Question

我目前已经连接了TCP服务器（java桌面应用程序）和客户端（android应用程序）。

我可以从客户端发送json字符串到服务器，从服务器发送到客户端，我的问题有时候我需要从服务器发送一个被剪切的大字符串。

这是我的代码：

服务器端

public void sendResponse(String response){
  PrintWriter writer = new PrintWriter(BufferedWriter(
                       new OutputStreamWriter(mClientSocket.getOutputStream())), true);

  if(writer != null && !writer.checkError()){
     writer.println(response);
     writer.flush();
  }
}

客户端

BufferedReader input = new BufferedReader(new InputStreamReader(mSocket.getInputStream()));
String response;
while((response = input.readLine()) != null && mRun){
    Data data = new Gson().fromJson(response, Data.class);
    //when i try to convert the response to Data object using Gson
    //it gives me a com.google.gson.JsonSyntaxException: com.google.gson.stream.MalformedJsonException: Unterminated array at line 1 column 106498

}

因为你可以看到客户端的错误发生，因为字符串很大，所以它被切断，有人可以告诉我在这种情况下该怎么办？

提前感谢。

Answer 1

我建议您使用DataOutputStream而不是尝试读取线条。像，

public void sendResponse(String response) {
    OutputStream os = mClientSocket.getOutputStream();
    DataOutputStream dos = new DataOutputStream(new BufferedOutputStream(os));
    dos.writeUTF(response);
    dos.flush();
}

然后，在客户端

InputStream is = mSocket.getInputStream();
DataInputStream dis = new DataInputStream(is);
String response = dis.readUTF(); // <-- not just one line. the entire string.
Data data = new Gson().fromJson(response, Data.class);

而且，如果它是真正的大型JSON响应，您可以考虑添加GZIPInputStream和GZIPOutputStream。

DataInputStream dis = new DataInputStream(new GZIPInputStream(is));

和

DataOutputStream dos = new DataOutputStream(new GZIPOutputStream(os));

修改

public void sendResponse(String response) { OutputStream os = mClientSocket.getOutputStream(); DataOutputStream dos = new DataOutputStream(new GZIPOutputStream(os)); byte[] buff = response.getBytes("UTF-8"); dos.writeInt(buff.length); dos.write(buff); dos.flush(); }

然后阅读，

InputStream is = mSocket.getInputStream(); DataInputStream dis = new DataInputStream(new GZIPInputStream(is)); int len = dis.readInt(); byte[] buff = new byte[len]; dis.readFully(buff); String response = new String(buff, "UTF-8"); Data data = new Gson().fromJson(response, Data.class);

TCP Server-Client大json

1 个答案: