jquery中通过ajax调用webservice传递数组参数的问题

如题.

还是直接用例子说明来的直接些.

本人的项目中通过jquery.ajax调用webservice.

客户端代码如下:

            $.ajax({
                url: "test/xxx.asmx",
                type: 'POST',
                dataType: 'xml',
                timeout: 1000,
                data: { name: "zhangsan", tags: ["aa", "bb", "cc"] },
                error: function(xml) {
                    alert(xml.responseText);
                },
                success: function(xml) {
                    alert("OK");
                }

            });

服务端代码如下:

  [WebMethod]
    public XmlDocument xxx(string name, string [] tags )
    { 
         return sth;  
    }

总是抛出异常.

问题出现在这里:

下面是HTTP数据:

POST http://xxx.com/xxx.asmx/xxx HTTP/1.1
Host: center.cmis.htpc.com.cn
Connection: keep-alive
Content-Length: 55
Cache-Control: max-age=0
Origin: http://xxx.com
User-Agent: Mozilla/5.0 (Windows NT 5.1) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/14.0.835.186 Safari/535.1
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Accept: application/xml, text/xml, */*; q=0.01
Referer: http://xxx.com/xxx.aspx
Accept-Encoding: gzip,deflate,sdch
Accept-Language: zh-CN,zh;q=0.8
Accept-Charset: GBK,utf-8;q=0.7,*;q=0.3

name=zhangsan&tags%5B%5D=aa&tags%5B%5D=bb&tags%5B%5D=cc

而它期望的格式是如下的:

POST /xxx.asmx/xxx HTTP/1.1
Host: xxx.com
Content-Type: application/x-www-form-urlencoded
Content-Length: length

name=string&tags=string&tags=string

比较上面粗体,post的数据除了问题. 正确的应该如下:

name=zhangsan&tags=aa&tags=bb&tags=cc

看来问题出在jquery.ajax上面了.见代码(jquery.1.8.3.js)

    function buildParams(prefix, obj, traditional, add) {
        var name;

        if (jQuery.isArray(obj)) { 
            // Serialize array item.
            jQuery.each(obj, function(i, v) {
                if (traditional || rbracket.test(prefix)) {                    
                    // Treat each array item as a scalar.
                    add(prefix, v);

                } else {
                    // If array item is non-scalar (array or object), encode its
                    // numeric index to resolve deserialization ambiguity issues.
                    // Note that rack (as of 1.0.0) can't currently deserialize
                    // nested arrays properly, and attempting to do so may cause
                    // a server error. Possible fixes are to modify rack's
                    // deserialization algorithm or to provide an option or flag
                    // to force array serialization to be shallow.
                    
                    //ytx 20130411
                    buildParams(prefix, v, traditional, add);
                    //buildParams(prefix + "[" + (typeof v === "object" ? i : "") + "]", v, traditional, add);
                }
            });

        } else if (!traditional && jQuery.type(obj) === "object") {
            // Serialize object item.
            for (name in obj) {
                buildParams(prefix + "[" + name + "]", obj[name], traditional, add);
            }

        } else {
            // Serialize scalar item.
            add(prefix, obj);
        }
    }

结论:

出问题的代码在22行,我修改成21行那样就行了.

不过,我对js/jquery都是一知半解的,希望不要引起别的后遗症,呵呵.