Question

我正在尝试使用Paypals节点SDK按照示例代码执行付款重定向：

router.post('/', (req,res,next) => {

    //create a payment: 
    var payReq = JSON.stringify({
        intent:'sale',
        payer:{
            payment_method:'paypal'
        },
        redirect_urls:{
            return_url:'http://localhost:3000/pay/payment', // this is where they get redirected after paying.
            cancel_url:'http://localhost:3000/'
        },
        transactions:[{
            amount:{
            total: req.headers.amount,
            currency:'AUD'
            },
            description:'eventID: ' + req.headers.eventid + ' userID: ' + req.headers.userid
        }]
    });

    paypal.payment.create(payReq, (error, payment) => {
        var links = {};

        if(error){
            console.log('something went wrong with paypal');
            console.error(JSON.stringify(error));
        } else {
            // Capture HATEOAS links
            payment.links.forEach(function(linkObj){
                links[linkObj.rel] = {
                    href: linkObj.href,
                    method: linkObj.method
                };
            })

            // If redirect url present, redirect user
            if (links.hasOwnProperty('approval_url')){
                //REDIRECT USER TO links['approval_url'].href
                console.log('redirecting to ' + JSON.stringify(links['approval_url']));
                var redirectUrl = JSON.stringify(links['approval_url'].href);
                res.redirect(301, redirectUrl);
            } else {
                console.error('no redirect URI present');
            }
        }
     });
});

Paypal的授权正在运行，他们正在用JSON发送给我，我正在使用它作为重定向路由，该路由是上述语句中的控制台。

重定向到 {＆＃34; HREF＆＃34;：＆＃34; https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=EC-The-token-goes-here＆＃34;＆＃34;方法＆＃34;：＆＃34; REDIRECT＆＃34;}

但是在我执行res.redirect后，我的浏览器控制台会发出此错误并且重定向不会发生，它指向我的vendor.ca6865e中的此代码... .bundle.js：1787：

t.prototype.json=function(){return"string"==typeof this._body?JSON.parse(this._body):this._body instanceof ArrayBuffer?JSON.parse(this.text()):this._body},t.prototype.text=function(){return this._body instanceof i.a?this._body.toString():this._body instanceof ArrayBuffer?String.fromCharCode.apply....

Unexpected token < in JSON at position 0
    at JSON.parse (<anonymous>)
    at e.t.json (vendor.ca6865e….bundle.js:1787)
    at e.project (main.c0aa810….bundle.js:1)
    at e._next (vendor.ca6865e….bundle.js:474)
    at e.next (vendor.ca6865e….bundle.js:1)
    at XMLHttpRequest.h (vendor.ca6865e….bundle.js:1780)
    at t.invokeTask (vendor.ca6865e….bundle.js:2950)
    at Object.onInvokeTask (vendor.ca6865e….bundle.js:854)
    at t.invokeTask (vendor.ca6865e….bundle.js:2950)
    at e.runTask (vendor.ca6865e….bundle.js:2950)
    at XMLHttpRequest.invoke (vendor.ca6865e….bundle.js:2950)


ORIGINAL STACKTRACE:
    t.handleError   @   vendor.ca6865e….bundle.js:1640
next    @   vendor.ca6865e….bundle.js:1068
e.object.i  @   vendor.ca6865e….bundle.js:1117
e.__tryOrUnsub  @   vendor.ca6865e….bundle.js:1
e.next  @   vendor.ca6865e….bundle.js:1
e._next @   vendor.ca6865e….bundle.js:1
e.next  @   vendor.ca6865e….bundle.js:1
e.next  @   vendor.ca6865e….bundle.js:35
e.emit  @   vendor.ca6865e….bundle.js:1117
t.triggerError  @   vendor.ca6865e….bundle.js:854
onHandleError   @   vendor.ca6865e….bundle.js:854
t.handleError   @   vendor.ca6865e….bundle.js:2950
e.runTask   @   vendor.ca6865e….bundle.js:2950
invoke  @   vendor.ca6865e….bundle.js:2950


SyntaxError: Unexpected token < in JSON at position 0
    at JSON.parse (<anonymous>)
    at e.t.json (vendor.ca6865e….bundle.js:1787)
    at e.project (main.c0aa810….bundle.js:1)
    at e._next (vendor.ca6865e….bundle.js:474)
    at e.next (vendor.ca6865e….bundle.js:1)
    at XMLHttpRequest.h (vendor.ca6865e….bundle.js:1780)
    at t.invokeTask (vendor.ca6865e….bundle.js:2950)
    at Object.onInvokeTask (vendor.ca6865e….bundle.js:854)
    at t.invokeTask (vendor.ca6865e….bundle.js:2950)
    at e.runTask (vendor.ca6865e….bundle.js:2950)
    at XMLHttpRequest.invoke (vendor.ca6865e….bundle.js:2950)

Answer 1

Derp，正是JSON.stringify打破了它。事实证明没有必要。

Express服务器，paypal checkout，res.redirect和Uncaught SyntaxError：意外的令牌＆lt;在JSON的第0位

1 个答案: