redis-cli ping Java 实现

原创
2017/12/30 03:21
阅读数 434
package com.learn.test;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.Reader;
import java.net.InetSocketAddress;
import java.net.Socket;

/**
 * Created by manager on 2017/12/30.
 */
public class RedisClient {
  public static final byte DOLLAR_BYTE = '$';
  public static final byte ASTERISK_BYTE = '*';
  public static final byte PLUS_BYTE = '+';
  public static final byte MINUS_BYTE = '-';
  public static final byte COLON_BYTE = ':';
  public static final byte CARRIAGE_RETURN = '\r';
  public static final byte LINE_FEED = '\n';


  public RedisClient() throws IOException {
  }


  public static void log(Object tsr){
    System.out.println(tsr);
  }

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

    System.out.print((byte)'1');


    Socket socket = new Socket();
    socket.setReuseAddress(true);
    // Will monitor the TCP connection is valid
    socket.setKeepAlive(true);
    // close socket buffer to ensure timely delivery of data
    socket.setTcpNoDelay(true);
    // Control calls close() method to no block.
    socket.setSoLinger(true, 0);

    socket.connect(new InetSocketAddress("127.0.0.1", 6379), 2000);
    socket.setSoTimeout(2000);



    OutputStream  out = socket.getOutputStream();


    byte[] bytes=new byte[100];

    bytes[0]=ASTERISK_BYTE;
    bytes[1]=49;
    bytes[2]=CARRIAGE_RETURN;
    bytes[3]=LINE_FEED;


    bytes[4]=DOLLAR_BYTE;
    bytes[5]=52;
    bytes[6]=CARRIAGE_RETURN;
    bytes[7]=LINE_FEED;


    bytes[8]=80;
    bytes[9]=73;
    bytes[10]=78;
    bytes[11]=71;

    bytes[12]=CARRIAGE_RETURN;
    bytes[13]=LINE_FEED;






    out.write(bytes);




    out.flush();
//    outputStream.close();


    InputStream inputStream = socket.getInputStream();


    InputStreamReader inputStreamReader=new InputStreamReader(inputStream);

    BufferedReader bufr = new BufferedReader(inputStreamReader);//缓冲

    String info=null;
    log(bufr.readLine());















  }
}
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