java+socket通信-传输文件图片源码

java socket通信-传输文件图片
ClientTcpSend.java   客户端发送类

package com.yjf.test;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.net.InetSocketAddress;
import java.net.Socket;

public class ClientTcpSend {
    
    public static String clientip = "127.0.0.1";
    public static int port = 33456;

    public static void main(String[] args) {
        int length = 0;
        byte[] sendBytes = null;
        Socket socket = null;
        DataOutputStream dos = null;
        FileInputStream fis = null;
        try {
            try {
                socket = new Socket();
                socket.connect(new InetSocketAddress(clientip, port),30 * 1000);
                dos = new DataOutputStream(socket.getOutputStream());
                File file = new File("F:\\aa.xml");
                fis = new FileInputStream(file);
                sendBytes = new byte[1024*4];
                while ((length = fis.read(sendBytes, 0, sendBytes.length)) > 0) {