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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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27
hutool-core/src/main/java/cn/hutool/core/text/CharSequenceUtil.java
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@ -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));
}
/**

12
hutool-core/src/test/java/cn/hutool/core/util/StrUtilTest.java
View File

@ -529,12 +529,20 @@ public class StrUtilTest {
@Test
public void briefTest() {
String str = RandomUtil.randomString(1000);
int maxLength = RandomUtil.randomInt(1000);
// 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
public void briefTest2() {
String str = "123";