文章目录

  • java实现服务端与客户端的聊天
  • tcpService服务端
  • tcpClient客户端
  • java操作文件的上传(第一版)
  • 文件上传服务端ServerFileUpload
  • 文件上传客户端
  • java操作文件的上传(优化)
  • 服务端service
  • 客户端client


java实现服务端与客户端的聊天

tcpService服务端

package cn.xjt.ints;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Scanner;

/**
 * @author xujiangtao
 * @create 2020-08-04-14:14
 */
public class tcpService {
    public static void main(String[] args) throws IOException {
        String messageSend;             //定义一个字符串
        Scanner sc = new Scanner(System.in);             //输入函数
        ServerSocket server = new ServerSocket(8899);    //建立一个服务器网络,指定端口号
        Socket client = server.accept();          //接受一个客户端对象的连接,得到客户端对象
        if (client != null) {
            System.out.println("客户端连接成功");
        }
        InputStream inputStream = client.getInputStream();    //创建一个输入流
        OutputStream outputStream = client.getOutputStream();     //得到输出流
        for(int i=0;i<10;i++)
        {
            new Thread(()->{
                byte[] data = new byte[1024];      //定义一个字节数组
                int len = 0;        //读取数据
                try {
                    len = inputStream.read(data);
                } catch (IOException e) {
                    e.printStackTrace();
                }
                System.out.println("你接受到一条消息:"+new String(data,0,len));     //将数据输出
            }).start();

            new Thread(()->{

            }).start();
            messageSend = sc.nextLine();              //从控制台得到字符串
            if(messageSend.equals("end"))
            {
                sc.close();
                server.close();
                client.close();
            }

            outputStream.write(messageSend.getBytes());                 //将字符串发送

        }

    }
}

tcpClient客户端

package cn.xjt.ints;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.util.Scanner;

/**
 * @author xujiangtao
 * @create 2020-08-04-13:44
 */
public class tcpClient {
    public static void main(String[] args) throws IOException {
        String messageC;
        Scanner sc =new Scanner(System.in);
        //建立tcp客户端,指定ip地址,端口号
        Socket client = new Socket("192.168.137.1",8899);
        OutputStream os = client.getOutputStream();         //得到一个输出流
        InputStream inputStream = client.getInputStream();  //得到输入流
        for (int i = 0; i < 10; i++) {
            new Thread(()->{
                byte[] data = new byte[1024];
                int leng = 0;                  //读取数据
                try {
                    leng = inputStream.read(data);
                } catch (IOException e) {
                    e.printStackTrace();
                }
                System.out.println("你接受到一条消息:"+new String(data,0,leng));    //将数据输出
            }).start();
            messageC=sc.nextLine();
            if(messageC.equals("end"))
            {
                client.close();
            }

            os.write(messageC.getBytes());                  //将字符串写入发送


        }


    }
}

**

存在部分不足。欢迎讨论修改!

**

java操作文件的上传(第一版)

文件上传服务端ServerFileUpload

package cn.xjt.TcpFileLoad;

import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;

/**
 * @author xujiangtao
 * @create 2020-08-04-15:10
 */
public class ServerFileUpload {
    public static void main(String[] args) throws IOException {
        FileOutputStream fileOutputStream = new FileOutputStream(new File("E:\\AE Folder\\苹果.ai"));
        ServerSocket server = new ServerSocket(9999);
        System.out.println("等待客户端连接");
        Socket client = server.accept();
        System.out.println("连接成功");
        InputStream serIS = client.getInputStream();
        byte[] data = new byte[5000];
        int lenght = -1;
        System.out.println("数据正在上传...");
//        lenght=serIS.read(data);
//        System.out.println(lenght);
//        fileOutputStream.write(data,0,lenght);
        while ((lenght=serIS.read(data))!=-1)
        {
            if(lenght<data.length)
            System.out.println(lenght+"#######################"+lenght);
            System.out.println("再循环上传");
            fileOutputStream.write(data,0,lenght);
//            if(lenght<5000)       //判断如果读取的长度小于字节长度,则跳出循环
//            {
//                break;            //因客户端使用结束次套接次的输出流,所以不用加次判断跳出
//            }
        }
        System.out.println("数据已经上传成功");
//        serIS.read(data);

//        fileOutputStream.write(data);
        OutputStream os = client.getOutputStream();
        os.write("上传成功".getBytes());
    }
}

文件上传客户端

package cn.xjt.TcpFileLoad;

import java.io.*;
import java.net.Socket;

/**
 * @author xujiangtao
 * @create 2020-08-04-14:51
 */
public class ClientFileUpload {
    public static void main(String[] args) throws IOException {
        String str = null;

        Socket client = new Socket("192.168.137.1",9999);
        //得到一个网络输入流
        InputStream inputStream = client.getInputStream();
        //将读取到的输入流,发送到服务器
        OutputStream outputStream = client.getOutputStream();
        FileInputStream is =new FileInputStream(new File("E:\\AI练习\\苹果.ai"));
        byte[] data = new byte[5000];
        int len=-1;
        int count =0;
        while ((len=is.read(data))!=-1)
        {
            count++;
            outputStream.write(data,0,len);
            System.out.println("我一直在循环");
            System.out.println(len+"#########################");
        }
        //上传完文件,给服务器写一个结束标记
        client.shutdownOutput();        //禁用次套接字的输出流,结束了
        //对于一个TCP套接字,先前写入的数据将被发送后正常关闭TCP连接。如果你向一个socket写入输出流后调用shutdownoutput()插座上,流将抛出一个异常。

        System.out.println("我出来了"+count+"次循环");
        byte[] upload = new byte[1024];
        int leng = inputStream.read(upload);
        System.out.println(new String(upload,0,leng));
    }
}

java操作文件的上传(优化)

服务端service

package cn.xjt.TcpFileLoadOptimized;

import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;

/**
 * @author xujiangtao
 * @create 2020-08-04-15:10
 */
public class ServerFileUpload {
    public static void main(String[] args) throws IOException {

        ServerSocket server = new ServerSocket(9999);
        System.out.println("等待客户端连接");
        while (true)
        {
            String FileName = "xujiangtao"+System.currentTimeMillis()+".jpg";
            //服务器上传的地址
            FileOutputStream fileOutputStream = new FileOutputStream(new File("E:\\tupian\\"+FileName));
            Socket client = server.accept();
            System.out.println("连接成功");
            //开启多个线程
            new Thread(()->{
                try {
                    //连接成功
                    InputStream serIS = client.getInputStream();
                    byte[] data = new byte[5000];
                    int lenght = -1;
                    System.out.println("数据正在上传...");
                    while ((lenght=serIS.read(data))!=-1)
                    {
                        fileOutputStream.write(data,0,lenght);
                    }
                    System.out.println("数据已经上传成功");
                    //成功回馈
                    OutputStream os = client.getOutputStream();
                    os.write("上传成功".getBytes());
                }catch (IOException e)
                {
                    System.out.println(e);
                }
            }).start();

        }

    }
}

客户端client

package cn.xjt.TcpFileLoadOptimized;

import java.io.*;
import java.net.Socket;

/**
 * @author xujiangtao
 * @create 2020-08-04-14:51
 */
public class ClientFileUpload {
    public static void main(String[] args) throws IOException {
        String str = null;

        Socket client = new Socket("192.168.0.112",9999);
        //得到一个网络输入流
        InputStream inputStream = client.getInputStream();
        //将读取到的输入流,发送到服务器
        OutputStream outputStream = client.getOutputStream();
        FileInputStream is =new FileInputStream(new File("E:\\图片\\H2vo2sM061.jpg"));
        //发送
        byte[] data = new byte[5000];
        int len=0;
        int count=0;
        System.out.println("开始发送数据");
        //通过字节流循环的发送数据,当len等于-1的时候,停止循环,发送成功!
        while ((len=is.read(data))!=-1)
        {
            System.out.println(len);
            count++;
            outputStream.write(data,0,len);     //将字节流发送,长度为0到len
            System.out.println(count);
        }
        //上传完文件,给服务器写一个结束标记
        client.shutdownOutput();        //禁用次套接字的输出流,结束了
        //回收
        byte[] upload = new byte[1024];
        int leng = inputStream.read(upload);
        System.out.println(new String(upload,0,leng));
    }
}