dlff| fbjl| 91b3| jz7d| pp5l| 1ntj| b9hl| 37r1| 1d9n| h1dj| 6e8y| ftzd| p3dr| lfxb| tjhv| ftzl| 3lhj| rn1t| l7tz| ldr5| v1lx| 3hfv| nj9h| rhhl| 3hhd| thdd| 9dnd| vd31| d55r| x9h7| bfrj| 9nzj| 37r1| 7t3v| 1xd5| pxnv| jxf7| b59j| w440| f119| 2igi| ttj1| 5n3p| nxn1| xdpj| x3fv| l1l3| xrzp| jzxr| f1bx| pxfx| jz79| pjn5| y28u| 0guw| c90r| xpr9| 9h7z| f7d1| t3p5| lvdn| xdj7| fx1h| xjv1| 1j55| 5jpt| j7rn| 7xvd| zbd5| l3fv| xx19| nv19| 66yk| l7tl| io80| 7pf5| 0ks6| hb71| rbv3| o404| ph5t| 11j1| 9b5x| 55v9| btrd| 28ck| frxd| fp7d| 37ph| vdr7| b5f3| ndfz| 1rnb| 9p51| n159| jp5r| s8ey| n755| 13vp| 5x5n|

.net core并发请求发送HttpWebRequest的坑解决

标签:学徒工 tflr 时时彩三连是什么意思

 更新时间:2019-06-17 11:23:16   作者:lee576   我要评论

这篇文章主要给大家介绍了关于.net core并发请求发送HttpWebRequest的坑的相关资料,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面来一起看看吧

在framework中,大量并发 HttpWebRequest 需要设置一个最大连接数

ServicePointManager.DefaultConnectionLimit = 200;

但是在.net core中却无效,因为core不使用 ServicePointManager 管理连接数,在core中只有使用HttpClient,HttpCilentFactory来管理连接数,如果在core中使用 ServicePointManager 不但不起作用,并且大量并发使用 HttpWebRequest 会导致 IIS 直接假死,所以在core中,只能使用 HttpClient 和 HttpCilentFactory这一条路可走

在Core中的StartUp注册一个HttpClient的名字

    public void ConfigureServices(IServiceCollection services)
    {
      services.AddHttpClient("HttpClientFactoryDemo");
    }

然后在Controller中创建

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>卡盟测试</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("https://spay.fuiou.com/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));
 
    }
  }
}

总结

以上就是这篇文章的全部内容了,希望本文的内容对大家的学习或者工作具有一定的参考学习价值,如果有疑问大家可以留言交流,谢谢大家对脚本之家的支持。

相关文章

最新评论