Question

当我使用OKHttp请求链接时，它崩溃了，因为它不是正确的链接，我该如何捕获崩溃，并且我不确定将来是否会出现这些错误的链接。我需要抓捕他以避免程序崩溃

本文是通过翻译工具生成的，如果您听不懂，请告诉我。

try {
     val request = Request.Builder()
         .url("http://pic1.nipic.com|/2008-12-30/200812308231244_2.jpg ")
         .build()
     val client = OkHttpClient
         .Builder()
         .build()

     client.newCall(request).enqueue(object : Callback {

            override fun onResponse(call: Call, response: Response) {
                val s = response.body().toString()
                println(s)
            }

            override fun onFailure(call: Call, e: IOException) {
                e.printStackTrace()
            }
        })
    } catch (e: Exception) {
    }

我希望我能捕获它并避免崩溃。

java.lang.RuntimeException: java.net.URISyntaxException: Illegal character in authority at index 21: http://pic1.nipic.com|/
    at okhttp3.HttpUrl.uri(HttpUrl.java:386)
    at okhttp3.internal.connection.RouteSelector.resetNextProxy(RouteSelector.java:129)
    at okhttp3.internal.connection.RouteSelector.<init>(RouteSelector.java:63)
    at okhttp3.internal.connection.StreamAllocation.<init>(StreamAllocation.java:101)
    at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:112)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
    at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:254)
    at okhttp3.RealCall$AsyncCall.execute(RealCall.java:200)
    at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
    at java.lang.Thread.run(Thread.java:818)
 Caused by: java.net.URISyntaxException: Illegal character in authority at index 21: http://pic1.nipic.com|/
    at libcore.net.UriCodec.validate(UriCodec.java:63)
    at java.net.URI.parseURI(URI.java:395)
    at java.net.URI.<init>(URI.java:205)
    at okhttp3.HttpUrl.uri(HttpUrl.java:379)
    at okhttp3.internal.connection.RouteSelector.resetNextProxy(RouteSelector.java:129) 
    at okhttp3.internal.connection.RouteSelector.<init>(RouteSelector.java:63) 
    at okhttp3.internal.connection.StreamAllocation.<init>(StreamAllocation.java:101) 
    at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:112) 
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) 
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) 
    at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:254) 
    at okhttp3.RealCall$AsyncCall.execute(RealCall.java:200) 
    at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 
    at java.lang.Thread.run(Thread.java:818)

Answer 1

好吧，这是因为您在url中传递了一个特殊字符，从而使它被破坏了。为避免崩溃，您只需在执行代码之前从URL中删除特殊字符即可：

public class XpsPrinterHelper
    {
        public bool Print(byte[] documentImage, string printerName, string tempXpsFilename = "report.xps")
        {
            var success = false;
            var thread = new Thread(() =>
            {
                using (var printerQueue = GetPrintQueueFromPrinterName(printerName))
                {
                    try
                    {
                        //save file temporary
                        var filename = Path.Combine(Directory.GetCurrentDirectory(), tempXpsFilename);
                        File.WriteAllBytes(filename, documentImage);
                        using (var printSystemJobInfo = printerQueue.AddJob())
                        {
                            printSystemJobInfo.JobStream.Write(documentImage, 0, documentImage.Length);
                        }
                        success = true;
                    }
                    catch (PrintJobException)
                    {
                        printerQueue.Dispose();
                    }
                }
            });
            thread.SetApartmentState(ApartmentState.STA);
            thread.Start();
            thread.Join(); //Wait until finished
            return success;
        }

        private static PrintQueue GetPrintQueueFromPrinterName(string printerName)
        {
            if (printerName.StartsWith(@"\\")) //If it is a shared printer
            {
                var serverPath = printerName.Substring(0, printerName.LastIndexOf('\\'));
                var sharedPrinterName = printerName.Replace(serverPath, "");
                var printServer = new PrintServer(serverPath.TrimEnd('\\'));
                return printServer.GetPrintQueue(sharedPrinterName.Trim('\\'));
            }

            var localPrintServer = new LocalPrintServer();
            return localPrintServer.GetPrintQueue(printerName);
        }
    }

Answer 2

基本上，您可以使用try catch块

来避免该异常

    private fun testing() {
        val request = Request.Builder()
        try {
            val httpUrl = HttpUrl.parse("http://pic1.nipic.com|/2008-12-30/200812308231244_2.jpg")?.uri()
            httpUrl?.let {
                request.url(it.toURL())
            }
        }catch (e: Exception) {
            Log.d("Testing", e.toString())
            return
        }


        val client = OkHttpClient.Builder().build()

        client.newCall(request.build()).enqueue(object: Callback {
            override fun onFailure(call: Call, e: IOException) {
                Log.d("Testing", e.toString())
            }

            override fun onResponse(call: Call, response: Response) {
                Log.d("Testing", response.body().toString())
            }
        })
    }
}

请参阅下面的链接以获得更多讨论 https://github.com/square/okhttp/issues/543

OkHttp请求不正确的链接时崩溃

2 个答案: