Java基于Tcp的基础聊天功能实例

本文实例讲述了java基于tcp的基础聊天功能。分享给大家供大家参考，具体如下：

最基础的聊天，用户端和服务器端每次说一句，而且严格规定了先后到顺序。

服务器端：

import java.io.*;
import java.net.*;
public class chatserver {
    public static void main(string[] args) {
        serversocket server = null;
        try {
            server = new serversocket(12138);
        } catch (ioexception e) {
            system.out.println("error" + e);
        }
//        server = null;
        try {
            socket ac = null;
//            ac = new socket();
//            ac = null;
            ac = server.accept();
            bufferedreader is = null;
            is = new bufferedreader(new inputstreamreader(ac.getinputstream()));
            bufferedreader dis = new bufferedreader(new inputstreamreader(system.in));
            printwriter os = new printwriter(ac.getoutputstream());
            string line = null;
            system.out.println("clinent " + is.readline());
            line = dis.readline();
            while(!line.equals("bey")) {
                os.println(line);
                os.flush();
                system.out.println("server " + line);
                system.out.println("client " + is.readline());
                line = dis.readline();
            }
            os.close();
            dis.close();
            is.close();
            ac.close();
        } catch (exception e) {
            system.out.println("error" + e);
        }
    }
}

用户端：

public class chatclient {
    public static void main(string[] args) {
        socket client = null;
        try {
            client = new socket("127.0.0.1",12138);
            bufferedreader dis = new bufferedreader(new inputstreamreader(system.in));
            bufferedreader is = new bufferedreader(new inputstreamreader(client.getinputstream()));
            printwriter os = new printwriter(client.getoutputstream());
            string line = dis.readline();
            while(!line.equals("bey")) {
                os.println(line);
                os.flush();
                system.out.println("client " + line);
                system.out.println("server " + is.readline());
                line = is.readline();
            }
            os.close();
            dis.close();
            is.close();
            client.close();
        } catch (exception e) {
            system.out.println("error" + e);
        }
    }
}

无论是用户端还是服务器端都用了bufferedreader用来写入一些了连续的字符串，用printwriter进行输出。

注：bufferedwriter接收到的参数需要是字符类的数据流，所以要建一个inputstreamreader,而inputstreamreader的参数是数据流即可。

上面规定了写入的顺序是客户端先写，然后是服务器端；

注意要在循环结束的时候close个个数据流和端口。