动静分离跨域自定义请求头部信息

最新推荐文章于 2022-03-22 10:35:50 发布

zhangdaoli888

最新推荐文章于 2022-03-22 10:35:50 发布

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分类专栏： C#设计分类

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环境：Asp.net mvc 4 wepapi ，JQuery 1.9.1

1.webapi中Web.config配置项
自定义header项：customHeaderName
<httpProtocol>
      <customHeaders>
        <add name="Access-Control-Allow-Methods" value="OPTIONS,POST,GET" />
        <add name="Access-Control-Allow-Headers" value="x-requested-with,content-type,customHeaderName" />
        <add name="Access-Control-Allow-Origin" value="*" />   --可使用固定的域名
      </customHeaders>

2.WEBAPI端过滤器代码并在WebApiConfig中注册config.Filters.Add(new ValidationCustomHeaderFilter());
public class ValidationCustomHeaderFilter : ActionFilterAttribute
    {
        public override void OnActionExecuting(System.Web.Http.Controllers.HttpActionContext actionContext)
        {

            if (actionContext.ActionDescriptor.ActionName == "Login" || actionContext.ActionDescriptor.ActionName == "Logout")
            {
                base.OnActionExecuting(actionContext);
                return;
            }
            var request = actionContext.Request;
            if (request.Method == HttpMethod.Options)
            {
                base.OnActionExecuting(actionContext);
                return;
            }

            string customHeaderName = string.Empty;

            if (request.Headers.Contains("CustomHeaderName"))
            {
                customHeaderName = HttpUtility.UrlDecode(request.Headers.GetValues("customHeaderName").FirstOrDefault());
            }

            if (string.IsNullOrEmpty(customHeaderName))
            {
                actionContext.Response = new HttpResponseMessage { Content = new StringContent("自定义Header不能为空") };
                return;
            }
            try
            {
                bool validateFlag = ValidationData(customHeaderName);
                if (validateFlag)
                {
                    actionContext.Response = new HttpResponseMessage { Content = new StringContent("验证失败") };
                    return;
                }
            }
            catch (Exception ex)
            {
                actionContext.Response = new HttpResponseMessage { Content = new StringContent("验证异常："+ex.Message) };
                return;
            }

base.OnActionExecuting(actionContext);
}

        private bool ValidationData(string customHeaderName)
        {
            throw new NotImplementedException();
        }

}
3.Action需要添加[HttpOptions]

也可以在Global中加上事件

protected void Application_BeginRequest(object sender, EventArgs e)
        {
            var curContext = HttpContext.Current;
            if (curContext.Request.HttpMethod == "OPTIONS")
            {
                curContext.Response.End();
            }
        }
4.客户端代码
$(function () {

            //全局设置，
   //注意：中文需要使用encodeURI否则不生效
            $.ajaxSetup({
                //方案一
                //headers: { "CustomHeaderName": encodeURI(CustomHeaderName)}
                //方案二
                beforeSend: function (xhr, settings) {
                    xhr.setRequestHeader("CustomHeaderName", encodeURI(customHeaderValue));
                }
            })

$.ajax({

                type: "get",
                url: 'http://localhost:21774/Values/Get?Id=888',
                dataType: 'json',
                //单个方法中
                //方案一
                //headers: { "CustomHeaderName": encodeURI(CustomHeaderName)},
                //方案二
                //beforeSend: function (xhr, settings) {
                //    xhr.setRequestHeader("CustomHeaderName", encodeURI(customHeaderValue));
                //},
                success: function (data) {
                    if (data.IsSuccess) {
                        alert("data success");
                    } else {
                        alert("data error");
                    }
                },
                error: function (err) {
                    alert(err.statusText);
                }
            })
        })