50分求一个出错信息java.io.EOFException

Question

编译程序报错如下：
java.io.EOFException
at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2438)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1245)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
at com.tzsw.BigScreen.displayfile(BigScreen.java:968)
at com.tzsw.BigScreen$17.run(BigScreen.java:939)
at java.util.TimerThread.mainLoop(Timer.java:432)
at java.util.TimerThread.run(Timer.java:382)
到底什么原因有没有人知道，我用的服务器事Tomcat，数据库用Oracle，程序在Eclipse下跑的！
谁有解决方案？？？

Answer 1

部分代码如下：
public void displayfile() throws Exception {
    URL url = new URL(serverURL + "/screenfileservlet?deptid="+this.deptid+"&filenum="+this.filenum);
    URLConnection con = url.openConnection();
    con.setUseCaches(false);
    InputStream in = con.getInputStream();
    ObjectInputStream objStream;
    objStream = new ObjectInputStream(in);
    ScreenFile screenFile= (ScreenFile)objStream.readObject();
    if(screenFile.getCurfilenum()>screenFile.getTotalfilenum()) {
      this.filenum=1;
      displayfile();
    }
    else {
      String texttemp=screenFile.getFilecontent();
      bigscreen.setContentType("text/html");
//如果文件过大，分成几屏，连续显示
//System.out.println("asdfsdfasdf");
//System.out.println((int)(texttemp.length()/fileContentLength)+1);
      if(texttemp.length()>fileContentLength && fileContentNum<=(int)(texttemp.length()/fileContentLength)) {
        if(fileContentNum==0) {
          fileColor=texttemp.substring(texttemp.indexOf("\"")+1,texttemp.indexOf("\"",texttemp.indexOf("\"")+1));
          texttemp=texttemp.substring(fileContentNum*fileContentLength,(fileContentNum+1)*fileContentLength);
          bigscreen.setText(texttemp+"</font>");
          timerflag=2;
          fileContentNum++;
        }
        else if(fileContentNum==(int)(texttemp.length()/fileContentLength)) {
          texttemp=texttemp.substring(fileContentNum*fileContentLength,texttemp.length());
          bigscreen.setText("<font color='"+fileColor+"'>"+texttemp);
          timerflag=1;
          fileContentNum=0;
          filenum++;
        }
        else {
          texttemp=texttemp.substring(fileContentNum*fileContentLength,(fileContentNum+1)*fileContentLength);
          bigscreen.setText("<font color='"+fileColor+"'>"+texttemp+"</font>");
          timerflag=2;
          fileContentNum++;
        }
      }
      else {
        bigscreen.setText(screenFile.getFilecontent());
        filenum++;
      }
    }
  }
感觉就是这儿有问题!

Answer 2

自己用System.out。println（）
测试，应该是你的readObject（）方法读取越位了