错误！java.io.EOFexception

我收到错误消息到达EOFfile，我所做的只是通过套接字读取和写入长值，即文件大小，但我在客户端Java.io.EOFexception上收到错误代码如下 客户端（Android）

服务器

 try
{
  System.out.println("Request size.....");
                   long size = diskinfo.folderSize(new File(path));
                   System.out.println("Size of folder "+size);
                   out = new ObjectOutputStream(soc.getOutputStream());
                      out.writeLong(size);
                      out.flush();
}
 catch (IOException ex)
            {
                Logger.getLogger(Server.class.getName()).log(Level.SEVERE, null, ex);
            }
finally
{
  closeConnection() //closing input, output and socket
}

生成日志

09-23 20:56:45.573: W/System.err(5042): java.io.EOFException
09-23 20:56:45.573: W/System.err(5042):     at java.io.DataInputStream.readShort(DataInputStream.java:375)
09-23 20:56:45.573: W/System.err(5042):     at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:2388)
09-23 20:56:45.573: W/System.err(5042):     at java.io.ObjectInputStream.<init>(ObjectInputStream.java:445)
09-23 20:56:45.573: W/System.err(5042):     at com.example.diskexplorer.Client$SizeAndNumberTask.doInBackground(Client.java:138)
09-23 20:56:45.573: W/System.err(5042):     at com.example.diskexplorer.Client$SizeAndNumberTask.doInBackground(Client.java:1)
09-23 20:56:45.573: W/System.err(5042):     at android.os.AsyncTask$2.call(AsyncTask.java:185)
09-23 20:56:45.573: W/System.err(5042):     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
09-23 20:56:45.573: W/System.err(5042):     at java.util.concurrent.FutureTask.run(FutureTask.java:137)
09-23 20:56:45.573: W/System.err(5042):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068)
09-23 20:56:45.573: W/System.err(5042):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561)
09-23 20:56:45.573: W/System.err(5042):     at java.lang.Thread.run(Thread.java:1096)

09-23 20:56:45.573:W/System.err（5042）：java.io.eofeexception
09-23 20:56:45.573:W/System.err（5042）：位于java.io.DataInputStream.readShort（DataInputStream.java:375）
09-23 20:56:45.573:W/System.err（5042）：位于java.io.ObjectInputStream.readStreamHeader（ObjectInputStream.java:2388）
09-23 20:56:45.573:W/System.err（5042）：位于java.io.ObjectInputStream。（ObjectInputStream.java:445）
09-23 20:56:45.573:W/System.err（5042）：位于com.example.diskexplorer.Client$SizeAndNumberTask.doInBackground（Client.java:138）
09-23 20:56:45.573:W/System.err（5042）：位于com.example.diskexplorer.Client$SizeAndNumberTask.doInBackground（Client.java:1）
09-23 20:56:45.573:W/System.err（5042）：位于android.os.AsyncTask$2.call（AsyncTask.java:185）
09-23 20:56:45.573:W/System.err（5042）：在java.util.concurrent.FutureTask$Sync.innerRun（FutureTask.java:305）
09-23 20:56:45.573:W/System.err（5042）：位于java.util.concurrent.FutureTask.run（FutureTask.java:137）
09-23 20:56:45.573:W/System.err（5042）：位于java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1068）
09-23 20:56:45.573:W/System.err（5042）：位于java.util.concurrent.ThreadPoolExecutor$Worker.run（ThreadPoolExecutor.java:561）
09-23 20:56:45.573:W/System.err（5042）：位于java.lang.Thread.run（Thread.java:1096）

Stackoverflow正在休眠。服务器是否正在读取文件名并正确执行代码？

09-23 20:56:45.573: W/System.err(5042): java.io.EOFException
09-23 20:56:45.573: W/System.err(5042):     at java.io.DataInputStream.readShort(DataInputStream.java:375)
09-23 20:56:45.573: W/System.err(5042):     at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:2388)
09-23 20:56:45.573: W/System.err(5042):     at java.io.ObjectInputStream.<init>(ObjectInputStream.java:445)
09-23 20:56:45.573: W/System.err(5042):     at com.example.diskexplorer.Client$SizeAndNumberTask.doInBackground(Client.java:138)
09-23 20:56:45.573: W/System.err(5042):     at com.example.diskexplorer.Client$SizeAndNumberTask.doInBackground(Client.java:1)
09-23 20:56:45.573: W/System.err(5042):     at android.os.AsyncTask$2.call(AsyncTask.java:185)
09-23 20:56:45.573: W/System.err(5042):     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
09-23 20:56:45.573: W/System.err(5042):     at java.util.concurrent.FutureTask.run(FutureTask.java:137)
09-23 20:56:45.573: W/System.err(5042):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068)
09-23 20:56:45.573: W/System.err(5042):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561)
09-23 20:56:45.573: W/System.err(5042):     at java.lang.Thread.run(Thread.java:1096)