Java int to python int

Question

I have a Java server that will accept a connection from a python socket and return an int of the new port that they python script should connect to. However the 'string" that the python script gets back is blatantly unable to be converted.

Here's the python snippet:

s._PORT = int(s._sock.recv(1024))
print s._PORT

And the java side:

int mPort = 1592;
sock.getOutPutStream().write(IOS.getBytes(mPort++));
// IOS being a utility class that I wrote just to make byte conversions easier

Thanks ~Aedon

public static byte[] 
getBytes(Object obj) 
throws java.io.IOException 
{
    ByteArrayOutputStream bos= new ByteArrayOutputStream(); 
    ObjectOutputStream oos = new ObjectOutputStream(bos);
    oos.writeObject(obj); 
    oos.flush(); 
    oos.close(); 
    bos.close(); 
    byte[] data = bos.toByteArray(); 
    return data;
}

This will only work if the thing that comes out of s._sock.recv(1024) is a character string "1592". Does your IOS.getBytes(x) do such string conversion and write the four ascii characters 1,5,9,2? — Spacedman
– Spacedman, Commented Dec 23, 2010 at 18:11
So do print s._sock.recv(1024) and see what you're getting! — Katriel
– Katriel, Commented Dec 23, 2010 at 18:23
public static byte[] getBytes(Object obj) throws java.io.IOException { ByteArrayOutputStream bos= new ByteArrayOutputStream(); ObjectOutputStream oos = new ObjectOutputStream(bos); oos.writeObject(obj); oos.flush(); oos.close(); bos.close(); byte[] data = bos.toByteArray(); return data; } — ahodder
– ahodder, Commented Dec 23, 2010 at 18:36
What I recieve from the server is ¼f ?sr ?java.lang.Integer?Gáñ˜üç8? ?I ?valuexr ?java.lang.Numberå¼ò??öaï? xp ? 9 — ahodder
– ahodder, Commented Dec 23, 2010 at 18:38

Spike Gronim · Accepted Answer · 2010-12-23 18:57:14Z

2

sock.getOutPutStream().write(Integer.toString(mPort))

s._PORT = int(s._sock.recv(1024))

answered Dec 23, 2010 at 18:57

Spike Gronim

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4 Comments

ahodder Over a year ago

kind of worked. Now when I display it in python I can see what I'm sending. Did the conversion and got a ValueError, I expected this since I'm still getting a few special characters before the int string

Epcylon Over a year ago

Convert the string to byte[] (using for instance the IOS class in the question), and then this would work.

ahodder Over a year ago

I did, had to, write() only takes byte[]'s.

ahodder Over a year ago

I just did a work around, put an '@' in front of my int and just split it python side.

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