angularjs – 请求的资源上没有“Access-Control-Allow-Origin”标头.响应具有HTTP状态代码401

2019年7月27日 189次阅读

我使用angular $http调用跨doamin REST Web服务( Spring).请在下面找到代码.

$http({    
url: ' http://xxx.yyy.zzz:8080/..../sponsors',
method: 'GET',
   headers: {  'Token' : 'abc'  }
}).success(function(sponsors){
      $scope.sponsorList = sponsors;
}).error(function(sponsors){
       alert('failed to get sponsors')
});

我收到以下错误

“对预检请求的响应未通过访问控制检查：请求的资源上没有’Access-Control-Allow-Origin’标头.”

Restful webservices部署在Tomcat-8上.

我在tomcat / conf / web.xml中添加了一个CORS过滤器,如下所示.

<filter>
  <filter-name>CorsFilter</filter-name>
  <filter-class>org.apache.catalina.filters.CorsFilter</filter-class>
</filter>
<filter-mapping>
  <filter-name>CorsFilter</filter-name>
  <url-pattern>/*</url-pattern>
</filter-mapping>

即使我得到同样的错误.

任何人都可以帮我解决这个问题吗？我错过了客户端的任何标题吗？还有什么需要在服务器端完成吗？

提前致谢

最佳答案 这将基于此 link帮助您

<filter>
  <filter-name>CorsFilter</filter-name>
  <filter-class>org.apache.catalina.filters.CorsFilter</filter-class>
  <init-param>
    <param-name>cors.allowed.origins</param-name>
    <param-value>*</param-value>
  </init-param>
  <init-param>
    <param-name>cors.allowed.methods</param-name>
    <param-value>GET,POST,HEAD,OPTIONS,PUT</param-value>
  </init-param>
  <init-param>
    <param-name>cors.allowed.headers</param-name>
    <param-value>Content-Type,X-Requested-With,accept,Origin,Access-Control-Request-Method,Access-Control-Request-Headers</param-value>
  </init-param>
  <init-param>
    <param-name>cors.exposed.headers</param-name>
    <param-value>Access-Control-Allow-Origin,Access-Control-Allow-Credentials</param-value>
  </init-param>
  <init-param>
    <param-name>cors.support.credentials</param-name>
    <param-value>true</param-value>
  </init-param>
  <init-param>
    <param-name>cors.preflight.maxage</param-name>
    <param-value>10</param-value>
  </init-param>
</filter>
<filter-mapping>
  <filter-name>CorsFilter</filter-name>
  <url-pattern>/*</url-pattern>
</filter-mapping>
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