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修复 CharSequenceUtil.brief 方法字符串越界，以及maxLength部分值时，结果与预期不符的BUG修复

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This commit is contained in:
王良 2022-01-05 15:11:09 +08:00
parent cdf105589d
commit 2449716921
2 changed files with 38 additions and 21 deletions
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43
hutool-core/src/main/java/cn/hutool/core/text/CharSequenceUtil.java
View File

@ -1090,7 +1090,7 @@ public class CharSequenceUtil {
/**
* 指定范围内查找指定字符
*
* @param text 字符串
* @param text 字符串
* @param searchChar 被查找的字符
* @param start 起始位置，如果小于0，从0开始查找
* @param end 终止位置，如果超过str.length()则默认查找到字符串末尾
@ -1207,9 +1207,9 @@ public class CharSequenceUtil {
* 指定范围内查找字符串<br>
* fromIndex 为搜索起始位置，从后往前计数
*
* @param text 字符串
* @param text 字符串
* @param searchStr 需要查找位置的字符串
* @param from 起始位置，从后往前计数
* @param from 起始位置，从后往前计数
* @param ignoreCase 是否忽略大小写
* @return 位置
* @since 3.2.1
@ -2015,9 +2015,9 @@ public class CharSequenceUtil {
}
if (counterOfDoubleByte % 2 != 0) {
if(halfUp){
if (halfUp) {
len += 1;
}else{
} else {
len -= 1;
}
}
@ -2486,8 +2486,8 @@ public class CharSequenceUtil {
* StrUtil.repeatAndJoin("?", 5, null) = "?????"
* </pre>
*
* @param str 被重复的字符串
* @param count 数量
* @param str 被重复的字符串
* @param count 数量
* @param delimiter 分界符
* @return 连接后的字符串
* @since 4.0.1
@ -3538,7 +3538,7 @@ public class CharSequenceUtil {
final int strLength = str.length();
final int searchStrLength = searchStr.length();
if(strLength < searchStrLength){
if (strLength < searchStrLength) {
// issue#I4M16G@Gitee
return str(str);
}
@ -4201,11 +4201,17 @@ public class CharSequenceUtil {
* 将给定字符串，变成 "xxx...xxx" 形式的字符串
*
* <ul>
* <li>abcdef 5 -》 a...f</li>
* <li>abcdef 4 -》 a..f</li>
* <li>abcdef 3 -》 a.f</li>
* <li>abcdef 2 -》 a.</li>
* <li>abcdef 1 -》 a</li>
* <li>abcdefgh 9 -》 abcdefgh</li>
* <li>abcdefgh 8 -》 abcdefgh</li>
* <li>abcdefgh 7 -》 ab...gh</li>
* <li>abcdefgh 6 -》 ab...h</li>
* <li>abcdefgh 5 -》 a...h</li>
* <li>abcdefgh 4 -》 a..h</li>
* <li>abcdefgh 3 -》 a.h</li>
* <li>abcdefgh 2 -》 a.</li>
* <li>abcdefgh 1 -》 a</li>
* <li>abcdefgh 0 -》 abcdefgh</li>
* <li>abcdefgh -1 -》 abcdefgh</li>
* </ul>
*
* @param str 字符串
@ -4228,14 +4234,17 @@ public class CharSequenceUtil {
case 2:
return str.charAt(0) + ".";
case 3:
return str.charAt(0) + "." + str.charAt(str.length() - 1);
return str.charAt(0) + "." + str.charAt(strLength - 1);
case 4:
return str.charAt(0) + ".." + str.charAt(strLength - 1);
}
final int w = maxLength / 2;
final int w2 = (maxLength - 3) / 2;
final int w1 = w2 + (maxLength - 3) % 2; // w2 或 w2 + 1
final String str2 = str.toString();
return format("{}...{}",
str2.substring(0, maxLength - w),
str2.substring(strLength - w + 3));
str2.substring(0, w1),
str2.substring(strLength - w2));
}
/**

16
hutool-core/src/test/java/cn/hutool/core/util/StrUtilTest.java
View File

@ -529,10 +529,18 @@ public class StrUtilTest {
@Test
public void briefTest() {
String str = RandomUtil.randomString(1000);
int maxLength = RandomUtil.randomInt(1000);
String brief = StrUtil.brief(str, maxLength);
Assert.assertEquals(brief.length(), maxLength);
// case: 1 至 str.length - 1
String str = RandomUtil.randomString(RandomUtil.randomInt(1, 100));
for (int maxLength = 1; maxLength < str.length(); maxLength++) {
String brief = StrUtil.brief(str, maxLength);
Assert.assertEquals(brief.length(), maxLength);
}
// case: 不会格式化的值
Assert.assertEquals(str, StrUtil.brief(str, 0));
Assert.assertEquals(str, StrUtil.brief(str, -1));
Assert.assertEquals(str, StrUtil.brief(str, str.length()));
Assert.assertEquals(str, StrUtil.brief(str, str.length() + 1));
}
@Test