支付宝小程序开发-利用支付宝的SDK获取用户User ID

支付宝小程序在前端只能获取到用户昵称和头像，但是这是远远不够的，我们至少需要获取到用户的支付宝User ID，这个时候就必须在后端利用支付宝的SDK来获取了，当然前端要发出 httprequest 请求，下面结合前两篇的例子进行修改

支付宝小程序前端

app.js

App({   globalData:{     studentid:'',     username:'',     apiurl: 'http://XXX'   },    getUserInfo(){     var that = this     return new Promise((resovle,reject)=>{       if(this.userInfo) resovle(this.userInfo);              //调用用户授权 api 获取用户信息       my.getAuthCode({         scopes: 'auth_user',          success:(res) =>{            if (res.authCode) {                  my.httpRequest({                url: that.globalData.apiurl + '/api/AliPay/GetUserInfo',                method: 'GET',                data: {                   auth_code: res.authCode                },                dataType: 'json',                success: function(res) {                   that.globalData.studentid = res.data.data.student_id;                   that.globalData.username = res.data.data.user_name;                   //获取用户信息,照片、昵称                   my.getAuthUserInfo({                     scopes: ['auth_user'],                     success: (res) => {                       that.userInfo = res;                       resovle(that.userInfo);                    },                    fail:() =>{                       reject({});                    }                   });                   console.log('返回UserDetail', res.data.data);                         },                fail: function(res) {                   my.alert({content: 'fail'});                },                complete: function(res) {                   my.hideLoading();                }             });           }         },         fail:() =>{           reject({});         }       });     });   },    onLaunch(options) {    },   onShow(options) {     // 从后台被 scheme 重新打开   }, });

上面的代码调取后端webapi http://XXX/api/AliPay/GetUserInfo 来获取用户信息，并把取到的userid,username 存到全局变量 globalData 里面

const app = getApp();  Page({   data: {     src: '',     username: '',     studentid: ''   },   imageError: function (e) {     console.log('image 发生错误', e.detail.errMsg)   },   imageLoad: function (e) {     console.log('image 加载成功', e);   },   onLoad(query) {     // 页面加载     app.getUserInfo().then(       user => {             console.info(user);             //设置头像             if (user.avatar.length > 0) {                this.setData({src: user.avatar});             }             else{                this.setData({src: '/images/tou.png'});             }              //设置用户名                 if (app.globalData.username)             {                this.setData({username: app.globalData.username});             }             else             {                this.setData({username: user.nickName});             }              if(app.globalData.studentid)             {                //设置UserId                this.setData({studentid: app.globalData.studentid});              }         }     );   },   onShow() {     // 页面显示           },   onReady() {          } });

本来官方只提供了.net framwork 的SDK，但网上已经有人移植了.net core 的版本，运行 Install-Package Alipay.AopSdk.Core 进行安装，在 appsettings.json 进行如下的配置，写上你的小程序公匙，私匙，appid 等参数 uid 可以不写

  "Alipay": {     //校园码支付宝小程序正式环境     "AlipayPublicKey": "",     "AppId": "",     "CharSet": "UTF-8",     "GatewayUrl": "https://openapi.alipay.com/gateway.do",     "PrivateKey": "",     "SignType": "RSA2",     "Uid": ""   }

然后在后端core还需要注入Service

Startup.cs 代码就补贴全部了，只贴相关的，这段代码就干这么个事，读取 appsettings.json 并注入服务

        private void ConfigureAlipay(IServiceCollection services)         {             var alipayOptions = Configuration.GetSection("Alipay").Get<AlipayOptions>();             //检查RSA私钥             AlipayConfigChecker.Check(alipayOptions.SignType, alipayOptions.PrivateKey);             services.AddAlipay(options => options.SetOption(alipayOptions)).AddAlipayF2F();         }           public IConfiguration Configuration { get; }          // This method gets called by the runtime. Use this method to add services to the container.         public void ConfigureServices(IServiceCollection services)         {             //配置alipay服务             ConfigureAlipay(services);             ......

在得到从前端传过来的授权码之后，利用授权得到用户信息

        private AlipayUserInfoShareResponse GetShareResponse(string auth_code)         {             var alipaySystemOauthTokenRequest = new AlipaySystemOauthTokenRequest             {                 Code = auth_code,                 GrantType = "authorization_code"             };             var oauthTokenResponse = _alipayService.Execute(alipaySystemOauthTokenRequest);             AlipayUserInfoShareRequest requestUser = new AlipayUserInfoShareRequest();             AlipayUserInfoShareResponse userinfoShareResponse = _alipayService.Execute(requestUser, oauthTokenResponse.AccessToken);             return userinfoShareResponse;         }          /// <summary>         /// 获取用户信息         /// </summary>         /// <param name="auth_code"></param>         /// <returns></returns>         [HttpGet]         [Route("GetUserInfo")]         public ActionResult GetUserInfo(string auth_code)         {             try             {                 AlipayUserInfoShareResponse userinfoShareResponse = GetShareResponse(auth_code);                 return new JsonResult(new { data = userinfoShareResponse });             }             catch (Exception ex)             {                 log.Error("错误:" + ex.ToString());                 return new JsonResult(new { data = ex.ToString() });             }         }

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