如何使用套接字编写和读取JSON？

Question

我一直在努力解决这个问题，我真的不知道如何解决这个问题。我正在使用JsonReader和JsonWriter与Java服务器进行通信。

写入服务器工作正常，但每当我调用reader.beginArray()时，我得到EOFException，所以我不知道如何正确地读取和写入服务器。 错误：

02-19 19:10:07.576: W/System.err(1334):     java.io.EOFException: End of input at line 1 column 1
02-19 19:10:07.586: W/System.err(1334):     at com.google.gson.stream.JsonReader.nextNonWhitespace(JsonReader.java:943)
02-19 19:10:07.606: W/System.err(1334):     at com.google.gson.stream.JsonReader.nextValue(JsonReader.java:771)
02-19 19:10:07.606: W/System.err(1334):     at com.google.gson.stream.JsonReader.peek(JsonReader.java:367)
02-19 19:10:07.606: W/System.err(1334):     at com.google.gson.stream.JsonReader.expect(JsonReader.java:337)
02-19 19:10:07.617: W/System.err(1334):     at com.google.gson.stream.JsonReader.beginArray(JsonReader.java:306)
02-19 19:10:07.617: W/System.err(1334):     at com.example.lecture9.MyService.write(MyService.java:40)
02-19 19:10:07.617: W/System.err(1334):     at com.example.lecture9.MyService.connect(MyService.java:70)
02-19 19:10:07.626: W/System.err(1334):     at com.example.lecture9.MainActivity$1$1.run(MainActivity.java:84)

---

    @Override
        public void write(Message msg) throws IOException{
            //gson = new Gson();
            //writer = new JsonWriter(new BufferedWriter(new OutputStreamWriter(s.getOutputStream(), "UTF-8")));
            //reader = new JsonReader(new BufferedReader(new InputStreamReader(s.getInputStream(), "UTF-8")));
            writer.beginArray();

            gson.toJson(msg, msg.getClass(), writer);
            writer.flush();

            reader.beginArray();
            msg = gson.fromJson(reader, Message.class);

            System.out.println(msg);

            reader.endArray();
            writer.endArray();
            reader.close();
            writer.close();

            //try{          
                //gson.toJson(msg, msg.getClass(), writer);
                //writer.flush();
            //}
            //catch(Exception e){ e.printStackTrace(); }
        }

        @Override
        public boolean connect(String ipAddress, int port) {
            Socket s = null;
            try{
                InetAddress serverAddr = InetAddress.getByName(ipAddress);
                s = new Socket(serverAddr, port);
                gson = new Gson();
                writer = new JsonWriter(new BufferedWriter(new OutputStreamWriter(s.getOutputStream(), "UTF-8")));
                reader = new JsonReader(new BufferedReader(new InputStreamReader(s.getInputStream(), "UTF-8")));
                //writer.beginArray();

                Message login = new Message ("CLIENT");
                login.getH().setType("LOG");
                write(login);

                return true;
            } 
            catch (Exception e) {
                e.printStackTrace();
                return false;
            }
        }