Asp.net core 学习笔记 (操作 url and query params)

时间：2023-03-09 19:03:00
Asp.net core 学习笔记 (操作 url and query params)

更新 :2018-7-25

直接添加 query string.

var resetPasswordLink = QueryHelpers.AddQueryString($"{Request.Scheme}://{Request.Host.Value}{forgotPasswordData.resetPasswordUrl}", "token", token);

refer : https://benjii.me/2017/04/parse-modify-query-strings-asp-net-core/

build-in 的功能哦.

using Microsoft.AspNetCore.Http.Extensions;

using Microsoft.AspNetCore.WebUtilities;

public IActionResult About()

{

    string currentFullUrl = $"{Request.Scheme}://{Request.Host}{Request.Path}{Request.QueryString}";

    var uri = new Uri(currentFullUrl);

    var baseUri = uri.GetComponents(UriComponents.Scheme | UriComponents.Host | UriComponents.Port | UriComponents.Path, UriFormat.UriEscaped);

    var query = QueryHelpers.ParseQuery(uri.Query);

    var items = query.SelectMany(x => x.Value, (col, value) => new KeyValuePair<string, string>(col.Key, value)).ToList();

    var pageItem = items.FirstOrDefault(i => i.Key == "page"); // 是可以有多个的哦.

    if (pageItem.Key != null) // 判断是否有

    {

        int page = Convert.ToInt32(pageItem.Value);

    }

    items.RemoveAll(x => x.Key == "key");

    items.RemoveAll(x => x.Key == "key" && x.Value == "value");

    var qb = new QueryBuilder(items);

    qb.Add("newKey", "newValue");

    var newUrl = baseUri + qb.ToQueryString();

    return View();

}

part 2

UriBuilder uriBuilder = new UriBuilder();

uriBuilder.Scheme = Request.Scheme;

uriBuilder.Host = Request.Host.Host;

if (Request.Host.Port.HasValue)

{

    uriBuilder.Port = Request.Host.Port.Value;

}

uriBuilder.Path = forgotPasswordData.resetPasswordPath;

var queryBuilder = new QueryBuilder();

queryBuilder.Add("token", token);

uriBuilder.Query = queryBuilder.ToString();

var url = uriBuilder.ToString();

以上

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