中国語をUnicodeコードに変換

.propertiesファイルに中国語を配置し、文字化けを防ぐためにUnicode符号化を使用する必要がある.

/**
 * @author ：maph
 * @version ：
 * @date ：Created in 2020-04-28 11:06
 * @description：    Unicode  
 * @modified By：
 */
public class FontUtil {
     

    public static void main(String[] args) {
     
        System.out.println(chinaToUnicode("   ！"));
        System.out.println(decodeUnicode("\u672a\u767b\u9646\uff01"));
        System.out.println(chinaToUnicode("   "));
    }

    /**
     *      Unicode 
     *
     * @param str
     * @return
     */
    public static String chinaToUnicode(String str) {
     
        String result = "";
        for (int i = 0; i < str.length(); i++) {
     
            int chr1 = (char) str.charAt(i);
            if (chr1 >= 19968 && chr1 <= 171941) {
     //      \u4e00-\u9fa5 (  )
                result += "\\u" + Integer.toHexString(chr1);
            } else {
     
                result += str.charAt(i);
            }
        }
        return result;
    }

    /**
     *          
     *
     * @param c
     * @return
     */
    public static boolean isChinese(char c) {
     
        Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
        if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS
                || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
                || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A
                || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION
                || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION
                || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS) {
     
            return true;
        }
        return false;
    }


    //Unicode   
    public static String decodeUnicode(final String unicode) {
     
        StringBuffer string = new StringBuffer();

        String[] hex = unicode.split("\\\\u");

        for (int i = 0; i < hex.length; i++) {
     

            try {
     
                //      \u4e00-\u9fa5 (  )
                if(hex[i].length()>=4){
     //    ，       
                    String chinese = hex[i].substring(0, 4);
                    try {
     
                        int chr = Integer.parseInt(chinese, 16);
                        boolean isChinese = isChinese((char) chr);
                        //    ，            
                        if (isChinese){
     //      
                            //    string
                            string.append((char) chr);
                            //           
                            String behindString = hex[i].substring(4);
                            string.append(behindString);
                        }else {
     
                            string.append(hex[i]);
                        }
                    } catch (NumberFormatException e1) {
     
                        string.append(hex[i]);
                    }

                }else{
     
                    string.append(hex[i]);
                }
            } catch (NumberFormatException e) {
     
                string.append(hex[i]);
            }
        }

        return string.toString();
    }

}