package com;

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

public class test {
  
  //個人信息打碼
  private static String getEncrypt(String number){
    //電話
    if (number != null && number.length() == 11) {
      return number.replaceAll("(\\d{3})\\d{4}(\\d{4})", "$1****$2");
    }
    
 
//身份證號碼
    if (number != null && number.length() == 18) {
      return number.replaceAll("(\\d{4})\\d{12}(\\w{2})","$1************$2");
    } else if(number != null && number.length() == 15){
      return number.replaceAll("(\\d{4})\\d{9}(\\w{2})","$1*********$2");
    }else{
      return
 
 number;
    }
  }
  
  private static String getEncryptName(String name){
    String regex = "[\\u4E00-\\u9FA5]{2,30}(?:·[\\u4E00-\\u9FA5]{2,5})*";
    Pattern p = Pattern.compile(regex);
    Matcher m = p.matcher(name);
    boolean isMatch = m.matches();
    StringBuilder sb = new StringBuilder();
    String names
 
="";
    if (isMatch) {//說明是中文姓名
      if (name.contains("·")) {
        String[] strNames = name.split("·");
        for (int i = 0; i < strNames.length-1; i++) {
          if (i!=strNames.length) {
            names = strNames[i].replaceAll("[\\u4e00-\\u9fa5]", "*");
          }
          sb.append(names).append("·");
        }
        return sb.append(strNames[strNames.length-1]).toString();
      } else {
        String[] strNames = name.split("");
        sb.append(strNames[1]);
        for (int i = 2; i < strNames.length; i++) {
          names = strNames[i].replaceAll("[\\u4e00-\\u9fa5]", "*");
          sb.append(names);
        }
        return sb.toString();
      }
    } else {//說明是英文
      if (name.contains(" ")) {
        String[] strNames = name.split(" ");
        for (int i = 0; i < strNames.length-1; i++) {
          if (i!=strNames.length) {
            names = strNames[i].replaceAll("^[A-Za-z]+$", "*");
          }
          sb.append(names).append(" ");
        }
        return sb.append(strNames[strNames.length-1]).toString();
      }
    }
    return name;
  }

  /**
   * @param args
   */
  public static void main(String[] args) {
    System.out.println(getEncrypt("411421995412541201"));
    System.out.println(getEncrypt("13595245120"));
    System.out.println(getEncryptName("張三"));
  }

}

結果:

個人信息打碼