Question

我的服务使用IIS中的基本身份验证设置进行保护，我尝试使用Jquery从服务中获取数据。

启用跨域调用。

我有下一个请求标题

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);
     }
  });

我也尝试设置

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

但我有下一个错误：

请求标头字段Access-Control-Allow-Headers

不允许授权

我做错了什么？

Answer 1

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

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发出对WCF服务的OPTIONS调用，以检查是否允许调用。你必须匹配确切的标题。您也可以在此处下载示例：http://sameproblemmorecode.blogspot.com/2011/10/creating-secure-restfull-wcf-service.html。

Answer 2

您需要在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);
     }
  });

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
});

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

jQuery的+ WCF。基本身份验证问题

3 个答案: