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使用jQuery向asp.net Mvc传递复杂json数据-ModelBinder篇

jQuery提供的ajax方法能很方便的实现客户端与服务器的异步交互,在asp.net mvc 框架使用jQuery能很方便地异步获取提交数据,给用户提供更好的体验!

调用jQuery的ajax方法时,jQuery会根据post或者get协议对参数data进行序列化;

如果提交的数据使用复杂的json数据,例如:

{userId:32323,userName:{firstName:"李",lastName:"李大嘴"}}

那么服务器是无法正常接收到完整的参数,因为jQuery对data的序列化,是使用了键值对拼装的方式;

参数拼装成 userId=32323&userName=object ; userName所指向的对象被序列化成字符串"object"

如何才能把一个复杂的object对象提交到后台的action参数中呢?

首先,解决jQuery对于参数序列化的问题:

1 /*对象序列化为字符串*/
2 String.toSerialize = function(obj) {
3 var ransferCharForJavascript = function(s) {
4 var newStr = s.replace(
5 /[\x26\x27\x3C\x3E\x0D\x0A\x22\x2C\x5C\x00]/g,
6 function(c) {
7 ascii = c.charCodeAt(0)
8 return '\\u00' + (ascii < 16 ? '0' + ascii.toString(16) : ascii.toString(16))
9 }
10 );
11 return newStr;
12 }
13 if (obj == null) {
14 return null
15 }
16 else if (obj.constructor == Array) {
17 var builder = [];
18 builder.push("[");
19 for (var index in obj) {
20 if (typeof obj[index] == "function") continue;
21 if (index > 0) builder.push(",");
22 builder.push(String.toSerialize(obj[index]));
23 }
24 builder.push("]");
25 return builder.join("");
26 }
27 else if (obj.constructor == Object) {
28 var builder = [];
29 builder.push("{");
30 var index = 0;
31 for (var key in obj) {
32 if (typeof obj[key] == "function") continue;
33 if (index > 0) builder.push(",");
34 builder.push(String.format("\"{0}\":{1}", key, String.toSerialize(obj[key])));
35 index++;
36 }
37 builder.push("}");
38 return builder.join("");
39 }
40 else if (obj.constructor == Boolean) {
41 return obj.toString();
42 }
43 else if (obj.constructor == Number) {
44 return obj.toString();
45 }
46 else if (obj.constructor == String) {
47 return String.format('"{0}"', ransferCharForJavascript(obj));
48 }
49 else if (obj.constructor == Date) {
50 return String.format('{"__DataType":"Date","__thisue":{0}}', obj.getTime() - (new Date(1970, 0, 1, 0, 0, 0)).getTime());
51 }
52 else if (this.toString != undefined) {
53 return String.toSerialize(obj);
54 }
55 }
56

jQuery异步请求:

1 $(function() {
2 /*按钮点击事件*/
3 $("#btn_post_test").click(function() {
4 var data = [
5 { UserId: "11", UserName: { FirstName: "323", LastName: "2323" }, Keys: ["xiaoming", "xiaohong"] },
6 { UserId: "22", UserName: { FirstName: "323", LastName: "2323" }, Keys: ["xiaoming", "xiaohong"] },
7 { UserId: "33", UserName: { FirstName: "323", LastName: "2323" }, Keys: ["xiaoming", "xiaohong"] }
8 ];
9
10 $.post("Home/Test", { users: String.toSerialize(data) }, function(text) {
11 alert(String.toSerialize(text));
12 }, "json");
13 });
14 });

点击按钮提交数据,监控浏览器,可以发现提交的数据是json对象的序列化后的内容:

1 POST /Home/Test HTTP/1.1
2 x-requested-with: XMLHttpRequest
3 Accept-Language: zh-cn
4 Referer: http://localhost:3149/test.html
5 Accept: application/json, text/javascript, */*
6 Content-Type: application/x-www-form-urlencoded
7 Accept-Encoding: gzip, deflate
8 User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; .NET4.0C; .NET4.0E)
9 Host: localhost:3149
10 Content-Length: 501
11 Connection: Keep-Alive
12 Cache-Control: no-cache
13 Cookie: CookieGlobalLoginUserID=16063
14
15 users=%5B%7B%22UserId%22%3A%2211%22%2C%22Name%22%3A%7B%22FirstName%22%3A%22323%22%2C%22LastName%22%3A%222323%22%7D%2C%22Keys%22%3A%5B%22xiaoming%22%2C%22xiaohong%22%5D%7D%2C%7B%22UserId%22%3A%2222%22%2C%22Name%22%3A%7B%22FirstName%22%3A%22323%22%2C%22LastName%22%3A%222323%22%7D%2C%22Keys%22%3A%5B%22xiaoming%22%2C%22xiaohong%22%5D%7D%2C%7B%22UserId%22%3A%2233%22%2C%22Name%22%3A%7B%22FirstName%22%3A%22323%22%2C%22LastName%22%3A%222323%22%7D%2C%22Keys%22%3A%5B%22xiaoming%22%2C%22xiaohong%22%5D%7D%5D

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