Android的HttpURLConnection在HEAD请求上抛出EOFException

问题描述

这个小代码片段可以在Mac的JVM上正常运行。不幸的是，它在Android 4.2上执行时崩溃。

This small code snippet runs fine on my Mac's JVM. Unfortunately it crashes when executed on Android 4.2.

import java.net.HttpURLConnection;
import java.net.URL;

public class App
{
    public static void main( String... arguments ) throws Exception
    {
        HttpURLConnection connection = (HttpURLConnection) new URL( "https://github.com" ).openConnection();
        connection.setRequestMethod( "HEAD" );

        System.out.println( connection.getResponseCode() + "" );
    }
}

如果我替换 https： //github.com https://www.facebook.com 它工作正常，但我没弄弄原因。

If I replace https://github.com with https://www.facebook.com it works fine but I'm failing to figure out why.

该异常不包含消息;所以这里至少是堆栈跟踪。

The exception does not contain a message; so here's at least the stack trace.

java.io.EOFException
        at java.util.zip.GZIPInputStream.readFully(GZIPInputStream.java:206)
        at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:98)
        at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:81)
        at libcore.net.http.HttpEngine.initContentStream(HttpEngine.java:541)
        at libcore.net.http.HttpEngine.readResponse(HttpEngine.java:844)
        at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:283)
        at libcore.net.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:495)
        at libcore.net.http.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:134)

推荐答案

原来这是Android类实现中的一个已知错误。在连接之前调用 Connection.setRequestProperty（Accept-Encoding，）; 可以用作解决方法。

Turned out this is a known bug in Android's class implementation. Calling Connection.setRequestProperty( "Accept-Encoding", "" ); before connecting can be used as workaround.

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