从我控制的远程服务器获取json时遇到问题。我有2个Web应用程序,一个服务数据并在端口3311上运行,另一个请求数据,正在端口5000上运行。
使用jquery进行以下工作:
$.ajax({
url: "http://localhost:3311/get-data",
type: 'GET',
dataType: 'json',
beforeSend: function(xhr) {
xhr.setRequestHeader("x-some-header", "some-value");
}
})
.done(function(data) {
$rootScope.$apply(function() {d.resolve(data); });
})
.fail(function(data) {
$rootScope.$apply(function() {d.reject(data); });
});
使用angular
尝试相同的get请求时$http
.get("http://localhost:3311/get-data", { headers: {"x-some-header": "some-value"} })
.success(function(data) { d.resolve(data);})
.error(function(data) { d.reject(data); });
我收到错误
Origin http://localhost:5000 is not allowed by Access-Control-Allow-Origin.
控制台日志显示OPTIONS请求返回HTTP200后发生错误
OPTIONS http://localhost:3311//get-data 200 (OK) angular.min.js:99
(anonymous function) angular.min.js:99
l angular.min.js:95
m angular.min.js:94
(anonymous function) app.js:78
b.extend.each jquery-1.9.1.min.js:3
b.fn.b.each jquery-1.9.1.min.js:3
(anonymous function) app.js:76
d angular.min.js:28
instantiate angular.min.js:28
(anonymous function) angular.min.js:52
updateView angular-ui-states.js:892
e.$broadcast angular.min.js:90
transition angular-ui-states.js:324
h angular.min.js:77
(anonymous function) angular.min.js:78
e.$eval angular.min.js:88
e.$digest angular.min.js:86
e.$apply angular.min.js:88
e angular.min.js:94
o angular.min.js:98
s.onreadystatechange angular.min.js:99
并且从OPTIONS请求返回的标头是
HTTP/1.1 200 OK
Cache-Control: private
Content-Type: text/plain
Server: Microsoft-IIS/8.0
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: GET, POST, OPTIONS
Access-Control-Allow-Headers: Content-Type, Accept, X-Requested-With, x-some-header
X-AspNet-Version: 4.0.30319
X-SourceFiles: =?UTF-8?B?....
X-Powered-By: ASP.NET
Date: Tue, 21 May 2013 01:52:37 GMT
Content-Length: 0
答案 0 :(得分:51)
这可能是由于Angular的默认行为包含请求标头'X-Requested-With'
,这可能会导致CORS出现问题。通过从跨域请求中删除标头see v1.1.1 bug fixes,修复了v 1.1.1(不稳定分支 - https://github.com/angular/angular.js/issues/1004)。
很容易删除标题并使其在1.0分支上运行。以下行将删除应用中$ http服务完成的所有请求(不仅仅是CORS)的标题:
yourModule
.config(function($httpProvider){
delete $httpProvider.defaults.headers.common['X-Requested-With'];
});
<强>更新强> 一点点警告 - Angular(比如jQuery)不支持IE9的CORS。 IE10是第一款支持CORS的IE浏览器。这篇博文描述了在某些条件下如何在IE8 / IE9中获得CORS支持,但它不适用于Angular $ http服务:http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx
答案 1 :(得分:2)
web.config
<system.webServer>
<httpProtocol>
<customHeaders>
<add name="Access-Control-Allow-Origin" value="*" />
</customHeaders>
</httpProtocol>
</system.webServer>
答案 2 :(得分:0)
上面的答案解决了这个问题。
<httpProtocol>
<customHeaders>
<add name="Access-Control-Allow-Origin" value="*" />
</customHeaders>
</httpProtocol>
当HTML页面使用如下服务调用角度控制器时:
$http.get(dataUrl).success(function (data) {
$scope.data.products = data;
})
.error(function (error) {
$scope.data.error = error;
});
答案 3 :(得分:0)
必须在服务器端设置请求的标头。 设置此
有很多种方法1.One可以
<filter>
<filter-name>ResponseFilter</filter-name>
<filter-class>org.apache.catalina.filters.CorsFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>ResponseFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
2.独立于服务器,您可以开发一个可以作为init参数传递给jersey servlet的自定义类
com.sun.jersey.spi.container.ContainerResponseFilters
helpers.TestCorpsFilter
enter code here
`public class TestCorpsFilter实现了ContainerResponseFilter {
@Override
public ContainerResponse filter(ContainerRequest arg0, ContainerResponse arg1) {
ResponseBuilder resp = Response.fromResponse(arg1.getResponse());
resp.header("Access-Control-Allow-Origin", "*").header("Access-Control-Allow-Methods",
"GET, POST, OPTIONS");
String requestHeader = arg0.getHeaderValue("Access-Control-Request-Headers");
if (requestHeader != null && !requestHeader.equals("")) {
resp.header("Access-Control-Allow-Headers", requestHeader);
}
arg1.setResponse(resp.build());
return arg1;
}