java socket receiving data problem

socket string

BufferedReader reader = new BufferedReader (new InputStreamReader (socket.getInputStream ()));
System.out.println (reader.readLine ());
Why am I not read the above data, the following can be?
byte [] buf = new byte [1024];
int len ​​= 0;
InputStream input = socket.getInputStream ();
while ((len = input.read (buf))! = -1) {
System.out.println (new String (buf, 0, len));
}
I see a lot of string buffer flow as much as possible on the Internet, you can sometimes get why the buffered data stream, but must use native String, seeking advice
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Reply:
BufferedReader reader = new BufferedReader (new InputStreamReader (socket.getInputStream ()));
System.out.println (reader.readLine ());
This is a must read by line newline '\ n'

InputStream input = socket.getInputStream ();
while ((len = input.read (buf))! = -1) {
System.out.println (new String (buf, 0, len));
}
This is the way byte streams, apparently able to read, read buffer loop continues until the passage of the stream is gone.
Reply:
public static byte [] readInputStream (InputStream ins) {

BufferedInputStream bis = new BufferedInputStream (ins);
ByteArrayOutputStream bos = new ByteArrayOutputStream ();
try {
byte [] buffer = new byte [128];
int n = -1;
while ((n = bis.read (buffer))! = -1) {
bos.write (buffer, 0, n);
}
} Catch (IOException e) {
e.printStackTrace ();
return null;
} Finally {
if (bis! = null) {
try {
bis.close ();
} Catch (IOException e) {
e.printStackTrace ();
}
}
}
return bos.toByteArray ();
}
Can read the complete IO streams. Try not to use a character stream, line by line read, need each other to send \ n symbol to be read.
Reply:

cited a floor birdsaction reply:

BufferedReader reader = new BufferedReader (new InputStreamReader (socket.getInputStream ()));
System.out.println (reader.readLine ());
This is a must read by line newline '\ n'

InputStream input = socket.getInputStream ();
while ((len = input.read (buf))! = -1) {
System.out.println (new String (buf, 0, len));
}
This is the way byte streams, apparently able to read, read buffer loop continues until the passage of the stream is gone.

Assuming the server has only one row of data returned, the client can not use the buffer stream data, which is why?
Reply:

reference to the second floor birdsaction reply:

public static byte [] readInputStream (InputStream ins) {

BufferedInputStream bis = new BufferedInputStream (ins);
ByteArrayOutputStream bos = new ByteArrayOutputStream ();
try {
byte [] buffer = new byte [128];
int n = -1;
while ((n = bis.read (buffer))! = -1) {
bos.write (buffer, 0, n);
}
} Catch (IOException e) {
e.printStackTrace ();
return null;
} Finally {
if (bis! = null) {
try {
bis.close ();
} Catch (IOException e) {
e.printStackTrace ();
}
}
}
return bos.toByteArray ();
}
Can read the complete IO streams. Try not to use a character stream, line by line read, need each other to send \ n symbol to be read.

Really odd strange, I used your code to receive the data stream, or receive eh
Reply:
Are you sure the server sends data yet?
This is not a major problem, just write a simple server can send data.
Reply:
Hair and I used
InputStream input = socket.getInputStream ();
while ((len = input.read (buf))! = -1) {
System.out.println (new String (buf, 0, len));
}
Receive data ah
Reply:
There are people to help me look at it