意外的响应代码 403(但在浏览器中工作正常) [英] Unexpected response code 403 (But work fine in browser)

问题描述

我正在尝试从以下 URL 获取 json 数据

Im trying to get the json data from below URL

/newsapi.org/v2/everything?q=tesla&from=2021-05-07&sortBy=publishedAt&apiKey=c9e4ed47388d413c8af23fc46a330f8e

但是当我运行应用程序时它会显示

But when I run the app it shows

31029-31125 E/Volley: [228776] NetworkUtility.shouldRetryException: Unexpected response code 403 for https://newsapi.org/v2/everything?q=tesla&from=2021-02-23&sortBy=publishedAt&apiK 20ey=c9e4ed47388d413c8af23fc46a330f8e
31029-31125 E/Volley: [228776] NetworkUtility.shouldRetryException: Unexpected response code 403 for https://newsapi.org/v2/everything?q=tesla&from=2021-02-23&sortBy=publishedAt&apiK 20ey=c9e4ed47388d413c8af23fc46a330f8e

但是当我在 chrome 浏览器中输入 URL 时，它会正常显示 json 数据，但我在我的应用程序中得到了同样的东西这是我在 kotlin 中的代码

But when I enter the URL in chrome browser it shows the json data normally but I got getting the same thing in my app here is my code in kotlin

fun getNews(context: Context){
    var queue: RequestQueue = Volley.newRequestQueue(context)
    val url = "https://newsapi.org/v2/everything?q=tesla&from=2021-05-07&sortBy=publishedAt&apiKey=c9e4ed47388d413c8af23fc46a330f8e"
    val request = JsonObjectRequest(
        Request.Method.GET, url, null,
        { response ->
            var list: MutableList<newModel> = mutableListOf<newModel>()
            try {
                var rootArray: JSONArray = response.getJSONArray("articles")
                for(i in 0 until response.length()){
                    var dataObject: JSONObject = rootArray.get(i) as JSONObject
                    list.add(newModel(dataObject.getString("urlToImage") , dataObject.getString("title") , dataObject.getString("description") , dataObject.getString("url")))
                }

            } catch (e: Exception) {
                Toast.makeText(
                    context,
                    "error while parsing the jsonObject/array",
                    Toast.LENGTH_LONG
                ).show()
            }
            callBack.gotTheNewsData(list)
        }) { error ->
        Toast.makeText(context, "Error in responce", Toast.LENGTH_SHORT).show()
    }
    queue.add(request)
}

推荐答案

我遇到了同样的错误，我通过向请求传递标头 Mozilla/5.0" 解决了这个问题.

I was facing the same error and I solved it by passing a header "Mozilla/5.0" to the request.

这可以在您的代码上以这种方式完成.

This can be done in this way on your code.

fun getNews(context: Context){
var queue: RequestQueue = Volley.newRequestQueue(context)
val url = "Your URL here"

val request = object: JsonObjectRequest(
    Request.Method.GET, url, null,
    { response ->
        var list: MutableList<newModel> = mutableListOf<newModel>()
        try {
            var rootArray: JSONArray = response.getJSONArray("articles")
            for(i in 0 until response.length()){
                var dataObject: JSONObject = rootArray.get(i) as JSONObject
                list.add(newModel(dataObject.getString("urlToImage") , dataObject.getString("title") , dataObject.getString("description") , dataObject.getString("url")))
            }

        } catch (e: Exception) {
            Toast.makeText(
                context,
                "error while parsing the jsonObject/array",
                Toast.LENGTH_LONG
            ).show()
        }
        callBack.gotTheNewsData(list)
    }) { error ->
    Toast.makeText(context, "Error in responce", Toast.LENGTH_SHORT).show()
}

// overriding function to add Headers.
{
    override fun getHeaders(): MutableMap<String, String> {
        val headers = HashMap<String, String>()
        headers["User-Agent"]="Mozilla/5.0"
        return headers
    }
}

queue.add(request)
}

在构造请求之前使用 object 关键字很重要，以便能够覆盖 getHeaders() 方法.

It is important to use the object keyword before the construction of the request in order to be able to override the getHeaders() method.

这个答案帮助了我使用 kotlin 在 Volley 请求中添加自定义标头.

This answer helped me in adding a custom header in Volley request with kotlin.

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