jQuery调用WCF服务传递JSON对象

下面这个示例使用了WCF去创建一个服务端口从而能够被ASP.Net页面通过jQuery的AJAX方法访问,我们将在客户端使用Ajax技术来 与WCF服务进行通信。这里我们仅使用jQuery去连接Web Service,而不去使用ASP.Net AJAX库,至于为什么不使用AJAX库中,那是因为我们在项目中已经使用了jQuery,而它已经能处理全部的AJAX请求和所有功能,并且,如果我们 一旦使用ASP.NET AJAX库,我们也必须多包含一个超过80Kb的数据量(调试模式下会更大),但这也不是说ASP.NET AJAX库不实用,事实上,如果使用了相同的类库,我们能够少写很多的额外代码,但这个例子就是为了说明,在没有一个好的客户端代理的情况下,我们是如何调用Web服务的。

WCF 服务:

我们先创建一个WebSite,然后添加一个AJAX-enabled WCF Service,从而创建WCF服务。(请确保你使用了正确的.Net Framework 版本,我用的是3.5)
jQuery调用WCF服务传递JSON对象

在我们添加完service后,它会自动进入该service的后置代码文件,Go ahead and browse around the file for a second.

首先我们要做的是找到"AspNetCompatibilityRequirements"并将其值置为 "Allowed":

[AspNetCompatibilityRequirements( RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed )] 

这个属性的设置可将我们的服务跑在ASP.NET compatibility模式,如果我们未将该值设为"Allowed",那么就无法通过ASP.Net去访问到该服务,这个属性是当你添加 "AJAX-enabled WCF Service" 时自动生成的。更多祥细请参看MSDN。

现在再来看自动生成的后置代码文件,我们能发现已经存在了一个被标注了"OperationContract"特性的"DoWork()" 的方法,这个方法是自动生成的,我们将使用这个方法来完成下面的示例。我们再来为该方法添加一个"WebGet"的特性,并设"RequestFormat" 的值为 "Json." 我们再来为该方法加上另外的一个特性RequestFormat,WebGet 和Get动词一样,作用于一个UriTemplate(本文不对此作进一步讨论),RequestFormat 特性可以让我们接收JSON格式的请求。

我们的 "DoWork()" 方法如下:

<ol class="dp-j">
<li class="alt"><span><span>[OperationContract]   </span></span></li>
<li class=""><span>[WebGet( RequestFormat=WebMessageFormat.Json )]   </span></li>
<li class="alt">
<span></span><span class="keyword">public</span><span> </span><span class="keyword">void</span><span> DoWork()   </span>
</li>
<li class=""><span>{   </span></li>
<li class="alt">
<span>    </span><span class="comment">// Add your operation implementation here  </span><span> </span>
</li>
<li class="">
<span>    </span><span class="keyword">return</span><span>;   </span>
</li>
<li class="alt"><span>} </span></li>
</ol>

对象的模型:

我们希望通过"DoWork()" 来传递一个叫“Person”的对象,那先来创建一个Person对象写入到当前类的头部,其包含字段和属性(Name, Age 和 the types of Shoes they own),这个类同时也作为所传递JSON的结构。

<ol class="dp-j">
<li class="alt"><span><span>[Serializable]   </span></span></li>
<li class="">
<span>[DataContract( Namespace = </span><span class="string"><font color="#0000ff">"http://www.dennydotnet.com/"</font></span><span>, Name = </span><span class="string"><font color="#0000ff">"Person"</font></span><span> )]   </span>
</li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">public</font></strong></span><span> </span><span class="keyword"><strong><font color="#006699">class</font></strong></span><span> Person   </span>
</li>
<li class=""><span>{   </span></li>
<li class="alt">
<span>    </span><span class="keyword"><strong><font color="#006699">private</font></strong></span><span> string _name = string.Empty;   </span>
</li>
<li class="">
<span>    </span><span class="keyword"><strong><font color="#006699">private</font></strong></span><span> </span><span class="keyword"><strong><font color="#006699">int</font></strong></span><span> _age = </span><span class="number"><font color="#c00000">0</font></span><span>;   </span>
</li>
<li class="alt"><span> </span></li>
<li class="">
<span>    [DataMember( IsRequired = </span><span class="keyword"><strong><font color="#006699">true</font></strong></span><span>, Name = </span><span class="string"><font color="#0000ff">"Name"</font></span><span> )]   </span>
</li>
<li class="alt">
<span>    </span><span class="keyword"><strong><font color="#006699">public</font></strong></span><span> string Name   </span>
</li>
<li class=""><span>    {   </span></li>
<li class="alt">
<span>        get { </span><span class="keyword"><strong><font color="#006699">return</font></strong></span><span> _name; }   </span>
</li>
<li class=""><span>        set { _name = value; }   </span></li>
<li class="alt"><span>    }   </span></li>
<li class=""><span> </span></li>
<li class="alt">
<span>    [DataMember( IsRequired = </span><span class="keyword"><strong><font color="#006699">true</font></strong></span><span>, Name = </span><span class="string"><font color="#0000ff">"Age"</font></span><span> )]   </span>
</li>
<li class="">
<span>    </span><span class="keyword"><strong><font color="#006699">public</font></strong></span><span> </span><span class="keyword"><strong><font color="#006699">int</font></strong></span><span> Age   </span>
</li>
<li class="alt"><span>    {   </span></li>
<li class="">
<span>        get { </span><span class="keyword"><strong><font color="#006699">return</font></strong></span><span> _age; }   </span>
</li>
<li class="alt"><span>        set { _age = value; }   </span></li>
<li class=""><span>    }   </span></li>
<li class="alt"><span> </span></li>
<li class="">
<span>    [DataMember( IsRequired = </span><span class="keyword"><strong><font color="#006699">true</font></strong></span><span>, Name = </span><span class="string"><font color="#0000ff">"Shoes"</font></span><span> )]   </span>
</li>
<li class="alt">
<span>    </span><span class="keyword"><strong><font color="#006699">public</font></strong></span><span> List<String> Shoes;   </span>
</li>
<li class=""><span>}   </span></li>
<li class="alt"><span> </span></li>
<li class=""><span>   </span></li>
</ol>

我们已经为 "Person”类的名称和命名空间标注上了契约,我们仍需要为属性授于数据成员特性,为每个属性 设置"IsRequired"并具体指定其名称。你只需要具体指定名字,如果它和属性名不一样。举例来说吧,如果你有一个属性叫作“Level”,但你在 数据成员特性中赋值为“Rank”,现在我们要回去修改我们的“DoWork()”方法,去接收Person对象作为参数。具体参下面代码块。

<ol class="dp-c">
<li class="alt"><span><span>[OperationContract]   </span></span></li>
<li class=""><span>[WebGet( RequestFormat=WebMessageFormat.Json )]   </span></li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">public</font></strong></span><span> </span><span class="keyword"><strong><font color="#006699">void</font></strong></span><span> DoWork(Person p)   </span>
</li>
<li class=""><span>{   </span></li>
<li class="alt">
<span>    </span><span class="comment"><font color="#008200">// Add your operation implementation here  </font></span><span> </span>
</li>
<li class="">
<span>    </span><span class="keyword"><strong><font color="#006699">return</font></strong></span><span>;   </span>
</li>
<li class="alt"><span>}  </span></li>
<li class=""><span>  </span></li>
</ol>

对Web.Config文件进行配置:
我们仅需对web.config文件做出很小的修改就能对服务进行访问了。首先加入一个 serviceBehavior 用来允许Http Get请求,再添加一些调试选项帮助。代码如下:

Below </endpointBehaviors>

<ol class="dp-xml">
<li class="alt"><span><strong><font color="#006699"><span class="tag"><</span><span class="tag-name">serviceBehaviors</span><span class="tag">></span></font></strong><span>   </span></span></li>
<li class="">
<span>    </span><strong><font color="#006699"><span class="tag"><</span><span class="tag-name">behavior</span></font></strong><span> </span><span class="attribute"><font color="#ff0000">name</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"ServiceAspNetAjaxBehavior"</font></span><span class="tag"><strong><font color="#006699">></font></strong></span><span>   </span>
</li>
<li class="alt">
<span>        </span><strong><font color="#006699"><span class="tag"><</span><span class="tag-name">serviceMetadata</span></font></strong><span> </span><span class="attribute"><font color="#ff0000">httpGetEnabled</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"true"</font></span><span> </span><span class="attribute"><font color="#ff0000">httpGetUrl</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">""</font></span><span> </span><span class="tag"><strong><font color="#006699">/></font></strong></span><span>   </span>
</li>
<li class="">
<span>        </span><strong><font color="#006699"><span class="tag"><</span><span class="tag-name">serviceDebug</span></font></strong><span> </span><span class="attribute"><font color="#ff0000">httpHelpPageEnabled</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"true"</font></span><span> </span><span class="attribute"><font color="#ff0000">includeExceptionDetailInFaults</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"true"</font></span><span> </span><span class="tag"><strong><font color="#006699">/></font></strong></span><span>   </span>
</li>
<li class="alt">
<span>    </span><strong><font color="#006699"><span class="tag"></</span><span class="tag-name">behavior</span><span class="tag">></span></font></strong><span>   </span>
</li>
<li class="">
<span></span><strong><font color="#006699"><span class="tag"></</span><span class="tag-name">serviceBehaviors</span><span class="tag">></span></font></strong><span> </span>
</li>
<li class="alt"><span>  </span></li>
</ol>

在<services>这里</services>之间,你的代码如下:

<ol class="dp-xml">
<li class="alt"><span><strong><font color="#006699"><span class="tag"><</span><span class="tag-name">service</span></font></strong><span> </span><span class="attribute"><font color="#ff0000">name</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"Service"</font></span><span> </span><span class="attribute"><font color="#ff0000">behaviorConfiguration</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"ServiceAspNetAjaxBehavior"</font></span><span class="tag"><strong><font color="#006699">></font></strong></span><span>   </span></span></li>
<li class="">
<span>    </span><strong><font color="#006699"><span class="tag"><</span><span class="tag-name">endpoint</span></font></strong><span> </span><span class="attribute"><font color="#ff0000">address</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">""</font></span><span> </span><span class="attribute"><font color="#ff0000">behaviorConfiguration</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"ServiceAspNetAjaxBehavior"</font></span><span>   </span>
</li>
<li class="alt">
<span></span><span class="attribute"><font color="#ff0000">binding</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"webHttpBinding"</font></span><span> </span><span class="attribute"><font color="#ff0000">contract</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"Service"</font></span><span> </span><span class="tag"><strong><font color="#006699">/></font></strong></span><span>   </span>
</li>
<li class="">
<span>    </span><strong><font color="#006699"><span class="tag"><</span><span class="tag-name">endpoint</span></font></strong><span> </span><span class="attribute"><font color="#ff0000">address</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"mex"</font></span><span> </span><span class="attribute"><font color="#ff0000">binding</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"mexHttpBinding"</font></span><span> </span><span class="attribute"><font color="#ff0000">contract</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"IMetadataExchange"</font></span><span> </span><span class="tag"><strong><font color="#006699">/></font></strong></span><span>   </span>
</li>
<li class="alt">
<span></span><strong><font color="#006699"><span class="tag"></</span><span class="tag-name">service</span><span class="tag">></span></font></strong><span>   </span>
</li>
<li class=""><span>  </span></li>
</ol>

注意:

<ol class="dp-xml"><li class="alt"><span><strong><font color="#006699"><span class="tag"><</span><span class="tag-name">serviceDebug</span></font></strong><span> </span><span class="attribute"><font color="#ff0000">httpHelpPageEnabled</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"true"</font></span><span> </span><span class="attribute"><font color="#ff0000">includeExceptionDetailInFaults</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"true"</font></span><span> </span><span class="tag"><strong><font color="#006699">/></font></strong></span><span>  </span></span></li></ol>

允许例外可能会导致内部应用相关信息,包括个人信息的泄露。设置为true仅用于调试目的!

你的Web.config文件修改后如下图所示:

jQuery调用WCF服务传递JSON对象

回到前端页面:

现在我们的服务已经被创建和配置了,再来关注前端页面部分吧(确保页面已引用jQuery.js文件),首先来创建一个简单的Json对象用于向service传递,我们在Person类结构的基础上创建该JSON对象。

<ol class="dp-c"><li class="alt"><span><span class="keyword"><strong><font color="#006699">var</font></strong></span><span> mydata = { </span><span class="string"><font color="#0000ff">"Name"</font></span><span>:</span><span class="string"><font color="#0000ff">"Denny"</font></span><span>, </span><span class="string"><font color="#0000ff">"Age"</font></span><span>:23, </span><span class="string"><font color="#0000ff">"Shoes"</font></span><span>:[</span><span class="string"><font color="#0000ff">"Nike"</font></span><span>,</span><span class="string"><font color="#0000ff">"Osiris"</font></span><span>,</span><span class="string"><font color="#0000ff">"Etnies"</font></span><span>] };  </span></span></li></ol>

如果你对JSON还不是很熟悉,我们可以把它看作一个对象,这个小工具帮助你来查看 (JsonViewer):

jQuery调用WCF服务传递JSON对象

我们需要使用WCF和jQuery进行Ajax通信,下面的代码创建了一个AJAX呼叫,在头部设置了GET方式,和内容类型为 application/json,将url的路径置为WCF 服务的 svc 文件,并在其后加上/和所要执行方法的名称,在这里我们要调用的是DoWork()方法,data是用来传递参数,为了让jQuery不去自动处理我们的 数据,将processData设为false,我们还加入了对success和error的处理,以更多的了解AJAX执行完之后的处理过程。

<ol class="dp-c">
<li class="alt"><span><span class="keyword"><strong><font color="#006699">function</font></strong></span><span> sendAJAX(data) {   </span></span></li>
<li class=""><span>    $.ajax({   </span></li>
<li class="alt">
<span>        type: </span><span class="string"><font color="#0000ff">"GET"</font></span><span>,   </span>
</li>
<li class="">
<span>        contentType: </span><span class="string"><font color="#0000ff">"application/json"</font></span><span>,   </span>
</li>
<li class="alt">
<span>        url: </span><span class="string"><font color="#0000ff">"Service.svc/DoWork"</font></span><span>,   </span>
</li>
<li class=""><span>        data: data,   </span></li>
<li class="alt">
<span>        processData: </span><span class="keyword"><strong><font color="#006699">false</font></strong></span><span>,   </span>
</li>
<li class="">
<span>        success: </span><span class="keyword"><strong><font color="#006699">function</font></strong></span><span>(msg){   </span>
</li>
<li class="alt">
<span>                alert( </span><span class="string"><font color="#0000ff">"Data Saved!"</font></span><span> );   </span>
</li>
<li class=""><span>        },   </span></li>
<li class="alt">
<span>        error:</span><span class="keyword"><strong><font color="#006699">function</font></strong></span><span>(XMLHttpRequest, textStatus, errorThrown){   </span>
</li>
<li class="">
<span>                alert( </span><span class="string"><font color="#0000ff">"Error Occured!"</font></span><span> );   </span>
</li>
<li class="alt"><span>        }   </span></li>
<li class=""><span>    });   </span></li>
<li class="alt"><span>}  </span></li>
<li class=""><span>  </span></li>
</ol>

然而很不幸运,这里有一个小的问题,我们必须发送真正的JSON字符串,作为参数传递。但还没有简单的方法让JSON对象转换为字符串,如果你试了data.toString(),得到的会是一个 "[object Object]"值。这不是我们想要的。

所以在这里我们要修改方法使得它能将JSON转换成字符串。

<ol class="dp-c">
<li class="alt"><span><span class="keyword"><strong><font color="#006699">function</font></strong></span><span> json2string(strObject) {   </span></span></li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">var</font></strong></span><span> c, i, l, s = </span><span class="string"><font color="#0000ff">''</font></span><span>, v, p;   </span>
</li>
<li class="alt"><span> </span></li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">switch</font></strong></span><span> (</span><span class="keyword"><strong><font color="#006699">typeof</font></strong></span><span> strObject) {   </span>
</li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">case</font></strong></span><span> </span><span class="string"><font color="#0000ff">'object'</font></span><span>:   </span>
</li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (strObject) {   </span>
</li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (strObject.length && </span><span class="keyword"><strong><font color="#006699">typeof</font></strong></span><span> strObject.length == </span><span class="string"><font color="#0000ff">'number'</font></span><span>) {   </span>
</li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">for</font></strong></span><span> (i = 0; i < strObject.length; ++i) {   </span>
</li>
<li class="alt"><span>     v = json2string(strObject[i]);   </span></li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (s) {   </span>
</li>
<li class="alt">
<span>      s += </span><span class="string"><font color="#0000ff">','</font></span><span>;   </span>
</li>
<li class=""><span>     }   </span></li>
<li class="alt"><span>     s += v;   </span></li>
<li class=""><span>    }   </span></li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">return</font></strong></span><span> </span><span class="string"><font color="#0000ff">'['</font></span><span> + s + </span><span class="string"><font color="#0000ff">']'</font></span><span>;   </span>
</li>
<li class="">
<span>   } </span><span class="keyword"><strong><font color="#006699">else</font></strong></span><span> </span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (</span><span class="keyword"><strong><font color="#006699">typeof</font></strong></span><span> strObject.toString != </span><span class="string"><font color="#0000ff">'undefined'</font></span><span>) {   </span>
</li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">for</font></strong></span><span> (i </span><span class="keyword"><strong><font color="#006699">in</font></strong></span><span> strObject) {   </span>
</li>
<li class=""><span>     v = strObject[i];   </span></li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (</span><span class="keyword"><strong><font color="#006699">typeof</font></strong></span><span> v != </span><span class="string"><font color="#0000ff">'undefined'</font></span><span> && </span><span class="keyword"><strong><font color="#006699">typeof</font></strong></span><span> v != </span><span class="string"><font color="#0000ff">'function'</font></span><span>) {   </span>
</li>
<li class=""><span>      v = json2string(v);   </span></li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (s) {   </span>
</li>
<li class="">
<span>       s += </span><span class="string"><font color="#0000ff">','</font></span><span>;   </span>
</li>
<li class="alt"><span>      }   </span></li>
<li class="">
<span>      s += json2string(i) + </span><span class="string"><font color="#0000ff">':'</font></span><span> + v;   </span>
</li>
<li class="alt"><span>     }   </span></li>
<li class=""><span>    }   </span></li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">return</font></strong></span><span> </span><span class="string"><font color="#0000ff">'{'</font></span><span> + s + </span><span class="string"><font color="#0000ff">'}'</font></span><span>;   </span>
</li>
<li class=""><span>   }   </span></li>
<li class="alt"><span>  }   </span></li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">return</font></strong></span><span> </span><span class="string"><font color="#0000ff">'null'</font></span><span>;   </span>
</li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">case</font></strong></span><span> </span><span class="string"><font color="#0000ff">'number'</font></span><span>:   </span>
</li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">return</font></strong></span><span> isFinite(strObject) ? String(strObject) : </span><span class="string"><font color="#0000ff">'null'</font></span><span>;   </span>
</li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">case</font></strong></span><span> </span><span class="string"><font color="#0000ff">'string'</font></span><span>:   </span>
</li>
<li class=""><span>  l = strObject.length;   </span></li>
<li class="alt">
<span>  s = </span><span class="string"><font color="#0000ff">'"'</font></span><span>;   </span>
</li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">for</font></strong></span><span> (i = 0; i < l; i += 1) {   </span>
</li>
<li class="alt"><span>   c = strObject.charAt(i);   </span></li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (c >= </span><span class="string"><font color="#0000ff">' '</font></span><span>) {   </span>
</li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (c == </span><span class="string"><font color="#0000ff">'\\' || c == '</font></span><span>"') {   </span>
</li>
<li class="">
<span>     s += </span><span class="string"><font color="#0000ff">'\\'</font></span><span>;   </span>
</li>
<li class="alt"><span>    }   </span></li>
<li class=""><span>    s += c;   </span></li>
<li class="alt">
<span>   } </span><span class="keyword"><strong><font color="#006699">else</font></strong></span><span> {   </span>
</li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">switch</font></strong></span><span> (c) {   </span>
</li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">case</font></strong></span><span> </span><span class="string"><font color="#0000ff">'\b'</font></span><span>:   </span>
</li>
<li class="">
<span>      s += </span><span class="string"><font color="#0000ff">'\\b'</font></span><span>;   </span>
</li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">break</font></strong></span><span>;   </span>
</li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">case</font></strong></span><span> </span><span class="string"><font color="#0000ff">'\f'</font></span><span>:   </span>
</li>
<li class="alt">
<span>      s += </span><span class="string"><font color="#0000ff">'\\f'</font></span><span>;   </span>
</li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">break</font></strong></span><span>;   </span>
</li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">case</font></strong></span><span> </span><span class="string"><font color="#0000ff">'\n'</font></span><span>:   </span>
</li>
<li class="">
<span>      s += </span><span class="string"><font color="#0000ff">'\\n'</font></span><span>;   </span>
</li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">break</font></strong></span><span>;   </span>
</li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">case</font></strong></span><span> </span><span class="string"><font color="#0000ff">'\r'</font></span><span>:   </span>
</li>
<li class="alt">
<span>      s += </span><span class="string"><font color="#0000ff">'\\r'</font></span><span>;   </span>
</li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">break</font></strong></span><span>;   </span>
</li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">case</font></strong></span><span> </span><span class="string"><font color="#0000ff">'\t'</font></span><span>:   </span>
</li>
<li class="">
<span>      s += </span><span class="string"><font color="#0000ff">'\\t'</font></span><span>;   </span>
</li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">break</font></strong></span><span>;   </span>
</li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">default</font></strong></span><span>:   </span>
</li>
<li class="alt"><span>      c = c.charCodeAt();   </span></li>
<li class="">
<span>      s += </span><span class="string"><font color="#0000ff">'\\u00'</font></span><span> + Math.floor(c / 16).toString(16) +   </span>
</li>
<li class="alt"><span>       (c % 16).toString(16);   </span></li>
<li class=""><span>    }   </span></li>
<li class="alt"><span>   }   </span></li>
<li class=""><span>  }   </span></li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">return</font></strong></span><span> s + </span><span class="string"><font color="#0000ff">'"'</font></span><span>;   </span>
</li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">case</font></strong></span><span> </span><span class="string"><font color="#0000ff">'boolean'</font></span><span>:   </span>
</li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">return</font></strong></span><span> String(strObject);   </span>
</li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">default</font></strong></span><span>:   </span>
</li>
<li class="alt">
<span></span><span class="keyword"><strong><font color="#006699">return</font></strong></span><span> </span><span class="string"><font color="#0000ff">'null'</font></span><span>;   </span>
</li>
<li class=""><span>}   </span></li>
<li class="alt"><span>}   </span></li>
<li class=""><span>   </span></li>
</ol>

现在我们有一个方法可以将JSON对象转成我们所需要的字符串,现在我们回过头去修改我们之前定义的 "mydata" 变量,我们应当按下面去应用所写的json2string方法。

<ol class="dp-c">
<li class="alt"><span><span class="keyword"><strong><font color="#006699">var</font></strong></span><span> mydata = { </span><span class="string"><font color="#0000ff">"Name"</font></span><span>:</span><span class="string"><font color="#0000ff">"Denny"</font></span><span>, </span><span class="string"><font color="#0000ff">"Age"</font></span><span>:23, </span><span class="string"><font color="#0000ff">"Shoes"</font></span><span>:[</span><span class="string"><font color="#0000ff">"Nike"</font></span><span>,</span><span class="string"><font color="#0000ff">"Osiris"</font></span><span>,</span><span class="string"><font color="#0000ff">"Etnies"</font></span><span>] };   </span></span></li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">var</font></strong></span><span> jsonStr = </span><span class="string"><font color="#0000ff">"p="</font></span><span> + json2string(mydata);  </span>
</li>
</ol>

注意在下面我准备了"p=" 字符在我们的JSON字符串中,“p”对应于"DoWork()" 方法中的参数,当我们将参数改名为"Dude" ( 例如DoWork(Person Dude) )时,我们也必须将此处替换为"Dude="

现在我们准备好了查询字符串,我们参看到我们如何调用服务:

<ol class="dp-xml"><li class="alt"><span><span>http://www.dennydotnet.com/Service.svc/DoWork/?</span><span class="attribute"><font color="#ff0000">p</font></span><span>={ "Name":"Denny", "Age":23, "Shoes":["Nike","Osiris","Etnies"] } </span></span></li></ol>

你将接收到一个已经为URL编码处理过的值,如下:

<ol class="dp-xml"><li class="alt"><span><span>http://www.dennydotnet.com/Service.svc/DoWork/?</span><span class="attribute"><font color="#ff0000">p</font></span><span>=%7b+%22Name%22%3a%22Denny%22%2c+%22Age%22%3a23%2c+%22Shoes%22%3a%5b%22Nike%22%2c%22Osiris%22%2c%22Etnies%22%5d+%7d%3b </span></span></li></ol>

紧接着我们去调用"SendAjax()" javascript 方法,现在能够调试我们的服务并验证数据是否被传递到服务。如下图

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