一个HttpWebRequest工具类

 

using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using System.Net;

using System.Text;





public class HttpRequestHelper

{

    /// <summary>

    /// 提交数据到某网页

    /// </summary>

    public static string PostToUrl(string requestUrl, byte[] byteArrayPost, Encoding encoding)

    {

        string stringResponse = "";

        HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(requestUrl);

        webRequest.Method = "POST";

        webRequest.ContentType = "application/x-www-form-urlencoded";

        webRequest.ContentLength = byteArrayPost.Length;

        webRequest.CookieContainer = new CookieContainer();

        webRequest.Credentials = CredentialCache.DefaultCredentials;



        Stream newStream = webRequest.GetRequestStream();

        //写入参数

        newStream.Write(byteArrayPost, 0, byteArrayPost.Length);

        newStream.Close();



        WebResponse webResponse = webRequest.GetResponse();



        StreamReader responseStream = new StreamReader(webResponse.GetResponseStream(), encoding);

        stringResponse = responseStream.ReadToEnd();

        webResponse.Close();

        responseStream.Close();

        return stringResponse;

    }



    /// <summary>

    /// 提交数据到某网页

    /// </summary>

    public static string GetToUrl(string requestUrl, Encoding encoding)

    {



        string stringResponse = "";

        HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(requestUrl);

        webRequest.Method = "Get";

        webRequest.ContentType = "application/x-www-form-urlencoded";



        webRequest.CookieContainer = new CookieContainer();

        webRequest.Credentials = CredentialCache.DefaultCredentials;

        WebResponse webResponse = webRequest.GetResponse();



        StreamReader responseStream = new StreamReader(webResponse.GetResponseStream(), encoding);

        stringResponse = responseStream.ReadToEnd();

        webResponse.Close();

        responseStream.Close();

        return stringResponse;

    }

}