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fix bug

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This commit is contained in:
Looly 2023-09-21 11:28:48 +08:00
parent 8fbdc2139b
commit d3f9baf187
3 changed files with 310 additions and 30 deletions
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59
hutool-core/src/main/java/org/dromara/hutool/core/comparator/VersionComparator.java
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@ -13,15 +13,14 @@
package org.dromara.hutool.core.comparator;
import org.dromara.hutool.core.convert.Convert;
import org.dromara.hutool.core.regex.PatternPool;
import org.dromara.hutool.core.math.NumberUtil;
import org.dromara.hutool.core.regex.ReUtil;
import org.dromara.hutool.core.text.StrUtil;
import org.dromara.hutool.core.text.split.SplitUtil;
import org.dromara.hutool.core.util.ObjUtil;
import java.io.Serializable;
import java.util.Comparator;
import java.util.List;
import java.util.regex.Pattern;
/**
* 版本比较器<br>
@ -33,19 +32,34 @@ import java.util.List;
* @author Looly
* @since 4.0.2
*/
public class VersionComparator implements Comparator<String>, Serializable {
private static final long serialVersionUID = 8083701245147495562L;
public class VersionComparator extends NullComparator<String> implements Serializable {
private static final long serialVersionUID = 1L;
/** 单例 */
private static Pattern PATTERN_PRE_NUMBERS= Pattern.compile("^\\d+");
/**
* 单例
*/
public static final VersionComparator INSTANCE = new VersionComparator();
/**
* 默认构造
*/
public VersionComparator() {
this(false);
}
/**
* 默认构造
*
* @param nullGreater 是否{@code null}最大，排在最后
*/
public VersionComparator(final boolean nullGreater) {
super(nullGreater, (VersionComparator::compareVersion));
}
// -----------------------------------------------------------------------------------------------------
/**
* 比较两个版本<br>
* null版本排在最小：即：
@ -63,44 +77,35 @@ public class VersionComparator implements Comparator<String>, Serializable {
* @param version1 版本1
* @param version2 版本2
*/
@Override
public int compare(final String version1, final String version2) {
if(ObjUtil.equals(version1, version2)) {
return 0;
}
if (version1 == null && version2 == null) {
return 0;
} else if (version1 == null) {// null视为最小版本，排在前
return -1;
} else if (version2 == null) {
return 1;
}
private static int compareVersion(final String version1, final String version2) {
final List<String> v1s = SplitUtil.splitTrim(version1, StrUtil.DOT);
final List<String> v2s = SplitUtil.splitTrim(version2, StrUtil.DOT);
int diff = 0;
final int minLength = Math.min(v1s.size(), v2s.size());// 取最小长度值
final int minSize = Math.min(v1s.size(), v2s.size());// 取最小长度值
String v1;
String v2;
for (int i = 0; i < minLength; i++) {
for (int i = 0; i < minSize; i++) {
v1 = v1s.get(i);
v2 = v2s.get(i);
// 先比较长度
diff = v1.length() - v2.length();
if (0 == diff) {
// 长度相同，直接比较字符或数字
diff = v1.compareTo(v2);
}else {
// https://gitee.com/dromara/hutool/pulls/1043
//不同长度的先比较前面的数字；前面数字不相等时，按数字大小比较；数字相等的时候，继续按长度比较，
final int v1Num = Convert.toInt(ReUtil.get(PatternPool.NUMBERS, v1, 0), 0);
final int v2Num = Convert.toInt(ReUtil.get(PatternPool.NUMBERS, v2, 0), 0);
} else {
// 不同长度，且含有字母
if(!NumberUtil.isNumber(v1) || !NumberUtil.isNumber(v2)){
//不同长度的先比较前面的数字；前面数字不相等时，按数字大小比较；数字相等的时候，继续按长度比较，类似于 103 > 102a
final int v1Num = Convert.toInt(ReUtil.get(PATTERN_PRE_NUMBERS, v1, 0), 0);
final int v2Num = Convert.toInt(ReUtil.get(PATTERN_PRE_NUMBERS, v2, 0), 0);
final int diff1 = v1Num - v2Num;
if (diff1 != 0) {
diff = diff1;
}
}
if(diff != 0) {
}
if (diff != 0) {
//已有结果，结束
break;
}

18
hutool-core/src/test/java/org/dromara/hutool/core/comparator/IssueI81N3HTest.java Normal file
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@ -0,0 +1,18 @@
package org.dromara.hutool.core.comparator;
import org.dromara.hutool.core.collection.ListUtil;
import org.dromara.hutool.core.io.IoUtil;
import org.dromara.hutool.core.io.resource.ResourceUtil;
import org.junit.jupiter.api.Test;
import java.util.ArrayList;
import java.util.List;
public class IssueI81N3HTest {
@Test
void sortTest() {
final List<String> list = IoUtil.readUtf8Lines(ResourceUtil.getStream("IssueI81N3H.list"), new ArrayList<>());
ListUtil.sort(list, VersionComparator.INSTANCE.reversed());
}
}

257
hutool-core/src/test/resources/IssueI81N3H.list Normal file
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@ -0,0 +1,257 @@
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