java 高性能 list java 高性能tcp服务器

TCP服务器端

TcpServer.java

服务器端采用多线程的方式,每建立一个连接就启动一个java线程,发送图片给客户端,之后关闭此TCP连接

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
public class TcpServer extends Thread{
Socket clientSocket;
public TcpServer(Socket clientSocket) {
super();
this.clientSocket = clientSocket;
}
@Override
public void run() {
try {
//获得客户端的ip地址和主机名
String clientAddress = clientSocket.getInetAddress().getHostAddress();
String clientHostName = clientSocket.getInetAddress().getHostName();
System.out.println(clientHostName + "(" + clientAddress + ")" + " 连接成功!");
System.out.println("Now, 传输图片数据...........");
long startTime = System.currentTimeMillis();
//获取客户端的OutputStream
OutputStream out = clientSocket.getOutputStream();
//传出图片数据
FileInputStream in = new FileInputStream(new File("/home/gavinzhou/test.jpg"));
byte[] data = new byte[4096];
int length = 0;
while((length = in.read(data)) != -1){
out.write(data, 0, length);
//写出数据
}
long endTime = System.currentTimeMillis();
//提示信息
System.out.println(clientHostName + "(" + clientAddress + ")" + " 图片传输成功," + "用时:" + ((endTime-startTime)) + "ms");
//关闭资源
in.close();
clientSocket.close();
System.out.println("连接关闭!");
}
catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args) throws IOException {
//建立TCP连接服务,绑定端口
ServerSocket tcpServer = new ServerSocket(9090);
//接受连接,传图片给连接的客户端,每个TCP连接都是一个java线程
while(true){
Socket clientSocket = tcpServer.accept();
new TcpServer(clientSocket).start();
}
}
}
TCP客户端
TcpClient
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.InetAddress;
import java.net.Socket;
public class TcpClient {
public static void main(String[] args) throws IOException {
// 建立TCP服务
// 连接本机的TCP服务器
Socket socket = new Socket(InetAddress.getLocalHost(), 9090);
// 获得输入流
InputStream inputStream = socket.getInputStream();
// 写入数据
FileOutputStream out = new FileOutputStream(new File("../save.jpg"));
byte[] data = new byte[4096];
int length = 0;
while((length = inputStream.read(data)) != -1){
out.write(data, 0, length);
}
//关闭资源
out.close();
socket.close();
}
}

结果

首先,命令行启动服务器端,之后启动客户端,结果如下:

图片比较小,速度很快!