.net设置浏览器缓存和跨域的几种方法

.自定义过滤器属性
public class NoCacheAttribute : FilterAttribute, IActionFilter
{

    public void OnActionExecuted(ActionExecutedContext filterContext)
    {
        //设置浏览器缓存
        filterContext.HttpContext.Response.Cache.SetCacheability(HttpCacheability.NoCache);
        //设置接口跨域
        filterContext.HttpContext.Response.AddHeader("Access-Control-Allow-Origin","*");

    }
    public void OnActionExecuting(ActionExecutingContext filterContext)
    {
    }
}
或者
context.Response.ClearHeaders();
context.Response.AppendHeader("Access-Control-Allow-Origin","*");
string requestHeaders = context.Request.Headers["Access-Control-Request-Headers"];
context.Response.AppendHeader("Access-Control-Allow-Headers",
string.IsNullOrEmpty(requestHeaders) ? "*" : requestHeaders);
context.Response.AppendHeader("Access-Control-Allow-Methods", "POST, OPTIONS");
.web.config文件里配置
<system.webServer>
  <httpProtocol>
    <customHeaders>
      <add name="Access-Control-Allow-Methods" value="OPTIONS,POST,GET"/>
      <add name="Access-Control-Allow-Headers" value="x-requested-with"/>
      <add name="Access-Control-Allow-Origin" value="*" />
    </customHeaders>
  </httpProtocol>
</system.webServer>