angular.js - Angular开发的单页面应用，如何正确地实现在微信里的网页授权和调用js sdk

Question

一个微信公众号的外链网页，使用angular做成了单页应用，目前碰到了 微信网页授权 和 调用 js sdk 的问题

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微信授权

据我所目前所知，调用了微信授权后，单页应用的入口 url 会长成这样（假定域名为:example.com）：

• ①http://example.com?code=aaabbb/#/home

或者(启用了html5 mode) 长成这样：

• ②http://example.com/home?code=aaabbb

?code=aaabbb, 是微信授权后重定向时填充的，有了这个才能进一步去获取用户信息，参见 微信开发文档 > 获取code

至此，还不会出现问题

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调用 js sdk

由于Android微信客户端不支持pushState的H5新特性，url②废弃(亲测，确实不能通过验证)，所以入口url是这样：

• http://example.com?code=aaabbb/#/home

现在问题来了，如果没有?code=aaabbb就能通过签名验证, 然后成功调用 js sdk，但实际情况是：如果需要授权?code=aaabbb必然存在，签名验证必定失败。那么到底如何做到授权和调用sdk均可用？？？

我目前的想法和做法是：微信授权重定向到http://example.com?code=aaabbb/#/home后，拿到code，然后再location.href = http://example.com/#/home。这样做是能拿到用户信息，并且成功调用sdk，但问题是每次进入应用，会刷新两次,这样用户体验极差，而且有强迫症的我也接受不了。

请教各位给个靠谱的方案

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Answer 1

Pure front-end cannot be implemented. You can only configure the domain name of the authorization callback page to the backend server, and then redirect it from the backend

Answer 2

You can use indexOf() to get the code value

var url  = 'http://example.com?code=aaabbb/#/home';
var n = url.indexOf('code=')+5;
var m = url.indexOf('/#');
var code = url.substr(n, m-1)；

This way you can get the code value

Answer 3

Pure front-end cannot be implemented. It just so happens that I have recently done a similar project, which also used angularjs and implemented a single-page program through angular-route.js.

Call the background interface through ajax in a single page program (index.html),
If successful, return: {status:true,...}
If not logged in and fail, return: {status:falst,next:'login',errmsg :'Error'}
Other errors returned: {status:falst,next:'Next operation',errmsg:'Error'}

If the return status result.status==false, result.next=='login':

case "login":
    $http.get($api.callback($api.login)).success(function(val){
        //通过后台返回 授权地址
        location.href = val.loginUrl;
    });
    return;

Authorize to jump to wxlogin.php. After verifying that the login is successful, after setting the SESSION, jump to the single-page program (index.html)
The program will continue to call the interface. Because you have already logged in, it returns: {status:true ,...}

Answer 4

The original poster ended up with location.href=""?

Answer 5

How should this be solved? The author will post the answer to solve it. I am going to use Vue to develop WeChat too