直接在本地通過socket進(jìn)行通信。node.js作為服務(wù)器，java向node.js請求消息，node.js處理請求并返回。

        以下部分測試通過，之后就可以在這個基礎(chǔ)上編寫后續(xù)的代碼了。

        由于使用了readLine()函數(shù)，所以java發(fā)送或接收的數(shù)據(jù)都需要保證有換行符。所以臨時在node.js發(fā)送語句加了換行符，后期可以考慮用緩沖區(qū)。

        java輸出：

        node.js輸出：

        java部分

package javatest;
import java.net.Socket;
import java.util.Scanner;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
public class test{   
      public static void main(String[] arges){   
          try{     
        	  Scanner scan = new Scanner(System.in);
              Socket socket = new Socket ("127.0.0.1", 11111);    
              BufferedReader in = new BufferedReader (new InputStreamReader (socket.getInputStream()));     
              PrintWriter out = new PrintWriter (   
              new BufferedWriter( new OutputStreamWriter( socket.getOutputStream ())), true);   
              String str = scan.nextLine();
              while(!str.equals("quit")){
                  out.println(str);     
                  System.out.println(in.readLine());
                  str = scan.nextLine();
              }
              out.println(str);     
              System.out.println(in.readLine());
              scan.close();
              socket.close();
          }catch(Exception e){   
              System.out.println(e);   
          }   
       }   
}   

var net = require('net');
var HOST = '127.0.0.1';
var PORT = 11111;
net.createServer(function(socket) {
    console.log('connection: ' +
        socket.remoteAddress + ':' + socket.remotePort);
    socket.on('data', function(data) {
        console.log('From client : ' + data);
        socket.write('From server : successfully received!\n' );
    });
    socket.on('close', function(data) {
        console.log('close: ' + socket.remoteAddress + ' ' + socket.remotePort);
    });
}).listen(PORT, HOST);
console.log('Server listening on ' + HOST +':'+ PORT);