Express：將req.body對象中的數組分配給各個變量

Question

我一直在使用Express和body-parser讀取應用程序的Angular端發送的JSON對象時遇到了相當多的麻煩。根據我所嘗試的，似乎我的變量賦值語法在某種程度上是不可靠的。到目前爲止，我已經嘗試了很多不同的語法，所以我希望有人能夠幫助我找出正確的方法，將請求主體中的各個位分配到相關的變量中。

下面是一些我迄今所做的故障排除：

• 驗證了對象，我要發送的數據實際上是被公佈。

• 驗證Content-Type是「application/json」。

• 已驗證body-parser正在處理請求，並且req.body中填充了數據。

• 嘗試使用和不使用「application/json」的顯式設置作爲內容類型，而不改變結果。

下面是如何$ HTTP是在發送對事物的角度側的數據：

.controller ('Ctrl', function($scope, $http) { 
$scope.generateLabel = function(){ 
     var httpData = [ 
      {"addressToName": $scope.addressToName}, 
      {"addressToStreet1": $scope.addressToStreet1}, 
      {"addressToCity": $scope.addressToCity}, 
      {"addressToState": $scope.addressToState}, 
      {"addressToZip": $scope.addressToZip}, 
      {"addressToEmail": $scope.addressToEmail}, 
      {"parcelType": $scope.parcelType}, 
      {"note": $scope.note}, 
      {"sku": $scope.sku}]; 

$http({ 
    method: 'POST', 

    url: '/postURL', 
    headers: { 
     'Content-Type': "application/json" 
    }, 
    data: httpData 

    }); 
}; 

...這是我的郵政快遞航線的相關位：

var bodyParser = require('body-parser'); 
app.use(bodyParser.json({strict: false})); 

app.post('/postURL', function(req, res) { 

    var addressToName = req.body.addressToName; 
    var addressToStreet1 = req.body.addressToStreet1; 
    var addressToCity = req.body.addressToCity; 
    var addressToState = req.body.addressToState; 
    var addressToZip = req.body.addressToZip; 
    var addressToCountry = 'US'; 
    var addressToEmail = req.body.addressToEmail; 
} 

下面是我在測試節點控制檯時看到的內容。頂部的消息是從身體解析器的調試模式，那麼它的原始req.body，則變量我試圖將它們分配給：

body-parser:json content-type "application/json" +0ms 
    body-parser:json content-encoding "identity" +2ms 
    body-parser:json read body +1ms 
    body-parser:json parse body +13ms 
    body-parser:json parse json +1ms 
Request body follows: 
[ { addressToName: 'My name' }, 
    { addressToStreet1: 'My address' }, 
    { addressToCity: 'Anytown' }, 
    { addressToState: 'OR' }, 
    { addressToZip: '97504' }, 
    { addressToEmail: 'My@email.com' }, 
    { parcelType: '8lb Box' }, 
    { note: '12314' }, 
    { sku: '11111' } ] 
Variables assigned: 
{ addressToName: undefined, 
    addressToStreet1: undefined, 
    addressToCity: undefined, 
    addressToState: undefined, 
    addressToZip: undefined, 
    addressToCountry: 'US', 
    addressToEmail: undefined } 

Answer 1

貌似req.body是對象的數組與性質，不具有屬性本身的對象。你的JS必須是：

var addressToName = req.body[0].addressToName; 
var addressToStreet1 = req.body[1].addressToStreet1; 
// etc. 

我建議有角把所有這些屬性到一個單一的對象，像這樣：

var httpData = { 
    "addressToName": $scope.addressToName, 
    "addressToStreet1": $scope.addressToStreet1, 
    // etc. 
}; 

然後你現有的JS應該工作。