【紧急求助】HTTP通信问题，请前辈们前来解答EOFException异常

[「已注销」]

在模拟器上完全可以成功的读取，装到真机上就不行了。。。
报出EOFException，请前辈们帮忙查看

再模拟器上
byte num[] = new byte[1];
num[0] = is.readByte();
num[0]=14 装到真机上 num[0]=1。。。。求助



客服端的代码

public class ExamTest extends MIDlet implements CommandListener {   
    public static final byte WAIT = 0;// 等待   
  
    public static final byte CONNECT = 1;// 连接中   
  
    public static final byte SUCCESS = 2;// 成功   
  
    public static final byte FAIL = 3;// 失败   
  
    int state;// 当前状态   
  
    Display display = Display.getDisplay(this);   
  
    Form form = new Form("HttpTest");   
  
    // StringBuffer sb = new StringBuffer("");   
  
    // StringItem si = new StringItem(null, sb.toString());   
  
    Command connect = new Command("联网", Command.OK, 1);   
  
    Command cls = new Command("清除网址", Command.OK, 1);   
  
    Command cancel = new Command("取消", Command.CANCEL, 1);   
  
    Command exit = new Command("退出", Command.EXIT, 1);   
  
    Command back = new Command("返回", Command.BACK, 1);   
  
    ChoiceGroup cmwapCG;// 接入方式   
  
    TextField urlTF;// 网址输入框   
  
    String url;// 网址   
  
    Http http;// 网络线程   
  
    Form page;// 页面   
  
    Alert waitPage;// 等待界面   
  
    public ExamTest() {   
        state = WAIT;// 等待状态   
        // 初始化等待界面   
        waitPage = new Alert("请等待", "网络连接中...", null, AlertType.INFO);   
        waitPage.addCommand(cancel);   
        waitPage.setCommandListener(this);   
        waitPage.setTimeout(Alert.FOREVER);   
  
        // 初始化页面   
        page = new Form("访问的页面");   
        page.addCommand(back);   
        page.setCommandListener(this);   
  
        // 初始化   
        cmwapCG = new ChoiceGroup("网络接入方式：", Choice.POPUP,   
                new String[] { "CMWAP" }, null);   
        urlTF = new TextField("请输入网址：",   
                "http://231599447.x6.fjjsp01.com/servlet/TestHttp", 100, TextField.URL);   
        form.append(cmwapCG);   
        form.append(urlTF);   
        // form.append(si);   
        form.addCommand(connect);   
        form.addCommand(cls);   
        // form.addCommand(cancel);   
        form.addCommand(exit);   
        form.setCommandListener(this);   
    }   
  
    protected void destroyApp(boolean b) {   
  
    }   
  
    protected void pauseApp() {   
  
    }   
  
    protected void startApp() {   
        display.setCurrent(form);   
    }   
  
    public void commandAction(Command c, Displayable d) {   
  
        if (c == connect) {// 联网   
  
            if (checkError())   
                return;   
            // display.setCurrent(waitPage);   
            http = new Http();   
            new Thread(http).start();   
  
        } else if (c == cancel) {// 取消   
            http.cancel();   
            http = null;   
            display.setCurrent(form);   
  
        } else if (c == back) {// 返回   
            page.deleteAll();   
            display.setCurrent(form);   
  
        } else if (c == cls) {// 清除数据   
            // cls();   
            urlTF.setString("");   
  
        } else if (c == exit) {// 退出   
            destroyApp(true);   
            notifyDestroyed();   
  
        }   
  
    }   
  
    // private void cls() {   
    // form.deleteAll();// 删除日志   
    // sb.delete(0, sb.length());   
    // si.setText(null);   
    // form.append(cmwapCG);   
    // form.append(urlTF);   
    // form.append(si);   
    // }   
  
    /**  
     * 判断是否正确  
     *   
     * @return  
     */  
    private boolean checkError() {   
        url = urlTF.getString();   
        if (state == CONNECT) {   
            addStr("当前已有网络连接，请稍候");   
            return true;   
  
        } else if (url == null || url.trim().equals("")) {   
            addStr("url不能为空");   
            return true;   
        }   
  
        if (!url.toLowerCase().startsWith("http://")) {// 添加http://   
            url = "http://" + url;   
  
        }   
        System.out.println(url);   
        return false;   
    }   
  
    /**  
     * 添加文字  
     *   
     * @param str  
     *            要添加的文字  
     */  
    private void addStr(String str) {   
        // sb.append(str + "\n");   
        // si.setText(sb.toString());   
        System.out.println(str);   
    }   
  
    /**  
     * 获取URL域名  
     *   
     * @param srcUrl  
     * @param domain  
     *            true为截域名，false为截地址  
     * @return  
     */  
    private String getURLhost(String srcUrl) {   
        int k = srcUrl.toLowerCase().indexOf("/", 7);   
        if (k == -1)   
            return srcUrl.substring(7);   
        return srcUrl.substring(7, k);   
    }   
  
    /**  
     *   
     * 字符串替换方法(字符串替换字符串)  
     *   
     * @author kf156  
     *   
     * @param text  
     *            文本  
     * @param oldStr  
     *            旧字符串  
     * @param newStr  
     *            新字符串  
     * @return  
     */  
    public static String replace(String text, String oldStr, String newStr) {   
        int oldLen = oldStr.length();   
        int k = 0;   
        while (k + oldLen <= text.length()) {// 检测到字符串末尾   
            k = text.indexOf(oldStr, k);// 从k处查找oldStr，并返回位置   
            if (k == -1)// 若查不到，则跳出   
                return text;   
            // 若有，则将其替换为newStr   
            text = text.substring(0, k) + newStr   
                    + text.substring(k += oldLen, text.length());   
        }   
  
        return text;   
    }   
  
    class Http implements Runnable {   
  
        HttpConnection http;   
  
        boolean cancel;// 是否取消   
  
        public void cancel() {   
            cancel = true;   
            state = WAIT;// 等待状态   
        }   
  
        public void run() {   
            // cls();   
            state = CONNECT;   
            addStr("网络连接中...");   
            DataInputStream is = null;   
            try {   
                boolean cmwap = cmwapCG.isSelected(0);// 是否走CMWAP   
            	//boolean cmwap = false;
                String host = getURLhost(url);   
                System.out.println("host==="+host);   
                String _url = cmwap ? replace(url, host, "10.0.0.172:80") : url;   
                System.out.println("_url==="+_url);
                http = (HttpConnection) Connector.open(_url, Connector.READ,   
                        true);   
                
                if (cmwap)   
                    http.setRequestProperty("X-Online-Host", host);   
  
                http.setRequestMethod(HttpConnection.GET);   
  
                cmwapCG.setSelectedIndex(0, true);   
  
                String contentType = http.getHeaderField("Content-Type");   
                // System.out.println(contentType);   
                addStr("Content-Type=" + contentType);   
  
                if (cancel) {// 中途结束   
                    addStr("已取消");   
                    return;   
                }   
  
                if (contentType != null  
                        && contentType.indexOf("text/vnd.wap.wml") != -1) {// 过滤移动资费页面   
                    page.append("移动资费页面，过滤！");   
                    http.close();   
                    http = null;   
                    http = (HttpConnection) Connector.open(_url,   
                            Connector.READ, true);   
                    if (cmwap)   
                        http.setRequestProperty("X-Online-Host", host);   
                    http.setRequestMethod(HttpConnection.GET);   
                    contentType = http.getHeaderField("Content-Type");   
                    addStr("Content-Type=" + contentType);   
                }   
  
                int code = http.getResponseCode();   
                addStr("HTTP Code :" + code);   
  
                if (code == 200) {// 成功   
                    
                    is = http.openDataInputStream();   
  
                    byte[] b = new byte[1024];   
                    int len = 0;   
                    ExamGroup eg;
                    ByteArrayOutputStream baos = new ByteArrayOutputStream();   
                    DataOutputStream dos = new DataOutputStream(baos);  
                    page.append("1111");
                    byte num[] = new byte[1];
        			num[0] = is.readByte();
        			page.append("22222");
                    while ((len = is.read(b)) != -1) {   
                        if (cancel) {// 中途结束   
                            addStr("已取消");   
                            return;   
                        }   
                        dos.write(b, 0, len);   
                    }   
                    page.append("3333");
                    byte[] data = baos.toByteArray();   
                    eg = new ExamGroup(num,true);
                    page.append("num=="+num[0]);
                    eg.deserialize(data);
                    page.append("55555");
                    page.append(eg.getTimu()[8]);
                    page.append("6666");

[「已注销」]

帖子太长分两段发了

data = null;   
                    dos.close();   
                    dos = null;   
                    baos.close();   
                    baos = null;   
                    is.close();   
                    is = null;   
  
                    state = SUCCESS;   
  
                } else {   
                    addStr("访问页面失败");   
                    page.append("访问页面失败: " + code);   
                    state = FAIL;   
                }   
            } catch (IOException e) {   
                addStr("联网发生异常：" + e.toString());   
                e.printStackTrace();   
                if (!cancel)   
                    page.append("网络异常：" + e.toString());   
                state = FAIL;   
  
            } catch (SecurityException e) {   
                addStr("安全异常：" + e.toString());   
                e.printStackTrace();   
                if (!cancel)   
                    page.append("安全异常：" + e.toString());   
                state = FAIL;   
  
            } catch (Exception e) {   
                addStr("发生异常：" + e.toString());   
                e.printStackTrace();   
                if (!cancel)   
                    page.append("异常：" + e.toString());   
                state = FAIL;   
  
            } finally {   
  
                if (is != null) {// 关闭is   
                    try {   
                        is.close();   
                    } catch (IOException e) {   
                        e.printStackTrace();   
                    }   
                    is = null;   
                }   
  
                if (http != null) {// 关闭http   
                    try {   
                        http.close();   
                    } catch (IOException e) {   
                        e.printStackTrace();   
                    }   
                    http = null;   
                }   
            }   
  
            if (!cancel)   
                display.setCurrent(page);// 显示页面   
        }   
  
    }   
}  

public class ExamGroup {
	private String timu[]={};//一个长达3000字的数组
	private String cue[];
	private byte daan[]={
			2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,2,1,2,
			2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,2,1,2,
			2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,2,1,2,
			2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,2,1,2,
			2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,2,1,2};
	private byte total ;
	public ExamGroup(int bianhao){
		
	}
	
	public byte[] serialize() throws IOException {
		ByteArrayOutputStream bout = new ByteArrayOutputStream();
		DataOutputStream dataStream = new DataOutputStream(bout);

		System.out.println("没错");
		for(int i =0 ; i<total ; i++){
		dataStream.writeUTF(timu[i]);
		dataStream.writeByte(daan[i]);
		}
		System.out.println("serialize没错");
		return bout.toByteArray();
	}
	public String[] getTimu() {
		return timu;
	}
	public void setTimu(String[] timu) {
		this.timu = timu;
	}
	public String[] getCue() {
		return cue;
	}
	public void setCue(String[] cue) {
		this.cue = cue;
	}
	public byte[] getDaan() {
		return daan;
	}
	public void setDaan(byte[] daan) {
		this.daan = daan;
	}

	public byte getTotal() {
		if(timu.length>120){
			total=120;
		}else{
			total = (byte)timu.length;
		}
		return total;
	} 
	
}

服务端代码

public class TestHttp extends HttpServlet {

	public TestHttp() {
		super();
	}
	
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		doPost(request,response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		response.setContentType("application/octet-stream");
 
        getExamGroup(request,response,1);
    
	}
	 
	public void getExamGroup(HttpServletRequest request, HttpServletResponse response,int bianhao ) throws IOException{
		response.setContentType("application/octet-stream");
		ExamGroup eg = new ExamGroup(bianhao);
		OutputStream os = response.getOutputStream();
		DataOutputStream dos = new DataOutputStream(os);
		dos.writeByte(eg.getTotal());
		byte[] data = eg.serialize();
		dos.write(data);
		response.setContentLength(dos.size()); 
		dos.close();
		os.close();
	       
	}

}

public class ExamGroup {
	private String timu[]={};//一个长达3000字的数组 数组内容省略
	private String cue[];
	private byte daan[]={
			2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,2,1,2,
			2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,2,1,2,
			2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,2,1,2,
			2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,2,1,2,
			2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,2,1,2};
	private byte total ;
	public ExamGroup(int bianhao){
		
	}
	
	public byte[] serialize() throws IOException {
		ByteArrayOutputStream bout = new ByteArrayOutputStream();
		DataOutputStream dataStream = new DataOutputStream(bout);

		System.out.println("没错");
		for(int i =0 ; i<total ; i++){
		dataStream.writeUTF(timu[i]);
		dataStream.writeByte(daan[i]);
		}
		System.out.println("serialize没错");
		return bout.toByteArray();
	}
	public String[] getTimu() {
		return timu;
	}
	public void setTimu(String[] timu) {
		this.timu = timu;
	}
	public String[] getCue() {
		return cue;
	}
	public void setCue(String[] cue) {
		this.cue = cue;
	}
	public byte[] getDaan() {
		return daan;
	}
	public void setDaan(byte[] daan) {
		this.daan = daan;
	}

	public byte getTotal() {
		if(timu.length>120){
			total=120;
		}else{
			total = (byte)timu.length;
		}
		return total;
	} 
	
}

[「已注销」]

全部代码 copy走再模拟器完全可以执行。。。浪费前辈一点时间帮我看看 谢谢了

[「已注销」]

紧急求助

[hanshuihu]

EOFException
应该是对象流结束异常吧，以前好像遇到过但是当时貌似不影响数据传输

[hanshuihu]

public class EOFExceptionextends IOException当输入过程中意外到达文件或流的末尾时，抛出此异常。

此异常主要被数据输入流用来表明到达流的末尾。注意，其他许多输入操作返回一个特殊值表示到达流的末尾，而不是抛出异常。

我觉得 这个异常是数据流结束异常，既然模拟器好着 最好检查下环境

[kf156]

先别解析数据。
直接把数据输出在模拟器和真机上，比对下看，到底得到的是什么数据。

[「已注销」]

亚日，。。。。我可是基本上改的您的代码，帮我看看行吗？？？
我今天改了一天 现在的情况就是一直
contentType=application/vnd.wap.wml
一直进入到移动的页面里面。。过滤了三次连接后还是application/vnd.wap.wml



您能留个邮件过来吗 我把改过的代码给您发过去。

[「已注销」]

我对他进行了比对就是进入了application/vnd.wap.wml页面。。过滤了几次还是进入application/vnd.wap.wml页面

[「已注销」]

这个问题困扰我3天了 我什么都是自学 您帮我一下好吗？