程序挂在ObjectInputStream中的readObject方法。 [英] program hangs on ObjectInputStream readObject method .
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问题描述
我想分享当连接的是，我的code挂在ObjectInputStream中的readObject（）函数后成立的类型的东西，其中包含的对象（字符串名称，地址，职务，......和字节[]图片）。不会发生流。任何人都可以请找出其中我做错了事情。
私有类ConnectedThread继承Thread {
私人最终的BluetoothSocket mmSocket;
私人最终的InputStream mmInStream;
私人最终的OutputStream mmOutStream;
私人的ObjectOutputStream OOS = NULL;
私人ObjectInputStream的OIS = NULL; 公共ConnectedThread（插座的BluetoothSocket）{
Log.d（TAG，创造ConnectedThread）;
mmSocket =插座;
Log.d（TAG，创造）;
InputStream的tmpIn = NULL;
Log.d（TAG，打造B）;
OutputStream的tmpOut = NULL; //获取的BluetoothSocket输入和输出流
尝试{
Log.d（之前的InputStream连接线构造，）;
tmpIn = socket.getInputStream（）;
Log.d（连接线构造的InputStream
tmpIn.toString（））;
tmpOut = socket.getOutputStream（）;
Log.d（连接线构造的OutputStream
tmpOut.toString（））;
}赶上（IOException异常五）{
Log.e（TAG，临时插座没有创造，E）;
} mmInStream = tmpIn;
mmOutStream = tmpOut; 最终的BufferedOutputStream蟾蜍=新的BufferedOutputStream（
mmOutStream）;
最终的BufferedInputStream bufi =新的BufferedInputStream（mmInStream）; Log.d（TAG，试图创建OOS）; // ********* **********的ObjectOutputStream 尝试{
OOS =新的ObjectOutputStream（蟾蜍）; }赶上（StreamCorruptedException E）{
Log.d（TAG，中招损坏流异常）;
Log.w（TAG，E）; }赶上（IOException异常五）{
Log.d（TAG，捕获到IOException）;
Log.w（TAG，E）;
} // ********* ********** ObjectInputStream的 螺纹s =新的Thread（）{
公共无效的run（）{
Log.d（TAG，试图创建OIS）;
尝试{
OIS =新的ObjectInputStream（bufi）;
}赶上（StreamCorruptedException E）{
// TODO自动生成catch块
e.printStackTrace（）;
}赶上（IOException异常五）{
// TODO自动生成catch块
e.printStackTrace（）;
}
Log.d（TAG，完成了OIS）;
如果（OIS == NULL）{
Log.d（TAG，OIS为空）;
}
} };
s.start（）; } 公共无效的run（）{
Log.i（TAG，BEGIN mConnectedThread）;
我的code挂在这一点上，永远向前。
`//继续听InputStream的同时连接
而（真）{
尝试{
Log.d（连接线运行，开始时）; 尝试{ 东西obj_rcv =（东西）ois.readObject（）;
Log.d（BTS，RCV对象+ obj_rcv.getName（））; 消息MSG 2 = mHandler
.obtainMessage（RemoteBusinessCard.MESSAGE_READ）;
束束=新包（）;
bundle.putSerializable（人，obj_rcv）;
msg2.setData（包）;
mHandler.sendMessage（MSG 2）; }赶上（ClassNotFoundException的E1）{
// TODO自动生成catch块
e1.printStackTrace（）;
}
}赶上（IOException异常五）{
Log.e（TAG，断开，E）;
失去连接（）;
打破;
}
}
} / **
*写到所连接的OutStream。
*
* @参数缓冲区
*将要写入的字节
* /
公共无效写入（东西对象）{
尝试{
Log.d（BTS，里面写前的+ object.getName（））;
oos.writeObject（对象）;
Log.d（BTS，内写入后+ object.getName（））;
oos.flush（）;
oos.close（）; }赶上（IOException异常五）{
Log.e（TAG，写在异常，E）;
}
} 公共无效取消（）{
尝试{
mmSocket.close（）;
}赶上（IOException异常五）{
Log.e（无法连接插座的close（）标签，电子）;
}
}
}`
解决方案
当你创建一个的ObjectOutputStream 您必须确保的ObjectInputStream 在插座的另一端也适当地创建，因为OutputStream的总发送确认包的InputStream和块，直到它得到一个答案。
I want to share object of type Stuff which contains ( String name,address,title, ... and byte[] picture ) when connection is established after that my code hangs on objectinputstream readObject() function . No streaming occurs. Can anyone please figure out where i am doing wrong thing.
private class ConnectedThread extends Thread {
private final BluetoothSocket mmSocket;
private final InputStream mmInStream;
private final OutputStream mmOutStream;
private ObjectOutputStream oos = null;
private ObjectInputStream ois = null;
public ConnectedThread(BluetoothSocket socket) {
Log.d(TAG, "create ConnectedThread");
mmSocket = socket;
Log.d(TAG, "create a");
InputStream tmpIn = null;
Log.d(TAG, "create b");
OutputStream tmpOut = null;
// Get the BluetoothSocket input and output streams
try {
Log.d("connected thread constructor before inputstream", "");
tmpIn = socket.getInputStream();
Log.d("connected thread constructor inputstream",
tmpIn.toString());
tmpOut = socket.getOutputStream();
Log.d("connected thread constructor outputstream",
tmpOut.toString());
} catch (IOException e) {
Log.e(TAG, "temp sockets not created", e);
}
mmInStream = tmpIn;
mmOutStream = tmpOut;
final BufferedOutputStream bufo = new BufferedOutputStream(
mmOutStream);
final BufferedInputStream bufi = new BufferedInputStream(mmInStream);
Log.d(TAG, "attempting to create OOS");
// ********* ObjectOutputStream **********
try {
oos = new ObjectOutputStream(bufo);
} catch (StreamCorruptedException e) {
Log.d(TAG, "Caught Corrupted Stream Exception");
Log.w(TAG, e);
} catch (IOException e) {
Log.d(TAG, "Caught IOException");
Log.w(TAG, e);
}
// ********* ObjectInputStream **********
Thread s = new Thread() {
public void run() {
Log.d(TAG, "attempting to create OIS");
try {
ois = new ObjectInputStream(bufi);
} catch (StreamCorruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.d(TAG, "completed OIS");
if (ois == null) {
Log.d(TAG, "OIS is null");
}
}
};
s.start();
}
public void run() {
Log.i(TAG, "BEGIN mConnectedThread");
My code hang at this point , never move forward .
`// Keep listening to the InputStream while connected
while (true) {
try {
Log.d("Connected thread run ", "start while");
try {
Stuff obj_rcv = (Stuff) ois.readObject();
Log.d("BTS", "rcv object " + obj_rcv.getName());
Message msg2 = mHandler
.obtainMessage(RemoteBusinessCard.MESSAGE_READ);
Bundle bundle = new Bundle();
bundle.putSerializable("person", obj_rcv);
msg2.setData(bundle);
mHandler.sendMessage(msg2);
} catch (ClassNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
} catch (IOException e) {
Log.e(TAG, "disconnected", e);
connectionLost();
break;
}
}
}
/**
* Write to the connected OutStream.
*
* @param buffer
* The bytes to write
*/
public void write(Stuff object) {
try {
Log.d("BTS", "inside write before" + object.getName());
oos.writeObject(object);
Log.d("BTS", "inside write after" + object.getName());
oos.flush();
oos.close();
} catch (IOException e) {
Log.e(TAG, "Exception during write", e);
}
}
public void cancel() {
try {
mmSocket.close();
} catch (IOException e) {
Log.e(TAG, "close() of connect socket failed", e);
}
}
}`
解决方案
When you create an ObjectOutputStream you must ensure that the ObjectInputStream at the other end of the socket is also appropriately created because the outputStream always sends a confirmation packet to the inputStream and blocks until it gets an answer.
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