post 传递参数中包含 html 代码解决办法,js加密,.net解密

  今天遇到一个问题,就是用post方式传递参数,程序在vs中完美调试,但是在iis中,就无法运行了,显示传递的参数获取不到,报错了,查看浏览器请求情况,错误500,服务器内部错误,当时第一想法是接收方式有问题,换了无数次接收方式,都没有效,后来在请求情况的,Response中发现,其实根本原因是由于post参数中不能包含html代码,设计到跨域攻击...,所以被禁止了。

  微软给出的建议是 ASP.NET Web窗体中禁用请求验证 ,我是没成功,后来我查到其实可以用在前端用js base64加密,后端再用.net base64解密一下就好了,就能完美避过html代码这个问题,情景介绍完毕,下面上代码。

  js 加密:

  1 function Base64() {
  2 
  3                 // private property  
  4                 _keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
  5 
  6                 // public method for encoding  
  7                 this.encode = function (input) {
  8                     var output = "";
  9                     var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
 10                     var i = 0;
 11                     input = _utf8_encode(input);
 12                     while (i < input.length) {
 13                         chr1 = input.charCodeAt(i++);
 14                         chr2 = input.charCodeAt(i++);
 15                         chr3 = input.charCodeAt(i++);
 16                         enc1 = chr1 >> 2;
 17                         enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
 18                         enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
 19                         enc4 = chr3 & 63;
 20                         if (isNaN(chr2)) {
 21                             enc3 = enc4 = 64;
 22                         } else if (isNaN(chr3)) {
 23                             enc4 = 64;
 24                         }
 25                         output = output +
 26                             _keyStr.charAt(enc1) + _keyStr.charAt(enc2) +
 27                             _keyStr.charAt(enc3) + _keyStr.charAt(enc4);
 28                     }
 29                     return output;
 30                 }
 31 
 32                 // public method for decoding  
 33                 this.decode = function (input) {
 34                     var output = "";
 35                     var chr1, chr2, chr3;
 36                     var enc1, enc2, enc3, enc4;
 37                     var i = 0;
 38                     input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
 39                     while (i < input.length) {
 40                         enc1 = _keyStr.indexOf(input.charAt(i++));
 41                         enc2 = _keyStr.indexOf(input.charAt(i++));
 42                         enc3 = _keyStr.indexOf(input.charAt(i++));
 43                         enc4 = _keyStr.indexOf(input.charAt(i++));
 44                         chr1 = (enc1 << 2) | (enc2 >> 4);
 45                         chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
 46                         chr3 = ((enc3 & 3) << 6) | enc4;
 47                         output = output + String.fromCharCode(chr1);
 48                         if (enc3 != 64) {
 49                             output = output + String.fromCharCode(chr2);
 50                         }
 51                         if (enc4 != 64) {
 52                             output = output + String.fromCharCode(chr3);
 53                         }
 54                     }
 55                     output = _utf8_decode(output);
 56                     return output;
 57                 }
 58 
 59                 // private method for UTF-8 encoding  
 60                 _utf8_encode = function (string) {
 61                     string = string.replace(/\r\n/g, "\n");
 62                     var utftext = "";
 63                     for (var n = 0; n < string.length; n++) {
 64                         var c = string.charCodeAt(n);
 65                         if (c < 128) {
 66                             utftext += String.fromCharCode(c);
 67                         } else if ((c > 127) && (c < 2048)) {
 68                             utftext += String.fromCharCode((c >> 6) | 192);
 69                             utftext += String.fromCharCode((c & 63) | 128);
 70                         } else {
 71                             utftext += String.fromCharCode((c >> 12) | 224);
 72                             utftext += String.fromCharCode(((c >> 6) & 63) | 128);
 73                             utftext += String.fromCharCode((c & 63) | 128);
 74                         }
 75 
 76                     }
 77                     return utftext;
 78                 }
 79 
 80                 // private method for UTF-8 decoding  
 81                 _utf8_decode = function (utftext) {
 82                     var string = "";
 83                     var i = 0;
 84                     var c = c1 = c2 = 0;
 85                     while (i < utftext.length) {
 86                         c = utftext.charCodeAt(i);
 87                         if (c < 128) {
 88                             string += String.fromCharCode(c);
 89                             i++;
 90                         } else if ((c > 191) && (c < 224)) {
 91                             c2 = utftext.charCodeAt(i + 1);
 92                             string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
 93                             i += 2;
 94                         } else {
 95                             c2 = utftext.charCodeAt(i + 1);
 96                             c3 = utftext.charCodeAt(i + 2);
 97                             string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
 98                             i += 3;
 99                         }
100                     }
101                     return string;
102                 }
103             }

  使用方式:

1          //1.加密  
2          var base = new Base64();
3          var result = base.encode(str);

  .net 解密:

1         /// <summary>
2         /// Base64解密,采用utf8编码方式解密
3         /// </summary>
4         /// <param name="result">待解密的密文</param>
5         /// <returns>解密后的字符串</returns>
6         public static string Base64Decode(string result)
7         {
8             return Base64Decode(Encoding.UTF8, result);
9         }

  另外附上js加密的链接地址,可以多学习一下,https://blog.csdn.net/u012369749/article/details/73784897,哈哈,事已至此,问题就解决了。

posted @ 2019-03-04 19:21  没有梦想也没有妳  阅读(1764)  评论(0编辑  收藏  举报