ajax提交时openid会丢失，所以第一次获取了，就放到cookie里，再提交时使用
JS代码
<script>$(function () {$(".submit").click(function () {var selOp = $("#selOp").val();//类型var userTEL = $("#userTEL").val();//电话var proposal = $("#proposal").val();//评价内容openidvar code = $("#hdcode").val();//var openid = $("#hdopenid").val();//if (selOp.length > 100 || proposal.length>200) {alert("输入太多字符");return false;}var url = "Opinion.aspx?act=SetOp";$.ajax({type: "post",url: url,dataType: "json",data: { selOp: selOp, userTEL: userTEL, proposal: proposal, code: code },success: function (r) {if (r.code > 0) {alert("操作成功");$(".submit").hide();$(".submit01").hide();}else {alert("操作失败");$(".submit").hide();$(".submit01").hide();}}, complete: function (r) {}});});});</script>
后台代码
using BLL;using DAL;using Model;using Newtonsoft.Json;using Newtonsoft.Json.Linq;using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Linq.Expressions;using ;using .Http;using System.Text;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;namespace MyProject{public partial class Opinion : System.Web.UI.Page{private string act = "";public int selOp;//= "660";//public string userTEL;//= "660";//public string proposal;//= "185";//public string submitisshow = "none";//默认隐藏提交按钮public string openid = "";////微信公众号信息部分public string appid = "appid";public string appsecret = "appsecret";public string redirect_uri = HttpUtility.UrlEncode("/Amdfas/Opinion.aspx");//微信登录后回调地址，登录后跳转页面public string scope = "snsapi_base";//snsapi_base: ，获取到openid//snsapi_userinfo: 获取openid和用户资料（昵称、头像、国、省、城市、性别、权限）public string code="";public StringBuilder sbSubjects = new StringBuilder();protected void Page_Load(object sender, EventArgs e){if (!IsPostBack){if (Request.Cookies["openid"]==null){GetOpenid();}else{openid = Convert.ToString(Request.Cookies["openid"].Value);}if (!string.IsNullOrEmpty(Request["act"])){act = Request.QueryString["act"];}switch (act){case "SetOp":SetOp();break;default:break;}string str = "";}}/// <summary>/// 获取openid/// </summary>/// <param name="appId"></param>/// <param name="secret"></param>/// <param name="code"></param>/// <param name="grantType"></param>/// <returns></returns>public void GetOpenid(){/**微信认证获取openid部分：*临时认证code*///微信认证部分：第二步 获得codetry{code = Request["code"];if (string.IsNullOrEmpty(code)){//code = "";Response.Redirect("Opinion.html");//如果code没获取成功，重新拉取一遍//OpenAccess();//正常用这行取CODE}//微信认证部分：第三步 获得openidstring url = string.Format("https://api./sns/oauth2/access_token?appid={0}&secret={1}&code={2}&grant_type=authorization_code", appid, appsecret, code);HttpClient httpClient = new HttpClient();string result = HttpClientHelper.GetResponse(url);//Common.CreateWebLog("result的值", result.ToString());JObject outputObj = JObject.Parse(result);openid = outputObj["openid"].ToString();Common.CreateWebLog("获取openid成功", openid.ToString());HttpCookie objCookie = new HttpCookie("openid", openid);Response.Cookies.Add(objCookie);//return openid;}catch (Exception ex){Common.CreateWebLog("获取openid失败", ex.ToString());code = "";}}/** 接入入口* 开放到微信菜单中调用* @param $dir_url 来源url* @since 1.0* @return void*/public void OpenAccess(){//判断session不存在//if (Session["openid"] == null)//{// //认证第一步：重定向跳转至认证网址// string url = string.Format("https://open./connect/oauth2/authorize?appid={0}&redirect_uri={1}&&response_type=code&scope={2}&m=oauth2#wechat_redirect", appid, redirect_uri, scope);// Response.Redirect("Opinion.html"); //https://open./connect/oauth2/authorize?appid=APPID&redirect_uri=REDIRECT_URI&response_type=code&scope=SCOPE&state=STATE#wechat_redirect// Response.Write("<script language=\"javascript\" type=\"text/javascript\">window.location.href = \""+ url + "\" </ script >");//}判断session存在//else//{// //跳转到前端页面.aspx// //Response.Redirect(Request.Url.ToString());// Response.Write("<script language=\"javascript\" type=\"text/javascript\">window.location.href = \"" + Request.Url.ToString() + "\" </ script >");//}}private void SetOp(){int code = 1;selOp = Convert.ToInt32(Request["selOp"]);userTEL = Convert.ToString(Request["userTEL"]);proposal = Convert.ToString(Request["proposal"]);OpinionModel model = new OpinionModel();model.UserID = "";model.Openid = openid;model.UserTEL = userTEL;model.TypeID = selOp;model.Proposal = proposal;//openid userID,openid,userTEL,typeID,proposalif (proposal.Length>200|| selOp.ToString().Length>200){code = 0;}else{code=OpinionBLL.Add(model);}//code = Templates_Subjects_ResultBLL.Add02(toUserid, comeUserid, strpro);var rsp_obj = new{code = code,result = code.ToString()};Response.Write(JsonConvert.SerializeObject(rsp_obj));//将rsp_obj转化为json并输出Response.End();}}}
中间跳转页
<!DOCTYPE html><html><head><meta charset="utf-8" /><title></title><script src="JS/jquery-3.4.1.js"></script><script>$(function () {window.location.href = "https://open./connect/oauth2/authorize?appid=appid&redirect_uri=/Amedfdfore/Opinion.aspx&response_type=code&scope=snsapi_base&m=oauth2#wechat_redirect";});</script></head><body></body></html>
