native与ascii互转
package org.edujks.schoolapp.schoolbasedresearch.schoolsubject.action; public class DecodeUtil { /** * @declare native与ascii码互转 * @param args * @author Lilin */ public static void main(String[] args) { // TODO Auto-generated method stub String a = chinaToUnicode("飞机f发多少adsfadsfadfad"); System.out.println(a); System.out.println(decodeUnicode(a)); } /** * 把中文转成Unicode码 * * @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) {// 汉字范围 \u4e00-\u9fa5 (中文) result += "\\u" + Integer.toHexString(chr1); } else { result += str.charAt(i); } } return result; } /** * 判断是否为中文字符 * * @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; } /*** * 转码 * * @param theString * @return * * @time 2012-6-13 下午5:54:34 TODO */ public static String decodeUnicode(String theString) { char aChar; int len = theString.length(); StringBuffer outBuffer = new StringBuffer(len); for (int x = 0; x < len;) { aChar = theString.charAt(x++); if (aChar == '\\') { aChar = theString.charAt(x++); if (aChar == 'u') { int value = 0; for (int i = 0; i < 4; i++) { aChar = theString.charAt(x++); switch (aChar) { case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': value = (value << 4) + aChar - '0'; break; case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': value = (value << 4) + 10 + aChar - 'a'; break; case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': value = (value << 4) + 10 + aChar - 'A'; break; default: throw new IllegalArgumentException( "Malformed \\uxxxx encoding."); } } outBuffer.append((char) value); } else { if (aChar == 't') aChar = '\t'; else if (aChar == 'r') aChar = '\r'; else if (aChar == 'n') aChar = '\n'; else if (aChar == 'f') aChar = '\f'; outBuffer.append(aChar); } } else outBuffer.append(aChar); } return outBuffer.toString(); } }