如何在Refit中禁用urlencoding get-params？

问题描述

我将Refit用于RestAPI。
我需要创建相同的查询字符串 api / item？c [] = 14& c [] = 74

I use Refit for RestAPI.I need create query strings same api/item?c[]=14&c[]=74

在改装界面中，我创建了方法

In refit interface I created method

[Get("/item")]
Task<TendersResponse> GetTenders([AliasAs("c")]List<string> categories=null);

并创建CustomParameterFormatter

And create CustomParameterFormatter

string query = string.Join("&c[]=", values);

CustomParameterFormatter生成的字符串 14& c [] = 74

CustomParameterFormatter generated string 14&c[]=74

但是要调整编码参数并生成url api / item？c％5B％5D = 14％26c％5B％5D％3D74

But Refit encoded parameter and generated url api/item?c%5B%5D=14%26c%5B%5D%3D74

如何禁用此功能？

推荐答案

首先您的api服务器能够解析以下内容吗？
api / item？c％5B％5D = 14％26c％5B％5D％3D74

First of all was your api server able to parse the follow?api/item?c%5B%5D=14%26c%5B%5D%3D74

编码对于避免将代码注入到服务器非常有用。

Encoding is great for avoiding code injection to your server.

这是对 Refit 的看法，即应该对uris进行编码，

This is something Refit is a bit opinionated about, i.e uris should be encoded, the server should be upgraded to read encoded uris.

但这显然应该是 Refit 中的选择设置，但事实并非如此。

But this clearly should be a opt-in settings in Refit but it´s not.

因此，您目前可以使用DelegatingHandler来做到这一点：

So you can currently can do that by using a DelegatingHandler:

/// <summary>
/// Makes sure the query string of an <see cref="System.Uri"/>
/// </summary>
public class UriQueryUnescapingHandler : DelegatingHandler
{   
    public UriQueryUnescapingHandler()
        : base(new HttpClientHandler()) { }
    public UriQueryUnescapingHandler(HttpMessageHandler innerHandler)
        : base(innerHandler)
    { }

    protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
    {
        var uri = request.RequestUri;
        //You could also simply unescape the whole uri.OriginalString
        //but i don´t recommend that, i.e only fix what´s broken
        var unescapedQuery = Uri.UnescapeDataString(uri.Query);

        var userInfo = string.IsNullOrWhiteSpace(uri.UserInfo) ? "" : $"{uri.UserInfo}@";
        var scheme = string.IsNullOrWhiteSpace(uri.Scheme) ? "" : $"{uri.Scheme}://";

        request.RequestUri = new Uri($"{scheme}{userInfo}{uri.Authority}{uri.AbsolutePath}{unescapedQuery}{uri.Fragment}");
        return base.SendAsync(request, cancellationToken);
    }
}


Refit.RestService.For<IYourService>(new HttpClient(new UriQueryUnescapingHandler()))

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