JGroups实现聊天小程序

本文实例为大家分享了jgroups实现聊天小程序的具体代码，供大家参考，具体内容如下

效果图：

代码部分：

package com.lei.jgoups;

import java.io.bufferedreader;
import java.io.datainputstream;
import java.io.dataoutputstream;
import java.io.inputstream;
import java.io.inputstreamreader;
import java.io.outputstream;
import java.util.linkedlist;
import java.util.list;

import org.jgroups.jchannel;
import org.jgroups.message;
import org.jgroups.receiveradapter;
import org.jgroups.view;
import org.jgroups.util.util;

public class simplechat extends receiveradapter{
 jchannel channel;
 string user_name=system.getproperty("user.name", "n/a");
 final list<string> state=new linkedlist<string>();
 public static void main(string[] args) throws exception {
 new simplechat().start();
 }
 private void start() throws exception {
 channel=new jchannel();// 使用默认的配置, udp.xml【ybxiang:】该文件位于jgroups-x.y.z.final.jar中。
 channel.setreceiver(this);//注册一个 receiver 来接收消息并查看变化
 channel.connect("chatcluster");
 channel.getstate(null, 10000);
 eventloop();
 channel.close();
 }

 private void eventloop() {
 bufferedreader in = new bufferedreader(new inputstreamreader(system.in));
 while(true) {
 try {
 system.out.print(">");
 system.out.flush();
 string line=in.readline().tolowercase();
 if(line.startswith("quit") || line.startswith("exit"))
  break;
 line="[" + user_name + "] " + line;
 message msg=new message(null, line);
 channel.send(msg);
 }
 catch(exception e) {
 }
 }
 }

 //如果有节点加入后会回调此函数
 public void viewaccepted(view new_view) {
 system.out.println("** view: " + new_view);
 }

 //接收到消息后会调用此函数
 public void receive(message msg) {
 string line=msg.getsrc() + ": " + msg.getobject();
 system.out.println(line);
 synchronized(state) {//同步调用
 state.add(line);
 }
 }

 //getstate回调方法
 public void getstate(outputstream output) throws exception {
 synchronized(state) {
 util.objecttostream(state, new dataoutputstream(output));
 }
 }

 // 从input stream中读取状态，然后做相应的设置：
 public void setstate(inputstream input) throws exception {
 list<string> list;
 list=(list<string>)util.objectfromstream(new datainputstream(input));
 synchronized(state) {
 state.clear();
 state.addall(list);
 }
 system.out.println(list.size() + " messages in chat history):");
 for(string str: list) {
 system.out.println(str);
 }
 }
}

架包：

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。

原文链接：https://blog.csdn.net/junmoxi/article/details/78424426