java中文和unicode编码相互转换

r囧r小猫 2022-01-27 15:53 602阅读 0赞

import java.io.UnsupportedEncodingException;
    
    public class TestUnicode{
    
        public static void main(String[] args) throws UnsupportedEncodingException {
            String s = "简介";
            System.out.println(s+" --的unicode编码是："+gbEncoding(s));
            System.out.println(gbEncoding(s) + " --转换成中文是："+decodeUnicode(gbEncoding(s)));
            
            //System.out.println(gbEncoding(s) + " --转换成中文是："+decodeUnicode("\\u7b80\\u4ecb"));
        }
        
        /*
         * 中文转unicode编码
         */
        public static String gbEncoding(final String gbString) {
            char[] utfBytes = gbString.toCharArray();
            String unicodeBytes = "";
            for (int i = 0; i < utfBytes.length; i++) {
                String hexB = Integer.toHexString(utfBytes[i]);
                if (hexB.length() <= 2) {
                    hexB = "00" + hexB;
                }
                unicodeBytes = unicodeBytes + "\\u" + hexB;
            }
            return unicodeBytes;
        }
        /*
         * unicode编码转中文
         */
        public static String decodeUnicode(final String dataStr) {
            int start = 0;
            int end = 0;
            final StringBuffer buffer = new StringBuffer();
            while (start > -1) {
                end = dataStr.indexOf("\\u", start + 2);
                String charStr = "";
                if (end == -1) {
                    charStr = dataStr.substring(start + 2, dataStr.length());
                } else {
                    charStr = dataStr.substring(start + 2, end);
                }
                char letter = (char) Integer.parseInt(charStr, 16); // 16进制parse整形字符串。
                buffer.append(new Character(letter).toString());
                start = end;
            }
            return buffer.toString();
        }
    }

转载自：  
[https://www.cnblogs.com/boluoboluo/p/6504641.html][https_www.cnblogs.com_boluoboluo_p_6504641.html]

[https_www.cnblogs.com_boluoboluo_p_6504641.html]: https://www.cnblogs.com/boluoboluo/p/6504641.html