http://localhost:9080/questionnaireSurvey/categoryShowByTelecommunications.view?
caseId=9566403&orderId=94331187&createTime=2011-10-17 17:13:10</br>username<input type="text">password<input type="password"><script>alert(110)</script>

    public static void main(String[] args) {
        String str = "武汉市u洪j。山区 HuaZhos无可奈jhkk何花落去 大幅度,,nojgy College j武j昌jjjjjj分校jj。jkl";
        URLEncoder.encode(addressChinese,"utf8"); //汉字编码
        int byteLength = length(str);
        char[] c = str.toCharArray();
        int charslength = getCharsLength(c, 12);
        System.out.println("getcharlength:" + charslength + "|charat" + str.charAt(charslength - 1));
        int sublength = 50;
        int subbegin = byteLength - sublength;
        System.out.println("source:" + str + "|byteLength:" + byteLength + "|lenth:" + str.length() + "|subbegin:" + subbegin + "|sublength:" + sublength);
        String substr2 = substring(str, subbegin, sublength);
        System.out.println("------" + substr2 + "--------" + length(substr2));
    }

    public static String trims(String s) {
        if (s == null) {
            return "";
        } else {
            String t = s.replaceAll("^([\\s　])+|([\\s　])+$", "");
            return t;
        }
    }

    public static Boolean isBlank(String s) {
        if (s == null || trims(s).equals("")) {
            return true;
        } else {
            return false;
        }
    }

    public static boolean isNumeric(String str) {
        Pattern pattern = Pattern.compile("[0-9]+");
        return pattern.matcher(str).matches();
    }

    public static int length(String s) {
		if (str != null) {
			return str.getBytes().length;
		}
		return 0;
    }

    public static String substring(String str, int srcPos, int specialCharsLength) {
        if (str == null || "".equals(str) || specialCharsLength < 1) {
            return "";
        }
        if (srcPos < 0) {
            srcPos = 0;
        }
        if (specialCharsLength <= 0) {
            return "";
        }
        char[] chars = str.toCharArray();
        if (srcPos > chars.length) {
            return "";
        }
        int begin = getCharsLength(chars, srcPos);//todo:add
        str = str.substring(begin);
        chars = str.toCharArray();

        int charsLength = getCharsLength(chars, specialCharsLength);
        return new String(chars, 0, charsLength);
    }

    private static int getCharsLength(char[] chars, int specialCharsLength) {
        int count = 0;
        int normalCharsLength = 0;
        for (int i = 0; i < chars.length; i++) {
            int specialCharLength = getSpecialCharLength(chars[i]);
            if (count <= specialCharsLength - specialCharLength) {
                count += specialCharLength;
                normalCharsLength++;
            } else {
                break;
            }
        }
        return normalCharsLength;
    }

    private static int getSpecialCharLength(char c) {
        if (isLetter(c)) {
            return 1;
        } else {
            return 2;
        }
    }

    public static boolean isLetter(char c) {
        int k = 0x80;
        return c / k == 0 ? true : false;
    }

//unicode编码解码
        String t= UnicodeUtil.toUnicode("我",true);
         String s= new UnicodeUtil().fromUnicode("\\u6211".toCharArray(),0,"\\u6211".length()-1,"".toCharArray()) ;

    public static String formatUrl(String url){
        if(url!=null){
            return url.replaceAll("\"","%22").replaceAll("\\{","%7B").replaceAll("}","%7D").replaceAll("\\[","%5B").replaceAll("]","%5D");
        }
        return "";
    }