HttpWebRequest请求远程地址获取返回消息
/// <summary>
/// 请求远程Api获取响应返回字符串
/// </summary>
/// <param name="apiUrl">Api地址</param>
/// <param name="parameters">传递参数键值对</param>
/// <param name="contentType">内容类型默认application/x-www-form-urlencoded</param>
/// <param name="methord">请求方式默认POST</param>
/// <param name="timeout">超时时间默认300000</param>
/// <returns>响应字符串</returns>
static public object GetHttpWebResponseReturnString(string apiUrl, Dictionary<string, object> parameters, string contentType = "application/x-www-form-urlencoded", string methord = "POST", int timeout = )
{
string result = string.Empty;
string responseText = string.Empty;
try
{
if (string.IsNullOrEmpty(apiUrl))
{
return DNTRequest.GetResultJson(false, "请求apiURl为空", null);
} StringBuilder postData = new StringBuilder();
if (parameters != null && parameters.Count > )
{
foreach (var p in parameters)
{
if (postData.Length == )
{
postData.AppendFormat("{0}={1}", p.Key, p.Value);
}
else
{
postData.AppendFormat("&{0}={1}", p.Key, p.Value);
}
}
} ServicePointManager.DefaultConnectionLimit = int.MaxValue; HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(apiUrl);
myRequest.Proxy = null;
myRequest.Timeout = timeout;
myRequest.ServicePoint.MaxIdleTime = ;
if (!string.IsNullOrEmpty(contentType))
{
myRequest.ContentType = contentType;
}
myRequest.ServicePoint.Expect100Continue = false;
myRequest.Method = methord;
byte[] postByte = Encoding.UTF8.GetBytes(postData.ToString());
myRequest.ContentLength = postData.Length; using (Stream writer = myRequest.GetRequestStream())
{
writer.Write(postByte, , postData.Length);
} using (HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse())
{
using (StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8))
{
responseText = reader.ReadToEnd();
}
}
if (!string.IsNullOrEmpty(responseText))
{
result = responseText;
}
else
{
result = "远程服务无响应，请稍后再试";
}
}
catch (Exception ex)
{
Log.Error(ex.Message);
result = "请求异常，请稍后再试";
}
return result;
}