你那里下雨了吗？

南方地区出现入汛以来最强降雨天气，强降雨落区在江南中北部至长江沿江之间南北摆动。所以你们那里下雨了吗？

说到下雨我们就会关注下每个地区的降水量。那么我们今天就通过大数据来分析下降水量。

说到python,很多人学习python，掌握了基本语法过后，不知道在哪里寻找案例上手。还有很多已经做案例的人，却不知道如何去学习更加高深的知识。那么我们今天就以这个降雨量数据的获取为例，分享下python的学习示例。

// 要访问的目标页面
string targetUrl = "http://www.cma.gov.cn/";


// 代理服务器(产品官网 www.16yun.cn)
string proxyHost = "http://t.16yun.cn";
string proxyPort = "31111";

// 代理验证信息
string proxyUser = "username";
string proxyPass = "password";

// 设置代理服务器
WebProxy proxy = new WebProxy(string.Format("{0}:{1}", proxyHost, proxyPort), true);


ServicePointManager.Expect100Continue = false;

var request = WebRequest.Create(targetUrl) as HttpWebRequest;

request.AllowAutoRedirect = true;
request.KeepAlive = true;
request.Method    = "GET";
request.Proxy     = proxy;

//request.Proxy.Credentials = CredentialCache.DefaultCredentials;

request.Proxy.Credentials = new System.Net.NetworkCredential(proxyUser, proxyPass);

// 设置Proxy Tunnel
// Random ran=new Random();
// int tunnel =ran.Next(1,10000);
// request.Headers.Add("Proxy-Tunnel", String.valueOf(tunnel));


//request.Timeout = 20000;
//request.ServicePoint.ConnectionLimit = 512;
//request.UserAgent = "Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.82 Safari/537.36";
//request.Headers.Add("Cache-Control", "max-age=0");
//request.Headers.Add("DNT", "1");


//String encoded = System.Convert.ToBase64String(System.Text.Encoding.GetEncoding("ISO-8859-1").GetBytes(proxyUser + ":" + proxyPass));
//request.Headers.Add("Proxy-Authorization", "Basic " + encoded);

using (var response = request.GetResponse() as HttpWebResponse)
using (var sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
{
    string htmlStr = sr.ReadToEnd();
}
如果出现Section=ResponseStatusLine 异常