/// <summary>
/// Builds the request message serializing data.
/// </summary>
/// <param name="method">HTTP method to use when making the request.</param>
/// <param name="url">URL to send request message.</param>
/// <param name="data">Object containing data to be sent.</param>
/// <param name="headers">Headers of request message.</param>
/// <param name="options">Advanced request options. See <see cref="HttpRequestOptions"/> for more details.</param>
/// <returns>The <see cref="HttpRequestMessage"/> object.</returns>
private HttpRequestMessage BuildRequestMessage(HttpMethodEnum method, string url, object data, NameValueCollection headers, HttpRequestOptions options)
{
var requestMessage = new HttpRequestMessage(new HttpMethod(method.ToString()), url)
{
Content = Utils.CreateHttpContent(data, options)
};
SetRequestHeaders(requestMessage, headers);
return(requestMessage);
}
private bool Send <TReq, TResp>(TReq req, string portalUrl, out TResp resp, WebHeaderCollection headers, HttpMethodEnum method)
where TReq : IReqBase
where TResp : IRespBase
{
string reqJson = JsonConvert.SerializeObject(req);//如果请求体为对象，则需转换成json语句
string returnJson = null;
returnJson = SendHttpRequest(portalUrl, reqJson, headers, method.ToString());
resp = JsonConvert.DeserializeObject <TResp>(returnJson);
//入库
return(resp != null);
}
private static HttpWebRequest CreateHttpRequest(string url, HttpMethodEnum method, int timeout = 5)
{
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
if (request != null)
{
request.Method = method.ToString();
//request.ContentType = "application/json; charset=UTF-8";
request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.135 Safari/537.36";
request.Timeout = 3000;
request.ServicePoint.Expect100Continue = false;
}
return(request);
}
public Uri GetUri(Uri baseUrl, string route, HttpMethodEnum method)
{
if (!route.EndsWith("/"))
{
route = route + "/";
}
switch (method)
{
case HttpMethodEnum.Create:
return(new Uri(baseUrl, route + "post"));
case HttpMethodEnum.Get:
return(new Uri(baseUrl, route + "get/"));
case HttpMethodEnum.DeleteByPut:
return(new Uri(baseUrl, route + "put"));
case HttpMethodEnum.Update:
return(new Uri(baseUrl, route + "put"));
default:
return(new Uri(baseUrl, route + method.ToString().ToLower()));
}
}
/// <summary>
/// 调用远程地址
/// </summary>
/// <param name="url">地址</param>
/// <param name="method">请求方式</param>
/// <param name="postdata">Post数据</param>
/// <param name="timeout">超时秒数</param>
/// <param name="proxy">代理</param>
/// <param name="settings">jsonSerializerSettings</param>
/// <returns>远程方法返回的内容</returns>
public static async Task <string> CallAPIAsync(
string url,
HttpMethodEnum method = HttpMethodEnum.GET,
IDictionary <string, string> postdata = null,
int?timeout = null,
string proxy = null,
JsonSerializerSettings settings = null
)
{
if (string.IsNullOrEmpty(url))
{
throw new ArgumentNullException(nameof(url));
}
// 新建http请求
var request = WebRequest.Create(url) as HttpWebRequest;
// 如果配置了代理，则使用代理
if (string.IsNullOrEmpty(proxy) == false)
{
request.Proxy = new WebProxy(proxy);
}
request.Method = method.ToString();
// 如果是Post请求，则设置表单
if (method == HttpMethodEnum.POST || method == HttpMethodEnum.PUT)
{
request.ContentType = "application/x-www-form-urlencoded; charset=utf-8";
if (postdata == null || postdata.Count == 0)
{
request.Headers[HttpRequestHeader.ContentLength] = "0";
}
}
request.Headers[HttpRequestHeader.UserAgent] = DEFAULT_USER_AGENT;
// 设置超时
if (timeout.HasValue)
{
request.ContinueTimeout = timeout.Value;
}
request.CookieContainer = _cookieContainer;
// 填充表单数据
if (!(postdata == null || postdata.Count == 0))
{
var buffer = new StringBuilder();
var i = 0;
foreach (string key in postdata.Keys)
{
if (i > 0)
{
buffer.AppendFormat("&{0}={1}", key, postdata[key]);
}
else
{
buffer.AppendFormat("{0}={1}", key, postdata[key]);
}
i++;
}
var data = Encoding.UTF8.GetBytes(buffer.ToString());
using (var stream = await request.GetRequestStreamAsync())
{
stream.Write(data, 0, data.Length);
}
}
var res = await request.GetResponseAsync();
var wsp = (HttpWebResponse)res;
if (wsp.Cookies != null && wsp.Cookies.Count > 0)
{
_cookieContainer = new CookieContainer();
for (int j = 0; j < wsp.Cookies.Count; j++)
{
_cookieContainer.Add(wsp.Cookies[j]);
}
}
Stream st = null;
// 如果远程服务器采用了gzip，增进行相应的解压缩
if (wsp.Headers[HttpResponseHeader.ContentEncoding]?.ToLower().Contains("gzip") == true)
{
st = new GZipStream(st, CompressionMode.Decompress);
}
else
{
st = wsp.GetResponseStream();
}
// 设置编码
var encode = Encoding.UTF8;
if (!string.IsNullOrEmpty(wsp.Headers[HttpResponseHeader.ContentEncoding]))
{
encode = Encoding.GetEncoding(wsp.Headers[HttpResponseHeader.ContentEncoding]);
}
// 读取内容
var sr = new StreamReader(st, encode);
var ss = sr.ReadToEnd();
sr.Dispose();
wsp.Dispose();
return(ss);
}
/// <summary>
/// 调用远程地址
/// </summary>
/// <param name="url">地址</param>
/// <param name="method">请求方式</param>
/// <param name="postdata">Post数据</param>
/// <param name="timeout">超时秒数</param>
/// <param name="proxy">代理</param>
/// <returns>远程方法返回的内容</returns>
public static async Task <string> CallAPI(string url, HttpMethodEnum method = HttpMethodEnum.GET, IDictionary <string, string> postdata = null, int?timeout = null, string proxy = null)
{
try
{
if (string.IsNullOrEmpty(url))
{
return(string.Empty);
}
//新建http请求
var request = WebRequest.Create(url) as HttpWebRequest;
//如果配置了代理，则使用代理
if (string.IsNullOrEmpty(proxy) == false)
{
request.Proxy = new WebProxy(proxy);
}
request.Method = method.ToString();
//如果是Post请求，则设置表单
if (method == HttpMethodEnum.POST || method == HttpMethodEnum.PUT)
{
if (postdata.ContainsKey("content-type"))
{
request.ContentType = postdata["content-type"];
}
else
{
request.ContentType = "application/x-www-form-urlencoded";
}
if (postdata == null || postdata.Count == 0)
{
request.ContentLength = 0;
}
}
request.UserAgent = DefaultUserAgent;
//设置超时
if (timeout.HasValue)
{
request.ContinueTimeout = timeout.Value;
}
request.CookieContainer = new CookieContainer();
//填充表单数据
if (!(postdata == null || postdata.Count == 0))
{
var buffer = new StringBuilder();
var i = 0;
foreach (string key in postdata.Keys)
{
if (i > 0)
{
buffer.AppendFormat("&{0}={1}", key, postdata[key]);
}
else
{
buffer.AppendFormat("{0}={1}", key, postdata[key]);
}
i++;
}
var data = Encoding.UTF8.GetBytes(buffer.ToString());
using (var stream = await request.GetRequestStreamAsync())
{
stream.Write(data, 0, data.Length);
}
}
var res = await request.GetResponseAsync();
var wsp = (HttpWebResponse)res;
Stream st = null;
//如果远程服务器采用了gzip，增进行相应的解压缩
if (wsp.Headers[HttpResponseHeader.ContentEncoding]?.ToLower().Contains("gzip") == true)
{
st = new GZipStream(st, CompressionMode.Decompress);
}
else
{
st = wsp.GetResponseStream();
}
//设置编码
var encode = Encoding.UTF8;
if (!string.IsNullOrEmpty(wsp.Headers[HttpResponseHeader.ContentEncoding]))
{
encode = Encoding.GetEncoding(wsp.Headers[HttpResponseHeader.ContentEncoding]);
}
//读取内容
var sr = new StreamReader(st, encode);
var ss = sr.ReadToEnd();
sr.Dispose();
wsp.Dispose();
return(ss);
}
catch (Exception ex)
{
//返回失败信息
ListItemModel rv = new ListItemModel()
{
Text = ex.Message,
Value = ex.StackTrace
};
return(HttpUtility.UrlDecode(JsonSerializer.Serialize(rv)));
}
}
public async Task Download(string url, object data, HttpMethodEnum method = HttpMethodEnum.POST)
{
await JSRuntime.InvokeVoidAsync("urlFuncs.download", url, JsonSerializer.Serialize(data), method.ToString());
}