如何使用数组属性发送POST请求（Ionic 2 HTTP插件）？ [英] How to send POST requests with array properties (Ionic 2 HTTP plugin)?

问题描述

在我的一个Ionic 2项目中，我需要向服务器发送POST请求，其中JSON正文如下所示：

In one of my Ionic 2 projects I need to send a POST request to a server with a JSON body that looks like this:

var body = { "prop" : 1, 
  "prop2" : "Test", 
  "prop3": [{ "id" : "1", "qty": 1, "details": "Test" }] 
}

我使用以下代码调用服务器使用Android中的本机HTTP插件（1.2.0）：

I am using the following code to call the server using the native HTTP plugin (1.2.0) in Android:

http.post(url, body, {}).then(function() { ... })

但我的服务器收到以下信息：

But my server is receiving the following:

{ "prop" : 1, 
  "prop2" : "Test", 
  "prop3": "[{ \"id\" : \"1\", \"qty\": 1, \"details\": \"Test\" }]"
}

如您所见，数组属性prop3正在变成一个字符串，所以我的服务器无法解析它，因为它期望一个数组，而不是一个字符串。

As you can see, the array property "prop3" is being turned into a string, so my server is failing to parse it because it's expecting an array, not a string.

我能做的一件事就是改变服务器端代码将此字符串解析回一个数组（但这远非理想）。我能做的另一件事是用JSON.stringify手动解析JSON对象。

One of the things I could do is to change the server side code to parse this string back into an array (but that would be far from ideal). The other thing I could do is to parse the JSON object manually with JSON.stringify.

那么，这只是插件中的一个错误还是我在这里遗漏了什么？

So, is this just a bug in the plugin or am I missing something here?

原生HTTP插件

推荐答案

所以，看了一下插件的源代码（Java一，我）我正在Android中测试我的应用程序，似乎我无法按原样使用该插件（我需要修改它）。我发现的是：

So, after taking a look at the plugin's source code (the Java one, I'm testing my application in Android) it seems that I won't be able to use the plugin as is (I would need to modify it). What I found was this:

在CordovaHttpPost.java中，请求的主体作为表单数据（简单键值）发送。

In CordovaHttpPost.java, the body of the request is sent as Form data (simple key-values).

request.form(this.getParams());  //Map<?, ?>

这就是为什么我的数组属性被转换为字符串（以及任何其他复杂对象）

That's why my array property is converted into a string (and any other complex object for that matter)

TL; DR此插件仅用于发送简单的JSON键值对象（没有嵌套，没有复杂的对象，没有数组等）。

TL;DR this plugin is only useful to send simple JSON key-value objects (no nesting, no complex objects, no arrays, etc.).

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