我在尝试使用OkHttp3异步Get时,经常遇到java.net.SocketTimeoutException异常。这表明我没有将读取超时值设置得足够高(我认为默认值为10秒)。
更大的问题是“如何防止出现此异常?”,但除非有更好的初始策略,否则我的直接问题是“如何为请求设置读取超时值?”。
在我的代码中,我使用了来自Okttp Recipes页面这里的信息。
请注意,try-catch的前两行被注释掉了。这是因为我无法使用所需的构建器(能够设置超时值的一个构建器,OkHttpClient.Builder)来添加标头信息(Request.Builder)。
我的代码如下:
我发现了一个似乎直接相关的问题,链接在okhttp的github网站上,这里。甚至有一个建议设置读取超时时间,正如上面提到的,已经被注释掉了,因为我无法弄清楚如何在描述的异步请求上使用那种构建器,该页面上的示例。我的异常堆栈跟踪如下,但请注意,大多数情况下我不会得到这个异常。堆栈跟踪:
更大的问题是“如何防止出现此异常?”,但除非有更好的初始策略,否则我的直接问题是“如何为请求设置读取超时值?”。
在我的代码中,我使用了来自Okttp Recipes页面这里的信息。
请注意,try-catch的前两行被注释掉了。这是因为我无法使用所需的构建器(能够设置超时值的一个构建器,OkHttpClient.Builder)来添加标头信息(Request.Builder)。
我的代码如下:
m_client = new OkHttpClient();
try
{
//OkHttpClient.Builder bldr = m_client.newBuilder();
//bldr.readTimeout(0, TimeUnit.SECONDS);
Request.Builder reqBuilder = new Request.Builder();
reqBuilder.addHeader("authorization", getToken());
Request request = reqBuilder.url("http://plusdev.kooklah.com/api/v2_1/items/get").build();
m_client.newCall(request).enqueue(new Callback()
{
@Override
public void onFailure(Call call, IOException e)
{
Log.i("Logit", "Inside onFailure() -- IOException: " + e.getMessage() + " ----- stack trace: " + UtilGen.exceptionToString(e));
runOnUiThread(new Runnable()
{
@Override
public void run()
{
// do stuff on UI thread
}
});
}
@Override
public void onResponse(Call call, final Response responseIn)
{
try
{
m_sServerResponse = responseIn.body().string();
}
catch (Exception ex)
{
Log.i("LogIt", " ---Inside onResponse() -- Exception occurred. ex: " + ex.toString());
}
runOnUiThread(new Runnable()
{
@Override
public void run()
{
Log.i("LogIt", " ---Inside onResponse() -- inside run().");
if (!m_sServerResponse.isEmpty())
{
Log.i("LogIt", " ---Inside onResponse() -- inside run() -- Success");
processDownloadedAssessments(m_sServerResponse);
}
}
});
}
});
}
catch (Exception ex)
{
Log.i("LogIt", "ex: " + ex.getMessage());
}
我发现了一个似乎直接相关的问题,链接在okhttp的github网站上,这里。甚至有一个建议设置读取超时时间,正如上面提到的,已经被注释掉了,因为我无法弄清楚如何在描述的异步请求上使用那种构建器,该页面上的示例。我的异常堆栈跟踪如下,但请注意,大多数情况下我不会得到这个异常。堆栈跟踪:
01-19 14:04:52.192: I/LogIt(25650): Inside onFailure() -- IOException: null ----- stack trace: java.net.SocketTimeoutException
01-19 14:04:52.192: I/LogIt(25650): at java.net.PlainSocketImpl.read(PlainSocketImpl.java:488)
01-19 14:04:52.192: I/LogIt(25650): at java.net.PlainSocketImpl.access$000(PlainSocketImpl.java:37)
01-19 14:04:52.192: I/LogIt(25650): at java.net.PlainSocketImpl$PlainSocketInputStream.read(PlainSocketImpl.java:237)
01-19 14:04:52.192: I/LogIt(25650): at okio.Okio$2.read(Okio.java:138)
01-19 14:04:52.192: I/LogIt(25650): at okio.AsyncTimeout$2.read(AsyncTimeout.java:236)
01-19 14:04:52.192: I/LogIt(25650): at okio.RealBufferedSource.indexOf(RealBufferedSource.java:325)
01-19 14:04:52.192: I/LogIt(25650): at okio.RealBufferedSource.indexOf(RealBufferedSource.java:314)
01-19 14:04:52.192: I/LogIt(25650): at okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:210)
01-19 14:04:52.192: I/LogIt(25650): at okhttp3.internal.http1.Http1Codec.readResponse(Http1Codec.java:191)
01-19 14:04:52.192: I/LogIt(25650): at okhttp3.internal.http1.Http1Codec.readResponseHeaders(Http1Codec.java:132)
01-19 14:04:52.192: I/LogIt(25650): at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.java:54)
01-19 14:04:52.192: I/LogIt(25650): at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
01-19 14:04:52.192: I/LogIt(25650): at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:45)
01-19 14:04:52.192: I/LogIt(25650): at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
01-19 14:04:52.192: I/LogIt(25650): at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
01-19 14:04:52.192: I/LogIt(25650): at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
01-19 14:04:52.192: I/LogIt(25650): at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
01-19 14:04:52.192: I/LogIt(25650): at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
01-19 14:04:52.192: I/LogIt(25650): at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
01-19 14:04:52.192: I/LogIt(25650): at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
01-19 14:04:52.192: I/LogIt(25650): at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:120)
01-19 14:04:52.192: I/LogIt(25650): at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
01-19 14:04:52.192: I/LogIt(25650): at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
01-19 14:04:52.192: I/LogIt(25650): at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:179)
01-19 14:04:52.192: I/LogIt(25650): at okhttp3.RealCall$AsyncCall.execute(RealCall.java:129)
01-19 14:04:52.192: I/LogIt(25650): at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32)
01-19 14:04:52.192: I/LogIt(25650): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
01-19 14:04:52.192: I/LogIt(25650): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
01-19 14:04:52.192: I/LogIt(25650): at java.lang.Thread.run(Thread.java:818)
OkHttpClient
构建器和Request
构建器是两个不同的类。您可以在OkHttpClient
构建器中设置超时时间,并将其应用于所有请求。您可以在Request
构建器中为单个请求设置标头。 - LordRaydenMKOkHttpClient
对象,然后执行此Request
。 - LordRaydenMK