/// <summary>
/// 执行API调用，返回结果数组
/// </summary>
/// <param name="script_name">调用的API方法，比如/v3/user/get_info， 参考 http://wiki.open.qq.com/wiki/API_V3.0%E6%96%87%E6%A1%A3 </param>
/// <param name="param">调用API时带的参数</param>
/// <param name="method">请求方法 post / get</param>
/// <param name="protocol">协议类型 http / https </param>
/// <returns>返回结果数组</returns>
public RstArray Api(string script_name, Dictionary <string, string> param, string method, string protocol)
{
RstArray result_array = new RstArray();
// 检查 openid 是否为空
if (string.IsNullOrEmpty(param["openid"]))
{
result_array.Msg = "openid is empty";
result_array.Ret = OPENAPI_ERROR_REQUIRED_PARAMETER_EMPTY;
return(result_array);
}
// 检查 openid 是否合法
if (!IsOpenId(param["openid"]))
{
result_array.Msg = "openid is invalid";
result_array.Ret = OPENAPI_ERROR_REQUIRED_PARAMETER_INVALID;
return(result_array);
}
// 无需传sig, 会自动生成
if (param.ContainsKey("sig"))
{
param.Remove("sig");
}
// 添加一些参数
param["appid"] = appid.ToString();
param["format"] = format;
// 生成签名
string secret = appkey + "&";
string sig = SnsSigCheck.MakeSig(method, script_name, param, secret);
param.Add("sig", sig);
string url = protocol + "://" + server_name + script_name;
// 增加cookie
Dictionary <string, string> cookie = new Dictionary <string, string>();
//记录接口调用开始时间
long start_time = SnsStat.GetTime();
//通过调用以下方法，可以打印出最终发送到openapi服务器的请求参数以及url，不打印可以注释
PrintRequest(url, param, method);
// 发起请求
result_array = SnsNetWork.MakeRequest(url, param, cookie, method, protocol);
if (result_array.Ret != 0)
{
result_array.Ret += OPENAPI_ERROR_HTPP;
return(result_array);
}
//解析返回结果的返回码
string stat_ret = "";
try
{
if (this.format == "xml")
{
XmlDocument xml = new XmlDocument();
xml.LoadXml(result_array.Msg);
stat_ret = xml.LastChild["ret"].InnerText.ToString();
}
else
{
JavaScriptSerializer serializer = new JavaScriptSerializer();
RstArray json_obj = new RstArray();
json_obj = serializer.Deserialize <RstArray>(result_array.Msg);
stat_ret = json_obj.Ret.ToString();
}
}
catch (Exception e)
{
result_array.Msg = e.Message;
// 远程返回的不是 json或者xml 格式, 说明返回包有问题
result_array.Ret += OPENAPI_ERROR_RESPONSE_DATA_INVALID;
return(result_array);
}
// 统计上报
if (is_stat)
{
Dictionary <string, string> stat_params = new Dictionary <string, string>();
stat_params["appid"] = appid.ToString();
stat_params["pf"] = param["pf"];
stat_params["rc"] = stat_ret;
stat_params["svr_name"] = server_name;
stat_params["interface"] = script_name;
stat_params["protocol"] = protocol;
stat_params["method"] = method;
SnsStat.StatReport(stat_url, start_time, stat_params);
}
//通过调用以下方法，可以打印出调用openapi请求的返回码以及错误信息,不打印可以注释
///PrintRespond(result_array);
return(result_array);
}
/// <summary>
/// 执行一个 HTTP 请求
/// </summary>
/// <param name="url">执行请求的URL</param>
/// <param name="param">表单参数</param>
/// <param name="cookie">cookie参数 </param>
/// <param name="method">请求方法 post / get</param>
/// <param name="protocol"> http协议类型 http / https</param>
/// <returns>返回结果数组</returns>
static public RstArray MakeRequest(string url, Dictionary <string, string> param, Dictionary <string, string> cookie, string method, string protocol)
{
string query_string = MakeQueryString(param);
string cookie_string = MakeCookieString(cookie);
//结果
RstArray result = new RstArray();
//请求类
HttpWebRequest request = null;
//请求响应类
HttpWebResponse response = null;
//响应结果读取类
StreamReader reader = null;
//http连接数限制默认为2，多线程情况下可以增加该连接数，非多线程情况下可以注释掉此行代码
ServicePointManager.DefaultConnectionLimit = 500;
try
{
if (method.Equals("get", StringComparison.OrdinalIgnoreCase))
{
if (url.IndexOf("?") > 0)
{
url = url + "&" + query_string;
}
else
{
url = url + "?" + query_string;
}
//如果是发送HTTPS请求
if (protocol.Equals("https", StringComparison.OrdinalIgnoreCase))
{
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
request = WebRequest.Create(url) as HttpWebRequest;
request.ProtocolVersion = HttpVersion.Version10;
}
else
{
request = WebRequest.Create(url) as HttpWebRequest;
}
request.Method = "GET";
request.Timeout = 3000;
}
else
{
//如果是发送HTTPS请求
if (protocol.Equals("https", StringComparison.OrdinalIgnoreCase))
{
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
request = WebRequest.Create(url) as HttpWebRequest;
request.ProtocolVersion = HttpVersion.Version10;
}
else
{
request = WebRequest.Create(url) as HttpWebRequest;
}
//去掉“Expect: 100-Continue”请求头，不然会引起post（417） expectation failed
ServicePointManager.Expect100Continue = false;
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.Timeout = 3000;
//POST数据
byte[] data = Encoding.UTF8.GetBytes(query_string);
using (Stream stream = request.GetRequestStream())
{
stream.Write(data, 0, data.Length);
}
}
//cookie
if (cookie_string != null)
{
request.Headers.Add("Cookie", cookie_string);
}
//response
response = (HttpWebResponse)request.GetResponse();
reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
//return
result.Msg = reader.ReadToEnd();
result.Ret = 0;
}
catch (Exception e)
{
result.Msg = e.Message;
result.Ret = ERROR_SNSNETWORK_HTTP;
}
finally
{
if (request != null)
{
request.Abort();
}
if (reader != null)
{
reader.Close();
reader.Dispose();
}
if (response != null)
{
response.Close();
}
}
return(result);
}
/// <summary>
/// 打印出返回结果的内容，当API中的这个函数的注释放开将会被调用。
/// </summary>
/// <param name="RstArray">待打印的array</param>
static private void PrintRespond(RstArray result_array)
{
HttpContext.Current.Response.Write("<br>============= respond info ================<br>");
HttpContext.Current.Response.Write("ret = " + result_array.Ret + "<br>msg = " + result_array.Msg + "<br>");
}
/// <summary>
/// 执行一个 HTTP 请求,以post方式，multipart/form-data的编码类型上传文件
/// </summary>
/// <param name="url">执行请求的URL</param>
/// <param name="param">表单参数</param>
/// <param name="cookie">cookie参数 </param>
/// <param name="protocol"> http协议类型 http / https</param>
/// <param name="file_name"> 文件名，文件相应参数的参数名，例如/v3/t/add_pic_t中的 "pic" </param>
/// <param name="file_path"> 文件的路径 </param>
/// <returns>返回结果数组</returns>
public static RstArray MutilpartPostFile(string url, Dictionary <string, string> param, Dictionary <string, string> cookie,
string protocol, string file_name, string file_path)
{
//结果
RstArray result = new RstArray();
//请求类
HttpWebRequest request = null;
//包体填充类
MemoryStream mem_stream = null;
Stream req_stream = null;
//请求响应类
HttpWebResponse response = null;
//文件流
FileStream file_stream = null;
//响应结果读取类
StreamReader reader = null;
//http连接数限制默认为2，多线程情况下可以增加该连接数，非多线程情况下可以注释掉此行代码
ServicePointManager.DefaultConnectionLimit = 500;
try
{
//https请求
if (protocol.Equals("https", StringComparison.OrdinalIgnoreCase))
{
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
request = WebRequest.Create(url) as HttpWebRequest;
request.ProtocolVersion = HttpVersion.Version10;
}
else
{
request = WebRequest.Create(url) as HttpWebRequest;
}
// 设置属性
request.Method = "POST";
request.Timeout = 3000;
//cookie
string cookie_string = MakeCookieString(cookie);
if (cookie_string != null)
{
request.Headers.Add("Cookie", cookie_string);
}
//去掉“Expect: 100-Continue”请求头，不然会引起post（417） expectation failed
ServicePointManager.Expect100Continue = false;
//设置请求体
mem_stream = new MemoryStream();
//边界符
string boundary = "---------------" + DateTime.Now.Ticks.ToString("x");
byte[] begin_boundary = Encoding.UTF8.GetBytes("--" + boundary + "\r\n");
byte[] end_boundary = Encoding.UTF8.GetBytes("--" + boundary + "--\r\n");
request.ContentType = "multipart/form-data; boundary=" + boundary;
//开头
mem_stream.Write(begin_boundary, 0, begin_boundary.Length);
//参数
string param_format = "Content-Disposition: form-data; name=\"{0}\"" +
"\r\n\r\n{1}\r\n--" + boundary + "\r\n";
StringBuilder param_string = new StringBuilder();
foreach (string key in param.Keys)
{
param_string.AppendFormat(param_format, key, param[key]);
}
byte[] param_byte = Encoding.UTF8.GetBytes(param_string.ToString());
mem_stream.Write(param_byte, 0, param_byte.Length);
//文件
file_stream = new FileStream(file_path, FileMode.Open, FileAccess.Read);
string file_format = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\n" +
"Content-Type: application/octet-stream\r\n\r\n";
string file_string = string.Format(file_format, file_name, file_path);
byte[] file_byte = Encoding.UTF8.GetBytes(file_string);
mem_stream.Write(file_byte, 0, file_byte.Length);
byte[] buffer = new byte[1024];
int bytes;
while ((bytes = file_stream.Read(buffer, 0, buffer.Length)) != 0)
{
mem_stream.Write(buffer, 0, bytes);
}
//结尾
mem_stream.Write(end_boundary, 0, end_boundary.Length);
request.ContentLength = mem_stream.Length;
req_stream = request.GetRequestStream();
mem_stream.Position = 0;
byte[] temp_buffer = new byte[mem_stream.Length];
mem_stream.Read(temp_buffer, 0, temp_buffer.Length);
req_stream.Write(temp_buffer, 0, temp_buffer.Length);
//响应
response = (HttpWebResponse)request.GetResponse();
reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
//return
result.Msg = reader.ReadToEnd();
result.Ret = 0;
}
catch (Exception e)
{
result.Msg = e.Message;
result.Ret = ERROR_SNSNETWORK_HTTP;
}
finally
{
if (request != null)
{
request.Abort();
}
if (response != null)
{
response.Close();
}
if (reader != null)
{
reader.Close();
reader.Dispose();
}
if (file_stream != null)
{
file_stream.Close();
file_stream.Dispose();
}
if (mem_stream != null)
{
mem_stream.Close();
mem_stream.Dispose();
}
if (req_stream != null)
{
req_stream.Close();
req_stream.Dispose();
}
}
return(result);
}