如何遍历节点中的json数组？

Question

我想遍历times，但是调试时times是undefined。

router.post('/something', function (req, res) {
    var times = req.body.times;
    for (i = 0; i < times.length; i++) { 
        // do something
    }
}

这是调试时body.times的样子：

{"duration":3600,"startTime":540,"weekDay":0},{"duration":3600,"startTime":600,"weekDay":0},{"duration":3600,"startTime":660,"weekDay":0},{"duration":3600,"startTime":1080,"weekDay":6}:""

这是VSCode调试中的屏幕截图。将spans替换为times。 （为清楚起见，我刚刚将其更改为times。）

以下是快速代码：

var jsonArray: [[String: Any]] = [/*The array*/]
let json: [String: Any] = ["times": jsonArray]
guard let body = (try? JSONSerialization.data(withJSONObject: json, 
                                                     options: [])) 
else { 
    return nil 
}

这是我配置快递的方式：

var app = express();
app.use(bodyParser.json()); // support json encoded bodies
app.use(bodyParser.urlencoded({ extended: true })); // support encoded bodies
app.use(bodyParser.json({ type: 'application/*+json' }))
app.use(bodyParser.json({ type: 'application/json' }))
app.use(bodyParser.json({ type: 'application/x-www-form-urlencoded'}))

json的输出：

 (lldb) po print(json)
 ["spans": [["weekDay": 0, "duration": 3600.0, "startTime": 540], ["weekDay": 0, "duration": 3600.0, "startTime": 600]]]

标题

Answer 1

代码中有两个要测试的部分

1. Node js
2. 迅速

1.Node js

通过邮寄测试您的api 检查内容类型（应用程序/ json或多部分） 并验证其是否有效

2）检查您的Swift代码并与服务器的内容类型匹配

您的数据

{"duration":3600,"startTime":540,"weekDay":0},{"duration":3600,"startTime":600,"weekDay":0},{"duration":3600,"startTime":660,"weekDay":0},{"duration":3600,"startTime":1080,"weekDay":6}:""

您要遍历对象而不是数组 所以它不会起作用。