kotlin - 如何在 Webview 和 Retrofit2 Okhttp3 之间共享 cookie

Question

我有一个有 2 个请求的站点:

第一个是看到一个装有食材的篮子(无需登录)

GET https://www.ah.nl/mijnlijst2

第二个是在篮子中插入元素的请求。

POST https://www.ah.nl/common/api/basket/v2/add
{
    "items": [{
        "quantity": 1,
        "id": 395948
    }]
}

在我的应用程序中，我做了 3 件事:

使用隐藏的 webview 初始化 cookie:

initializeWebView(binding.webView, "https://www.ah.nl/mijnlijst2")

var myCookie = ""

@SuppressLint("JavascriptInterface", "SetJavaScriptEnabled")
fun initializeWebView(webView: WebView, url: String?) {
    val settings = webView.settings
    settings.javaScriptEnabled = true
    settings.builtInZoomControls = false
    settings.setGeolocationEnabled(true)
    settings.setAppCacheEnabled(false)
    settings.loadsImagesAutomatically = true
    webView.webViewClient = WebViewClient()
    webView.loadUrl(url)

    webView.webViewClient = object : WebViewClient() {

        override fun onPageFinished(webView: WebView?, url: String) {
            super.onPageFinished(webView, url)

            val syncManager =
                CookieSyncManager.createInstance(webView?.context)
            val cookieManager: CookieManager = CookieManager.getInstance()
            cookieManager.setAcceptThirdPartyCookies(webView,true)

            if (cookieManager.getCookie(url)!= null) {
                val cookie: String = cookieManager.getCookie(url)
                myCookie = cookie
                Timber.d("Cookie = $myCookie")
            }

            syncManager.sync()
        }
    }

    webView.loadUrl(url)
}

2:插入成分:

val response = api.insertIngredient(WebViewManager.myCookie, ingredients).execute()

interface AHApi {

    @Headers(
        "content-type: application/json; charset=utf-8",
        "accept-encoding: gzip, deflate, br"
    )
    @POST("common/api/basket/v2/add")
    fun insertIngredient(
        @Header("cookie") cookie: String,
        @Body ingredients: AhIngredientRequest
    ): Call<ResponseBody>
}

data class AhIngredientRequest(

    @Expose
    @SerializedName("items")
    val items: List<AhItem>
)

data class AhItem(

    @SerializedName("id")
    var id: Long = 0L,

    @SerializedName("quantity")
    var quantity: Long = 1L
)

@Provides
@Singleton
fun provideAHApi(context: Context): AHApi{
    val interceptor = HttpLoggingInterceptor()
    if (BuildConfig.DEBUG) {
        interceptor.setLevel(HttpLoggingInterceptor.Level.BODY)
    } else {
        interceptor.setLevel(HttpLoggingInterceptor.Level.NONE)
    }

    val timeout = 30L
    val client: OkHttpClient = OkHttpClient.Builder()
        .readTimeout(timeout, TimeUnit.SECONDS)
        .writeTimeout(timeout, TimeUnit.SECONDS)
        .connectTimeout(timeout, TimeUnit.SECONDS)
        .followRedirects(false)
        .build()

    val retrofit: Retrofit = Retrofit.Builder()
        .baseUrl(context.getString(R.string.ah_api))
        .addConverterFactory(MoshiConverterFactory.create().asLenient())
        .client(client)
        .build()
    return retrofit.create(AHApi::class.java)
}

在 webview 中启动项目列表:

class WebviewFragment : Fragment() {

private lateinit var binding: FragmentWebviewBinding

override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
    val rootView = inflater.inflate(R.layout.fragment_webview, container, false)
    binding = DataBindingUtil.bind(rootView)!!

    WebViewManager.initializeWebView(binding.webView, "https://www.ah.nl/mijnlijst2")

    return rootView
}
}

OkHttp3 响应返回 200 OK。

WebView 保持为空，0 项。我希望我插入的项目会在那里，因为我与 setAcceptThirdPartyCookies 共享了我的 cookie .

但:
当我第一次手动添加成分时，
然后点击购物 list
然后回到我的应用程序，
并再次加载 webview，
从这一刻起，一切正常。

因此，似乎通过手动初始化 cookie

发布 https://www.ah.nl/common/api/basket/v2/add

https://www.ah.nl/mijnlijst2

有效，但是当我以编程方式执行时，它不会。

Answer 1

您还需要设置 cookieManager到改造 HTTP 客户端 (OkHttp)。

您可以使用 JavaNetCookieJar 来自 okhttp-urlconnection 包，一个包装类，委托(delegate)给 java.net.CookieHandler :

implementation "com.squareup.okhttp3:okhttp-urlconnection:4.6.0"

val httpClient = OkHttpClient.Builder()
    .cookieJar(JavaNetCookieJar(cookieManager))
    .build()
val retrofit = Retrofit.Builder()
    .client(httpClient)
    .build()