在Access-Control-Request-Headers下添加$ http标头

时间:2015-12-14 10:17:33

标签: angularjs ajax xmlhttprequest

每当我尝试向我的$ http请求添加自定义请求标头时,标头都不会显示在请求中,而是Access-Control-Request-Headers类似Access-Control-Request-Headers:accept, testHeader 请参阅以下chrome的网络选项卡中的输出:

Request Headers: 
    OPTIONS /v/xyx/abc/query?q=SELECT%20duration%20FROM%20TimeTable HTTP/1.1
    Host: example.com
    Connection: keep-alive
    Access-Control-Request-Method: GET
    Origin: http://localhost
    User-Agent: XXXXXXXX Chrome XXXXXXX
    Access-Control-Request-Headers: accept, testHeader
    Accept: */*
    Referer: http://localhost/test/
    Accept-Encoding: gzip, deflate, sdch
    Accept-Language: en-US,en;q=0.8

然而,我期待的是:

Request Headers: 
    OPTIONS /v/xyx/abc/query?q=SELECT%20duration%20FROM%20TimeTable HTTP/1.1
    Host: example.com
    Connection: keep-alive
    Access-Control-Request-Method: GET
    Origin: http://localhost
    User-Agent: XXXXXXXX Chrome XXXXXXX
    Accept: application/json
    testHeader: zdhfguwe87fg8378287efijb8
    Referer: http://localhost/test/
    Accept-Encoding: gzip, deflate, sdch
    Accept-Language: en-US,en;q=0.8

如何防止这种情况发生并在Request header下显示标题?

请参阅Angularjs中我所遵循的$ http服务的config

//***TRIED BOTH OF THESE: 
//***TRY#1 $http.get(url, {headers:{"Accept": "application/json", "testHeader": "zdhfguwe87fg8378287efijb8"}}).then(.......
//***TRY#2
      $http({
        method: 'GET',
        url: url,
        headers: {
          "Accept": "application/json",
          "testHeader": "zdhfguwe87fg8378287efijb8"
        }
      })
      .then(
        function(){
          //success
          console.log(arguments);
        }, function(){
          //fail
          console.log(arguments);
        });

2 个答案:

答案 0 :(得分:5)

这是预期的行为,作为CORS-preflight的一部分,这是一个OPTIONS请求。一旦此请求成功,浏览器将使用自定义标头触发实际的GET请求,因为服务器已接受它们。

对于CORS请求,默认情况下仅批准一组有限的标头,因此要添加其他标头(包括您的自定义标头),CORS预检请求需要向服务器请求Access-Control-Request-Headers HTTP标头的权限。

请参阅:https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS#Preflighted_requests

答案 1 :(得分:4)

我花了3个小时来搜索fxxking答案。 基本上它很简单,只需让愚蠢的服务器接受自定义标题。

我所做的是将这些添加到.htaccess

<IfModule mod_headers.c>
        Header add Access-Control-Allow-Origin "*"
        Header add Access-Control-Allow-Methods "POST, GET, OPTIONS, DELETE, PUT"
        Header add Access-Control-Allow-Headers "origin, x-requested-with, content-type, x-custom-header-here"
</IfModule>

现在它允许服务器(API)接受来自任何地方的ajax请求,使用大多数方法以及任何自定义标头或标头。

它将清除错误消息“预检响应中的Access-Control-Allow-Headers不允许请求头字段内容类型。”#39;

欺骗所有这些愚蠢的规则制定者!