HttpWebRequest和HttpWebResponse的应用

最新推荐文章于 2019-12-25 14:31:42 发布

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最新推荐文章于 2019-12-25 14:31:42 发布

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原文链接：http://www.cnblogs.com/lunawzh/p/6838046.html

本文介绍了一个简单的HTTP请求助手类的实现，包括GET和POST两种请求方式。通过配置Httpparam类设置请求头信息，如User-Agent、Accept等，并支持自定义编码方式。

创建使用类HttpHelper：

public class Httpparam
    {
        public string UserAgent { get; set; }
        public string Accept { get; set; }
        public string ContentType { get; set; }
        public string Referer { get; set; }
    }

    public class HttpHelper
    {
        //下载源码
        public static string GetString(string url, Httpparam para, Encoding encoding)
        {
            var res = (HttpWebRequest)HttpWebRequest.Create(new Uri(url));
            res.ContentType = para.ContentType;
            res.Accept = para.Accept;
            res.UserAgent = para.UserAgent;
            res.Referer = para.Referer;
            var stream = new StreamReader(res.GetResponse().GetResponseStream(), encoding);
            var result=stream.ReadToEnd();
            stream.Close();
            stream.Dispose();
            res.Abort();
            return result;
        }
        //上传数据
        public static string PostData(string url, Httpparam para, Encoding encoding,string data)
        {
            var buf = encoding.GetBytes(data);

            var res = (HttpWebRequest)HttpWebRequest.Create(new Uri(url));
            res.Method = "post";
            res.ContentType = para.ContentType;
            res.Accept = para.Accept;
            res.UserAgent = para.UserAgent;
            res.Referer = para.Referer;

            var reqstream = res.GetRequestStream();
            reqstream.Write(buf, 0, buf.Length);
            reqstream.Close();
            reqstream.Dispose();

            var stream = new StreamReader(res.GetResponse().GetResponseStream(), encoding);
            var result = stream.ReadToEnd();
            stream.Close();
            stream.Dispose();
            res.Abort();
            return result;
        }
    }