AngularJS，$ http和transformResponse [英] AngularJS, $http and transformResponse

问题描述

我得到与AngularJS的一个奇怪的行为$ HTTP并没有真正理解transformResponse如何工作（该文档是在这一个有点轻）。

I'm getting a strange behaviour with AngularJS's $http and not really understanding how transformResponse works (the docs are a bit light on this one).

    WebAssets.get = function () {
        return $http.get('/api/webassets/list', {
            transformResponse: [function (data, headersGetter) {
                // not sure what to do here?!
                return data;
            }].concat($http.defaults.transformResponse) // presume this isn't needed, added for clarity
        }).then(function (response) {
            return new WebAssets(response.data);
        });
    };

API返回对象的数组：

The api returns an array of objects:

[{"webasset_name": "...", "application_id": "...", "etc": "..."}, ... ]

但是，当transformResponse做它的邪恶的业务数据转化成一个索引对象：

But when transformResponse has done it's evil business the data has transformed into an indexed object:

{"0":{"webasset_name":"...","application_id":"...", "etc": "..."}, "1":....}

我要保留原始数据结构（一个对象数组）。

I want to keep the original data structure (an array of objects).

推荐答案

要获得角度来不是你的数据转换成你需要覆盖默认$ httpProvider.defaults.transformResponse的行为的对象。它实际上是变压器的阵列。
你可以只将其设置为空： $ http.defaults.transformResponse = [];
下面是一个例子变压器我已经习惯了64位长整数转换为字符串：

To get angular to not convert your data into an object you need to override the behavior of the default $httpProvider.defaults.transformResponse. It is actually an array of transformers. You could just set it to be empty: $http.defaults.transformResponse = []; Here is an example transformer I have used to convert 64-bit long ints to strings:

function longsToStrings(response) {
    //console.log("transforming response");
    var numbers = /("[^"]*":\s*)(\d{15,})([,}])/g;
    var newResponse = response.replace(numbers, "$1\"$2\"$3");
    return newResponse;
}

要变压器添加到默认列表中，说领先于JSON解串器，你可以这样做：

To add a transformer to the default list, say ahead of the JSON deserializer, you can do this:

$http.defaults.transformResponse.unshift(longsToStrings);

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