Android Kotlin中Volley库如何处理含多个点的URL？

以下是几个可行的解决方法：

• 用Uri.parse()确保URL格式正确
  不要直接传递字符串URL，通过Android的Uri.parse()方法解析后再使用，避免隐性的格式问题：

  val targetUrl = Uri.parse("https://xxxx.yyyy.net/mobile").toString()
  // 将targetUrl传入Volley请求
  

• 替换Volley默认的HttpStack为OkHttp
  Volley默认的HttpURLConnection在处理多级子域名时可能存在解析bug，改用OkHttp作为请求栈可以解决该问题：

  1. 先在项目的build.gradle中添加OkHttp依赖：

     implementation("com.squareup.okhttp3:okhttp:4.12.0")
     

  2. 自定义OkHttp实现Volley的HttpStack接口：

     class OkHttpStack(private val client: OkHttpClient) : HttpStack {
         override fun performRequest(request: Request<*>?, additionalHeaders: MutableMap<String, String>?): HttpResponse {
             val url = URL(request?.url)
             val okRequest = Request.Builder().url(url).apply {
                 additionalHeaders?.forEach { (key, value) -> addHeader(key, value) }
                 when (request?.method) {
                     Request.Method.GET -> get()
                     Request.Method.POST -> post(RequestBody.create(null, request.body ?: ByteArray(0)))
                     Request.Method.PUT -> put(RequestBody.create(null, request.body ?: ByteArray(0)))
                     Request.Method.DELETE -> delete()
                     else -> method(request?.method?.toString() ?: "", null)
                 }
             }.build()
     
             val okResponse = client.newCall(okRequest).execute()
             val statusCode = okResponse.code
             val headers = okResponse.headers.toMultimap().mapValues { it.value.firstOrNull() ?: "" }
             val responseBody = okResponse.body?.bytes() ?: ByteArray(0)
     
             return HttpResponse(statusCode, headers, responseBody.size, ByteArrayInputStream(responseBody))
         }
     }
     

  3. 创建Volley的RequestQueue时使用自定义的HttpStack：

     val okHttpClient = OkHttpClient()
     val requestQueue = Volley.newRequestQueue(applicationContext, OkHttpStack(okHttpClient))
     

• 清除Volley缓存排除旧解析干扰
  若之前的错误域名解析被Volley缓存，可清除缓存后重试：

  requestQueue.cache.clear()
  

内容的提问来源于stack exchange，提问作者Patrick