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AngularJS'所请求的资源上没有'Access-Control-Allow-Origin'标头'错误

[英]AngularJS 'No 'Access-Control-Allow-Origin' header is present on the requested resource' error

我正在使用AngularJS 1.2.20。

每当我使用$http服务从URL(不同的域/服务器)访问zip文件时,都会出现以下错误:

XMLHttpRequest cannot load http://localhost/ABC/updates.zip. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:8080' is therefore not allowed access.

我尝试在模块的配置中设置以下内容:

$httpProvider.defaults.useXDomain = true;
$httpProvider.defaults.withCredentials = true;
delete $httpProvider.defaults.headers.common["X-Requested-With"];
$httpProvider.defaults.headers.common["Accept"] = "application/json";
$httpProvider.defaults.headers.common["Content-Type"] = "application/json";

但这仍然引发错误。

我的代码段是:

$http({method: 'GET', url: paths.categoryUpdateURL}).
success(function(data, status, headers, config) {
    // this callback will be called asynchronously
    // when the response is available
    alert("download Complete")
}).
error(function(data, status, headers, config) {
    // called asynchronously if an error occurs
    // or server returns response with an error status.
    alert("error")
});

应该采取什么措施来防止这种情况?

除非服务器提供JSONP API或允许配置Access-Control-Allow-Origin响应属性,否则除非请求服务器请求ZIP文件,否则您将无能为力,因为浏览器不允许这样做。

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