DateUtil.java
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package com.genersoft.iot.vmp.utils;
import java.time.Instant;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeParseException;
import java.time.temporal.TemporalAccessor;
import java.util.Locale;
/**
* 全局时间工具类
* @author lin
*/
public class DateUtil {
/**
* 兼容不规范的iso8601时间格式
*/
private static final String ISO8601_COMPATIBLE_PATTERN = "yyyy-M-d'T'H:m:s";
/**
* 用以输出标准的iso8601时间格式
*/
private static final String ISO8601_PATTERN = "yyyy-MM-dd'T'HH:mm:ss";
/**
* wvp内部统一时间格式
*/
public static final String PATTERN = "yyyy-MM-dd HH:mm:ss";
public static final String zoneStr = "Asia/Shanghai";
public static final DateTimeFormatter formatterCompatibleISO8601 = DateTimeFormatter.ofPattern(ISO8601_COMPATIBLE_PATTERN, Locale.getDefault()).withZone(ZoneId.of(zoneStr));
public static final DateTimeFormatter formatterISO8601 = DateTimeFormatter.ofPattern(ISO8601_PATTERN, Locale.getDefault()).withZone(ZoneId.of(zoneStr));
public static final DateTimeFormatter formatter = DateTimeFormatter.ofPattern(PATTERN, Locale.getDefault()).withZone(ZoneId.of(zoneStr));
public static String yyyy_MM_dd_HH_mm_ssToISO8601(String formatTime) {
return formatterISO8601.format(formatter.parse(formatTime));
}
public static String ISO8601Toyyyy_MM_dd_HH_mm_ss(String formatTime) {
return formatter.format(formatterCompatibleISO8601.parse(formatTime));
}
/**
* yyyy_MM_dd_HH_mm_ss 转时间戳
* @param formatTime
* @return
*/
public static long yyyy_MM_dd_HH_mm_ssToTimestamp(String formatTime) {
TemporalAccessor temporalAccessor = formatter.parse(formatTime);
Instant instant = Instant.from(temporalAccessor);
return instant.getEpochSecond();
}
/**
* 获取当前时间
* @return
*/
public static String getNow() {
LocalDateTime nowDateTime = LocalDateTime.now();
return formatter.format(nowDateTime);
}
/**
* 格式校验
* @param timeStr 时间字符串
* @param dateTimeFormatter 待校验的格式
* @return
*/
public static boolean verification(String timeStr, DateTimeFormatter dateTimeFormatter) {
try {
LocalDate.parse(timeStr, dateTimeFormatter);
return true;
}catch (DateTimeParseException exception) {
return false;
}
}
public static String getNowForISO8601() {
LocalDateTime nowDateTime = LocalDateTime.now();
return formatterISO8601.format(nowDateTime);
}
}