来自在线WCF的空响应 - 长json字符串

时间:2013-05-02 08:30:02

标签: javascript jquery wcf cors

我有这个以JSON格式提交给WCF的对象

var j= {
                "Omschrijving": escape(encodeURI(document.getElementById('descr').value.trim())),
                "Foto" : "...", // VERY LONG STRING HERE (150 000 characters),
                "XCo": pLocation.x,
                "YCo": pLocation.y,
                "user": login,
                "Adres":escape(encodeURI(document.getElementById('map-location').innerHTML)),
                "Type": $('#meldingType').val()
            };

为了解决这个问题,已删除了foto属性。它大约有150k个字符。

这是从我的phonegapp应用程序调用WCF的请求:

 function corsRequest(j, url){
         response = "-9";   
            var xhr = createCORSRequest('POST', url);
            if (!xhr) {
                navigator.notification.alert("Gelieve een andere internetbrowser als standaard in te stellen.", null, "Fout");
                return;
            }
            // Response handlers.
            xhr.onload = function () {
                response = xhr.responseText;        
            };


            //xhr.send(JSON.stringify(j).replace(/"/g, '\''));
            var notJson = '"'+JSON.stringify(j).replace(/"/g, '\'')+'"';
            //alert(notJson);
            xhr.setRequestHeader("Content-type", "application/json");
            xhr.send(notJson);

我将此作为web.config

 <basicHttpBinding>
    <binding name="crossDomain" maxReceivedMessageSize="10485760">
      <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647"  maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
    </binding>
  </basicHttpBinding>
  <webHttpBinding>
    <binding name="crossDomain" crossDomainScriptAccessEnabled="true" maxReceivedMessageSize="10485760">
      <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647"  maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
    </binding>
  </webHttpBinding>

  [...]

  <services>
        <service name="CeviService.CeviSpotter" behaviorConfiguration="MyServiceTypeBehaviors">
            <endpoint contract="IMetadataExchange" binding="mexHttpBinding" address="mex"/>
    <endpoint address="ajaxEndpoint" binding="webHttpBinding" contract="CeviService.ICeviSpotter"  behaviorConfiguration="AjaxBehavior" bindingConfiguration="crossDomain">
      <identity>
        <dns value="localhost" />
      </identity>
    </endpoint>
        </service>
    </services>

问题在于:当我提交一个长JSON字符串(150k +字符)时,它在localhost上完美运行。它给了我成功提交应该返回的价值。但是,当Web服务联机时,我得到的响应(如果建立服务器连接或20秒后(超时)则会发出警报)为空。这很奇怪,因为响应在开始时设置为-9。如果20秒后响应仍为-9,则表示服务器超时。如果它是-1(由服务器设置),则存在服务器错误(如语法错误或其他内容)。如果为1,则命令和功能成功执行。因此它显示的警报只是空的。并且值不会提交到数据库。

现在,我做错了什么,还是因为服务器设置? (它适用于localhost,但不是我在线时)

提前致谢

编辑:WCF被try-catch包围,所以没有办法有空响应

1 个答案:

答案 0 :(得分:1)

确保在客户端和服务器web.config文件的绑定标记上正确设置了maxReceivedMessageSize属性。

服务器web.config:

<bindings>
    <basicHttpBinding>
        <binding closeTimeout="04:01:00"
         openTimeout="04:01:00" receiveTimeout="04:10:00" sendTimeout="04:01:00"
         maxBufferSize="2147483647" maxBufferPoolSize="2147483647"
         maxReceivedMessageSize="2147483647"
         messageEncoding="Text" textEncoding="utf-8">
        <readerQuotas maxDepth="32" maxStringContentLength="2147483647"
         maxArrayLength="16348" maxBytesPerRead="4096" maxNameTableCharCount="16384" />
        </binding>
    </basicHttpBinding>
</bindings>

客户端web.config:

<basicHttpBinding>
        <binding name="BasicHttpBinding_IMainService" maxReceivedMessageSize="2147483647"/>
</basicHttpBinding>