datagramsocket和socket的区别及使用场景-ag九游会j9官方网站

// 服务器端

try {

serversocket serversocket = new serversocket(8080);

socket socket = serversocket.accept();

// 从客户端接收数据

inputstream inputstream = socket.getinputstream();

bufferedreader reader = new bufferedreader(new inputstreamreader(inputstream));

string message = reader.readline();

system.out.println("收到客户端消息：" message);

// 向客户端发送数据

outputstream outputstream = socket.getoutputstream();

printwriter writer = new printwriter(outputstream, true);

writer.println("欢迎连接服务器！");

socket.close();

serversocket.close();

} catch (ioexception e) {

e.printstacktrace();

}

// 客户端

try {

socket socket = new socket("localhost", 8080);

// 向服务器发送数据

outputstream outputstream = socket.getoutputstream();

printwriter writer = new printwriter(outputstream, true);

writer.println("hello, server!");

// 从服务器接收数据

inputstream inputstream = socket.getinputstream();

bufferedreader reader = new bufferedreader(new inputstreamreader(inputstream));

string message = reader.readline();

system.out.println("收到服务器消息：" message);

// 服务器端

try {

datagramsocket serversocket = new datagramsocket(8080);

// 接收客户端发送的数据

byte[] receivebuffer = new byte[1024];

datagrampacket receivepacket = new datagrampacket(receivebuffer, receivebuffer.length);

serversocket.receive(receivepacket);

string message = new string(receivepacket.getdata(), 0, receivepacket.getlength());

system.out.println("收到客户端消息：" message);

// 向客户端发送数据

byte[] sendbuffer = "欢迎连接服务器！".getbytes();

datagrampacket sendpacket = new datagrampacket(sendbuffer, sendbuffer.length, receivepacket.getaddress(), receivepacket.getport());

serversocket.send(sendpacket);

serversocket.close();

} catch (ioexception e) {

e.printstacktrace();

}

// 客户端

try {

datagramsocket clientsocket = new datagramsocket();

// 向服务器发送数据

byte[] sendbuffer = "hello, server!".getbytes();

datagrampacket sendpacket = new datagrampacket(sendbuffer, sendbuffer.length, inetaddress.getlocalhost(), 8080);

clientsocket.send(sendpacket);

// 接收服务器发送的数据

byte[] receivebuffer = new byte[1024];

datagrampacket receivepacket = new datagrampacket(receivebuffer, receivebuffer.length);

clientsocket.receive(receivepacket);

string message = new string(receivepacket.getdata(), 0, receivepacket.getlength());

system.out.println("收到服务器消息：" message);

clientsocket.close();

} catch (ioexception e) {

e.printstacktrace();

}