js加密参数传给后台,后台解密base64
前台js
// base64加密开始 var keyStr = "ABCDEFGHIJKLMNOP" + "QRSTUVWXYZabcdef" + "ghijklmnopqrstuv" + "wxyz0123456789+/" + "="; function encode64(input) { var output = ""; var chr1, chr2, chr3 = ""; var enc1, enc2, enc3, enc4 = ""; var i = 0; do { chr1 = input.charCodeAt(i++); chr2 = input.charCodeAt(i++); chr3 = input.charCodeAt(i++); enc1 = chr1 >> 2; enc2 = ((chr1 & 3) << 4) | (chr2 >> 4); enc3 = ((chr2 & 15) << 2) | (chr3 >> 6); enc4 = chr3 & 63; if (isNaN(chr2)) { enc3 = enc4 = 64; } else if (isNaN(chr3)) { enc4 = 64; } output = output + keyStr.charAt(enc1) + keyStr.charAt(enc2) + keyStr.charAt(enc3) + keyStr.charAt(enc4); chr1 = chr2 = chr3 = ""; enc1 = enc2 = enc3 = enc4 = ""; } while (i < input.length); return output; } // base64加密结束
// 提交from到答题页面 function mfzsub(){ var uri = $('#mfz').attr('action'); inputhide(); if(getexport() == "IE"){ window.open('../'+uri+'?PAPERBANK_ID='+encode64($('#PAPERBANK_ID').val())+'&ORDERID='+encode64($('#ORDERID').val())+"&CLASSTYPE=" + encodeURI(encodeURI($('#CLASSTYPE').val())) + "&title=" + $('#title').val() +"&type=" + $('#type').val(),''); }else{ window.open(uri+'?PAPERBANK_ID='+encode64($('#PAPERBANK_ID').val())+'&ORDERID='+encode64($('#ORDERID').val())+"&CLASSTYPE=" + encodeURI(encodeURI($('#CLASSTYPE').val())) + "&title=" + $('#title').val() +"&type=" + $('#type').val(),''); } }
后台java处理
pd.put("CLASSTYPE", URLDecoder.decode(pd.getString("CLASSTYPE"))); pd.put("PAPERBANK_ID", Base.decode(pd.getString("PAPERBANK_ID"))); // pd.put("title", URLDecoder.decode(pd.getString("title"))); // pd.put("type", URLDecoder.decode(pd.getString("type"))); pd.put("ORDERID", Base.decode(pd.getString("ORDERID")));
base.java
package com.fh.util; import java.io.ByteArrayOutputStream; public class Base { private static byte[] base64DecodeChars = new byte[] { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1 }; /** * 解密 * * @param str * @return */ public static String decode(String str) { byte[] data = str.getBytes(); int len = data.length; ByteArrayOutputStream buf = new ByteArrayOutputStream(len); int i = 0; int b1, b2, b3, b4; while (i < len) { do { b1 = base64DecodeChars[data[i++]]; } while (i < len && b1 == -1); if (b1 == -1) { break; } do { b2 = base64DecodeChars[data[i++]]; } while (i < len && b2 == -1); if (b2 == -1) { break; } buf.write((int) ((b1 << 2) | ((b2 & 0x30) >>> 4))); do { b3 = data[i++]; if (b3 == 61) { return new String(buf.toByteArray()); } b3 = base64DecodeChars[b3]; } while (i < len && b3 == -1); if (b3 == -1) { break; } buf.write((int) (((b2 & 0x0f) << 4) | ((b3 & 0x3c) >>> 2))); do { b4 = data[i++]; if (b4 == 61) { return new String(buf.toByteArray()); } b4 = base64DecodeChars[b4]; } while (i < len && b4 == -1); if (b4 == -1) { break; } buf.write((int) (((b3 & 0x03) << 6) | b4)); } return new String(buf.toByteArray()); } }