微信小程序获取openid服务器端代码
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string JsCode2SessionUrl = "";
protected void Page_Load(object sender, EventArgs e)
{
JsCode2SessionUrl = "https://api.weixin.qq.com/sns/jscode2session?appid={0}&secret={1}&js_code={2}&grant_type=authorization_code";
if (Request["Action"] == "ActionLogin")
{
string str_encryptedData = Request["encryptedData"];
string iv = Request["iv"];
//小程序appid和appsecret配置
string appid = Request["appid"];
string secret = Request["secret"];
//如果不传过来可以在web.config里配置
appid = ConfigurationManager.AppSettings["wx_appid"];
secret = ConfigurationManager.AppSettings["wx_key"];
string code = Request["code"];
string sessionId = JsCode2Session(appid, secret, code);
//Session["sessionId"] = sessionId;
if (sessionId == "")
{
Response.Write("{\"result\":\"session_key和openid取不到\",\"success\":false}");
Response.End();
}
string session_key = sessionId.Split(new Char[] { '#' })[0];
string openid = sessionId.Split(new Char[] { '#' })[1];
//Response.Write(sessionId);
Response.Write("{\"result\":\"" + openid + "\",\"success\":true}");
Response.End();
}
}
//code换取session_key,openid
//<summary>
//code换取session_key,openid
//</summary>
//<param name="appid"></param>
//<param name="secret"></param>
//<param name="code"></param>
//<returns></returns>
public string JsCode2Session(string appid, string secret, string code)
{
var url = string.Format(JsCode2SessionUrl, appid, secret, code);
var str = GetFunction(url);
try
{
JsonData jo = JsonMapper.ToObject(str);
string session_key = jo["session_key"].ToString();
string weixinID = jo["openid"].ToString();
return session_key + "#" + weixinID;
}
catch (Exception ex)
{
return "";
}
}
public string GetFunction(string url)
{
string serviceAddress = url;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(serviceAddress);
request.Method = "GET";
request.ContentType = "textml;charset=UTF-8";
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream myResponseStream = response.GetResponseStream();
StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.UTF8);
string retString = myStreamReader.ReadToEnd();
myStreamReader.Close();
myResponseStream.Close();
//Response.Write(retString);
return retString;
}
protected void Page_Load(object sender, EventArgs e)
{
JsCode2SessionUrl = "https://api.weixin.qq.com/sns/jscode2session?appid={0}&secret={1}&js_code={2}&grant_type=authorization_code";
if (Request["Action"] == "ActionLogin")
{
string str_encryptedData = Request["encryptedData"];
string iv = Request["iv"];
//小程序appid和appsecret配置
string appid = Request["appid"];
string secret = Request["secret"];
//如果不传过来可以在web.config里配置
appid = ConfigurationManager.AppSettings["wx_appid"];
secret = ConfigurationManager.AppSettings["wx_key"];
string code = Request["code"];
string sessionId = JsCode2Session(appid, secret, code);
//Session["sessionId"] = sessionId;
if (sessionId == "")
{
Response.Write("{\"result\":\"session_key和openid取不到\",\"success\":false}");
Response.End();
}
string session_key = sessionId.Split(new Char[] { '#' })[0];
string openid = sessionId.Split(new Char[] { '#' })[1];
//Response.Write(sessionId);
Response.Write("{\"result\":\"" + openid + "\",\"success\":true}");
Response.End();
}
}
//code换取session_key,openid
//<summary>
//code换取session_key,openid
//</summary>
//<param name="appid"></param>
//<param name="secret"></param>
//<param name="code"></param>
//<returns></returns>
public string JsCode2Session(string appid, string secret, string code)
{
var url = string.Format(JsCode2SessionUrl, appid, secret, code);
var str = GetFunction(url);
try
{
JsonData jo = JsonMapper.ToObject(str);
string session_key = jo["session_key"].ToString();
string weixinID = jo["openid"].ToString();
return session_key + "#" + weixinID;
}
catch (Exception ex)
{
return "";
}
}
public string GetFunction(string url)
{
string serviceAddress = url;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(serviceAddress);
request.Method = "GET";
request.ContentType = "textml;charset=UTF-8";
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream myResponseStream = response.GetResponseStream();
StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.UTF8);
string retString = myStreamReader.ReadToEnd();
myStreamReader.Close();
myResponseStream.Close();
//Response.Write(retString);
return retString;
}
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