本文实例为大家分享了Java实现中文字符串与unicode互转的具体代码，供大家参考，具体内容如下

原理利用了java实现js的escape以及unescape函数。

/** * 中文字符串和unicode互转工具类 <br> * * @author hkb <br> */public class UnicodeConvertUtils { /** * 实现js的escape函数 * * @param input * 待传入字符串 * @return */ public static String escape(String input) { int len = input.length(); int i; char j; StringBuffer result = new StringBuffer(); result.ensureCapacity(len * 6); for (i = 0; i < len; i++) { j = input.charAt(i); if (Character.isDigit(j) || Character.isLowerCase(j) || Character.isUpperCase(j)) { result.append(j); } else if (j < 256) { result.append("%"); if (j < 16) { result.append("0"); } result.append(Integer.toString(j, 16)); } else { result.append("%u"); result.append(Integer.toString(j, 16)); } } return result.toString(); } /** * 实现js的unescape函数 * * @param input * 待传入字符串 * @return */ public static String unescape(String input) { int len = input.length(); StringBuffer result = new StringBuffer(); result.ensureCapacity(len); int lastPos = 0, pos = 0; char ch; while (lastPos < len) { pos = input.indexOf("%", lastPos); if (pos == lastPos) { if (input.charAt(pos + 1) == 'u') { ch = (char) Integer.parseInt(input.substring(pos + 2, pos + 6), 16); result.append(ch); lastPos = pos + 6; } else { ch = (char) Integer.parseInt(input.substring(pos + 1, pos + 3), 16); result.append(ch); lastPos = pos + 3; } } else { if (pos == -1) { result.append(input.substring(lastPos)); lastPos = len; } else { result.append(input.substring(lastPos, pos)); lastPos = pos; } } } return result.toString(); } /** * unicode转中文 * * @param input * 待传入字符串 * @return */ public static String toGb2312(String input) { input = input.trim().replaceAll("(?i)\\\\u", "%u"); return unescape(input); } /** * 中文字符串转unicode * * @param input * 待传入字符串 * @return */ public static String toUnicode(String input) { input = input.trim(); String output = escape(input).toLowerCase().replace("%u", "\\u"); return output.replaceAll("(?i)%7b", "{").replaceAll("(?i)%7d", "}").replaceAll("(?i)%3a", ":") .replaceAll("(?i)%2c", ",").replaceAll("(?i)%27", "'").replaceAll("(?i)%22", "\"") .replaceAll("(?i)%5b", "[").replaceAll("(?i)%5d", "]").replaceAll("(?i)%3D", "=") .replaceAll("(?i)%20", " ").replaceAll("(?i)%3E", ">").replaceAll("(?i)%3C", "<") .replaceAll("(?i)%3F", "?").replaceAll("(?i)%5c", "\\"); } /** * 测试 * * @param args */ public static void main(String[] args) { System.out.println(toUnicode("你好")); System.out.println(toGb2312("\u4f60\u597d")); // 等同于上面 System.out.println(toGb2312("\\u4f60\\u597d")); }}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。