使用参数从MVC控制器重定向到外部网址 [英] Redirect to external Url from MVC controller with parameters

问题描述

我希望通过传递变量将用户重定向到此链接

i want to redirect the user to this link with being able to pass variables

    public ActionResult GoogleMapAddress(string address, string Area, string city, string zipCode)
        {

           return Redirect(string.Format(" https://www.google.co.za/maps/search/{0}/ ", address + Area + city + zipCode));

        }

视图

@Html.ActionLink("Address", "GoogleMapAddress", "Orders", new { address="test", Area="test", city="test", zipCode="test" },new  {target="_blank" })

我当前使用的方法将Url链接添加到localhost链接.这给出了错误-从客户端(:)检测到潜在的危险Request.Path值."一旦删除添加的localhost链接，URL链接(google)就会起作用

The current method I have adds the Url link to the localhost link.Which gives the error- "A potentially dangerous Request.Path value was detected from the client (:)." and the url link(google) does work once I remove the added localhost link

推荐答案

正如评论中已经提到的，需要正确构建url.

As already mentioned in the comments the url needs to be properly constructed.

首先构造并编码插入的片段.

first construct and encode the inserted segment.

var segment = string.Join(" ",address, Area, city, zipCode);
var escapedSegment = Uri.EscapeDataString(segment);

然后，您使用基本格式和转义的段来构建完整的URL

You then construct the complete URL with the base format and the escaped segment

var baseFormat = "https://www.google.co.za/maps/search/{0}/";
var url = string.Format(baseFormat, escapedSegment);

并使用它进行重定向.

完整的代码看起来像这样

Complete code would look something like this

public ActionResult GoogleMapAddress(string address, string Area, string city, string zipCode) {
    var segment = string.Join(" ",address, Area, city, zipCode);
    var escapedSegment = Uri.EscapeDataString(segment);
    var baseFormat = "https://www.google.co.za/maps/search/{0}/";
    var url = string.Format(baseFormat, escapedSegment);
    return Redirect(url);
}

您甚至可以在尝试将构造的URL与 if(Uri.IsWellFormedUriString(url，UriKind.Absolute))

You could even consider validating the constructed URL before trying to use it with if (Uri.IsWellFormedUriString(url, UriKind.Absolute))

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