Java项目实战中文转换类

来源：互联网发布：plc的编程语言有哪些编辑：程序博客网时间：2024/05/21 01:57

package com.utils;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class ChineseChar {

   public static String regEx = "[\\u4e00-\\u9fa5]";

   public static String getChinese(String str) {
       String chineseStr="";

       Pattern p = Pattern.compile(regEx);
       Matcher m = p.matcher(str);
       while (m.find()) {
           chineseStr+=m.group(0);
       }

       return chineseStr;
   }

   public static boolean checkChinese(String str) {

       boolean isChinese=false;

       if (str.getBytes().length == str.length()) {
           ;
       } else {
           isChinese=true;
       }


       return isChinese;

   }

   public static boolean checkAllChinese(String str) {

       boolean chFlag=true;
       for (int i = 0; i < str.length(); i++) {
           char oneChar = str.charAt(i);
           if ((oneChar >= '\u4e00' && oneChar <= '\u9fa5') || (oneChar >= '\uf900' && oneChar <= '\ufa2d')){
               ;
           }else{
               chFlag=false;
               break;
           }
       }

       return chFlag;
   }

   public static boolean checkNoChinese(String str) {

       boolean chFlag=true;
       for (int i = 0; i < str.length(); i++) {
           char oneChar = str.charAt(i);
           if ((oneChar >= '\u4e00' && oneChar <= '\u9fa5') || (oneChar >= '\uf900' && oneChar <= '\ufa2d')){
               chFlag=false;
               break;
           }else{
               ;
           }
       }

       return chFlag;
   }

   public static void main(String[] args) {
       // TODO Auto-generated method stub
       String str1 = "zhong guo";
       String str2 = "dfdf中国。，,";
       String str3 = "中国";
       ChineseChar ht1 = new ChineseChar();
       System.out.println(ht1.checkChinese(str1));
       System.out.println(ht1.checkChinese(str2));
       System.out.println(ht1.getChinese(str2));
       System.out.println(ht1.checkAllChinese(str2));
       System.out.println(ht1.checkAllChinese(str3));
       System.out.println(ht1.checkNoChinese(str3));

   }
}