..3562e85ff 100644
--- a/hutool-core/src/main/java/cn/hutool/core/date/LocalDateTimeUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/date/LocalDateTimeUtil.java
@@ -158,7 +158,7 @@ public class LocalDateTimeUtil {
 	}
 
 	/**
-	 * {@link Date}转{@link LocalDateTime}，使用默认时区
+	 * {@link TemporalAccessor}转{@link LocalDateTime}，使用默认时区
 	 *
 	 * @param temporalAccessor {@link TemporalAccessor}
 	 * @return {@link LocalDateTime}
@@ -183,6 +183,29 @@ public class LocalDateTimeUtil {
 		);
 	}
 
+	/**
+	 * {@link TemporalAccessor}转{@link LocalDate}，使用默认时区
+	 *
+	 * @param temporalAccessor {@link TemporalAccessor}
+	 * @return {@link LocalDate}
+	 * @since 5.3.10
+	 */
+	public static LocalDate ofDate(TemporalAccessor temporalAccessor) {
+		if (null == temporalAccessor) {
+			return null;
+		}
+
+		if(temporalAccessor instanceof LocalDateTime){
+			return ((LocalDateTime)temporalAccessor).toLocalDate();
+		}
+
+		return LocalDate.of(
+				TemporalAccessorUtil.get(temporalAccessor, ChronoField.YEAR),
+				TemporalAccessorUtil.get(temporalAccessor, ChronoField.MONTH_OF_YEAR),
+				TemporalAccessorUtil.get(temporalAccessor, ChronoField.DAY_OF_MONTH)
+		);
+	}
+
 	/**
 	 * 解析日期时间字符串为{@link LocalDateTime}，仅支持yyyy-MM-dd'T'HH:mm:ss格式，例如：2007-12-03T10:15:30
 	 *
@@ -225,6 +248,50 @@ public class LocalDateTimeUtil {
 		return parse(text, DateTimeFormatter.ofPattern(format));
 	}
 
+	/**
+	 * 解析日期时间字符串为{@link LocalDate}，仅支持yyyy-MM-dd'T'HH:mm:ss格式，例如：2007-12-03T10:15:30
+	 *
+	 * @param text      日期时间字符串
+	 * @return {@link LocalDate}
+	 * @since 5.3.10
+	 */
+	public static LocalDate parseDate(CharSequence text) {
+		return parseDate(text, (DateTimeFormatter)null);
+	}
+
+	/**
+	 * 解析日期时间字符串为{@link LocalDate}，格式支持日期
+	 *
+	 * @param text      日期时间字符串
+	 * @param formatter 日期格式化器，预定义的格式见：{@link DateTimeFormatter}
+	 * @return {@link LocalDate}
+	 * @since 5.3.10
+	 */
+	public static LocalDate parseDate(CharSequence text, DateTimeFormatter formatter) {
+		if (null == text) {
+			return null;
+		}
+		if (null == formatter) {
+			return LocalDate.parse(text);
+		}
+
+		return ofDate(formatter.parse(text));
+	}
+
+	/**
+	 * 解析日期字符串为{@link LocalDate}
+	 *
+	 * @param text   日期字符串
+	 * @param format 日期格式，类似于yyyy-MM-dd
+	 * @return {@link LocalDateTime}
+	 */
+	public static LocalDate parseDate(CharSequence text, String format) {
+		if (null == text) {
+			return null;
+		}
+		return parseDate(text, DateTimeFormatter.ofPattern(format));
+	}
+
 	/**
 	 * 格式化日期时间为指定格式
 	 *
@@ -233,10 +300,7 @@ public class LocalDateTimeUtil {
 	 * @return 格式化后的字符串
 	 */
 	public static String format(LocalDateTime time, DateTimeFormatter formatter) {
-		if (null == time) {
-			return null;
-		}
-		return time.format(formatter);
+		return TemporalAccessorUtil.format(time, formatter);
 	}
 
 	/**
@@ -253,6 +317,33 @@ public class LocalDateTimeUtil {
 		return format(time, DateTimeFormatter.ofPattern(format));
 	}
 
+	/**
+	 * 格式化日期时间为指定格式
+	 *
+	 * @param date      {@link LocalDate}
+	 * @param formatter 日期格式化器，预定义的格式见：{@link DateTimeFormatter}
+	 * @return 格式化后的字符串
+	 * @since 5.3.10
+	 */
+	public static String format(LocalDate date, DateTimeFormatter formatter) {
+		return TemporalAccessorUtil.format(date, formatter);
+	}
+
+	/**
+	 * 格式化日期时间为指定格式
+	 *
+	 * @param date   {@link LocalDate}
+	 * @param format 日期格式，类似于yyyy-MM-dd
+	 * @return 格式化后的字符串
+	 * @since 5.3.10
+	 */
+	public static String format(LocalDate date, String format) {
+		if (null == date) {
+			return null;
+		}
+		return format(date, DateTimeFormatter.ofPattern(format));
+	}
+
 	/**
 	 * 日期偏移,根据field不同加不同值（偏移会修改传入的对象）
 	 *
diff --git a/hutool-core/src/main/java/cn/hutool/core/date/TemporalAccessorUtil.java b/hutool-core/src/main/java/cn/hutool/core/date/TemporalAccessorUtil.java
index 8dc0a0d73..8df054c6d 100644
--- a/hutool-core/src/main/java/cn/hutool/core/date/TemporalAccessorUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/date/TemporalAccessorUtil.java
@@ -1,5 +1,16 @@
 package cn.hutool.core.date;
 
+import cn.hutool.core.util.StrUtil;
+
+import java.time.Instant;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.LocalTime;
+import java.time.OffsetDateTime;
+import java.time.OffsetTime;
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
 import java.time.temporal.TemporalAccessor;
 import java.time.temporal.TemporalField;
 
@@ -25,4 +36,79 @@ public class TemporalAccessorUtil {
 
 		return (int)field.range().getMinimum();
 	}
+
+	/**
+	 * 格式化日期时间为指定格式
+	 *
+	 * @param time      {@link TemporalAccessor}
+	 * @param formatter 日期格式化器，预定义的格式见：{@link DateTimeFormatter}
+	 * @return 格式化后的字符串
+	 * @since 5.3.10
+	 */
+	public static String format(TemporalAccessor time, DateTimeFormatter formatter) {
+		if (null == time) {
+			return null;
+		}
+
+		if(null == formatter){
+			formatter = DateTimeFormatter.ISO_LOCAL_DATE_TIME;
+		}
+
+		return formatter.format(time);
+	}
+
+	/**
+	 * 格式化日期时间为指定格式
+	 *
+	 * @param time      {@link TemporalAccessor}
+	 * @param format 日期格式
+	 * @return 格式化后的字符串
+	 * @since 5.3.10
+	 */
+	public static String format(TemporalAccessor time, String format) {
+		if (null == time) {
+			return null;
+		}
+
+		final DateTimeFormatter formatter = StrUtil.isBlank(format)
+				? null : DateTimeFormatter.ofPattern(format);
+
+		return format(time, formatter);
+	}
+
+	/**
+	 * {@link TemporalAccessor}转换为 {@link Instant}对象
+	 *
+	 * @param temporalAccessor Date对象
+	 * @return {@link Instant}对象
+	 * @since 5.3.10
+	 */
+	public static Instant toInstant(TemporalAccessor temporalAccessor) {
+		if (null == temporalAccessor) {
+			return null;
+		}
+
+		Instant result;
+		if (temporalAccessor instanceof Instant) {
+			result = (Instant) temporalAccessor;
+		} else if (temporalAccessor instanceof LocalDateTime) {
+			result = ((LocalDateTime) temporalAccessor).atZone(ZoneId.systemDefault()).toInstant();
+		} else if (temporalAccessor instanceof ZonedDateTime) {
+			result = ((ZonedDateTime) temporalAccessor).toInstant();
+		} else if (temporalAccessor instanceof OffsetDateTime) {
+			result = ((OffsetDateTime) temporalAccessor).toInstant();
+		} else if (temporalAccessor instanceof LocalDate) {
+			result = ((LocalDate) temporalAccessor).atStartOfDay(ZoneId.systemDefault()).toInstant();
+		} else if (temporalAccessor instanceof LocalTime) {
+			// 指定本地时间转换 为Instant，取当天日期
+			result = ((LocalTime) temporalAccessor).atDate(LocalDate.now()).atZone(ZoneId.systemDefault()).toInstant();
+		} else if (temporalAccessor instanceof OffsetTime) {
+			// 指定本地时间转换 为Instant，取当天日期
+			result = ((OffsetTime) temporalAccessor).atDate(LocalDate.now()).toInstant();
+		} else {
+			result = Instant.from(temporalAccessor);
+		}
+
+		return result;
+	}
 }
diff --git a/hutool-core/src/main/java/cn/hutool/core/io/checksum/CRC16.java b/hutool-core/src/main/java/cn/hutool/core/io/checksum/CRC16.java
index 72084346b..ebccedb2f 100644
--- a/hutool-core/src/main/java/cn/hutool/core/io/checksum/CRC16.java
+++ b/hutool-core/src/main/java/cn/hutool/core/io/checksum/CRC16.java
@@ -3,13 +3,15 @@ package cn.hutool.core.io.checksum;
 import cn.hutool.core.io.checksum.crc16.CRC16Checksum;
 import cn.hutool.core.io.checksum.crc16.CRC16IBM;
 
+import java.util.zip.Checksum;
+
 /**
  * CRC16 循环冗余校验码（Cyclic Redundancy Check）实现，默认IBM算法
  *
  * @author looly
  * @since 4.4.1
  */
-public class CRC16 extends CRC16Checksum {
+public class CRC16 implements Checksum {
 	private static final long serialVersionUID = 1L;
 
 	private final CRC16Checksum crc16;
diff --git a/hutool-core/src/test/java/cn/hutool/core/date/DateUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/date/DateUtilTest.java
index b3d144159..45bdf51f6 100644
--- a/hutool-core/src/test/java/cn/hutool/core/date/DateUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/date/DateUtilTest.java
@@ -751,7 +751,7 @@ public class DateUtilTest {
 		String strDate1 = DateUtil.formatLocalDateTime(ldt);
 		Assert.assertEquals(strDate, strDate1);
 		
-		String strDate2 = "2019年12月01日 17:02:30.111";
+		String strDate2 = "2019-12-01 17:02:30.111";
 		ldt = DateUtil.parseLocalDateTime(strDate2, DatePattern.NORM_DATETIME_MS_PATTERN);
 		strDate1 = DateUtil.format(ldt, DatePattern.NORM_DATETIME_PATTERN);
 		Assert.assertEquals(strDate, strDate1);
diff --git a/hutool-core/src/test/java/cn/hutool/core/date/LocalDateTimeUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/date/LocalDateTimeUtilTest.java
index 24d8ada86..32ddd03b9 100644
--- a/hutool-core/src/test/java/cn/hutool/core/date/LocalDateTimeUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/date/LocalDateTimeUtilTest.java
@@ -4,6 +4,7 @@ import org.junit.Assert;
 import org.junit.Test;
 
 import java.time.Duration;
+import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
 import java.time.temporal.ChronoUnit;
@@ -58,6 +59,15 @@ public class LocalDateTimeUtilTest {
 		Assert.assertEquals("2020-01-23T12:23:56", localDateTime.toString());
 	}
 
+	@Test
+	public void parseDateTest() {
+		LocalDate localDate = LocalDateTimeUtil.parseDate("2020-01-23");
+		Assert.assertEquals("2020-01-23", localDate.toString());
+
+		localDate = LocalDateTimeUtil.parseDate("2020-01-23T12:23:56", DateTimeFormatter.ISO_DATE_TIME);
+		Assert.assertEquals("2020-01-23", localDate.toString());
+	}
+
 	@Test
 	public void formatTest() {
 		final LocalDateTime localDateTime = LocalDateTimeUtil.parse("2020-01-23T12:23:56");
@@ -68,6 +78,13 @@ public class LocalDateTimeUtilTest {
 		Assert.assertEquals("2020-01-23", format);
 	}
 
+	@Test
+	public void formatLocalDateTest() {
+		final LocalDate localDateTime = LocalDate.parse("2020-01-23");
+		String format = LocalDateTimeUtil.format(localDateTime, DatePattern.NORM_DATE_PATTERN);
+		Assert.assertEquals("2020-01-23", format);
+	}
+
 	@Test
 	public void offset() {
 		final LocalDateTime localDateTime = LocalDateTimeUtil.parse("2020-01-23T12:23:56");
diff --git a/hutool-core/src/test/java/cn/hutool/core/io/checksum/CrcTest.java b/hutool-core/src/test/java/cn/hutool/core/io/checksum/CrcTest.java
index dbffdcc03..7c5b1cd27 100644
--- a/hutool-core/src/test/java/cn/hutool/core/io/checksum/CrcTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/io/checksum/CrcTest.java
@@ -1,10 +1,9 @@
 package cn.hutool.core.io.checksum;
 
+import cn.hutool.core.util.HexUtil;
 import org.junit.Assert;
 import org.junit.Test;
 
-import cn.hutool.core.util.HexUtil;
-
 /**
  * CRC校验单元测试
  *