时间格式化使用commons-lang3

pom.xml

@@ -34,6 +34,7 @@
         <druid.version>1.0.28</druid.version>
         <beetl.version>2.7.15</beetl.version>
         <swagger.version>2.2.2</swagger.version>
+        <commons-lang3.version>3.6</commons-lang3.version>
     </properties>
 
     <dependencies>
@@ -174,6 +175,11 @@
             <artifactId>springfox-swagger-ui</artifactId>
             <version>${swagger.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>${commons-lang3.version}</version>
+        </dependency>
 
     </dependencies>
 

src/main/java/com/stylefeng/guns/core/util/DateUtil.java

@@ -22,108 +22,111 @@ import java.text.SimpleDateFormat;
 import java.util.Calendar;
 import java.util.Date;
 
-public class DateUtil {
-	private final static SimpleDateFormat sdfYear = new SimpleDateFormat("yyyy");
-
-	private final static SimpleDateFormat sdfDay = new SimpleDateFormat("yyyy-MM-dd");
+import org.apache.commons.lang3.StringUtils;
+import org.apache.commons.lang3.time.DateFormatUtils;
+import org.apache.commons.lang3.time.DateUtils;
 
-	private final static SimpleDateFormat sdfDays = new SimpleDateFormat("yyyyMMdd");
-
-	private final static SimpleDateFormat sdfTime = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
-	
-	private final static SimpleDateFormat sdfmsTime = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
-	
-	private final static SimpleDateFormat allTime = new SimpleDateFormat("yyyyMMddHHmmss");
+public class DateUtil {
 
 
 	/**
 	 * 获取YYYY格式
-	 * 
+	 *
 	 * @return
 	 */
 	public static String getYear() {
-		return sdfYear.format(new Date());
+		return formatDate(new Date(), "yyyy");
 	}
 
 	/**
 	 * 获取YYYY格式
-	 * 
+	 *
 	 * @return
 	 */
 	public static String getYear(Date date) {
-		return sdfYear.format(date);
+		return formatDate(date, "yyyy");
 	}
 
 	/**
 	 * 获取YYYY-MM-DD格式
-	 * 
+	 *
 	 * @return
 	 */
 	public static String getDay() {
-		return sdfDay.format(new Date());
+		return formatDate(new Date(), "yyyy-MM-dd");
 	}
 
 	/**
 	 * 获取YYYY-MM-DD格式
-	 * 
+	 *
 	 * @return
 	 */
 	public static String getDay(Date date) {
-		return sdfDay.format(date);
+		return formatDate(date, "yyyy-MM-dd");
 	}
 
 	/**
 	 * 获取YYYYMMDD格式
-	 * 
+	 *
 	 * @return
 	 */
 	public static String getDays() {
-		return sdfDays.format(new Date());
+		return formatDate(new Date(), "yyyyMMdd");
 	}
 
 	/**
 	 * 获取YYYYMMDD格式
-	 * 
+	 *
 	 * @return
 	 */
 	public static String getDays(Date date) {
-		return sdfDays.format(date);
+		return formatDate(date, "yyyyMMdd");
 	}
 
 	/**
 	 * 获取YYYY-MM-DD HH:mm:ss格式
-	 * 
+	 *
 	 * @return
 	 */
 	public static String getTime() {
-		return sdfTime.format(new Date());
+		return formatDate(new Date(), "yyyy-MM-dd HH:mm:ss");
 	}
-	
+
 	/**
 	 * 获取YYYY-MM-DD HH:mm:ss.SSS格式
-	 * 
+	 *
 	 * @return
 	 */
 	public static String getMsTime() {
-		return sdfmsTime.format(new Date());
+		return formatDate(new Date(), "yyyy-MM-dd HH:mm:ss.SSS");
 	}
-	
+
 	/**
 	 * 获取YYYYMMDDHHmmss格式
-	 * 
+	 *
 	 * @return
 	 */
 	public static String getAllTime() {
-		return allTime.format(new Date());
+		return formatDate(new Date(), "yyyyMMddHHmmss");
 	}
 
 	/**
 	 * 获取YYYY-MM-DD HH:mm:ss格式
-	 * 
+	 *
 	 * @return
 	 */
 	public static String getTime(Date date) {
-		return sdfTime.format(date);
+		return formatDate(date, "yyyy-MM-dd HH:mm:ss");
+	}
+
+	public static String formatDate(Date date, String pattern) {
+		String formatDate = null;
+		if (StringUtils.isNotBlank(pattern)) {
+			formatDate = DateFormatUtils.format(date, pattern);
+		} else {
+			formatDate = DateFormatUtils.format(date, "yyyy-MM-dd");
+		}
+		return formatDate;
 	}
 
 	/**
@@ -144,41 +147,30 @@ public class DateUtil {
 
 	/**
 	 * 格式化日期
-	 * 
+	 *
 	 * @return
 	 */
 	public static Date parseDate(String date) {
-		try {
-			return sdfDay.parse(date);
-		} catch (ParseException e) {
-			e.printStackTrace();
-			return null;
-		}
+		return parse(date,"yyyy-MM-dd");
 	}
 
 	/**
 	 * 格式化日期
-	 * 
+	 *
 	 * @return
 	 */
 	public static Date parseTime(String date) {
-		try {
-			return sdfTime.parse(date);
-		} catch (ParseException e) {
-			e.printStackTrace();
-			return null;
-		}
+		return parse(date,"yyyy-MM-dd HH:mm:ss");
 	}
 
 	/**
 	 * 格式化日期
-	 * 
+	 *
 	 * @return
 	 */
 	public static Date parse(String date, String pattern) {
-		DateFormat fmt = new SimpleDateFormat(pattern);
 		try {
-			return fmt.parse(date);
+			return DateUtils.parseDate(date,pattern);
 		} catch (ParseException e) {
 			e.printStackTrace();
 			return null;
@@ -187,53 +179,39 @@ public class DateUtil {
 
 	/**
 	 * 格式化日期
-	 * 
+	 *
 	 * @return
 	 */
 	public static String format(Date date, String pattern) {
-		DateFormat fmt = new SimpleDateFormat(pattern);
-		return fmt.format(date);
+		return DateFormatUtils.format(date, pattern);
 	}
 
 	/**
 	 * 把日期转换为Timestamp
-	 * 
+	 *
 	 * @param date
 	 * @return
 	 */
 	public static Timestamp format(Date date) {
-		return new java.sql.Timestamp(date.getTime());
+		return new Timestamp(date.getTime());
 	}
 
 	/**
 	 * 校验日期是否合法
-	 * 
+	 *
 	 * @return
 	 */
 	public static boolean isValidDate(String s) {
-		try {
-			sdfTime.parse(s);
-			return true;
-		} catch (Exception e) {
-			// 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
-			return false;
-		}
+		return parse(s, "yyyy-MM-dd HH:mm:ss") != null;
 	}
 
 	/**
 	 * 校验日期是否合法
-	 * 
+	 *
 	 * @return
 	 */
 	public static boolean isValidDate(String s, String pattern) {
-		DateFormat fmt = new SimpleDateFormat(pattern);
-		try {
-			fmt.parse(s);
-			return true;
-		} catch (Exception e) {
-			// 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
-			return false;
-		}
+        return parse(s, pattern) != null;
 	}
 
 	public static int getDiffYear(String startTime, String endTime) {
@@ -250,7 +228,7 @@ public class DateUtil {
 
 	/**
 	 * <li>功能描述：时间相减得到天数
-	 * 
+	 *
 	 * @param beginDateStr
 	 * @param endDateStr
 	 * @return long
@@ -258,10 +236,10 @@ public class DateUtil {
 	 */
 	public static long getDaySub(String beginDateStr, String endDateStr) {
 		long day = 0;
-		java.text.SimpleDateFormat format = new java.text.SimpleDateFormat(
+		SimpleDateFormat format = new SimpleDateFormat(
 				"yyyy-MM-dd");
-		java.util.Date beginDate = null;
-		java.util.Date endDate = null;
+		Date beginDate = null;
+		Date endDate = null;
 
 		try {
 			beginDate = format.parse(beginDateStr);
@@ -277,7 +255,7 @@ public class DateUtil {
 
 	/**
 	 * 得到n天之后的日期
-	 * 
+	 *
 	 * @param days
 	 * @return
 	 */
@@ -296,7 +274,7 @@ public class DateUtil {
 
 	/**
 	 * 得到n天之后是周几
-	 * 
+	 *
 	 * @param days
 	 * @return
 	 */
@@ -325,7 +303,7 @@ public class DateUtil {
 //			return Func.toStr(value);
 //		}
 //	}
-	
+
 	public static void main(String[] args) {
 		System.out.println(getTime(new Date()));
 		System.out.println(getAfterDayWeek("3"));