68 lines
2.5 KiB
Java
68 lines
2.5 KiB
Java
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package com.cowr.common.utils;
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import com.jfinal.kit.StrKit;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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public class DateTimeUtil {
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public static final String ymdhms = "yyyy-MM-dd HH:mm:ss";
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public static final ThreadLocal<SimpleDateFormat> sdf = new ThreadLocal<SimpleDateFormat>() {
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protected SimpleDateFormat initialValue() {
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return new SimpleDateFormat("yyyy-MM-dd");
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}
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};
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public static final ThreadLocal<SimpleDateFormat> sdfymd = new ThreadLocal<SimpleDateFormat>() {
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protected SimpleDateFormat initialValue() {
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return new SimpleDateFormat("yyyy年MM月dd日");
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}
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};
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public static final ThreadLocal<SimpleDateFormat> sd = new ThreadLocal<SimpleDateFormat>() {
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protected SimpleDateFormat initialValue() {
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return new SimpleDateFormat("yyyy-MM");
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}
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};
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public static final ThreadLocal<SimpleDateFormat> sdfym = new ThreadLocal<SimpleDateFormat>() {
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protected SimpleDateFormat initialValue() {
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return new SimpleDateFormat("yyyy年MM月");
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}
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};
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public static final ThreadLocal<SimpleDateFormat> sdfhms = new ThreadLocal<SimpleDateFormat>() {
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protected SimpleDateFormat initialValue() {
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return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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}
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};
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public static final ThreadLocal<SimpleDateFormat> sdfhm = new ThreadLocal<SimpleDateFormat>() {
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protected SimpleDateFormat initialValue() {
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return new SimpleDateFormat("yyyy-MM-dd HH:mm");
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}
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};
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/**
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* 验证是否符合格式的时间字符串
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* @param str
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* @param fmt
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* @return
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*/
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public static boolean isValidDate(String str, String fmt) {
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if (!StrKit.notBlank(str, fmt)) {
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return false;
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}
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SimpleDateFormat sdf = new SimpleDateFormat(fmt);
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try {
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// 设置lenient为false.
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// 否则SimpleDateFormat会比较宽松地验证日期，比如2007/02/29会被接受，并转换成2007/03/01
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sdf.setLenient(false);
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Date tm = sdf.parse(str);
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return sdf.format(tm).equals(str); // 将转换后的时间再格式化，和原字符串对比，检查是否一致
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} catch (ParseException e) {
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// e.printStackTrace();
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// 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
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return false;
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}
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}
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}
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