Jquery+wcf. 基本身份验证出现问题

Question

我的服务已经在IIS中设置了基本身份验证，并且我正在尝试使用Jquery从服务中获取数据。

跨域调用已启用。

我有下面的请求标头。

Host http:\\service.com
User-Agent Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0
Accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language en-gb,en;q=0.5
Accept-Encoding gzip, deflate
Accept-Charset ISO-8859-1,utf-8;q=0.7,*;q=0.7
Connection keep-alive
Origin null
Access-Control-Request-Me... GET
Access-Control-Request-He... authorization
Pragma no-cache
Cache-Control no-cache

响应

Content-Type text/html
Server Microsoft-IIS/7.5
WWW-Authenticate Basic realm="172.27.131.5"
X-Powered-By ASP.NET
Access-Control-Allow-Orig... *
Access-Control-Allow-Head... *
Date Fri, 12 Aug 2011 08:07:29 GMT
Content-Length 1293

代码

 $.ajax({
     headers : {
        "Authorization" : "Basic TVNF3TQtU1BGMjAx6C12bVxzbW4ydHBvaW50OlF3Z5J0eSEyM6Q1"
     },
     type: "GET",
     url: url,
     contentType: "application/json; charset=utf-8",
     dataType: "json",
     success: function(data) {
      alert('ok!');
      formatData(format_type,data);
     },
     error: function(jqXHR, textStatus, errorThrown) {
          alert(textStatus + ' / ' + errorThrown);
     }
  });

我尝试设置

 beforeSend : function(xhr) {
      xhr.setRequestHeader("Authorization", "Basic " + Base64.encode(username + ':' + password));
        },

但我遇到了下一个错误：

请求头字段Authorization不被Access-Control-Allow-Headers允许

我做错了什么？

- Ievgen

---

尝试在不使用“headers”的情况下进行Ajax调用。 - John x

那么服务将如何进行身份验证？ - Ievgen

Answer 1

尝试将以下代码添加到 WCF 项目中的 global.asax 中（仅在 iis 托管时有效）：

protected void Application_BeginRequest(object sender, EventArgs e)
{
    EnableCrossDomainAjaxCall();
}

private void EnableCrossDomainAjaxCall()
{
    HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "*");

    if (HttpContext.Current.Request.HttpMethod == "OPTIONS")
    {
        HttpContext.Current.Response.AddHeader("Access-Control-Allow-Methods", "GET, POST");
        HttpContext.Current.Response.AddHeader("Access-Control-Allow-Headers", "Content-Type, Authorization, Accept");
        HttpContext.Current.Response.End();
    }
}

Jquery向WCF服务发出OPTIONS调用以检查是否允许该调用。您需要匹配确切的标头。您也可以在此处下载示例：http://sameproblemmorecode.blogspot.com/2011/10/creating-secure-restfull-wcf-service.html。

- Luuk

Answer 2

你需要在你的ajax调用中启用跨域

$.ajax({
     headers : {
        "Authorization" : "Basic TVNF3TQtU1BGMjAx6C12bVxzbW4ydHBvaW50OlF3Z5J0eSEyM6Q1"
     },
     type: "GET",
     url: url,
     crossDomain:true, <--
     xhrFields: {
        withCredentials: true
     }, 
     contentType: "application/json; charset=utf-8",
     dataType: "json",
     success: function(data) {
      alert('ok!');
      formatData(format_type,data);
     },
     error: function(jqXHR, textStatus, errorThrown) {
          alert(textStatus + ' / ' + errorThrown);
     }
  });

- Rafay

Answer 3

$.ajax({
    url: 'https://www.tejastank.com/moderator/v1/series?key='+key,
    data: myData,
    type: 'GET',
    crossDomain: true,
    dataType: 'jsonp',
    success: function() { alert("Success"); },
    error: function() { alert('Failed!'); },
    beforeSend: setHeader
});

通过将dataType参数修改为dataType:'jsonp'并添加crossDomain:true来解决Access-Control-Allow-Origin错误。

- tejas tank