public static String mailFormatInfo(String mail){        try {            if(StringUtil.isEmpty(mail)){                return mail;            }            //1，去除空格，特殊字符            mail = mail.trim();            mail = removeCR(mail);            mail = removeSpace(mail);            mail = mail.replace("\u00A0", "");            //2，循环去符号            if(mail.contains(MAIL_SPIT)){                //替换@符号之前的内容                String preFix = mail.substring(0, mail.indexOf(MAIL_SPIT));                if(!org.springframework.util.StringUtils.isEmpty(preFix)){                    int preLength = 0;                    int sub = 0;                    do{                        //替换之前的长度                        preLength = preFix.length();                        //替换符号                        String first = preFix.substring(0,1);                        first = first.replaceAll("[\\pP\\p{Punct}]","");                        preFix = first + preFix.substring(1);                        //替换长度                        sub = preLength - preFix.length();                    }while (sub > 0 && preFix.length() > 0);                }                //替换@符号之后的内容                String lastFix = mail.substring(mail.indexOf(MAIL_SPIT) + 1);                if(!org.springframework.util.StringUtils.isEmpty(lastFix)){                    int preLength = 0;                    int sub = 0;                    do{                        //替换之前长度                        preLength = lastFix.length();                        //替换符号                        String last = lastFix.substring(lastFix.length() - 1, lastFix.length());                        last = last.replaceAll("[\\pP\\p{Punct}]","");                        lastFix = lastFix.substring(0, lastFix.length() -1) + last;                        //替换长度                        sub = preLength - lastFix.length();                    }while (sub > 0 && lastFix.length() > 0);                }                //组装最后替换结果                mail = preFix + MAIL_SPIT + lastFix;            }            //3，去除空格，特殊字符            mail = mail.trim();            mail = removeCR(mail);            mail = removeSpace(mail);        } catch (Exception e) {            e.printStackTrace();        }        return mail;    }