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DataSizeUtil 新增format方法（issue#IB6UUX@Gitee）

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This commit is contained in:
Looly 2024-11-25 19:31:29 +08:00
parent d63410e432
commit ad9c361fc4
3 changed files with 41 additions and 5 deletions
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4
hutool-core/src/main/java/org/dromara/hutool/core/io/unit/DataSize.java
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@ -144,7 +144,7 @@ public final class DataSize implements Comparable<DataSize> {
if(null == unit){
unit = DataUnit.BYTES;
}
return new DataSize(Math.multiplyExact(amount, unit.size().toBytes()));
return new DataSize(Math.multiplyExact(amount, unit.getSize().toBytes()));
}
/**
@ -159,7 +159,7 @@ public final class DataSize implements Comparable<DataSize> {
if(null == unit){
unit = DataUnit.BYTES;
}
return new DataSize(amount.multiply(new BigDecimal(unit.size().toBytes())).longValue());
return new DataSize(amount.multiply(new BigDecimal(unit.getSize().toBytes())).longValue());
}
/**

17
hutool-core/src/main/java/org/dromara/hutool/core/io/unit/DataSizeUtil.java
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@ -16,6 +16,7 @@
package org.dromara.hutool.core.io.unit;
import org.dromara.hutool.core.array.ArrayUtil;
import org.dromara.hutool.core.text.StrUtil;
import java.text.DecimalFormat;
@ -79,4 +80,20 @@ public class DataSizeUtil {
return new DecimalFormat("#,##0." + StrUtil.repeat('#', scale))
.format(size / Math.pow(1024, digitGroups)) + delimiter + unitNames[digitGroups];
}
/**
* 根据单位，将文件大小转换为对应单位的大小
*
* @param size 文件大小
* @param fileDataUnit 单位
* @return 大小
* @since 5.8.34
*/
public static String format(final Long size, final DataUnit fileDataUnit){
if (size <= 0) {
return "0";
}
final int digitGroups = ArrayUtil.indexOf(DataUnit.UNIT_NAMES,fileDataUnit.getSuffix());
return new DecimalFormat("##0.##").format(size / Math.pow(1024, digitGroups)) + " " + DataUnit.UNIT_NAMES[digitGroups];
}
}

25
hutool-core/src/main/java/org/dromara/hutool/core/io/unit/DataUnit.java
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@ -70,16 +70,35 @@ public enum DataUnit {
public static final String[] UNIT_NAMES_SIMPLE = new String[]{"B", "K", "M", "G", "T", "P", "E"};
private final String suffix;
private final DataSize size;
/**
* 构造
*
* @param suffix 单位后缀
* @param size 单位大小
*/
DataUnit(final String suffix, final DataSize size) {
this.suffix = suffix;
this.size = size;
}
DataSize size() {
/**
* 单位后缀
*
* @return 单位后缀
* @since 5.8.34
*/
public String getSuffix() {
return this.suffix;
}
/**
* 单位大小
*
* @return 单位大小
*/
DataSize getSize() {
return this.size;
}