Volley - 使用 JSONArrayRequest 发送 POST 请求 [英] Volley - Sending a POST request using JSONArrayRequest

问题描述

我正在使用 Volley 与 API 进行交互.我需要向返回 JSON 数组的服务发送一个 post 请求(带参数).

I'm using Volley to interact with an API. I need to send a post request (with parameters) to a service that returns a JSON Array.

JsonObjectRequest 有一个构造函数，它接受一个方法和一组参数

JsonObjectRequest has a constructor that takes a method and a set of parameters

JsonObjectRequest(int method, java.lang.String url, JSONObject jsonRequest, Response.Listener<JSONObject> listener, Response.ErrorListener errorListener) 

然而 JSONArrayRequest(我需要的那个)只有一个这样的构造函数

However JSONArrayRequest (the one I need) only has one constructor of the form

JsonArrayRequest(java.lang.String url, Response.Listener<JSONArray> listener, Response.ErrorListener errorListener) 

如何让这个发送带有数据的 POST 请求?

How can I make this send a POST request with data?

推荐答案

他们可能会在稍后添加它，但同时您可以自己添加想要的构造函数:

They're probably going to add it later, but in the meanwhile you can add the wanted constructor yourself:

public JsonArrayRequest(int method, String url, JSONObject jsonRequest,
        Listener<JSONArray> listener, ErrorListener errorListener) {
    super(method, url, (jsonRequest == null) ? null : jsonRequest.toString(), 
        listener, errorListener);
}

这没有经过测试，但我认为没有理由这不应该起作用，因为实现细节在超类中:JsonRequest.

This isn't tested, though I see no reason this shouldn't work since the implementation details are in the super class: JsonRequest.

试试看是否有效.

我叫它！在我回答这个问题后，他们花了将近两年的时间，但 Volley 团队于 2015 年 3 月 19 日将这个构造函数添加到回购中.你猜怎么着?这是 EXACT 语法.

I called it! It took them almost two years after I answered this but the Volley team added this constructor on March 19, 2015 to the repo. Guess what? This is the EXACT syntax.

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