cn.acyou.leo.framework.util.UnitConversionUtil Maven / Gradle / Ivy
package cn.acyou.leo.framework.util;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.concurrent.TimeUnit;
/**
* 单位换算工具
*
* @author youfang
* @version [1.0.0, 2020-4-6 下午 09:02]
**/
public class UnitConversionUtil {
/**
* 字节转换 为可读值
*
* convertFileSize(200000L); = 195 KB
*
*
* @param size 字节大小
* @return 转换后值
*/
public static String convertFileSize(long size) {
long kb = 1024;
long mb = kb * 1024;
long gb = mb * 1024;
if (size >= gb) {
return String.format("%.1f GB", (float) size / gb);
} else if (size >= mb) {
float f = (float) size / mb;
return String.format(f > 100 ? "%.0f MB" : "%.1f MB", f);
} else if (size >= kb) {
float f = (float) size / kb;
return String.format(f > 100 ? "%.0f KB" : "%.1f KB", f);
} else {
return String.format("%d B", size);
}
}
/**
* 转换可读时间，为：时/分/秒/毫秒
*
*
* convertReadableTime(333333, TimeUnit.MILLISECONDS) = |0h 5m 33.333s|
*
*
* @param duration 持续时间
* @param unit 单位
* @return 可读的时间
*/
public static String convertReadableTime(long duration, TimeUnit unit) {
long milliseconds = TimeUnit.MILLISECONDS.convert(duration, unit);
long hours = TimeUnit.HOURS.convert(milliseconds, TimeUnit.MILLISECONDS);
if (hours > 0) {
milliseconds = milliseconds - (hours * 60 * 60 * 1000);
}
long minutes = TimeUnit.MINUTES.convert(milliseconds, TimeUnit.MILLISECONDS);
if (minutes > 0) {
milliseconds = milliseconds - (minutes * 60 * 1000);
}
long seconds = TimeUnit.SECONDS.convert(milliseconds, TimeUnit.MILLISECONDS);
if (seconds > 0) {
milliseconds = milliseconds - (seconds * 1000);
}
return String.format("|%sh %sm %s.%ss|", hours, minutes, seconds, milliseconds);
}
/**
* 转换时间 支持：(天、时、分、秒、微秒)
*
* @param duration 持续时间
* @param sourceUnit 源单位
* @param targetUnit 目标单位
* @return 转换后的时间
*/
public static BigDecimal convertTime(long duration, TimeUnit sourceUnit, TimeUnit targetUnit){
long milliseconds = TimeUnit.MILLISECONDS.convert(duration, sourceUnit);
if (TimeUnit.MILLISECONDS.equals(targetUnit)) {
return new BigDecimal(milliseconds);
}
if (TimeUnit.SECONDS.equals(targetUnit)) {
return new BigDecimal(milliseconds).divide(new BigDecimal(1000), 2, RoundingMode.HALF_UP);
}
if (TimeUnit.MINUTES.equals(targetUnit)) {
return new BigDecimal(milliseconds).divide(new BigDecimal(60 * 1000), 2, RoundingMode.HALF_UP);
}
if (TimeUnit.HOURS.equals(targetUnit)) {
return new BigDecimal(milliseconds).divide(new BigDecimal(60 * 60 * 1000), 2, RoundingMode.HALF_UP);
}
if (TimeUnit.DAYS.equals(targetUnit)) {
return new BigDecimal(milliseconds).divide(new BigDecimal(24 * 60 * 60 * 1000), 2, RoundingMode.HALF_UP);
}
return BigDecimal.ZERO;
}
}