Question

我想上传文件到网络服务器使用代码。但当尺寸＆gt; 6M ，抛出致命异常 java.lang.OutOfMemoryError

    HttpURLConnection conn;
    URL url = new URL(mServerUrl);
    conn = (HttpURLConnection) url.openConnection();
    conn.setDoOutput(true);
    conn.setDoInput(true);
    conn.setUseCaches(false);
    conn.setRequestMethod("POST");
    conn.setRequestProperty("Content-Type", file.getContentType());
    conn.setRequestProperty("Connection", "close");
    conn.setRequestProperty("Charset", "UTF-8");
    conn.connect();
    DataOutputStream os = new DataOutputStream(conn.getOutputStream());

    int totalSize = 0;
    byte[] buffer = new byte[1024];
    int len = 0;
    while ((len = file.getInStream().read(buffer, 0, 1024)) != -1) {

        totalSize += len;
        WDLog.i("totalSize = " + totalSize);
        os.write(buffer, 0, len);

    }

    file.getInStream().close();
    os.flush();
    os.close();

我该怎么做才能解决这个问题？感谢

有logcat信息：

12-26 19:35:06.976: D/dalvikvm(8952): GC_FOR_MALLOC freed 36718 objects / 1675552 bytes in 53ms
12-26 19:35:06.976: I/dalvikvm-heap(8952): Forcing collection of SoftReferences for 12580880-byte allocation
12-26 19:35:07.006: D/dalvikvm(8952): GC_FOR_MALLOC freed 646 objects / 47808 bytes in 34ms
12-26 19:35:07.006: E/dalvikvm-heap(8952): Out of memory on a 12580880-byte allocation.
12-26 19:35:07.006: I/dalvikvm(8952): "Thread-29" prio=5 tid=8 RUNNABLE
12-26 19:35:07.006: I/dalvikvm(8952):   | group="main" sCount=0 dsCount=0 s=N obj=0x46230978 self=0x30eb98
12-26 19:35:07.006: I/dalvikvm(8952):   | sysTid=8980 nice=0 sched=0/0 cgrp=default handle=3159096
12-26 19:35:07.016: I/dalvikvm(8952):   | schedstat=( 5075164776 7730011023 9520 )
12-26 19:35:07.016: I/dalvikvm(8952):   at java.io.ByteArrayOutputStream.expand(ByteArrayOutputStream.java:~93)
12-26 19:35:07.016: I/dalvikvm(8952):   at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:218)
12-26 19:35:07.016: I/dalvikvm(8952):   at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl$DefaultHttpOutputStream.write(HttpURLConnectionImpl.java:750)
12-26 19:35:07.016: I/dalvikvm(8952):   at java.io.DataOutputStream.write(DataOutputStream.java:101)
12-26 19:35:07.016: I/dalvikvm(8952):   at com.amtcmv.upload.UploadImgVidFile.postVid(UploadImgVidFile.java:218)
12-26 19:35:07.016: I/dalvikvm(8952):   at com.amtcmv.upload.UploadImgVidFile.run(UploadImgVidFile.java:95)
12-26 19:35:07.016: I/dalvikvm(8952):   at java.lang.Thread.run(Thread.java:1102)
12-26 19:35:07.016: E/dalvikvm(8952): Out of memory: Heap Size=19783KB, Allocated=9352KB, Bitmap Size=162KB
12-26 19:35:07.016: W/dalvikvm(8952): threadid=8: thread exiting with uncaught exception (group=0x400259f8)
12-26 19:35:07.026: E/AndroidRuntime(8952): FATAL EXCEPTION: Thread-29
12-26 19:35:07.026: E/AndroidRuntime(8952): java.lang.OutOfMemoryError
12-26 19:35:07.026: E/AndroidRuntime(8952):     at java.io.ByteArrayOutputStream.expand(ByteArrayOutputStream.java:93)
12-26 19:35:07.026: E/AndroidRuntime(8952):     at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:218)
12-26 19:35:07.026: E/AndroidRuntime(8952):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl$DefaultHttpOutputStream.write(HttpURLConnectionImpl.java:750)
12-26 19:35:07.026: E/AndroidRuntime(8952):     at java.io.DataOutputStream.write(DataOutputStream.java:101)
12-26 19:35:07.026: E/AndroidRuntime(8952):     at com.amtcmv.upload.UploadImgVidFile.postVid(UploadImgVidFile.java:218)
12-26 19:35:07.026: E/AndroidRuntime(8952):     at com.amtcmv.upload.UploadImgVidFile.run(UploadImgVidFile.java:95)
12-26 19:35:07.026: E/AndroidRuntime(8952):     at java.lang.Thread.run(Thread.java:1102)

和

os.write（buffer，0，len）;

此行抛出错误。

Answer 1

以 chunk by chunk 为基础将文件上传到服务器。例。首先上传1024字节的数据后，从服务器上传下一个1024字节的数据，依此类推，直到上传文件的所有数据为止。

Answer 2

如果您在模拟器上测试此代码，请确保您的RAM大小接近实际设备值。

上传文件抛出OutOfMemoryError

2 个答案: