socketconn.java

来自「手机端游戏开发程序」· Java 代码 · 共 103 行

package stock;

import java.io.*;
import java.net.*;

public class SocketConn
{
  Socket s;
  DataInputStream input;
  DataOutputStream output;
  boolean error = false;
  public SocketConn()
  { //构造函数，建立与服务器的连接并与输入输出流相关
    String url = "202.117.55.178";
    int port = 6001;
    try
    {
      this.s = new Socket(InetAddress.getByName(url), port);
      this.input = new DataInputStream(s.getInputStream());
      this.output = new DataOutputStream(s.getOutputStream());

    }

    catch (IOException ex)
    {
      System.out.println("socket连接失败");
      this.error = true;
    }

  }

  public SocketConn(String url, int port)
  { //构造函数，建立与服务器的连接并与输入输出流相关

    try
    {
      this.s = new Socket(InetAddress.getByName(url), port);
      this.input = new DataInputStream(s.getInputStream());
      this.output = new DataOutputStream(s.getOutputStream());

    }

    catch (IOException ex)
    {
      System.out.println("socket连接失败");
      this.error = true;
    }

  }

  public void send(String s)
  { //发送字符串
    try
    {
      ByteArrayOutputStream byteOut = new ByteArrayOutputStream(); //该类实现一个以字节数组形式写入数据的输出流。当数据写入缓冲区时，它自动扩大
      DataOutputStream out = new DataOutputStream(byteOut);
      out.writeUTF(s); //以UTF的形式将消息写入out的写入目标：byteOut流
      out.flush(); //相当于写入输出流
      byte buf[] = byteOut.toByteArray(); //创建一个新分配的字节数组buf[]。尺寸为该byteOut输出流的当前尺寸，buf的内容就是当前byteOut里面的内容（皆以byte为单位）
      output.write(buf); //将这个buf数组的内容写入output流中
      output.flush();
      //close streams
      byteOut.close();
      out.close();

    }
    catch (IOException ex)
    {
      System.out.println("发送数据失败");
    }
  }

  public String getAck()
  { //得到反馈
    try
    {
      return this.input.readUTF();

    }
    catch (IOException ex)
    {
      return null;
    }
  }

  public void close()
  { //关闭与服务器的连接
    try
    {
      send("close.."); //发送关闭讯息
      this.input.close();
      this.output.close();
      this.s.close();

    }
    catch (IOException ex)
    {
    }

  }

}