一、前言
本文章关于中文编码进行掩码Escape处理代码实现示例 - 以ASCII字符对照映射16进制进行掩码加密、明文解密处理，详情参见代码示例。
二、代码示例
package com.xwood.util;@b@@b@public class Escape {@b@ @b@ private final static String[] hex = { "00", "01", "02", "03", "04", "05",@b@ "06", "07", "08", "09", "0A", "0B", "0C", "0D", "0E", "0F", "10",@b@ "11", "12", "13", "14", "15", "16", "17", "18", "19", "1A", "1B",@b@ "1C", "1D", "1E", "1F", "20", "21", "22", "23", "24", "25", "26",@b@ "27", "28", "29", "2A", "2B", "2C", "2D", "2E", "2F", "30", "31",@b@ "32", "33", "34", "35", "36", "37", "38", "39", "3A", "3B", "3C",@b@ "3D", "3E", "3F", "40", "41", "42", "43", "44", "45", "46", "47",@b@ "48", "49", "4A", "4B", "4C", "4D", "4E", "4F", "50", "51", "52",@b@ "53", "54", "55", "56", "57", "58", "59", "5A", "5B", "5C", "5D",@b@ "5E", "5F", "60", "61", "62", "63", "64", "65", "66", "67", "68",@b@ "69", "6A", "6B", "6C", "6D", "6E", "6F", "70", "71", "72", "73",@b@ "74", "75", "76", "77", "78", "79", "7A", "7B", "7C", "7D", "7E",@b@ "7F", "80", "81", "82", "83", "84", "85", "86", "87", "88", "89",@b@ "8A", "8B", "8C", "8D", "8E", "8F", "90", "91", "92", "93", "94",@b@ "95", "96", "97", "98", "99", "9A", "9B", "9C", "9D", "9E", "9F",@b@ "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", "A8", "A9", "AA",@b@ "AB", "AC", "AD", "AE", "AF", "B0", "B1", "B2", "B3", "B4", "B5",@b@ "B6", "B7", "B8", "B9", "BA", "BB", "BC", "BD", "BE", "BF", "C0",@b@ "C1", "C2", "C3", "C4", "C5", "C6", "C7", "C8", "C9", "CA", "CB",@b@ "CC", "CD", "CE", "CF", "D0", "D1", "D2", "D3", "D4", "D5", "D6",@b@ "D7", "D8", "D9", "DA", "DB", "DC", "DD", "DE", "DF", "E0", "E1",@b@ "E2", "E3", "E4", "E5", "E6", "E7", "E8", "E9", "EA", "EB", "EC",@b@ "ED", "EE", "EF", "F0", "F1", "F2", "F3", "F4", "F5", "F6", "F7",@b@ "F8", "F9", "FA", "FB", "FC", "FD", "FE", "FF" };@b@@b@ private final static byte[] val = { 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x00, 0x01,@b@ 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,@b@ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F };@b@@b@ /** @b@ * 掩码加密处理 @b@ * @param s @b@ * @return @b@ */@b@ public static String escape(String s) {@b@ StringBuffer sbuf = new StringBuffer();@b@ int len = s.length();@b@ for (int i = 0; i < len; i++) {@b@ int ch = s.charAt(i);@b@ if ('A' <= ch && ch <= 'Z') {@b@ sbuf.append((char) ch);@b@ } else if ('a' <= ch && ch <= 'z') {@b@ sbuf.append((char) ch);@b@ } else if ('0' <= ch && ch <= '9') {@b@ sbuf.append((char) ch);@b@ } else if (ch == '-' || ch == '_' || ch == '.' || ch == '!'@b@ || ch == '~' || ch == '*' || ch == '\'' || ch == '('@b@ || ch == ')') {@b@ sbuf.append((char) ch);@b@ } else if (ch <= 0x007F) {@b@ sbuf.append('%');@b@ sbuf.append(hex[ch]);@b@ } else {@b@ sbuf.append('%');@b@ sbuf.append('u');@b@ sbuf.append(hex[(ch >>> 8)]);@b@ sbuf.append(hex[(0x00FF & ch)]);@b@ }@b@ }@b@ return sbuf.toString();@b@ }@b@@b@ /** @b@ * 解码解密处理 @b@ * @param s @b@ * @return @b@ */@b@ public static String unescape(String s) {@b@ StringBuffer sbuf = new StringBuffer();@b@ int i = 0;@b@ int len = s.length();@b@ while (i < len) {@b@ int ch = s.charAt(i);@b@ if ('A' <= ch && ch <= 'Z') {@b@ sbuf.append((char) ch);@b@ } else if ('a' <= ch && ch <= 'z') {@b@ sbuf.append((char) ch);@b@ } else if ('0' <= ch && ch <= '9') {@b@ sbuf.append((char) ch);@b@ } else if (ch == '-' || ch == '_' || ch == '.' || ch == '!'@b@ || ch == '~' || ch == '*' || ch == '\'' || ch == '('@b@ || ch == ')') {@b@ sbuf.append((char) ch);@b@ } else if (ch == '%') {@b@ int cint = 0;@b@ if ('u' != s.charAt(i + 1)) {@b@ cint = (cint << 4) | val[s.charAt(i + 1)];@b@ cint = (cint << 4) | val[s.charAt(i + 2)];@b@ i += 2;@b@ } else {@b@ cint = (cint << 4) | val[s.charAt(i + 2)];@b@ cint = (cint << 4) | val[s.charAt(i + 3)];@b@ cint = (cint << 4) | val[s.charAt(i + 4)];@b@ cint = (cint << 4) | val[s.charAt(i + 5)];@b@ i += 5;@b@ }@b@ sbuf.append((char) cint);@b@ } else {@b@ sbuf.append((char) ch);@b@ }@b@ i++;@b@ }@b@ return sbuf.toString();@b@ }@b@@b@ public static void main(String[] args) {@b@ String stest = "打调度啊上了飞机啊沙发了煞风景啊1234 abcd[]()<+>,.~\"";@b@ System.out.println(stest);@b@ System.out.println(escape(stest));@b@ System.out.println(unescape(escape(stest)));@b@ }@b@}控制台结果
打调度啊上了飞机啊沙发了煞风景啊1234 abcd[]()<+>,.~"@b@%u6253%u8C03%u5EA6%u554A%u4E0A%u4E86%u98DE%u673A%u554A%u6C99%u53D1%u4E86%u715E%u98CE%u666F%u554A1234%20abcd%5B%5D()%3C%2B%3E%2C.~%22@b@打调度啊上了飞机啊沙发了煞风景啊1234 abcd[]()<+>,.~"