Android webview拦截请求，实现跨域处理

重写WEBViewClient 的 shouldInterceptRequest()，拦截请求，实现特殊处理（跨域处理）。

例如：拦截旧的url，替换域名，替换参数等，然后使用新url重新发起请求。

    @Requiresapi(Build.VERSioN_CODES.LOLLIPOP)    override fun shouldInterceptRequest(        view: WebView,        request: WebResourceRequest    ): WebResourceResponse? {        request.url.toString().let {        // 判断该请求是否需要拦截处理            if (it.contains("xxx")) {                return assembleResponse(view, request)            }        }        //此处代表拦截器不处理该请求，直接原路请求器处理        return super.shouldInterceptRequest(view, request)    }

组装WebResourceResponse：

    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)    private fun assembleResponse(        view: WebView,        request: WebResourceRequest    ): WebResourceResponse? {        try {            val originUrl = request.url.toString()            val realUrl = getRealUrl(originUrl)            // val headers = request.requestHeaders            val response = doGet(realPath, null).execute()                        if (response.isSuccessful && response.code() == 200) {                return response.body()?.run {                     WebResourceResponse(         response.header("Content-Type"),         response.header("Content-Encoding"),         response.body()?.byteStream()     )                }            }        } catch (e: Exception) {            e.printStackTrace()        }    }

网络请求–Get：

    private fun addHeader(builder: Request.Builder, headers: JSONObject?) {        if (headers != null) {            val keys = headers.keys()            while (keys.hasNext()) {                val key = keys.next()                val value = headers.optString(key, "")                builder.addHeader(key, value)            }        }    }    fun doGet(url: String?, headers: jsONObject?): Call? {        var client: OkHttpClient? = null        val trustManager = HttpUtils.getX509TrustManager()        val okhttpBuilder = OkHttpClient.Builder()            .connectTimeout(10, TimeUnit.SECONDS)            .readTimeout(60, TimeUnit.SECONDS)            .writeTimeout(60, TimeUnit.SECONDS) // okhttp 已经有RetryAndFollowUpInterceptor            .hostnameVerifier(HttpUtils.TrustAllHostnameVerifier())            .addNetworkInterceptor(RemoveDirtyConnIntercepter())            .sslSocketFactory(SSLSocketFactoryCompat(trustManager), trustManager)        client = okhttpBuilder.build()        val builder = Request.Builder().url(url)        addHeader(builder, headers)        val request = builder.get()            .build()        return client.newCall(request)    }

来源地址：https://blog.csdn.net/zhijiandedaima/article/details/127903455