Java 字符串转码工具类

谁践踏了优雅 2021-12-14 12:05 301阅读 0赞

StringConvertUtils.java

package javax.utils;
    
    /**
     * 字符串转码工具类
     * 
     * @author Logan
     * @createDate 2019-04-01
     * @version 1.0.0
     *
     */
    public class StringConvertUtils {
    
        /**
         * 转换字符串为16进制字符串
         * 
         * @param text 源字符串
         * @return 转义后的16进制字符串
         */
        public static String encode(String text) {
            if (null == text) {
                return null;
            }
    
            StringBuffer buf = new StringBuffer();
            byte[] bytes = text.getBytes();
            for (byte b : bytes) {
                buf.append(String.format("%02x", b));
            }
            return buf.toString();
        }
    
        /**
         * 解码转义的16进制字符串
         * 
         * @param encodeStr 转义的16进制字符串
         * @return 源字符串
         */
        public static String decode(String encodeStr) {
            if (null == encodeStr) {
                return null;
            }
    
            // 一个字节会转为两个16进制字符
            if (encodeStr.length() % 2 != 0) {
                throw new IllegalArgumentException("错误的编码字符串");
            }
    
            byte[] bytes = new byte[encodeStr.length() / 2];
            for (int i = 0; i < bytes.length; i++) {
                bytes[i] = (byte) Integer.parseInt(encodeStr.substring(i * 2, i * 2 + 2), 16);
            }
    
            return new String(bytes);
        }
    
        public static void main(String[] args) {
            String s = "A⊙♂()[] {}=BBbb=&&||";
            String encodeStr = encode(s);
            System.out.println(encodeStr);
            String decodeStr = decode(encodeStr);
            System.out.println(decodeStr);
        }
    
    }

转载于:https://www.cnblogs.com/jonban/p/10638292.html