让Ajax更简单

之前写了一篇

最近把他拿出来更新了下,把demo也搞的更详细了一点

加入了blqw.Json,所以支持更多类型参数和返回值
优化了对exception的处理
增加了分页Pager对象
优化了注册页面变量的方式,更安全了

特点

首先他不需要任何的配置文件

没有额外dll ,他是开源的,只要你愿意, 他只有2个cs文件

使用之后前台js调用后台方法都是采用同步模式,这样更加接近C#后台的编程方式

var user = PostAjax8();

var message = ["姓名:"+ user.Name, "年龄:"+ user.Age, "生日:"+ user.Birthday].join("\n\r");

alert(message);

如果想实现异步效果需要使用setTimeout方法,比如这样

text1.value = "正在获取数据...";

setTimeout(function () {

    var a = PostAjax1();

    text1.value = "服务器返回:" + a;

}, 0);

C#的异常可以反映到js中

所以你可以在js直接使用中的try..catch..来处理它

function ajax8() {

    try {

        var user = PostAjax8();

        var message = ["姓名:" + user.Name, "年龄:" + user.Age, "生日:" + user.Birthday].join("\n\r");

        alert(message);

    } catch (e) {

        alert("出现异常:" + e.message);

    }

}

异常堆栈可以通过blqw.Ajax2.ThrowStack=true;设置,将详细堆栈信息也输出到前端页面js中

运行方式

首先是在Page_Load,或者前台页面中<% ... ... %>中加入

Ajax2.Register(this);

在该方法中,判断当前页面参数,如果普通请求,就注册js代码到页面中

debug模式中注册完整js

 #region javascript full

 #if DEBUG

         const string JAVASCRIPT = @"

     window.blqw = window.blqw || {};

     blqw.Ajax = blqw.Ajax || {};

     blqw.Ajax.GetRequest = function () {

         if (window.ActiveXObject) {

             try {

                 return new ActiveXObject('Msxml2.XMLHTTP');

             } catch (e) {

                 return new ActiveXObject('Microsoft.XMLHTTP');

             }

         }

         else if (window.XMLHttpRequest) {

             return new XMLHttpRequest();

         }

     }

     blqw.Ajax.Throw = function(e){{

             function AjaxError(message,stack,type){{

                 this.name = 'AjaxError';

                 this.type = type;

                 this.message = message;

                 this.stack = stack;

                 this.innerError = null;

                 this.toString = function () {{

                                     return 'message:' + this.message + '\r\n' + 'stack:' + e.stack;

                                 }};

             }};

             var err = new AjaxError(e.message,e.stack,e.type);

             var e1 = err;

             while(e.innerError){{

                 e = e.innerError;

                 e1.innerError = new AjaxError(e.message,e.stack,e.type);

                 e1 = e1.innerError;

             }}

             return err;

         }}

     blqw.Ajax.Exec = function (method, args) {

             var getStr = function (obj) {

                 if (obj == null) return '';

                 var type = typeof (obj);

                 switch (type) {

                     case 'number':

                     case 'boolean':

                         return obj.toString();

                     case 'string':

                         return encodeURIComponent(obj.replace('\0', '\0\0'));

                     case 'undefined':

                         return '';

                     case 'function':

                         try {

                             return arguments.callee(obj());

                         } catch (e) {

                             return '';

                         }

                     case 'object':

                         type = Object.prototype.toString.apply(obj);

                         switch (type) {

                             case '[object Date]':

                                 return encodeURIComponent(obj.getFullYear() + '-' +

                             (obj.getMonth() + 1) + '-' +

                             obj.getDate() + ' ' +

                             obj.getHours() + ':' +

                             obj.getMinutes() + ':' +

                             obj.getSeconds() + '.' +

                             obj.getMilliseconds());

                             case '[object RegExp]':

                                 return arguments.callee(obj.toString());

                             case '[object Array]':

                                 var arr = [];

                                 for (var i in obj) {

                                     arr.push(arguments.callee(obj[i]));

                                 }

                                 return '[' + arr.join(',') + ']';

                             case '[object Object]':

                                 var arr = [];

                                 for (var i in obj) {

                                     arr.push(i + ':""' + arguments.callee(obj[i]).replace('%22','%5C%22') + '""');

                                 }

                                 if (arr.length === 0) {

                                     return '{}';

                                 }

                                 return '{' + arr.join(',') + '}';

                         }

                         break;

                 }

             }

             var ajaxdata = '';

             if (args.length > 0) {

                 var arr = [];

                 for (var i = 0; i < args.length; i++) {

                     arr.push(getStr(args[i]));

                 }

                 ajaxdata = 'blqw.ajaxdata=' + arr.join('\0');

             }

             url = window.location.href;

             var req = blqw.Ajax.GetRequest();

             req.open('POST', url, false);

             req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=utf-8');

             var ret = req.send(ajaxdata + '&blqw.ajaxmethod=' + method);

             if (req.status == 200) {

                 var html = req.responseText;

                 var data = eval('(' + html+ ')');

                 if ('v' in data) {

                     eval(data.v);

                 }

                 if ('e' in data) {

                     throw blqw.Ajax.Throw(data.e);

                 } else {

                     return data.d;

                 }

             } else {

                 alert('出现错误');

             }

         }

 ";

         private static void Encode()

         {

             //var aaaa = new Yahoo.Yui.Compressor.JavaScriptCompressor(JAVASCRIPT, false, Encoding.UTF8, System.Globalization.CultureInfo.CurrentCulture).Compress().Replace("\"", "\"\"");

         }

 #endif

         #endregion

完整Js

release模式中注册精简js

 #region javascript min

 #if !DEBUG

         const string JAVASCRIPT = @"window.blqw=window.blqw||{};blqw.Ajax=blqw.Ajax||{};blqw.Ajax.GetRequest=function(){if(window.ActiveXObject)try{return new ActiveXObject(""Msxml2.XMLHTTP"")}catch(c){return new ActiveXObject(""Microsoft.XMLHTTP"")}else if(window.XMLHttpRequest)return new XMLHttpRequest};blqw.Ajax.Throw=function(c){for(var e=function(a,b,c){this.name=""AjaxError"";this.type=c;this.message=a;this.stack=b;this.innerError=null;this.toString=function(){return'message:'+this.message+'\r\n'+'stack:'+e.stack}},a=new e(c.message,c.stack,c.type),d=a;c.innerError;)c=c.innerError,d.innerError=new e(c.message,c.stack,c.type),d=d.innerError;return a};blqw.Ajax.Exec=function(c,e){var a=function(b){if(null==b)return"""";var a;switch(typeof b){case ""number"":case ""boolean"":return b.toString();case ""string"":return encodeURIComponent(b.replace(""\0"",""\0\0""));case ""undefined"":return"""";case ""function"":try{return arguments.callee(b())}catch(c){return""""}case ""object"":switch(a=Object.prototype.toString.apply(b),a){case ""[object Date]"":return encodeURIComponent(b.getFullYear()+""-""+(b.getMonth()+1)+""-""+b.getDate()+"" ""+b.getHours()+"":""+b.getMinutes()+"":""+b.getSeconds()+"".""+b.getMilliseconds());case ""[object RegExp]"":return arguments.callee(b.toString());case ""[object Array]"":a=[];for(var d in b)a.push(arguments.callee(b[d]));return""[""+a.join("","")+""]"";case ""[object Object]"":a=[];for(d in b)a.push(d+':""'+arguments.callee(b[d]).replace(""%22"",""%5C%22"")+'""');return 0===a.length?""{}"":""{""+a.join("","")+""}""}}},d="""";if(0<e.length){for(var d=[],f=0;f<e.length;f++)d.push(a(e[f]));d=""blqw.ajaxdata=""+d.join(""\x00"")}url=window.location.href;a=blqw.Ajax.GetRequest();a.open(""POST"",url,!1);a.setRequestHeader(""Content-Type"",""application/x-www-form-urlencoded; charset=utf-8"");a.send(d+""&blqw.ajaxmethod=""+c);if(200==a.status){a=eval(""(""+a.responseText+"")"");""v""in a&&eval(a.v);if(""e""in a)throw blqw.Ajax.Throw(a.e);return a.d}alert(""出现错误"")};";

 #endif

         #endregion

精简js

接下来,会反射被标识为AjaxMethod的方法,再加入到页面的js中,比如这样

function PostAjax1(){return blqw.Ajax.Exec('PostAjax1',arguments);}

然后就可以在js中上直接使用 PostAjax1()调用后台的方法了

执行blqw.Ajax.Exec()方法会使用ajax方式请求当前页面,添加post参数,比如

blqw.ajaxdata:{Name:"冰麟轻武",Age:"28",Birthday:"1986-10-29"}

blqw.ajaxmethod:PostAjax7

这时候又会进入blqw.Ajax2.Register方法,会判断blqw.ajaxmethod 如果存在这个参数就会使用Literacy组件反射对应的方法,并使用json组件反序列化参数,

调用后台方法之后再序列化参数并输出到页面中

如果调用后台方法中出现异常,将会序列化异常对象(Exception)到前台,并在js中throw出来

页面Demo

下载

blqw.Ajax2Demo.rar

https://code.csdn.net/jy02305022/blqw-ajax2