MVC微信网页授权获取用户OpenId
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2023-11-30 09:15:40
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...
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
<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>
类adminutil中加入getopenid方法
#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
类wxapi中加入getopenid方法
#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
public static class wxmodel
{
public static string access_token;
public static string appid;
public static string appsecret;
}
/// <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
}
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
}
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。