存储多个文件的字符串字节表示答案

【问题标题】：Storing string byte representations of multiple files存储多个文件的字符串字节表示
【发布时间】：2012-03-27 08:15:39
【问题描述】：

我需要在单个 HTTP Post 中进行信息的 HTTP 发布，包括多个文件的字符串字节表示。我遇到了很多字节分配错误，想知道是否有更好的方法来存储这些信息以供以后发布到服务器？

我基本上拍了很多图片文件，我将它们打包成一个格式的 HTTP Post 字符串：

name="string byte representation of picture file"&timestamp="time"&gps="latitude""longitude",etc.

Logcat：

03-09 22:26:41.329: E/dalvikvm-heap(8716): Out of memory on a 5932438-byte allocation.
03-09 22:26:41.329: I/dalvikvm(8716): "main" prio=5 tid=1 RUNNABLE
03-09 22:26:41.329: I/dalvikvm(8716):   | group="main" sCount=0 dsCount=0 s=N obj=0x40020ba0 self=0xddd0
03-09 22:26:41.329: I/dalvikvm(8716):   | sysTid=8716 nice=0 sched=0/0 cgrp=unknown handle=-1345025972
03-09 22:26:41.329: I/dalvikvm(8716):   at java.lang.AbstractStringBuilder.enlargeBuffer(AbstractStringBuilder.java:~97)
03-09 22:26:41.329: I/dalvikvm(8716):   at java.lang.AbstractStringBuilder.append0(AbstractStringBuilder.java:157)
03-09 22:26:41.329: I/dalvikvm(8716):   at java.lang.StringBuilder.append(StringBuilder.java:217)
03-09 22:26:41.329: I/dalvikvm(8716):   at mfc.generalguixapi8.SaveData2.saveData(SaveData2.java:169)
03-09 22:26:41.329: I/dalvikvm(8716):   at mfc.generalguixapi8.SaveData2.onCreate(SaveData2.java:34)
03-09 22:26:41.329: I/dalvikvm(8716):   at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
03-09 22:26:41.329: I/dalvikvm(8716):   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
03-09 22:26:41.329: I/dalvikvm(8716):   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
03-09 22:26:41.329: I/dalvikvm(8716):   at android.app.ActivityThread.access$2300(ActivityThread.java:125)
03-09 22:26:41.329: I/dalvikvm(8716):   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
03-09 22:26:41.329: I/dalvikvm(8716):   at android.os.Handler.dispatchMessage(Handler.java:99)
03-09 22:26:41.329: I/dalvikvm(8716):   at android.os.Looper.loop(Looper.java:123)
03-09 22:26:41.329: I/dalvikvm(8716):   at android.app.ActivityThread.main(ActivityThread.java:4627)
03-09 22:26:41.339: I/dalvikvm(8716):   at java.lang.reflect.Method.invokeNative(Native Method)
03-09 22:26:41.339: I/dalvikvm(8716):   at java.lang.reflect.Method.invoke(Method.java:521)
03-09 22:26:41.339: I/dalvikvm(8716):   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
03-09 22:26:41.339: I/dalvikvm(8716):   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
03-09 22:26:41.339: I/dalvikvm(8716):   at dalvik.system.NativeStart.main(Native Method)
03-09 22:26:41.339: W/dalvikvm(8716): threadid=1: thread exiting with uncaught exception (group=0x40020ac0)
03-09 22:26:41.339: E/AndroidRuntime(8716): FATAL EXCEPTION: main
03-09 22:26:41.339: E/AndroidRuntime(8716): java.lang.OutOfMemoryError
03-09 22:26:41.339: E/AndroidRuntime(8716):     at java.lang.AbstractStringBuilder.enlargeBuffer(AbstractStringBuilder.java:97)
03-09 22:26:41.339: E/AndroidRuntime(8716):     at java.lang.AbstractStringBuilder.append0(AbstractStringBuilder.java:157)
03-09 22:26:41.339: E/AndroidRuntime(8716):     at java.lang.StringBuilder.append(StringBuilder.java:217)
03-09 22:26:41.339: E/AndroidRuntime(8716):     at mfc.generalguixapi8.SaveData2.saveData(SaveData2.java:169)
03-09 22:26:41.339: E/AndroidRuntime(8716):     at mfc.generalguixapi8.SaveData2.onCreate(SaveData2.java:34)
03-09 22:26:41.339: E/AndroidRuntime(8716):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
03-09 22:26:41.339: E/AndroidRuntime(8716):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
03-09 22:26:41.339: E/AndroidRuntime(8716):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
03-09 22:26:41.339: E/AndroidRuntime(8716):     at android.app.ActivityThread.access$2300(ActivityThread.java:125)
03-09 22:26:41.339: E/AndroidRuntime(8716):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
03-09 22:26:41.339: E/AndroidRuntime(8716):     at android.os.Handler.dispatchMessage(Handler.java:99)
03-09 22:26:41.339: E/AndroidRuntime(8716):     at android.os.Looper.loop(Looper.java:123)
03-09 22:26:41.339: E/AndroidRuntime(8716):     at android.app.ActivityThread.main(ActivityThread.java:4627)
03-09 22:26:41.339: E/AndroidRuntime(8716):     at java.lang.reflect.Method.invokeNative(Native Method)
03-09 22:26:41.339: E/AndroidRuntime(8716):     at java.lang.reflect.Method.invoke(Method.java:521)
03-09 22:26:41.339: E/AndroidRuntime(8716):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
03-09 22:26:41.339: E/AndroidRuntime(8716):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
03-09 22:26:41.339: E/AndroidRuntime(8716):     at dalvik.system.NativeStart.main(Native Method)

【问题讨论】：

您能发布一些或 LogCat 错误吗？
你能发布数据的发送位置吗？另外，尝试发送多少数据？
@MikeD 我还没有在任何地方发布数据。我只是想将所有数据打包成一个字符串。而且我不确定有多少数据，它会有所不同。大概是一次最多20张图片、20个视频和20个音频文件的字符串字节表示吧？
我现在在想也许将每个块保存在一个 xml 文件中。但我不确定如何在不先将整个字符串加载到应用程序中的情况下附加文本。

标签： android string byte store

【解决方案1】：

问题可以使用Sending file > 1MB using HTTP POST解决

我在上面的链接中遇到了 OutofMemory 问题，并通过将数据保存到 FileOutputStream 并将信息分块发送到服务器来解决它。

【讨论】：