.net微信开发 如何获取AccessToken

本文实例为大家分享了获取accesstoken的方法，供大家参考，具体内容如下

accesstoken获取方法

public static access_token getaccesstoken()
{
  string formatstring = string.format("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={0}&secret={1}", appid, appsecret);

  access_token res = new access_token();
  httpwebrequest request = (httpwebrequest)webrequest.create(formatstring);
  request.method = "get";
  request.contenttype = "text/html;charset=utf-8";
  httpwebresponse response = (httpwebresponse)request.getresponse();
  stream myresponsestream = response.getresponsestream();
  streamreader mystreamreader = new streamreader(myresponsestream, encoding.getencoding("utf-8"));
  string retstring = mystreamreader.readtoend();
  mystreamreader.close();
  myresponsestream.close();
  if (retstring.indexof("7200") > 0)
  {
    access_token token = new access_token();
    token = jsonhelper.parsefromjson<access_token>(retstring);
    res.access_token = token.access_token;
    res.expires_in = token.expires_in;
  }
  return res;
}

access_token类结构

public class access_token
{
  public access_token()
  {
    // 
    //todo:用于验证access_token是否过期实体
    // 
  }
  string _access_token;
  string _expires_in;

  /// <summary> 
  /// 获取到的凭证  
  /// </summary> 
  public string access_token
  {
    get { return _access_token; }
    set { _access_token = value; }
  }

  /// <summary> 
  /// 凭证有效时间，单位：秒 
  /// </summary> 
  public string expires_in
  {
    get { return _expires_in; }
    set { _expires_in = value; }
  }
}

jsonhelper.parsefromjson方法

/// <summary> 
/// 将json对象转换为model
/// </summary> 
/// <typeparam name="t"></typeparam> 
/// <param name="szjson"></param> 
/// <returns></returns> 
public static t parsefromjson<t>(string szjson)
{
  t obj = activator.createinstance<t>();
  using (memorystream ms = new memorystream(encoding.utf8.getbytes(szjson)))
  {
    datacontractjsonserializer serializer = new datacontractjsonserializer(obj.gettype());
    return (t)serializer.readobject(ms);
  }
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。