核心代码(获取HTML):
#region 根据URL地址获取信息GET
      public static String GetResult(string url)
      {
           return GetResult(url, Encoding.Default);
       }
 #endregion
#region 根据URL地址获取对应编码信息
        public static String GetResult(string url, Encoding encoding)
        {
            try
            {

                var webRequest = (HttpWebRequest)WebRequest.Create(url);
                //获取响应结果 
                var webResponse = (HttpWebResponse)webRequest.GetResponse();
                //获取响应流
                Stream stream = webResponse.GetResponseStream();
                using (StreamReader streamReader = new StreamReader(stream, encoding))
                {
                    string result = String.Empty;
                    result = streamReader.ReadToEnd();
                    streamReader.Close();
                    webResponse.Close();
                    webRequest.Abort();
                    return result;
                }
            }
            catch (Exception ex)
            {
                return "-1";
                //return ex.Message.Length > 100 ? ex.Message.Substring(0, 100) : ex.Message; 
            }
        }
        #endregion
View Code

 方法调用:

string strUrl = @"http://192.168.0.155:8181/";  //获取HTML的地址
string strTemp = GetResult(strUrl, System.Text.Encoding.GetEncoding("utf-8"));

if (!strTemp.Equals("-1"))
{
strTemp = strTemp.Substring(strTemp.IndexOf("<!--begin-->"));
strTemp = strTemp.Substring(0, strTemp.IndexOf("<!--end-->"));
}
return strTemp;

 

核心代码(下载图片):

 public static void getimages(string url)
        {
            //创建一个request 同时可以配置requst其余属性
            System.Net.WebRequest imgRequst = System.Net.WebRequest.Create(url);
            //在这里我是以流的方式保存图片
            System.Drawing.Image downImage = System.Drawing.Image.FromStream(imgRequst.GetResponse().GetResponseStream());
            string dertory = string.Format(@"D:\imgfg.cn\5r\{0}\", DateTime.Now.ToString("yyyy-MM-dd"));
            string fileName = string.Format("{0}.jpg", DateTime.Now.ToString("HHmmssffff"));
            if (!System.IO.Directory.Exists(dertory))
            {
                System.IO.Directory.CreateDirectory(dertory);
            }
            downImage.Save(dertory + fileName);
            downImage.Dispose();
            //用完一定要释放
        }
View Code

 方法调用:

string strUrl = @"https://www.baidu.com/img/bd_logo1.png?qua=high&where=super";  //网络图片或者本地图片地址

 getimages(strUrl);

posted on 2018-07-17 13:17  许一朵岁月  阅读(1484)  评论(0编辑  收藏  举报