微信小程序获取OpenID

项目:

openID在globalData定义

// 登录
wx.login({
success: res => {
// 发送 res.code 到后台换取 openId, sessionKey, unionId
if (res.code) {

//获取openId
var that = getApp();
wx.request({
url: '你的服务器接口地址',
data: {
code: res.code
},
method: 'GET',
header: { 'content-type': 'application/json' },
success: function (openIdRes) {
console.info("获取用户openId成功");
that.globalData.openID = openIdRes.data.openid;
},
fail: function (error) {
console.info("获取用户openId失败");
this.globalData.openID = "失败2";
console.info(error);
},
complete: function (openIdRes){
//this.globalData.openID ="Complete";
}
})
}
}
})C#
public async Task<Models.WXDPC_GetOpenIDModel> GetOpenID(string Code)
{
string url = "https://api.weixin.qq.com/sns/jscode2session";
string appid = "你的appid";
string secret = "你的secret";
string grant_type = "authorization_code";
string js_code = Code;
string reauestUrl = url + "?"
+ nameof(appid) + "=" + appid + "&"
+ nameof(secret) + "=" + secret + "&"
+ nameof(grant_type) + "=" + grant_type + "&"
+ nameof(js_code) + "=" + js_code;
HttpClient httpClient = new HttpClient();
try
{
string json = await httpClient.GetStringAsync(reauestUrl);
Models.WXDPC_GetOpenIDModel getOpenID = JsonConvert.DeserializeAnonymousType(json, new Models.WXDPC_GetOpenIDModel());
return getOpenID;
}
catch { return null; }
}

C# WXDPC_GetOpenIDModel
public class WXDPC_GetOpenIDModel
{
/// <summary>
///
/// </summary>
public string session_key { get; set; }
/// <summary>
///
/// </summary>
public string openid { get; set; }
}