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增加字节长度验证，应对数据库字节长度与java串长度算法不一致的问题

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This commit is contained in:
hellozrh 2022-08-09 15:30:52 +08:00
parent b8977ea119
commit ad09bd41bb
2 changed files with 48 additions and 0 deletions
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30
hutool-core/src/main/java/cn/hutool/core/lang/Validator.java
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@ -3,6 +3,7 @@ package cn.hutool.core.lang;
import cn.hutool.core.date.DateUtil;
import cn.hutool.core.exceptions.ValidateException;
import cn.hutool.core.regex.PatternPool;
import cn.hutool.core.util.CharsetUtil;
import cn.hutool.core.util.CreditCodeUtil;
import cn.hutool.core.math.NumberUtil;
import cn.hutool.core.util.ObjUtil;
@ -11,6 +12,7 @@ import cn.hutool.core.text.StrUtil;
import cn.hutool.core.util.IdcardUtil;
import java.net.MalformedURLException;
import java.nio.charset.Charset;
import java.util.Date;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
@ -1198,4 +1200,32 @@ public class Validator {
throw new ValidateException(errorMsg);
}
}
/**
* 验证字符串的字节长度是否符合要求，默认采用"utf-8"编码
*
* @param str 字符串
* @param min 最小长度
* @param max 最大长度
* @param errorMsg 错误消息
*/
public static void validateByteLength(CharSequence str, int min, int max, String errorMsg) {
validateByteLength(str, min, max, CharsetUtil.UTF_8, errorMsg);
}
/**
* 验证字符串的字节长度是否符合要求
*
* @param str 字符串
* @param min 最小长度
* @param max 最大长度
* @param charset 字符编码
* @param errorMsg 错误消息
*/
public static void validateByteLength(CharSequence str, int min, int max, Charset charset, String errorMsg) {
int len = StrUtil.byteLength(str, charset);
if (len < min || len > max) {
throw new ValidateException(errorMsg);
}
}
}

18
hutool-core/src/test/java/cn/hutool/core/lang/ValidatorTest.java
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@ -4,6 +4,8 @@ import cn.hutool.core.date.DateUtil;
import cn.hutool.core.exceptions.ValidateException;
import cn.hutool.core.lang.id.IdUtil;
import cn.hutool.core.regex.PatternPool;
import cn.hutool.core.text.StrUtil;
import cn.hutool.core.util.CharsetUtil;
import org.junit.Assert;
import org.junit.Test;
@ -273,6 +275,22 @@ public class ValidatorTest {
Validator.validateLength(s1, 6, 8, "请输入6到8位的字符！"));
}
@Test
public void validateByteLengthTest() {
String s1 = "abc";
int len1 = StrUtil.byteLength(s1, CharsetUtil.UTF_8);
Assert.assertEquals(len1, 3);
String s2 = "我ab";
int len2 = StrUtil.byteLength(s2, CharsetUtil.UTF_8);
Assert.assertEquals(len2, 5);
//一个汉字在utf-8编码下，占3个字节。
Assert.assertThrows(ValidateException.class, ()->
Validator.validateByteLength(s2, 1, 3, "您输入的字符串长度超出限制！")
);
}
@Test
public void isChineseNameTest(){
Assert.assertTrue(Validator.isChineseName("阿卜杜尼亚孜·毛力尼亚孜"));