java 中文及特殊字符校验
CreateTime--2017年8月25日16:54:50
Author:Marydon
一、参考链接
二、具体实现
1.关于Character.UnicodeBlock的介绍
CJK的意思是“Chinese,Japanese,Korea”的简写 ,实际上就是指中日韩三国的象形文字的Unicode编码
Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS : 4E00-9FBF:Unicode 编码为 U+4E00~U+9FFF 的 CJK 统一文字
Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS :F900-FAFF:CJK 兼容象形文字
Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A :3400-4DBF:CJK 统一表意符号扩展 A
Character.UnicodeBlock.GENERAL_PUNCTUATION :2000-206F:常用标点
Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION :3000-303F:CJK 符号和标点
Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS :FF00-FFEF:半角及全角形式
2.封装
/**
* 校验一个字符是否是汉字
*
* @param c
* 被校验的字符
* @return true代表是汉字
*/
public static boolean isChineseChar(char c) {
try {
return String.valueOf(c).getBytes("UTF-8").length > 1;
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
return false;
}
}
/**
* 验证字符串内容是否包含下列非法字符
* `~!#%^&*=+\\|{};:'\",<>/?○●★☆☉♀♂※¤╬の〆
*
* @param content
* 字符串内容
* @return 't'代表不包含非法字符,otherwise代表包含非法字符。
*/
public static char validateLegalString(String content) {
String illegal = "`~!#%^&*=+\\|{};:'\",<>/?○●★☆☉♀♂※¤╬の〆";
char isLegalChar = 't';
L1: for (int i = 0; i < content.length(); i++) {
for (int j = 0; j < illegal.length(); j++) {
if (content.charAt(i) == illegal.charAt(j)) {
isLegalChar = content.charAt(i);
break L1;
}
}
}
return isLegalChar;
}
/**
* 验证是否是汉字或者0-9、a-z、A-Z
*
* @param c
* 被验证的char
* @return true代表符合条件
*/
public static boolean isRightChar(char c) {
return isChinese(c) || isWord(c);
}
/**
* 校验某个字符是否是a-z、A-Z、_、0-9
*
* @param c
* 被校验的字符
* @return true代表符合条件
*/
public static boolean isWord(char c) {
String regEx = "[\\w]";
Pattern p = Pattern.compile(regEx);
Matcher m = p.matcher("" + c);
return m.matches();
}
/**
* 判定输入的是否是汉字
*
* @param c
* 被校验的字符
* @return true代表是汉字
*/
public static boolean isChinese(char c) {
Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS
|| ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
|| ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A
|| ub == Character.UnicodeBlock.GENERAL_PUNCTUATION
|| ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION
|| ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS) {
return true;
}
return false;
}
/**
* 校验String是否全是中文
*
* @param name
* 被校验的字符串
* @return true代表全是汉字
*/
public static boolean checkNameChese(String name) {
boolean res = true;
char[] cTemp = name.toCharArray();
for (int i = 0; i < name.length(); i++) {
if (!isChinese(cTemp[i])) {
res = false;
break;
}
}
return res;
}