接口对接数据通信问题

Question

接口对接成功，可以通信，但数据在那边处理出现问题可是又看不到
我使用的是writeBytes（）方法发送数据，会不会有问题
DataOutputStream dataout = new DataOutputStream(connection.getOutputStream());
dataout.writeBytes(parm);//发送数据
parm是json格式字符串：
parm={"eid":"L18QMX0000001","uid":"123123","type":"validate","data":{user:"123456"},"sign":"d4878baa9b5b6a7185246570ec376a36"}

或者我怎样知道我发送过去的数据是什么？

Answer 1

Socket client=new Socket("localhost",8888);
String json=dataToJson(getData());
BufferedWriter bw=new BufferedWriter(
new OutputStreamWriter(client.getOutputStream()));
bw.write(json);
bw.flush();
bw.close();
//===================
Socket client =server.accept();
BufferedInputStream bus=new BufferedInputStream(client.getInputStream());
byte[] b=new byte[20480];
int len=bus.read(b);
String requestInfo=new String(b,0,len).trim();
System.out.println(requestInfo);
//===========服务器=======结果
{"errorCode":0,"reason":"ok","result":[{"id":1,"question":"12344556","answer":"12344556","item1":"12344556","item2":"12344556","item3":"12344556","item4":"12344556","explains":"12344556","url":"00000000000"}]}