直接上源码,留做纪念。
有点简单,大家不要笑,初次实现。
功能描述:java发送数据给erlang,erlang将收到的数据重复两次再发送给java。
erlang源码:模块tcp_listen
-module(tcp_listen). -export([start/0,close/1]). -define(PORT,5002). start() -> AA= << "我是汉字">>, io:format("hello erlang ~w~n",[[AA,byte_size(AA)]]), case gen_tcp:listen( ?PORT,[binary,{active,true},{packet,0}]) of {ok,LSocket}-> io:format("listen port success ~w~n",[LSocket]), spawn(fun() -> loop(LSocket) end) , {ok,LSocket} ; {error,Reason}-> io:format("listen port error Reason: ~w~n",[Reason]), {error,{cannot_listen,Reason}} end . %% server socket begin listen loop(LSocket)-> io:format("begin listen lsocket: ~n",[]), case gen_tcp:accept(LSocket) of {ok,Socket}-> io:format("receive client connect: ~w~n",[Socket]), begin_receive(Socket), spawn(fun()-> loop(LSocket) end) ; {error,Reason}-> io:format("accept client error: ~w~n",[Reason]) end. begin_receive(Socket)-> io:format("begin listen socket client data: ~n",[]), receive {tcp,Socket,Data}-> NewData= <<Data/binary,Data/binary>>, io:format("receive client data1: ~w~n",[NewData]), gen_tcp:send(Socket,NewData) , begin_receive(Socket); Data_2-> io:format("receive client data2: ~w~n",[Data_2]) end. close(LSocket)-> gen_tcp:close(LSocket).
java源码:类Test
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.Socket;
import java.net.SocketAddress;
import java.net.UnknownHostException;
public class Test {
public static void main(String[] args)
{
// TODO Auto-generated method stub
System.out.println("ni hao");
String AA="我是汉字";
byte[] byte_write=null;
try
{
byte_write=AA.getBytes("UTF8");
}
catch (UnsupportedEncodingException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println(byte_write.length);
int port=5002;
String ip="localhost";
Socket socket=null;
try
{
socket=new Socket(ip,port);
System.out.println("socket connect success");
}
catch (UnknownHostException e)
{
// TODO Auto-generated catch block
System.out.println("error:"+e.getLocalizedMessage());
}
catch (IOException e)
{
// TODO Auto-generated catch block
System.out.println("error:"+e.getLocalizedMessage());
}
OutputStream out_stream = null;
InputStream in_stream = null;
try {
out_stream = socket.getOutputStream();
in_stream = socket.getInputStream();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
byte[] byte_read=new byte[1024];
int data_in_length=0;
String read_in_str=null;
try
{
out_stream.write(byte_write);
System.out.println("socket write success");
data_in_length=in_stream.read(byte_read);
read_in_str=new String(byte_read,0,data_in_length, "UTF8");
System.out.println("data_in_length:"+data_in_length+",read_in_str:"+read_in_str);
}
catch (IOException e)
{
// TODO Auto-generated catch block
System.out.println("socket connect fail");
}
try {
socket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
如有见解或者疑问,请留言,有留必回。可能回复的会不太及时,请谅解。