本篇文章給大家分享的是有關(guān)如何在.net core中使用HttpWebRequest發(fā)送并發(fā)請(qǐng)求,小編覺(jué)得挺實(shí)用的,因此分享給大家學(xué)習(xí),希望大家閱讀完這篇文章后可以有所收獲,話不多說(shuō),跟著小編一起來(lái)看看吧。

在framework中,大量并發(fā) HttpWebRequest 需要設(shè)置一個(gè)較大連接數(shù)
ServicePointManager.DefaultConnectionLimit = 200;
但是在.net core中卻無(wú)效,因?yàn)閏ore不使用 ServicePointManager 管理連接數(shù),在core中只有使用HttpClient,HttpCilentFactory來(lái)管理連接數(shù),如果在core中使用 ServicePointManager 不但不起作用,并且大量并發(fā)使用 HttpWebRequest 會(huì)導(dǎo)致 IIS 直接假死,所以在core中,只能使用 HttpClient 和 HttpCilentFactory這一條路可走
在Core中的StartUp注冊(cè)一個(gè)HttpClient的名字
public void ConfigureServices(IServiceCollection services)
{
services.AddHttpClient("HttpClientFactoryDemo");
}然后在Controller中創(chuàng)建
using System;
using System.Collections.Generic;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;
using System.Web;
using Microsoft.AspNetCore.Mvc;
namespace HttpClientFactoryDemo.Controllers
{
[Route("api/[controller]")]
[ApiController]
public class ValuesController : ControllerBase
{
private readonly IHttpClientFactory _httpClientFactory;
public ValuesController(IHttpClientFactory httpClientFactory)
{
_httpClientFactory = httpClientFactory;
}
public static string UrlEncode(string temp, Encoding encoding)
{
StringBuilder stringBuilder = new StringBuilder();
for (int i = 0; i < temp.Length; i++)
{
string t = temp[i].ToString();
string k = HttpUtility.UrlEncode(t, encoding);
if (t == k)
{
stringBuilder.Append(t);
}
else
{
stringBuilder.Append(k.ToUpper());
}
}
return stringBuilder.ToString();
}
[HttpGet]
public async Task<ActionResult> Get()
{
Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
string xmlContent = "<?xml version=\"1.0\" encoding=\"GBK\" standalone=\"yes\"?><xml><version>1</version><ins_cd>08A9999999</ins_cd><mchnt_cd>0002900F0370588</mchnt_cd><term_id></term_id><random_str>93b4efa6d0d84808a76355ff0f7a178d</random_str><sign>G1+TBpyEVwsQjeJ9X7zrObRTFtI/ItuJWEEYl3AT/9XlFd844Jv2Wb/gNVkuEVP890Tf1Ub+EaTe1qByHSu97cpQr6riuDxqw2nnjKZBZsG00C1d8070sZPf4c1hkSUfhlR2nPn+7dvIanLCjRFzTgoTQ/WtcArrL/SJIJeaXYg=</sign><order_type>ALIPAY</order_type><goods_des>卡盟測(cè)試</goods_des><goods_detail></goods_detail><addn_inf></addn_inf><mchnt_order_no>2018121302054468584629</mchnt_order_no><curr_type></curr_type><order_amt>1</order_amt><term_ip>127.0.0.1</term_ip><txn_begin_ts>20181213020544</txn_begin_ts><goods_tag></goods_tag><auth_code>288232051781304899</auth_code><sence>1</sence><reserved_sub_appid></reserved_sub_appid><reserved_limit_pay></reserved_limit_pay></xml>";
xmlContent = UrlEncode(xmlContent, Encoding.GetEncoding("GBK"));
Dictionary<string, string> nvs = new Dictionary<string, string> { { "req", xmlContent } };
Encoding encoding = Encoding.GetEncoding("GBK");
StringBuilder buffer = new StringBuilder();
int i = 0;
IDictionary<string, string> sortedParams = new SortedDictionary<string, string>(nvs);
foreach (KeyValuePair<string, string> kvp in nvs)
{
buffer.AppendFormat(i > 0 ? "&{0}={1}" : "{0}={1}", kvp.Key,
UrlEncode(kvp.Value, Encoding.GetEncoding("GBK")));
i++;
}
byte[] postBody = encoding.GetBytes(buffer.ToString());
var client = _httpClientFactory.CreateClient("HttpClientFactoryDemo");
var request = new HttpRequestMessage
{
RequestUri = new Uri("/tupian/20230522/commonQuery"),
Method = HttpMethod.Post,
Content = new ByteArrayContent(postBody),
};
request.Content.Headers.ContentType =
new MediaTypeHeaderValue("application/x-www-form-urlencoded");
return Ok(await client.SendAsync(request));
}
}
}以上就是如何在.net core中使用HttpWebRequest發(fā)送并發(fā)請(qǐng)求,小編相信有部分知識(shí)點(diǎn)可能是我們?nèi)粘9ぷ鲿?huì)見(jiàn)到或用到的。希望你能通過(guò)這篇文章學(xué)到更多知識(shí)。更多詳情敬請(qǐng)關(guān)注創(chuàng)新互聯(lián)行業(yè)資訊頻道。
文章題目:如何在.netcore中使用HttpWebRequest發(fā)送并發(fā)請(qǐng)求-創(chuàng)新互聯(lián)
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