MVC微信网页授权获取用户OpenId
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2023-10-23 21:58:11
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。
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