webApi 验证basic-authentication认证的资源的各种语言的实现

HTTP Basic authentication (BA) 是一个基于http请求的，简单验证。详细资料：https://en.wikipedia.org/wiki/Basic_access_authentication。

它使用  Base64 传输，但是没有加密。登陆以后浏览器默认会，发送authentication

登陆以后。

登陆以前

解决办法，是发送请求的同时，发送authentication

要在发送请求的时候添加HTTP Basic Authentication认证信息到请求中，有两种方法：

• 一是在请求头中添加Authorization：

     Authorization: "Basic (用户名和密码)的base64加密字符串"

• 二是在url中添加用户名和密码：

       http://userName:password@api.minicloud.com.cn/statuses/friends_timeline.xml

详情请参考：访问需要HTTP Basic Authentication认证的资源的各种语言的实现

我的实现

        var Base64 = {
            // private property
            _keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
            // public method for encoding
            encode: function (input) {
                var output = "";
                var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
                var i = 0;
                input = Base64._utf8_encode(input);
                while (i < input.length) {
                    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 +
                    this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) +
                    this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);
                }
                return output;
            },
            // public method for decoding
            decode: function (input) {
                var output = "";
                var chr1, chr2, chr3;
                var enc1, enc2, enc3, enc4;
                var i = 0;
                input = input.replace(/[^A-Za-z0-9+/=]/g, "");
                while (i < input.length) {
                    enc1 = this._keyStr.indexOf(input.charAt(i++));
                    enc2 = this._keyStr.indexOf(input.charAt(i++));
                    enc3 = this._keyStr.indexOf(input.charAt(i++));
                    enc4 = this._keyStr.indexOf(input.charAt(i++));
                    chr1 = (enc1 << 2) | (enc2 >> 4);
                    chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
                    chr3 = ((enc3 & 3) << 6) | enc4;
                    output = output + String.fromCharCode(chr1);
                    if (enc3 != 64) {
                        output = output + String.fromCharCode(chr2);
                    }
                    if (enc4 != 64) {
                        output = output + String.fromCharCode(chr3);
                    }
                }
                output = Base64._utf8_decode(output);
                return output;
            },
            // private method for UTF-8 encoding
            _utf8_encode: function (string) {
                string = string.replace(/
/g, "
");
                var utftext = "";
                for (var n = 0; n < string.length; n++) {
                    var c = string.charCodeAt(n);
                    if (c < 128) {
                        utftext += String.fromCharCode(c);
                    }
                    else if ((c > 127) && (c < 2048)) {
                        utftext += String.fromCharCode((c >> 6) | 192);
                        utftext += String.fromCharCode((c & 63) | 128);
                    }
                    else {
                        utftext += String.fromCharCode((c >> 12) | 224);
                        utftext += String.fromCharCode(((c >> 6) & 63) | 128);
                        utftext += String.fromCharCode((c & 63) | 128);
                    }
                }
                return utftext;
            },
            // private method for UTF-8 decoding
            _utf8_decode: function (utftext) {
                var string = "";
                var i = 0;
                var c = c1 = c2 = 0;
                while (i < utftext.length) {
                    c = utftext.charCodeAt(i);
                    if (c < 128) {
                        string += String.fromCharCode(c);
                        i++;
                    }
                    else if ((c > 191) && (c < 224)) {
                        c2 = utftext.charCodeAt(i + 1);
                        string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
                        i += 2;
                    }
                    else {
                        c2 = utftext.charCodeAt(i + 1);
                        c3 = utftext.charCodeAt(i + 2);
                        string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
                        i += 3;
                    }
                }
                return string;
            }
        }
        
//ajax
     fnAjax: function (query, type, url) {
                $("#loading").show();
                var auth = uiCommon.fnmake_basic_auth('admin', 'qwer1234');
                $.ajax({
                    url: url,
                    type: type,
                    dataType: 'json',
                    contentType: 'application/json',
                    data: JSON.stringify(query),
                    beforeSend: function (req) {
                        req.setRequestHeader('Authorization', auth);
                    },
                    success: function (data) {
                        //alert("没有进入这里");
                        //alert(data);
                        $("#loading").hide();
                        if (data.Success) {
                            alert("发送成功！");
                        } else {
                            alert("发送失败！");
                        }
                        uiCommon.fnReload();
                    },

                    complete: function (XMLHttpRequest, textStatus) {
                        //uiCommon.fnReload();
                        //alert(textStatus);
                    },
                });
            }