java数据传输1（client）

package javaapplication4;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;

public class SENDDATA {

    public String go(String xmlInfo) throws UnknownHostException, IOException {

        // 向服务器端发送请求，服务器IP地址和服务器监听的端口号
        Socket client = new Socket("103.46.128.49", 57837);

        Socket client = new Socket("localhost", 88888);

        // 通过printWriter 来向服务器发送消息
        PrintWriter printWriter = new PrintWriter(client.getOutputStream());
        System.out.println("连接已建立...");

        // 发送消息
        printWriter.println(xmlInfo);
        printWriter.println("this is client ");
        printWriter.flush();

        // InputStreamReader是低层和高层串流之间的桥梁
        // client.getInputStream()从Socket取得输入串流

        InputStreamReader streamReader = new InputStreamReader(client.getInputStream());

        // 链接数据串流，建立BufferedReader来读取，将
        //BufferReader链接到InputStreamReder
        BufferedReader reader = new BufferedReader(streamReader);
        
        String advice = reader.readLine();
        
        reader.close();
        return advice;
    }

    public static void main(String[] args) throws UnknownHostException,IOException {

        StringBuilder sb = new StringBuilder();
        sb.append("hello world----------");
        // 提交请求

        String utf8 = new String(sb.toString().getBytes("UTF-8"));
        String unicode = new String(utf8.getBytes(), "UTF-8");
        String gbk = new String(unicode.getBytes("GB2312"));
        // String xml = new String();//GB18030
        
                SENDDATA c = new SENDDATA();
                 System.out.println("连接...");
                 String advice = c.go(gbk);
                  System.out.println("接受...");
                  System.out.println( advice);
                // System.out.println("接收到服务器的消息 ：" + advice);
        
    }
}