最近开发微信公众平台,做下记录,以前也开发过,这次开发又给忘了,搞了半天,还是做个笔记为好。
注意框架为MVC 开发微信公众平台。场景为,在模板页中获取用户openid,想要进行验证的页面,集成模板页就可以了。
在_Layout.cshtml中加入如下代码
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< head >
< meta charset = "utf-8" />
< meta name = "viewport" content = "width=device-width, initial-scale=1.0" >
< title >@ViewBag.Title - My ASP.NET Application</ title >
@Styles.Render("~/Content/css")
@Scripts.Render("~/bundles/modernizr")
@{
var code = HttpContext.Current.Request["code"];
Log.logmsg(code);
string urlpath = HttpContext.Current.Request.Url.AbsoluteUri.ToString();
ViewBag.at = AdminUtil.GetOpenID(urlpath, code);
}
</ head >
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类AdminUtil中加入GetOpenID方法
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#region 获取OpenID
/// <summary>
/// 获取OpenID
/// </summary>
public static string GetOpenID( string redirect_url, string code)
{
string AppID = WXModel.AppID;
string AppSecret = WXModel.AppSecret;
string openid = "" ;
openid = WXApi.GetOpenID(AppID, redirect_url, code, AppSecret);
return openid;
}
#endregion
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类WXApi中加入GetOpenID方法
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#region 获取OpenId
/// <summary>
/// 获取OpenId
/// </summary>
public static string GetOpenID( string appid, string redirect_url, string code, string screct)
{
string strJson = "" ;
if ( string .IsNullOrEmpty(code))
{
redirect_url = HttpUtility.UrlEncode(redirect_url);
HttpContext.Current.Response.Redirect( string .Format( "https://open.weixin.qq.com/connect/oauth2/authorize?appid={0}&redirect_uri={1}&response_type=code&scope=snsapi_base&state={2}#wechat_redirect" ,
appid, redirect_url, new Random().Next(1000, 200000).ToString()));
}
else
{
strJson = HttpRequestUtil.RequestUrl( string .Format( "https://api.weixin.qq.com/sns/oauth2/access_token?appid={0}&secret={1}&code={2}&grant_type=authorization_code" ,
appid, screct, code));
}
return Tools.GetJsonValue(strJson, "openid" );
}
#endregion
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public static class WXModel
{
public static string access_token;
public static string AppID;
public static string AppSecret;
}
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/// <summary>
/// 工具类
/// </summary>
public class Tools
{
#region 获取Json字符串某节点的值
/// <summary>
/// 获取Json字符串某节点的值
/// </summary>
public static string GetJsonValue( string jsonStr, string key)
{
string result = string .Empty;
if (! string .IsNullOrEmpty(jsonStr))
{
key = "\"" + key.Trim( '"' ) + "\ "" ;
int index = jsonStr.IndexOf(key) + key.Length + 1;
if (index > key.Length + 1)
{
//先截逗号,若是最后一个,截“}”号,取最小值
int end = jsonStr.IndexOf( ',' , index);
if (end == -1)
{
end = jsonStr.IndexOf( '}' , index);
}
result = jsonStr.Substring(index, end - index);
result = result.Trim( new char [] { '"' , ' ' , '\'' }); //过滤引号或空格
}
}
return result;
}
#endregion
}
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public class HttpRequestUtil
{
#region 请求Url,不发送数据
/// <summary>
/// 请求Url,不发送数据
/// </summary>
public static string RequestUrl( string url)
{
return RequestUrl(url, "POST" );
}
#endregion
#region 请求Url,不发送数据
/// <summary>
/// 请求Url,不发送数据
/// </summary>
public static string RequestUrl( string url, string method)
{
// 设置参数
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
CookieContainer cookieContainer = new CookieContainer();
request.CookieContainer = cookieContainer;
request.AllowAutoRedirect = true ;
request.Method = method;
request.ContentType = "text/html" ;
request.Headers.Add( "charset" , "utf-8" );
//发送请求并获取相应回应数据
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
//直到request.GetResponse()程序才开始向目标网页发送Post请求
Stream responseStream = response.GetResponseStream();
StreamReader sr = new StreamReader(responseStream, Encoding.Default);
//返回结果网页(html)代码
string content = sr.ReadToEnd();
return content;
}
#endregion
}
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注意:需要在微信公众平台中设置授权回调域
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服务器之家。