C# http Post与Get方法控制继电器

Posted 2020-08-10

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.IO;
using SendNote;
namespace NetworkRelay//此命名空间关于网络继电器
{
class NetworkRelayControl//网络继电器控制类
{
/* static void Main(string[] args)
{


string resultControl = "relay4=off&relay8=off";

while(resultControl!="$")
{
resultControl = Console.ReadLine();
HttpStatusCode stat = postHttpCMD("admin", "12345678", "192.168.1.166", resultControl, 2000);//发送控制命令
string result=getHttpStat("admin", "12345678", "192.168.1.166", 2000);//读取控制状态
string[] Resultsplite= result.Split(new char[] { ‘&‘ });//状态拆分
for (int i = 0; i < Resultsplite.Length; i++)
{
Console.WriteLine(Resultsplite[i]);
} 
}


}
* */
#region 采用post方法发送命令控制网络继电器
public static HttpStatusCode postHttpCMD(string username, string pswd, string ip, string postDataStr,int timeout)
{
HttpStatusCode result=HttpStatusCode.ExpectationFailed;
/*username为用户名
* pswd为密码
* url为post请求地址
* postDataStr为发送数据"relay1=on&relay2=off&relay3=on&relay4=off&relay5=on&relay6=on&relay7=off&relay8=on"表示继电器1：8的开关状态
* MsgEncode为字节编码
*timeout为http超时时间
*return 返回状态代码
*/
if (string.IsNullOrEmpty(ip))
{
LogHelper.WriteLog(typeof(NetworkRelayControl), "请求数据异常"+"时间" + DateTime.Now.ToString());
throw new ArgumentNullException("Url");

}
try
{

string Url = "http://" + ip + "/relay.cgi";//访问继电器的URL
LogHelper.WriteLogInfo(typeof(NetworkRelayControl), "访问地址为" + Url +"时间"+ DateTime.Now.ToString());
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);//创建url连接
request.PreAuthenticate = true;
NetworkCredential net = new NetworkCredential(username, pswd);//添加用户名与密码
request.Credentials = net;
byte[] data = Encoding.UTF8.GetBytes(postDataStr);
request.Method = "POST";//设置请求方法
request.ContentType = "application/x-www-form-urlencoded";//请求格式
request.Timeout = timeout;//设置超时时间
Stream reqStream = request.GetRequestStream();
reqStream.Write(data, 0, data.Length);//把数据写入请求的数据流
HttpWebResponse response = (HttpWebResponse)request.GetResponse();//获取请求返回对象
reqStream.Close();//关闭请求的输入流
result = response.StatusCode;
LogHelper.WriteLogInfo(typeof(NetworkRelayControl), "服务器状态代码为" + result + "时间" + DateTime.Now.ToString());
request.Abort();//释放请求资源
}
catch (HttpListenerException e)
{
LogHelper.WriteLog(typeof(NetworkRelayControl), "Http异常,异常信息为" + e.Message + "时间" + DateTime.Now.ToString());
}
catch (UriFormatException e)
{
LogHelper.WriteLog(typeof(NetworkRelayControl), "Uri异常,异常信息为" + e.Message + "时间" + DateTime.Now.ToString());
}
catch (Exception e)
{
LogHelper.WriteLog(typeof(NetworkRelayControl), "请求异常,异常信息为" + e.Message + "时间" + DateTime.Now.ToString());
}
return result;

}
#endregion

#region 采用GET方法获取网络继电器的状态
public static string getHttpStat(string username,string pswd,string ip,int timeout)//使用get方法获取继电器的相关状态
{
/*
*username为用户名 
* pswd 为用户密码
* ip 为ip地址
* return 字符串 relay1....8=on/off
*/
string result = String.Empty;
string url = "http://"+ip +"/relaystat.cgi";
LogHelper.WriteLogInfo(typeof(NetworkRelayControl), "访问地址为" + url + "时间" + DateTime.Now.ToString());
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);//创建url连接
request.PreAuthenticate = true;
NetworkCredential net = new NetworkCredential(username, pswd);//添加用户名与密码
request.Credentials = net;
request.ContentType = "text/html;charset=UTF-8";//请求类型
request.Method = "GET";//请求方法
request.Timeout = timeout;//设置请求超时时间
HttpWebResponse response = (HttpWebResponse)request.GetResponse();//获取返回对象
if(response.StatusCode.Equals(HttpStatusCode.OK))
{
StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding("utf-8"));
result = reader.ReadToEnd();//读取返回的数据
reader.Close();//关闭流
}
request.Abort();//释放请求资源
}catch(Exception e)
{
LogHelper.WriteLog(typeof(NetworkRelayControl),"GET方法发生异常,异常信息为" + e.Message + " 时间：" + DateTime.Now.ToString());
}
return result;
}
#endregion
}
}

 

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