关于地址栏传递中文参数的乱码的终极解决方案

乱码，乱码，头大，烦，话说设置Tomcat后可以解决，但有的时候不管用了，这时，我们可以考虑转码方式不直接传中文，在js里用escape转码，记得需要用两次，如：

var str=escape("这是中文参数");

str=escape(str);

xxx.do?name=str;

在后台通过一个类的方法再转回来：

Escape.unescape(request.getParameter("name"));

Escape类如下：

package com.laneasy.hy.util;/** * js编转码java实现类. *  * @author yangjinde */public class Escape {/** The Constant hex. */private final static String[] hex = { "00", "01", "02", "03", "04", "05","06", "07", "08", "09", "0A", "0B", "0C", "0D", "0E", "0F", "10","11", "12", "13", "14", "15", "16", "17", "18", "19", "1A", "1B","1C", "1D", "1E", "1F", "20", "21", "22", "23", "24", "25", "26","27", "28", "29", "2A", "2B", "2C", "2D", "2E", "2F", "30", "31","32", "33", "34", "35", "36", "37", "38", "39", "3A", "3B", "3C","3D", "3E", "3F", "40", "41", "42", "43", "44", "45", "46", "47","48", "49", "4A", "4B", "4C", "4D", "4E", "4F", "50", "51", "52","53", "54", "55", "56", "57", "58", "59", "5A", "5B", "5C", "5D","5E", "5F", "60", "61", "62", "63", "64", "65", "66", "67", "68","69", "6A", "6B", "6C", "6D", "6E", "6F", "70", "71", "72", "73","74", "75", "76", "77", "78", "79", "7A", "7B", "7C", "7D", "7E","7F", "80", "81", "82", "83", "84", "85", "86", "87", "88", "89","8A", "8B", "8C", "8D", "8E", "8F", "90", "91", "92", "93", "94","95", "96", "97", "98", "99", "9A", "9B", "9C", "9D", "9E", "9F","A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", "A8", "A9", "AA","AB", "AC", "AD", "AE", "AF", "B0", "B1", "B2", "B3", "B4", "B5","B6", "B7", "B8", "B9", "BA", "BB", "BC", "BD", "BE", "BF", "C0","C1", "C2", "C3", "C4", "C5", "C6", "C7", "C8", "C9", "CA", "CB","CC", "CD", "CE", "CF", "D0", "D1", "D2", "D3", "D4", "D5", "D6","D7", "D8", "D9", "DA", "DB", "DC", "DD", "DE", "DF", "E0", "E1","E2", "E3", "E4", "E5", "E6", "E7", "E8", "E9", "EA", "EB", "EC","ED", "EE", "EF", "F0", "F1", "F2", "F3", "F4", "F5", "F6", "F7","F8", "F9", "FA", "FB", "FC", "FD", "FE", "FF" };/** The Constant val. */private final static byte[] val = { 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x00, 0x01,0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F };/** * Escape. *  * @param s *            the s *  * @return the string *//** * 编码 *  * @param s * @return */public static String escape(String s) {if (s != null) {StringBuffer sbuf = new StringBuffer();int len = s.length();for (int i = 0; i < len; i++) {int ch = s.charAt(i);if ('A' <= ch && ch <= 'Z') {sbuf.append((char) ch);} else if ('a' <= ch && ch <= 'z') {sbuf.append((char) ch);} else if ('0' <= ch && ch <= '9') {sbuf.append((char) ch);} else if (ch == '-' || ch == '_' || ch == '.' || ch == '!'|| ch == '~' || ch == '*' || ch == '\'' || ch == '('|| ch == ')') {sbuf.append((char) ch);} else if (ch <= 0x007F) {sbuf.append('%');sbuf.append(hex[ch]);} else {sbuf.append('%');sbuf.append('u');sbuf.append(hex[(ch >>> 8)]);sbuf.append(hex[(0x00FF & ch)]);}}return sbuf.toString();}return null;}/** * Unescape. *  * @param s *            the s *  * @return the string *//** * 解码 说明：本方法保证 不论参数s是否经过escape()编码，均能得到正确的“解码”结果 *  * @param s * @return */public static String unescape(String s) {if (s != null) {StringBuffer sbuf = new StringBuffer();int i = 0;int len = s.length();while (i < len) {int ch = s.charAt(i);if ('A' <= ch && ch <= 'Z') {sbuf.append((char) ch);} else if ('a' <= ch && ch <= 'z') {sbuf.append((char) ch);} else if ('0' <= ch && ch <= '9') {sbuf.append((char) ch);} else if (ch == '-' || ch == '_' || ch == '.' || ch == '!'|| ch == '~' || ch == '*' || ch == '\'' || ch == '('|| ch == ')') {sbuf.append((char) ch);} else if (ch == '%') {int cint = 0;if ('u' != s.charAt(i + 1)) {cint = (cint << 4) | val[s.charAt(i + 1)];cint = (cint << 4) | val[s.charAt(i + 2)];i += 2;} else {cint = (cint << 4) | val[s.charAt(i + 2)];cint = (cint << 4) | val[s.charAt(i + 3)];cint = (cint << 4) | val[s.charAt(i + 4)];cint = (cint << 4) | val[s.charAt(i + 5)];i += 5;}sbuf.append((char) cint);} else {sbuf.append((char) ch);}i++;}return sbuf.toString();}return null;}}