下载意外的流错误结束？

Question

可能重复：
Android:“Unexpected end of stream” exception downloading large files

我downloding大约一个文件。 5MB使用HttpURLConnection类，但downlod在半路上我在这行我的代码得到错误的“流意外结束”：

     while ((count = input.read(data)) > 0) { 

这里是LOG：

11-20 16:05:55.749: ERROR/PRINTSTACK(3425): STACK:unexpected end of stream 
11-20 16:05:55.749: WARN/System.err(3425): java.io.IOException: unexpected end of stream 
11-20 16:05:55.749: WARN/System.err(3425):  at org.apache.harmony.luni.internal.net.www.protocol.http.FixedLengthInputStream.read(FixedLengthInputStream.java:47) 
11-20 16:05:55.749: WARN/System.err(3425):  at java.io.BufferedInputStream.read(BufferedInputStream.java:319) 
11-20 16:05:55.749: WARN/System.err(3425):  at java.io.FilterInputStream.read(FilterInputStream.java:133) 
11-20 16:05:55.759: WARN/System.err(3425):  at com.conjure.skiproj.DownloadService$Job.process(DownloadService.java:265) 
11-20 16:05:55.759: WARN/System.err(3425):  at com.conjure.skiproj.DownloadService$1.run(DownloadService.java:193) 
11-20 16:05:55.759: WARN/System.err(3425):  at java.lang.Thread.run(Thread.java:1019) 

帮助！ 1

编辑：在代码的详细信息建立的InputStream：

HttpURLConnection conexion = (HttpURLConnection)url.openConnection(); 
         conexion.setRequestMethod("GET"); 
         conexion.setReadTimeout(20000); 
         conexion.connect(); 
         File file = new File(root.getAbsolutePath()+"/", fileName); 

          int lenghtOfFile = conexion.getContentLength(); 

          InputStream input = new BufferedInputStream(url.openStream()); 

          OutputStream output = new FileOutputStream(file); 

          byte data[] = new byte[8192]; 
........................... 

编辑2：上得了在下一行下载的25％，新的错误IndexOutOfBoundsException异常：下面

output.write(data, 0, count); 

LOG：

11-20 17:47:02.311: ERROR/totaltotal(303): 24 
11-20 17:47:02.311: INFO/System.out(303): countcountcount:4332 
11-20 17:47:02.330: ERROR/totaltotal(303): 24 
11-20 17:47:02.330: INFO/System.out(303): countcountcount:2904 
11-20 17:47:02.330: ERROR/totaltotal(303): 25 
11-20 17:47:02.330: INFO/System.out(303): countcountcount:1452 
11-20 17:47:02.330: ERROR/totaltotal(303): 25 
11-20 17:47:02.650: INFO/System.out(303): countcountcount:4356 
11-20 17:47:02.650: ERROR/totaltotal(303): 25 
11-20 17:47:02.650: INFO/System.out(303): countcountcount:-1 
11-20 17:47:02.660: ERROR/totaltotal(303): 25 
11-20 17:47:02.892: DEBUG/dalvikvm(303): GC_FOR_MALLOC freed 10770 objects/490896 bytes in 143ms 
11-20 17:47:03.060: ERROR/PRINTSTACK(303): STACK:Arguments out of bounds 
11-20 17:47:03.060: WARN/System.err(303): java.lang.IndexOutOfBoundsException: Arguments out of bounds 
11-20 17:47:03.070: WARN/System.err(303):  at java.io.FileOutputStream.write(FileOutputStream.java:288) 
11-20 17:47:03.080: WARN/System.err(303):  at com.conjure.skiproj.DownloadService$Job.process(DownloadService.java:275) 
11-20 17:47:03.080: WARN/System.err(303):  at com.conjure.skiproj.DownloadService$1.run(DownloadService.java:191) 
11-20 17:47:03.080: WARN/System.err(303):  at java.lang.Thread.run(Thread.java:1096) 

编辑3： 我追查错误回FixedLengthInputStream然后进一步回到AbstractHttpInputStream类，其中有这种方法：

/** 
      * Calls abort on the cache entry and disconnects the socket. This 
      * should be invoked when the connection is closed unexpectedly to 
      * invalidate the cache entry and to prevent the HTTP connection from 
      * being reused. HTTP messages are sent in serial so whenever a message 
      * cannot be read to completion, subsequent messages cannot be read 
      * either and the connection must be discarded. 
      * 
      * <p>An earlier implementation skipped the remaining bytes, but this 
      * requires that the entire transfer be completed. If the intention was 
      * to cancel the transfer, closing the connection is the only solution. 
      */ 
      protected final void unexpectedEndOfInput() { 
       if (cacheRequest != null) { 
        cacheRequest.abort(); 
       } 
       httpURLConnection.releaseSocket(false); 
      } 

因此，看起来在Http消息错误的情况下，整个下载流被取消。

Answer 1

据我了解，在网络问题的情况下，计数为0是允许的。尝试...

while ((count = input.read(data)) != -1) { 
    if (count != 0) { 
     ... 
    } 
} 

Answer 2

即异常由FixedLengthInputStream抛出时所期望的字节数（通常在响应的内容长度报头中设置）比在响应中的实际数据大。检查内容长度标题是否正确。 （如果您为内容长度提供自己的值，请确保它是正确的。）

这将有助于查看设置输入流的代码。