将文本文件（11Mo）写入base64字符串（UTF8）（JSON的一部分），避免outofmemory？

我想要做 ：

文本文件（日志） - > JSON中的字符串 - >上传到服务器 . 我甚至有机会获得11Mo的档案吗？

我的代码：

ArrayList<String> listInfoLog= new ArrayList<String>();
listInfoLog = Tools.readFile(strPathFile); // load my logs from the file as ArrayList

StringBuilder sb = new StringBuilder();
for (int i = 0; i < listInfoLog.size(); i++){
   sb.append(listInfoLog.get(i) + "\n");
}
// code en base64
byte[] byteContenu = sb.toString().getBytes("UTF-8"); // OUTOFMEMORY
String byteContenuEncoded64 = Base64.encodeToString(byteContenu, Base64.DEFAULT);
synchroFile.setContenu(byteContenuEncoded64);
JSONObject jsonFile = synchroFile.convertFileToJson();

对getBytes（“UTF8”）的调用会生成一个outofmemory异常 .

12-11 13:49:42.780: E/dalvikvm-heap(13868): Out of memory on a 23040392-byte allocation.
12-11 13:49:42.780: I/dalvikvm(13868): "AsyncTask #3" prio=5 tid=15 RUNNABLE
12-11 13:49:42.780: I/dalvikvm(13868):   | group="main" sCount=0 dsCount=0 obj=0x62e4bc60 self=0xab360220
12-11 13:49:42.780: I/dalvikvm(13868):   | sysTid=13957 nice=10 sched=0/0 cgrp=apps/bg_non_interactive handle=-1422168792
12-11 13:49:42.780: I/dalvikvm(13868):   | state=R schedstat=( 6042297526 1923573007 5457 ) utm=578 stm=26 core=1
12-11 13:49:42.780: I/dalvikvm(13868):   at java.nio.charset.Charsets.toUtf8Bytes(Native Method)
12-11 13:49:42.780: I/dalvikvm(13868):   at java.lang.String.getBytes(String.java:856)
12-11 13:49:42.780: I/dalvikvm(13868):   at java.lang.String.getBytes(String.java:840)
12-11 13:49:42.780: I/dalvikvm(13868):   at com.ier.tepv.base.SynchroReceiptAsync.sendLogs(SynchroReceiptAsync.java:951)
12-11 13:49:42.780: I/dalvikvm(13868):   at com.ier.tepv.base.SynchroReceiptAsync.doInBackground(SynchroReceiptAsync.java:600)
12-11 13:49:42.780: I/dalvikvm(13868):   at com.ier.tepv.base.SynchroReceiptAsync.doInBackground(SynchroReceiptAsync.java:1)
12-11 13:49:42.780: I/dalvikvm(13868):   at android.os.AsyncTask$2.call(AsyncTask.java:288)
12-11 13:49:42.780: I/dalvikvm(13868):   at java.util.concurrent.FutureTask.run(FutureTask.java:237)
12-11 13:49:42.780: I/dalvikvm(13868):   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
12-11 13:49:42.780: I/dalvikvm(13868):   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
12-11 13:49:42.780: I/dalvikvm(13868):   at java.lang.Thread.run(Thread.java:841)
12-11 13:49:42.780: W/dalvikvm(13868): threadid=15: thread exiting with uncaught exception (group=0x61817bc0)
12-11 13:49:42.780: E/AndroidRuntime(13868): FATAL EXCEPTION: AsyncTask #3
12-11 13:49:42.780: E/AndroidRuntime(13868): Process: com.ier.tepv.base, PID: 13868
12-11 13:49:42.780: E/AndroidRuntime(13868): java.lang.RuntimeException: An error occured while executing doInBackground()
12-11 13:49:42.780: E/AndroidRuntime(13868):    at android.os.AsyncTask$3.done(AsyncTask.java:300)
12-11 13:49:42.780: E/AndroidRuntime(13868):    at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
12-11 13:49:42.780: E/AndroidRuntime(13868):    at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
12-11 13:49:42.780: E/AndroidRuntime(13868):    at java.util.concurrent.FutureTask.run(FutureTask.java:242)
12-11 13:49:42.780: E/AndroidRuntime(13868):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
12-11 13:49:42.780: E/AndroidRuntime(13868):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
12-11 13:49:42.780: E/AndroidRuntime(13868):    at java.lang.Thread.run(Thread.java:841)
12-11 13:49:42.780: E/AndroidRuntime(13868): Caused by: java.lang.OutOfMemoryError
12-11 13:49:42.780: E/AndroidRuntime(13868):    at java.nio.charset.Charsets.toUtf8Bytes(Native Method)
12-11 13:49:42.780: E/AndroidRuntime(13868):    at java.lang.String.getBytes(String.java:856)
12-11 13:49:42.780: E/AndroidRuntime(13868):    at java.lang.String.getBytes(String.java:840)
12-11 13:49:42.780: E/AndroidRuntime(13868):    at com.ier.tepv.base.SynchroReceiptAsync.sendLogs(SynchroReceiptAsync.java:951)
12-11 13:49:42.780: E/AndroidRuntime(13868):    at com.ier.tepv.base.SynchroReceiptAsync.doInBackground(SynchroReceiptAsync.java:600)
12-11 13:49:42.780: E/AndroidRuntime(13868):    at com.ier.tepv.base.SynchroReceiptAsync.doInBackground(SynchroReceiptAsync.java:1)
12-11 13:49:42.780: E/AndroidRuntime(13868):    at android.os.AsyncTask$2.call(AsyncTask.java:288)
12-11 13:49:42.780: E/AndroidRuntime(13868):    at java.util.concurrent.FutureTask.run(FutureTask.java:237)
12-11 13:49:42.780: E/AndroidRuntime(13868):    ... 3 more

我不明白我应该如何处理？它工作正常，除了较小的文件（150ko），但在11Mo时崩溃 .

实际上，我从未遇到过这个巨大的日志文件，因为系统开始运行但是为了它，我该怎么办呢？

我试过了 ：

• 将循环分成几部分，但字符串构建器也在外部

• 用字节流，但我不知道如何在UTF8中设置它 .

FileInputStream fis = new FileInputStream（fileLog）; ByteArrayOutputStream bos = new ByteArrayOutputStream（）; byte [] buf = new byte [1024]; try {for（int readNum;（readNum = fis.read（buf））！= -1;）{bos.write（buf，0，readNum）; //毫无疑问这里是0}} catch（IOException ex）{new TePVException（tagLocal，“sendLog”，“Streaming Log File ex =”ex.getLocalizedMessage（））; } byte [] bytes = bos.toByteArray（）; byteContenuEncoded64 = Base64.encodeToString（bytes，Base64.DEFAULT）;

这是有效的，这是一个很好的一步，但在这里它是outofmemory： String str = json.toString(); 我回到方形一:(