程式碼非常實用,這裡就不錯廢話,直接奉上
主要功能是實作判斷字串是否包含漢字並且替換成ASCLL
private static String regEx = "[//u4e00-//u9fa5]"; /** * 判斷字串是否包含漢字並且替換成ASCLL * * @param str_para * @return str_result */ private static String isChinese_Replace( String str_res { Pattern p = Pattern.compile( regEx ); String str_result = str_para; String str_0 = ""; String str_1 = ""; String str_data[] = null; String str_return_reslut = ""; if ( str_result != null && str_result.trim().length() > 0 . { str_data = str_result.split( "" ); for ( int i = 0; i < str_data.length; i++ ) { Matcher m = p.matcher( str_data[i] ); /* Ld(str_data[i]); */ int count = 0; if ( m.find () ) { count++; str_result = m.group( 0 ); byte[] b = str_result.getBytes( "GBK" ); str_0 = Integer.toHexString( b[0] ); str_1 = Integer.toHexString( b[1] ); str_return_reslut = str_return_reslut + "/" + conver10( str_0 ) + conver10(str. ; } else { str_return_reslut = str_return_reslut + str_data[i]; } } } catch ( NumberFormatException e ) { e.printStackTrace(); } catch ( UnsupportedEncodingException e ) { e.printStackTrace(); } } else { return(str_return_reslut); } return(lut); } /* 字串轉換十進位*/ public static int conver10( String str_0 ) { return(Integer.parseInt( str_0.substring( str_0.length() - 2, str_0.length() ), 16 ) ); }
我們來看個稍微簡單的程式碼,一些需求不高的地方可以用到
import java.util.regex.Matcher;import java.util.regex.Pattern;public class demo {static String regEx = "[/u4e00-/u9fa5]";static Pattern pat = Pattern.compile(regEx);public static vfa5]";static Pattern pat = Pattern.compile(regEx);public static void main(String[] args) {String input = "Hell world!";System.out.println(isContainsChinese(input));input = "hello world";System.out.println(isContainsChinese(input));} public static boolean isContainsChinese(String str){Matcher matcher = pat. matcher(str);boolean flg = false;if (matcher.find()) {flg = true;}return flg;}
最後我們附上各種字元的unicode編碼的範圍:
* 漢字:[0x4e00,0x9fa5](或十進位[19968,40869])
* 數字:[0x30,0x39](或十進位[48, 57])
*小寫字母:[0x61,0x7a](或十進位[97, 122])
* 大寫字母:[0x41,0x5a](或十進位[65, 90])