package com.xzx.gc.common.utils;
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import cn.hutool.core.codec.Base64;
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import cn.hutool.core.convert.Convert;
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import cn.hutool.core.text.StrBuilder;
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import cn.hutool.core.util.NumberUtil;
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import cn.hutool.core.util.StrUtil;
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import java.math.BigDecimal;
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import java.util.regex.Pattern;
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/**
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* @Description:
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* @Date: 2018/7/17
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* @Author: wcf
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*/
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public class StringUtils extends org.apache.commons.lang3.StringUtils{
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/**
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* 是否是base64编码
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* @param str
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* @return
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*/
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public static boolean isBase64(String str) {
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if(StrUtil.isBlank(str))return false;
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if(str.length()==4&&NumberUtil.isNumber(str))return false;
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String base64Pattern = "^([A-Za-z0-9+/]{4})*([A-Za-z0-9+/]{4}|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)$";
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return Pattern.matches(base64Pattern, str);
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}
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/**
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* 是否包含中文
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* @param strName
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* @param firstLetter 是否只查询第一个字符
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* @return
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*/
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public static boolean isContainChinese(String strName,boolean firstLetter) {
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char[] ch = strName.toCharArray();
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for (int i = 0; i < ch.length; i++) {
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char c = ch[i];
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if(firstLetter){
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if (isChinese(c)) {
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return true;
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}else {
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return false;
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}
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}else {
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if (isChinese(c)) {
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return true;
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}
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}
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}
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return false;
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}
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// 根据Unicode编码完美的判断中文汉字和符号
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private static boolean isChinese(char c) {
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Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
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if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS
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|| ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
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|| ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A
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|| ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B
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|| ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION
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|| ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS
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|| ub == Character.UnicodeBlock.GENERAL_PUNCTUATION) {
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return true;
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}
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return false;
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}
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/**
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* 将数字转换为万的单位
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* @param number
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* @return
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*/
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public static String intChange2Str(int number) {
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String str = "";
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if (number <= 0) {
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str = "0";
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} else if (number < 10000) {
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str = number+"";
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} else {
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double d = (double) number;
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double num = d / 10000;//1.将数字转换成以万为单位的数字
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BigDecimal b = new BigDecimal(num);
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double f1 = b.setScale(1,BigDecimal.ROUND_HALF_UP).doubleValue();//2.转换后的数字四舍五入保留小数点后一位;
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str = f1 + "万";
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}
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return str;
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}
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/**
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* 截取掉最后一个字符串
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* @param strBuilder
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* @param charcode
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* @return
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*/
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public static String removeLast(StrBuilder strBuilder, String charcode){
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if(strBuilder.length()>0){
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String s = strBuilder.toString();
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String s1 = StrUtil.removeSuffix(s, charcode);
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return s1;
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}
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return strBuilder.toString();
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}
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/**
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* 净化字符
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* @param str
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* @return
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*/
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public static String cleanStr(String str){
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if(StrUtil.isNotBlank(str)){
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str=str .replaceAll("\\s*", "");
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str=str.replaceAll("/n","");
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}
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return str;
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}
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/**
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* 解码字符串
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* @param str
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* @return
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*/
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public static String decode(String str){
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if(StrUtil.isNotBlank(str)&&isBase64(str)){
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return Base64.decodeStr(str);
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}
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return str;
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}
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public static String encode(String str){
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if(StrUtil.isNotBlank(str)){
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return Base64.encode(str);
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}
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return str;
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}
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public static String addZero(int num){
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if(num>0&&num<10&&!Convert.toStr(num).startsWith("0")){
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return "0"+num;
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}
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return num+"";
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}
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}
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