脱敏工具类

import java.io.Serializable;

/**
 * 脱敏工具类
 * 脱敏规则：可显示字符
 * 姓名：前1
 * 电话：前3后4
 * 身份证：前6后3
 * 地址：省、市
 * 银行账号：后4
 */
public class DesensitizeUtils implements Serializable {

    public static final String desensitize(String value,String type){
        if(null == value || "".equals(value)){
            return value;
        }
        String res = "";
        if(Type.NAME.name().equals(type)){
            res = desensitizeName(value);
        }else if(Type.MOBILE.name().equals(type)){
            res = desensitizeMobile(value);
        }else if(Type.IDNO.name().equals(type)){
            res = desensitizeIdno(value);
        }else if(Type.BANKNO.name().equals(type)){
            res = desensitizeBankNo(value);
        }else{
            throw new RuntimeException("Unrecognized mask type!");
        }

        return res;
    }

    private static String desensitizeName(String value){
        return value.substring(0,1)+generateStar(value.length()-1);
    }
    private static String desensitizeMobile(String value){
        if(value.length()<11){
            throw new RuntimeException("Illegal Mobile Number.");
        }
        return value.substring(0,3)+generateStar(value.length()-7)+value.substring(value.length()-4);
    }
    private static String desensitizeIdno(String value) {
        if(value.length()<15){
            throw new RuntimeException("Illegal ID number");
        }
        return value.substring(0,6)+generateStar(value.length()-9)+value.substring(value.length()-3);
    }
    private static String desensitizeBankNo(String value){
        if(value.length()<4){
            throw new RuntimeException("Illegal bank account number");
        }
        return generateStar(value.length()-4)+value.substring(value.length()-4);
    }

    private static String generateStar(int cnt){
        StringBuilder sb = new StringBuilder();
        for(int i=0;i<cnt;i++){
            sb.append("*");
        }
        return sb.toString();
    }

    public enum Type{
        NAME,MOBILE,IDNO,BANKNO
    }

}