The code is as follows:
1. First declare the relevant variables:
private ServerSocket serverSocket = null;
private int ServerPort = 29898;
private Socket socket = null;
private OutputStream outputStream = null;
private InputStream inputStream = null;
private PrintWriter printWriter = null;
private BufferedReader reader = null;
2. Core code writing:
new Thread(new Runnable() {
@Override
public void run() {
try {
serverSocket = new ServerSocket(ServerPort);
Log.d(TAG,"Create A ServerSocket...");
socket = serverSocket.accept();
Log.d(TAG, "Client is Connected...");
outputStream = socket.getOutputStream();
inputStream = socket.getInputStream();
printWriter = new PrintWriter(outputStream,true);
reader = new BufferedReader(new InputStreamReader(inputStream));
if (isAcceptDevice){
//作为接收方，进行一些操作
while (true){
//生成Json字符串格式的JSON对象
String message = reader.readLine();
JSONObject jsonObject= null;
try {
jsonObject = new JSONObject(message);
String AssisDeviceName = jsonObject.getString("devicename");
String AssisTime = jsonObject.getString("time");
} catch (JSONException e) {
e.printStackTrace();
Log.d(TAG, "Reading Jsonobject Error:"+e);
}
}
}else{
if (socket.isConnected()){
if (!socket.isOutputShutdown()){
//向接收方发送消息
JSONObject jsonObject=new JSONObject();
try {
jsonObject.put("devicename", MainActivity.MyDeviceName);
jsonObject.put("time", time);
} catch (JSONException e) {
e.printStackTrace();
}
result=jsonObject.toString();
printWriter.println(result);
printWriter.flush();
Log.d(TAG,"Send:"+result);
}
}
}
} catch (IOException e) {
e.printStackTrace();
}finally {
}
}
}).start();
Note:
1. It is best to create a new thread to reduce the impact of the time-consuming operation of transferring data;
2. The above code is just an example of transferring "device name" and "current time", and you can add data to Json according to your needs in the string.
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