Javaemoji持久化mysql过程详解

/**
 * @Author: gaoshang
 * @Description:
 * @Date: 2019/7/19
 */
public class EmojiUtil {

 /**
  * 将文本中的表情转为十六进制
  * 

  *
  * @param input
  * @return
  */
 public static String parseFromAliases(String input) {
  if (input == null) {
   return input;
  }

  return stringToUnicode(input);
 }

 /**
  * 将文本中的十六进制转为表情
  * 

  *
  * @param input
  * @return
  */
 public static String parseToAliases(String input) {
  if (input == null) {
   return input;
  }

  return unicodeToString(input);
 }

 /**
  * 字符串转unicode
  *
  * @param str
  * @return
  */
 public static String stringToUnicode(String str) {
  StringBuilder sb = new StringBuilder();
  StringBuilder cacheSB = new StringBuilder();
  char[] c = str.toCharArray();
  for (int i = 0; i  0) {
     sb.append("\\u").append(cacheSB);
     cacheSB.delete(0, cacheSB.length());
    }

    sb.append("\\u").append("[").append(Integer.toHexString(c[i])).append("]");
   } else {
    if (c[i] == '[' || c[i] == '\\' || c[i] == ']') {
     if (cacheSB.length() > 0) {
      sb.append("\\u").append(cacheSB);
      cacheSB.delete(0, cacheSB.length());
     }
     sb.append("\\u").append(c[i]);
    } else {
     cacheSB.append(c[i]);
    }
   }
  }
  if (cacheSB.length() > 0) {
   if (sb.length() > 0) {
    sb.append("\\u");
   }
   sb.append(cacheSB);
  }
  return sb.toString();
 }

 /**
  * unicode转字符串
  *
  * @param unicode
  * @return
  */
 public static String unicodeToString(String unicode) {
  StringBuilder sb = new StringBuilder();
  String[] hex = unicode.split("\\\\u");
  for (int i = 0; i = 0x20) && (codePoint <= 0xD7FF))
    || ((codePoint >= 0xE000) && (codePoint <= 0xFFFD))
    || ((codePoint >= 0x10000) && (codePoint <= 0x10FFFF));
 }

}