2012-09-28 39 views
6

這個話題似乎是百萬「解決方案」中的一個,有更多混合的結果。所以請讓我有點鬆懈,因爲我會試圖展示正在發生的事情,我正在使用的以及我試圖解決問題的方式。asmx web service - jQuery ajax post json(500錯誤) - CORS(Access-Control-Allow-Origin設置爲*)

我的測試環境中運行IIS6 asp.net 2.0中,我已經將它設置了

'Access-Control-Allow-Origin' * 

我也通過jQuery V1設定爲動詞的.asmx擴展

"GET,HEAD,POST,DEBUG,OPTIONS" 

。 7.2 ajax()調用我可以從服務器獲取xml文件,並POST到基本服務,該服務返回一個字符串,其預期結果跨域。所以我知道至少部分我的跨域請求正在工作。

當我開始拓展上,並使用JSON將數據發佈到服務我的問題出現

我有一個簡單的ASMX Web服務方法:

 [WebMethod] 
     [ScriptMethod(ResponseFormat = ResponseFormat.Json)] 
     public SubResponse HelloWorldX(SubRequestXX SubReq) 
     { 
      SubResponse sr = new SubResponse(); 

      sr.resultCode = "777"; 
      sr.resultMsg = "hello - " + SubReq.EmailAddress; 

      return sr; 
     } 

很簡單,並沒有太大的魔力發生在那裏,我想要做的就是傳遞'SubRequestXX'對象,並且現在只需驗證它到達並響應。

Using jQuery: 

    $.ajax({ 
     type: "POST", 
     url: "http://somedomain/subscription/MyService.asmx/HelloWorldX", 
     processData: false, 
     data: '{ "SubReq" : {"EmailAddress":"[email protected]"} }', 
     dataType: "json", 
     contentType: "application/json; charset=utf-8", 
     cache: false, 
     success: function(data, textStatus, jqXHR) { 
      ajaxSucccess3(data, textStatus, jqXHR); 
     }, 
     error: function(jqXHR, textStatus, errorThrown) { 
      console.log("Retrieve Hello Failed (AJAX Error): " + jqXHR.statusText + " | " + textStatus + " | " + errorThrown); 
     } 
    }); 
} 

也許答案就在那裏?但這裏是提琴手的RAW數據顯示,我用從頁面完全相同的JS代碼在同一個域(成功 - 結果代碼200):

REQUEST: 
    POST http://somedomain/subscription/Service.asmx/HelloWorldX HTTP/1.1 
    Accept: application/json, text/javascript, */*; q=0.01 
    Content-Type: application/json; charset=utf-8 
    X-Requested-With: XMLHttpRequest 
    Referer: http://somedomain/subscription/subscription_-cors.html 
    Accept-Language: en-us 
    Accept-Encoding: gzip, deflate 
    User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; 9LA) 
    Host: somedomain 
    Content-Length: 45 
    Connection: Keep-Alive 
    Pragma: no-cache 

    { "SubReq" : {"EmailAddress":"[email protected]"} } 

RESPONSE: 

    HTTP/1.1 200 OK 
    Date: Fri, 28 Sep 2012 16:59:15 GMT 
    Server: Microsoft-IIS/6.0 
    X-Powered-By: ASP.NET 
    Access-Control-Allow-Origin: * 
    X-AspNet-Version: 2.0.50727 
    Cache-Control: private, max-age=0 
    Content-Type: application/json; charset=utf-8 
    Content-Length: 147 

    {"d":{"__type":"SubService.DataObj.SubResponse","resultCode":"777","resultMsg":"hello - [email protected]"}} 

所以一切看起來不錯,按照我們的期望。現在,如果我採取相同的HTML/JS代碼,部署在另一臺服務器上,並提出同樣的要求(跨站點)提琴手顯示(失敗結果代碼500):

REQUEST: 
    POST http://somedomain/subscription/Service.asmx/HelloWorldX HTTP/1.1 
    Accept: */* 
    Origin: http://www.crossdomainsite.com 
    Accept-Language: en-US 
    Accept-Encoding: gzip, deflate 
    User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; 9LA) 
    Host: somedomain 
    Content-Length: 0 
    Connection: Keep-Alive 
    Pragma: no-cache 


RESPONSE: 
HTTP/1.1 500 Internal Server Error 
Date: Fri, 28 Sep 2012 16:58:56 GMT 
Server: Microsoft-IIS/6.0 
X-Powered-By: ASP.NET 
Access-Control-Allow-Origin: * 
X-AspNet-Version: 2.0.50727 
Cache-Control: private 
Content-Type: text/html; charset=utf-8 
Content-Length: 4732 

..... 

Request format is unrecognized for URL unexpectedly ending in '/HelloWorldX' 

..... 

[InvalidOperationException: Request format is unrecognized for URL unexpectedly ending in '/HelloWorldX'.] 
    System.Web.Services.Protocols.WebServiceHandlerFactory.CoreGetHandler(Type type, HttpContext context, HttpRequest request, HttpResponse response) +405961 
    System.Web.Services.Protocols.WebServiceHandlerFactory.GetHandler(HttpContext context, String verb, String url, String filePath) +212 
    System.Web.Script.Services.ScriptHandlerFactory.GetHandler(HttpContext context, String requestType, String url, String pathTranslated) +47 
    System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig) +193 
    System.Web.MapHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +93 
    System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155 

許多搜索結果顯示幾個網站的。配置更改。如果我以下內容添加到我的System.Web部分:

<webServices> 
     <protocols> 
      <add name="HttpGet"/> 
      <add name="HttpPost"/> 
     </protocols> 
    </webServices> 

然後我的請求看起來像

POST http://somedomain/subscription/Service.asmx/HelloWorldX HTTP/1.1 
Accept: */* 
Origin: http://www.crossdomainsite.ca 
Accept-Language: en-US 
Accept-Encoding: gzip, deflate 
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; 9LA) 
Host: somedomain 
Content-Length: 0 
Connection: Keep-Alive 
Pragma: no-cache 

我的回答:

HTTP/1.1 500 Internal Server Error 
Date: Fri, 28 Sep 2012 17:37:00 GMT 
Server: Microsoft-IIS/6.0 
X-Powered-By: ASP.NET 
Access-Control-Allow-Origin: * 
X-AspNet-Version: 2.0.50727 
Cache-Control: private 
Content-Type: text/plain; charset=utf-8 
Content-Length: 461 

System.InvalidOperationException: HelloWorldX Web Service method name is not valid. 
    at System.Web.Services.Protocols.HttpServerProtocol.Initialize() 
    at System.Web.Services.Protocols.ServerProtocol.SetContext(Type type, HttpContext context, HttpRequest request, HttpResponse response) 
    at System.Web.Services.Protocols.ServerProtocolFactory.Create(Type type, HttpContext context, HttpRequest request, HttpResponse response, Boolean& abortProcessing) 

所以補充說,部分我的網頁。配置做了些什麼,因爲我的結果稍有不同。但我無法辨別出什麼。

其他的解決方案,因爲我使用asp.net 2.0表明這些web配置設置,注意我已經離開這在所有上述結果如圖所示,註釋掉那些從項目創建原件:

 <httpHandlers> 
      <remove verb="*" path="*.asmx"/> 
      <!--<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>--> 
      <add path="*.asmx" verb="*" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" /> 

      <!--<add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>--> 
      <add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/> 

      <!--<add verb="GET,HEAD" path="ScriptResource.axd" validate="false" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>--> 
      <add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false"/> 
     </httpHandlers> 

所以...大問題...儘管如此,我的跨站點請求爲什麼會使用相同的代碼失敗?似乎只要請求來自另一個域,它就會在JSON上窒息。

任何幫助將不勝感激解決這個謎。我假設它是一個IIS6(服務器)設置或我的$。ajax()調用,我覺得它可能是簡單或小的東西,但我似乎無法把它放在手指上。

回答

0

我通過JSONP嘗試了一些simillar。我想我把這個解決方案放在這篇文章中。

JSONP + CORS

另一個潛在的事情是,把你的JSON作爲一個字符串轉換爲WCF服務通常不會有好下場(我知道這是不是WCF,只是說這可能是同樣的問題)。我通常這樣做:

Using jQuery: 

$.ajax({ 
    type: "POST", 
    url: "http://somedomain/subscription/MyService.asmx/HelloWorldX", 
    processData: false, 
    data: JSON.parse('{ "SubReq" : {"EmailAddress":"[email protected]"} }'), 
    dataType: "json", 
    contentType: "application/json; charset=utf-8", 
    cache: false, 
    success: function(data, textStatus, jqXHR) { 
     ajaxSucccess3(data, textStatus, jqXHR); 
    }, 
    error: function(jqXHR, textStatus, errorThrown) { 
     console.log("Retrieve Hello Failed (AJAX Error): " + jqXHR.statusText + " | " + textStatus + " | " + errorThrown); 
    } 
}); 
} 

JSON.parse的使用也會捕獲任何不良的JSON。

希望這能解決您的問題。